Source: https://patents.google.com/patent/US5725762
Timestamp: 2018-06-23 20:48:16
Document Index: 259465888

Matched Legal Cases: ['arts 80', 'art 2', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'art 2']

US5725762A - Separation treatment system - Google Patents
Separation treatment system Download PDF
US5725762A
US5725762A US08445726 US44572695A US5725762A US 5725762 A US5725762 A US 5725762A US 08445726 US08445726 US 08445726 US 44572695 A US44572695 A US 44572695A US 5725762 A US5725762 A US 5725762A
US08445726
John M. Rummler
Wastech International Inc
C02F1/302—Treatment of water, waste water, or sewage by irradiation with microwaves
B01D2221/02—Small separation devices for domestic application, e.g. for canteens, industrial kitchen, washing machines
F23G2201/20—Dewatering by mechanical means
F23G2204/00—Supplementary heating arrangements
F23G2204/20—Supplementary heating arrangements using electric energy
F23G2204/203—Microwave
F23J2219/30—Sorption devices using carbon, e.g. coke
Y10S210/919—Miscellaneous specific techniques using combined systems by merging parallel diverse waste systems
A materials treatment system which initially separates liquid and solid components with a separator. The system can be advantageously utilized for household sewage handling, however various components have other applications. Once the separator separates the solids and liquids, a fire tube combusts the solids with microwaves. The liquids exiting the separator are treated in a liquid treatment system which includes additional particle filtration/separation, treatment of the liquids with an oxidant liquid, and an ultraviolet treatment. An advantageous microwave cavity assembly is also provided for dehydration/combustion of solids exiting the separator and/or for solids filtered from liquids in the liquid treatment system.
This is a continuation-in-part application of application Ser. No. 08/053,402 now U.S. Pat. No. 5,447,630.
It is an object of the present invention to provide an improved material separator.
A more complete appreciation of the invention and many of the attendant advantages thereof will become readily apparent from the following detailed description, particularly when considered in conjunction with the drawings in which:
FIG. 17 is a cross-section of a filter assembly or microwavable filter arrangement for use in the liquid treatment system;
FIG. 21 is an alternate clarification chamber embodiment; and
FIG. 22 schematically depicts a system utilizing the separator of the present invention.
Referring now to the drawings, wherein like reference numerals designate identical or corresponding parts throughout the several views, an initial appreciation of the present invention will become readily apparent from FIG. 1. The system as shown in FIG. 1 can be utilized for handling and treating waste from a variety of sources. In the context of residential use, such sources can include a bathtub or shower 1, toilet 2, lavatory or kitchen sink (which may include a significant amount of vegetable matter associated with a kitchen sink having a garbage disposal) 3, dishwasher 4 and clothes washer 5. It is to be understood that the residential sources shown in FIG. 1 are provided merely as an example, since the system and process of the present invention can be advantageously used in a wide variety of environments which may have different sources of waste, or different proportions of waste, such as in an office building (which may have a greater proportion of toilet waste and little or no waste from bathtubs or clothes washers) or restaurants (which may have a greater proportion of water including vegetable matter). In addition, some components, such as the separator 10, may have advantageous uses other than waste handling, i.e., wherever separation of solids and liquids is desired. More particularly, the separator can be utilized wherever it is desired to separate materials, including solids and liquids. For example, in the beer industry, such a separator can be utilized after washing of hops to separate the hops from the washing water. The separator can also be utilized to separate usable pulp, pulp fiber or wood chips from liquids/sludge discharged from a pulp and paper mill. Of course, the separator has a wide variety of applications.
Still referring to FIG. 1, it will be appreciated that all of the influents to the treatment system drain to a common drain, which then enters a separator 10, which will be described in further detail hereinafter. Significantly, the separator 10 requires no energy, but nevertheless effectively separates solid and liquid components, with the solid component treated by the STM, and the liquid component (optionally) treated by the LTM. The solid component contains a very small amount of liquid, however is typically not completely free of liquid, which is actually beneficial, since the presence of a very small portion of liquid allows for more effective utilization of microwave treatment in a microwave reactor chamber 12. However, since the separator 10 is extremely effective in separating the liquid and solid components, excessive energy is not wasted in drying the solid components.
As shown at 68, a thermocouple or sensor is provided in the exhaust manifold 64, with suitable coupling 70 connecting the sensor 68 to a speed control 72 for the exhaust fan 24. As discussed earlier, in accordance with one aspect of the present invention, by utilizing a controlled, variable speed exhaust fan 24, more complete and efficient incineration of the solid waste is attained. In particular, by utilizing the thermocouple 68, the status of the incineration by microwave energy can be monitored, such that prior to attaining the incineration/combustion temperature, a low exhaust speed, and low exhaust volume flow is provided, thereby allowing the microwave energy to effectively heat the solid waste and increase the temperatures to initiate incineration. Once combustion begins, the sensor 68 causes the controller 72 to increase the speed of fan 24, thereby increasing the exhaust volume flow and correspondingly increasing the amount of air provided to the tube 13 to feed the combustion. A CPU or solid state control panel 51 is provided for controlling various operations in the STM such as valve openings, operation of the ram, and possibly for any interface and/or control of the optional LTM. The control panel can also be equipped with various system sensors, or indicators informing the user of any malfunctions or the need for servicing. The solid state control panel can also provide for control, or adjustment of the control, for the variable speed exhaust fan. By way of example, the variable speed fan can be controlled utilizing a thermocouple such that a flow of 100-150 CFM is provided at temperatures below 220° F.; with 150-300 CFM provided for temperatures of 220°-500° F.; and with 300-400 CFM at temperatures exceeding 500° F. However, different ranges, or a different number of ranges may also be possible within the scope of the present invention.
Referring now to FIG. 4, a perspective view of a disassembled separator 10 is shown. The separator unit 10 includes an upper separator or chamber 80, with a lower housing or lower chamber 90 provided which directs the respective components to the solid outlet and the primary and secondary liquid outlet tubes. A removable cover 82 encloses the upper housing 80 with a gasket seal 83. The cover 82 is desirable to allow for inspection, and removal of undesirable foreign objects from the separator, such as upon the occurrence of an inadvertent introduction of a hairbrush or child's toy into the toilet. The upper and lower portions 80, 90 are readily assembled, with an outlet pipe 84 of the upper portion received by an inlet part of the lower housing 90, and with the portion 86 enlarged to allow the pipe 84 to be received therein. A clamping ring 88 maintains a secure interconnection between the upper and lower housing portions 80, 90. Although the unit 10 could be formed integrally, the use of separate sections can be desirable, since the upper and lower housing parts 80, 90 can be rotated with respect to one another prior to fixing their respective positions with clamp ring 88, thereby aiding connection of the inlet pipe 52 with preexisting drain pipes in a residence or other installation location.
A wire spring or wire guide member 95 is provided between the housing portions, 80, 90, the purpose of which will be explained hereinafter with reference to FIG. 5. Still referring to FIG. 4, it should be appreciated that the inlet pipe 52 supplies influents substantially tangential to the inner surface of the upper housing portion 80. Typically, the influents enter with a substantial velocity, usually by virtue of the gravity flow of a toilet or sink down to a basement location where the unit would typically be installed. A centrifugal flow is thus established as the influent exits the pipe 52 and travels along the inner surface of the upper housing portion 80.
______________________________________    D1  3.25"    D2  1.50"    D3  2.25"    D4  1.75"    D5  2.50"    D6  3.50"______________________________________
After a periodic collection of solids within the fire tube, the ball valve above the fire tube is closed, and the solids are subjected to microwave radiation to effect a controlled, high temperature burn cycle. In this burn cycle, solids such as organic and inorganic carbon particles, and volatile organic compounds are combusted to CO2 and water vapor (of course the materials being incinerated and the byproducts may vary depending upon the desired use of the system, or the materials to be treated).
To provide sufficient power, in the embodiment of FIGS. 7 and 8, two 650 watt magnetrons are provided as indicated generally at 130, 132, each having a respective fan 131, 133. In the arrangement shown in FIGS. 7 and 8, the magnetrons are offset approximately 90° C. from one another. This arrangement is provided primarily to allow access to both of the magnetrons (e.g., for servicing) from the same side of the treatment system, such that both of the magnetrons are accessible by removing a panel of the housing indicated generally at 200. However, it is to be understood that other configurations and orientations of the magnetrons are possible, for example, they may be disposed offset 180° from one another. As discussed further hereinafter, within the fire tube 128 a grate or substrate holds the solids, while allowing liquids to drain therethrough. In addition, if desired, a bed of particles (spheres, granules or beads) can optionally be provided above the substrate to form a granular bed to ensure that a relatively large surface area of the solid material is exposed to microwave radiation during incineration. In addition, the beaded grate or bed assembly in the fire tube allows any residual liquids to drain from the solid material. The liquid draining from the solid material will accumulate in a sump 136, with a ball valve 134 disposed between the fire tube 128 and sump 136 for metering the flow of the drained liquids into the sump. As with the ball valve 126, the valve 134 can be controlled by the central processing unit (not shown in FIGS. 7 and 8) and a motor/actuator as shown at 135.
To prevent particulate matter from exiting through the exhaust stack 144, a filter or scrubber is provided upstream of the fan and exhaust stack 144, for example, within a region of a connecting pipe as shown at 146 (FIG. 7). The use of an exhaust scrubber or filter is also important in reducing odors in the exhaust. Since particulate matter within the exhaust may include solid material which has not combusted completely, a third magnetron assembly can also be provided as shown at 148 (FIG. 7). The third magnetron 148 will thus subject the filter 146 to microwave irradiation, thus completing incineration of any uncombusted solid material which may exit with the exhaust gases. To allow the filter to be subjected to microwaves, the filter can be formed of a ceramic wool material, or may include plural plates or discs (e.g., a hard porous ceramic/alumina material) arranged to provide a tortuous passageway, such that particulate matter will be trapped by the ceramic discs or ceramic wool, and then subjected the microwave irradiation. In addition, the exhaust scrubber/exhaust filter can include a cellular ceramic material, a cellular material including both a ceramic and a lossy, or a cellular material with a lossy plate upstream or downstream of same (preferably upstream for burning any incompletely combusted particles). Such a cellular scrubber is structurally similar to that used in a catalytic converter (i.e., with a cellular or honeycomb cross-section), and may include a catalyst such as a noble metal (e.g., cobalt, nickel). The grate which holds the solid material (or optionally the bed of granular material--balls, or spheres) can also be of a ceramic cellular structure.
As shown in FIG. 7, the merging pipe portion 162 also provides a decreasing radius pipe which merges into the upper chamber 160, thus increasing the velocity of the material entering the separator to enhance separation without requiring a pump or other mechanical expedients in order to increase the velocity of the material entering the separator. Utilizing the separator 120, the action of the material falling vertically by gravity and traveling in a clockwise direction (i.e., clockwise when viewed from above the separator for operation north of the Equator) causes the liquid component to be held against the inner surfaces of the separator by the surface tension of the liquid, such that the liquid flows along the inner surfaces of the separator from the upper chamber 160 through the neck portion 156 and into the lower chamber 154 for exit through the outlet pipe 124. FIG. 11 is provided as a further illustration of the separator 120, depicting a side view of the separator which is not in cross-section, thereby further illustrating the merging portions 162, 164 for the inlet and outlet of the upper and lower chambers 160, 154.
For comparison purposes, FIG. 12 depicts the necked portion 156, with the right hand portion of the figure depicting an assembly in which the upper and lower chambers 160, 154 and wire guide 158 held utilizing a clamping arrangement, whereas the left side of the figure depicts a modified connection arrangement between the upper and lower chambers and the wire guide 158. As shown in the left hand portion of FIG. 12, the wire guide 158 can have an upper periphery 170 or gasket portion which is clamped between the upper and lower parts of the separator 120 in the necked portion 156. As also shown in the left portion of FIG. 12, utilizing this arrangement, the upper and lower parts of the separator can be secured utilizing a bolt 172. As also shown in the left hand portion, the interface between the upper and lower parts of the chamber can also be formed such that the inner surface is continuous, even at the interface between the upper and lower parts of the separator within the neck as illustrated at 174. Thus, with this arrangement, the sheeting action and surface tension of the liquid component as it travels along the surfaces of the separator is not interrupted by the interface between the upper and lower parts of the separator, or by the wire guide 158 (or at least any interrupting is reduced as compared with the right side arrangement), such that the connection between the upper and lower parts of the separator does not interrupt the flow of the liquid, thus reducing any spraying or diverting of the liquid into the cone-like opening 150 of the lower chamber 154. Thus, with the arrangement shown in the left portion of FIG. 12, the wire guide 158 more successfully performs a scalping operation in removing and holding solid components of the material being separated, such that the wire guide acts like a rake in a river and the solid component drops from the wire guide 158 into the opening 150, while the flow of liquid along the inner surfaces of the separator is maintained.
As also shown in FIG. 14, the guide wire will enter the neck portion at an angle b with respect to the neck portion. Preferably, this angle is approximately 30° (e.g. ±5°), and this angle has been found satisfactory in avoiding solid materials from becoming caught between the inner surface of the neck portion and the underside of the guide wire. A modified mounting of the guide wire is also shown in FIG. 14. As shown in FIG. 14, the top of the guide wire can include a hooked portion 200 encased in a neoprene or butyl gasket material 202, thus ensuring a seal in the clamped portion between the upper and lower component parts of the separator. Further, if desired, the hooked portion can include an additional wire ring, such as a metal ring, extending through the eye of the hook, for additional reinforcement and structural integrity. A swedge clamp member 204 can be provided about the joint between the upper and lower parts of the separator, thereby holding the components in place. Of course, other clamping/connector expedients are also possible.
As shown at the bottom of FIG. 13, the lower portion of the separator can also include a thickened or reinforced socket portion 191 having an O-ring 193 such that the outlet is properly sealed when connected to the ball valve assembly disposed between the separator and the fire tube.
FIG. 15 shows a cross-sectional view of an alternative embodiment of the fire tube. As discussed earlier, the fire tube can have a cylindrical shape (i.e. as indicated at 128 in FIG. 7), however, it is believed that the arrangement shown in FIG. 15 may provide a better air flow, although this arrangement will likely be more expensive. The fire tube 210 shown in FIG. 15 includes an air inlet 212 with an air outlet as shown at 214, such that an "S" flow pattern is provided through the microwave transparent fire tube 210. As with the cylindrical fire tube, an outlet is provided at the bottom part of the fire tube as shown at 216, such that any liquids draining from the fire tube pass to a sump. As also shown in FIG. 15, within the fire tube, a substrate, dish or perforated screen portion 218 (grate) is provided, above which can be supported the optional ceramic or alumina balls/granules 220, such that the solids fall upon the balls 220, and any residual liquid in the solid drains and exits through the exit 216 to the sump, while the solid remaining at 220 is subjected to microwave incineration as discussed earlier. As discussed earlier, the balls granular/loose material 220 assist in ensuring an adequate surface area of the solid waste is exposed to microwaves, and in preventing the solid from clumping in a mass. As also discussed earlier, a portion of the beads can be formed of a microwave absorptive material, and a backflow/backwash or agitating device can optionally be provided for the beads 220. Alternately, a cellular (e.g. honeycomb) grate can be utilized to hold the solids while allowing drainage. The grate can be formed of a ceramic, and can be utilized with a microwave absorptive material as part of the cellular structure, as a coating on the cellular structure, or with the microwave absorbent material ("lossy") provided upstream or downstream of the cellular structure as discussed further hereinafter. As shown in FIG. 15, the fire tube has conical upper and lower portions. As with the cylindrical (FIG. 7) or other shaped fire tube, the fire tube is preferably disposed below the separator, such that the solids drop from the separator into the fire tube.
As should be apparent from the foregoing, the liquid or waste water from the separator is received by the surge tank 230, and is subjected to a secondary clarification utilizing the surge tank and the clarification chamber 240. By way of example, the system can be operated such that the surge tank empties 98% of its volume into the clarification tank or settling vessel 240 on a daily basis, with any particles or scum settling in the surge tank, as well as any particles such as hair and lint retained by the filter of the surge tank removed from the sump of the surge tank at the end of a daily cycle. The liquid is then filtered in the filter tubes 326, 328 in order to remove particles having an effective size of, for example, 50 microns or larger. The liquid exiting the filter assemblies 326, 328 is low in total suspended solids, but still contains a larger than optimal dissolved organic content (measured as TOC or BOD5) and potentially pathogenic microorganisms. The mixing of the liquid exiting the filters 326, 328 with an oxidant liquid (the liquid including an oxidant or mixed oxidants) and then subjecting the liquid to an ultraviolet treatment (in ultraviolet cell 249) provides an oxidation/disinfection process by dissolving organic compounds and disinfection using ultraviolet enhanced chemical oxidation. The electrolytic cell, mixed oxidant cell or other means for providing a liquid which includes at least an oxidant, generates the desired oxidant solution, and the ultraviolet or microwave chamber generates additional ozone and hydroxyl free radicals. With the brine based cell arrangement discussed earlier, the constituents of the mixed oxidant can include ozone, hydrogen peroxide, hypochlorite, chlorine dioxide and chlorine. However, it is to be understood that other oxidants are possible, and it is believed that oxidants other than chlorine will be desired in the future, in view of the recognition of chlorine as a carcinogen.
C.sub.8 H.sub.12 O.sub.3 N.sub.2 +8O.sub.2 →8CO.sub.2 +3H.sub.2 O+2NH.sub.3
This oxidation reaction produces carbon dioxide (CO2) and water (H2 O) as by-products, as well as ammonia (NH3) or nitrate (NO3). The ultraviolet irradiation step produces hydroxyl (OH-) free radicals in the mixed oxidant which enhance the oxidation process. In addition, a chemical denitrification occurs as a result of the mixing with oxidants and ultraviolet disinfection, which involves the hydrolyses of urea, another organic nitrogen compound as follows:
CH.sub.4 N.sub.2 O+2H.sub.2 O→(NH.sub.4).sub.2 CO.sub.2
In addition, a reaction occurs between one component of the mixed oxidant, hypochlorite (OCl-) with ammonium (NH4 +) as follows:
2NH.sub.4.sup.+ +3OCl.sup.- →N.sub.2.sup.↑ +3CL.sup.- +3H.sub.2 O+2H+
The reaction proceeds rapidly in the presence of excess OCl- at a pH>9.0 to sequentially replace hydrogen with chlorine, forming mono-, di- and tri-chloramine, and ultimately free chlorine and nitrogen gas. This reaction is known as break-point chlorination. Other reactions are possible, for example:
2NH4.sup.+ +ClO.sub.2 →N.sub.2.sup.↑ +CL.sup.- +2H.sub.2 O (not electron balanced) 2NH4.sup.+ +O.sub.3 →N.sub.2.sup.↑ +2H.sup.+ +3H.sub.2 O
Both of the above reactions shown proceed at pH>9.0. Of course, the foregoing reactions are provided as examples, and it is to be understood that other oxidant/disinfection reactions are possible. The pH adjustment can be accomplished by the addition of a catholyte (e.g. liquid from the cathode of the electrolytic cell) or other basic liquid upstream of the location at which the liquid including an oxidant is added. Thus, where denitrification is desired, a basic liquid is added upstream of the location at which the liquid including an oxidant is added. Otherwise, the basic (e.g. from the cathode of the electrolytic cell) liquid can be added after the final UV/microwave radiation to provide a more neutral effluent.
FIG. 17 depicts a cross-sectional view of one of the liquid filter assemblies shown at 326, 328 in FIG. 16. As shown in FIG. 17, the liquid will enter through inlet 310, with a diverter or three way liquid valve 246 disposed upstream of the inlet 310 such that the flow is only directed to one of the assemblies at a time as discussed earlier. Disposed inside of the liquid filter assembly, a disc filter 312 (or other filter element arrangement as discussed hereinafter) is provided which can be formed, for example, of an alumina material which is porous to allow liquids to pass therethrough, but retaining any particulate solids (e.g., >50 microns) which may remain in the liquid. A pump (not shown) is disposed downstream of a liquid outlet 314 to draw the liquid through the filter 312 (see, e.g., pump 350 in FIG. 16A). A microwave attachment is provided as shown at 316, such that solids trapped by the filter 312 are periodically incinerated. An air inlet 318 and air outlet 320 are also provided for supplying air for the incineration process, with the air in and air out regulated utilizing a valve arrangement such as a ball valves 319, 321. The air outlet 320 can be connected to the same variable speed fan assembly as the fire tube of the solid treatment module, or a separate fan outlet assembly can be provided. Element 317 is a metallic screen or shield which defines an end of the microwave chamber within the microwave filter assembly. More particularly, as in a conventional microwave oven, the screen 317 prevents microwaves from escaping therepast, and acts as a microwave reflector, thus delimiting the microwave chamber or defining the geometry of the microwave chamber. The microwave chamber can be a single mode or multimode arrangement, and the microwaves will be focused at a location of the load (i.e., the material trapped upon the filter), or at a location of a lossy (a microwave absorbent material which can be utilized in combination with a ceramic or microwave transparent material as discussed further hereinafter). By way of example, for a three inch diameter of the ceramic filter 312 and screen or perforated plate 317, a spacing between the filter and screen can be approximately 12 inches.
Referring now to FIGS. 20 and 21, arrangements for the clarification chamber (shown at 240 in FIG. 16A) will now be described. In the arrangement of FIG. 20, the flow from the surge tank enters through an inlet 400, passes through a first elbow 402, and then enters the clarification chamber after passing through a second elbow 404, such that a spiral flow is achieved as the liquid enters the clarification chamber. The spiral flow causes heavier particles and sediments to pass towards the center of the chamber and drop to the bottom as shown at 406. This material (as well as material dropping from the filters 408) is then periodically pumped, for example by a moyno pump, back to the fire tube via the separator. Element 407 generally designates a stand or support structure. One or more inlets are also provided as shown at 410 to draw liquid from the clarification chamber into a central tubular column 412. The liquid enters the central tubular column 412, which includes a cylindrical filter 408 therein such that the liquid must pass through the cylindrical filter 408 prior to passing to the exit 414. The filter 408 can be of a conventional design, for example a filter utilized in a conventional septic tank having 1/16-1/32 inch filter slots will be acceptable. Such filters are available from Zoeller Pump Company, and are self-cleaning such that during periods of low flow or no flow, particles trapped by the filter 408 will drop down to 15 the bottom of the clarification chamber, where the particles can be removed periodically with the moyno pump. The filter 408 thus traps fine vegetable matter, hair or larger particles, and prevents same from passing to the exit 414, which then goes to the filter chambers as discussed earlier. Floatables may be present in the clarification chamber at the top of the liquid as indicated at 416. The tubular column 412 provides a barrier such that the solid/particulate material in the filter is not subjected to the spiral flow, which could cause emulsification of the solids. Once the liquid level is sufficiently high, the floatables will pass over the tubular column 412, and thus, can be filtered or scalped from the top of the liquid within the clarification chamber.
1. A separation treatment system comprising:
a separator for separating liquids and solids, said separator having an inlet chamber having inlet means, an outlet chamber disposed vertically below the inlet chamber and having solid outlet means and liquid outlet means, and a necked portion disposed between the inlet chamber and the outlet chamber, said necked portion having an inner diameter smaller than an inner diameter of said inlet chamber and smaller than an inner diameter of said outlet chamber, and a guide wire assembly disposed in said necked portion, wherein said guide wire assembly removes solids from liquids traveling along an inner surface of said separator and drops said solids into said solid outlet means while a remainder of said liquid exits said liquid outlet means.
2. The separation treatment system of claim 1, wherein said separator includes a joint in said necked portion, and wherein a portion of said guide wire assembly is connected to said separator at said joint.
3. The separation treatment system of claim 1, wherein said guide wire assembly extends from an inner surface of said necked portion at a location, and wherein an inner diameter of the necked portion increases immediately below said location at which said guide wire assembly extends from said inner surface of said necked portion.
4. The separation treatment system of claim 3, wherein said necked portion includes a convex inner surface above said location and a concave inner surface below said location.
5. The separation treatment system of claim 3, wherein said guide wire assembly extends from said necked portion at an angle of 25°-35° with respect to the inner surface of said necked portion.
6. The separation treatment system of claim 1, wherein said solid outlet means includes a solid collector cone extending from a bottom of said outlet chamber.
7. The separation treatment system of claim 6, wherein said solid collector cone has a top having an inner diameter larger than a diameter of said necked portion.
8. The separation treatment system of claim 6, wherein said liquid outlet means includes a liquid outlet pipe extending tangentially from said outlet chamber, and wherein said liquid outlet pipe merges with said outlet chamber over a circumferential portion of said outlet chamber.
9. The separation treatment system of claim 1, further including means for treating at least one of pulp, wood particles and wood fiber.
10. The separation treatment system of claim 1, wherein said inlet means includes a pipe extending tangentially from said inlet chamber and merging with said inlet chamber over a circumferential portion of said inlet chamber.
11. The separation treatment system of claim 10, wherein said liquid outlet means includes a pipe extending tangentially from said outlet chamber and merging with said outlet chamber over a circumferential portion of said outlet chamber.
12. The separation treatment system of claim 1, further including a fire tube for combustion of solids, and wherein a passageway connects said solid outlet means to said fire tube for combustion of solids received from said solid outlet means.
13. The separation treatment system of claim 12, wherein said fire tube includes means for subjecting solids to microwave energy, and wherein said fire tube is disposed vertically below said outlet chamber and said solid outlet means such that solids drop through said solid outlet means and into an inlet of said fire tube.
14. The separation treatment system of claim 13, wherein said fire tube includes a bed of material upon which solids are dropped and retained for combustion, at least some of said material formed of a microwave transparent material.
15. The separation treatment system of claim 14, wherein some of said material is microwave absorptive.
16. The separation treatment system of claim 14, wherein said material is a particulate material.
17. The separation treatment system of claim 14, wherein said material includes an oxide bonded silicon carbide, porous substrate material.
18. The separation treatment system of claim 14, wherein said bed of material includes a cellular ceramic grate.
19. The separation treatment system of claim 18, wherein said cellular ceramic grate includes a honeycomb structure.
20. The separation treatment system of claim 16, further including a valve disposed between said fire tube and said solid outlet means, and a sump disposed below said fire tube.
21. A separation treatment system as recited in claim 12, wherein said fire tube includes a substrate which holds solids for combustion.
22. A separation treatment system as recited in claim 21, wherein said substrate includes a plurality of openings extending therethrough.
23. A separation treatment system as recited in claim 1, wherein said separator is formed as a first section and a separate second section, said first section including said inlet chamber and a first portion of said necked portion, said separate second section including said outlet chamber and a second portion of said necked portion, and wherein said first portion of said necked portion and said second portion of said necked portion are connected at a joint.
24. A separation treatment system as recited in claim 1, wherein said solid outlet means is disposed vertically below and underneath said guide wire assembly.
25. A separation treatment system comprising:
a separator for separating liquids and solids, said separator having an inlet chamber having inlet means, an outlet chamber disposed vertically below the inlet chamber and having solid outlet means and liquid outlet means, and a necked portion disposed between the inlet chamber and the outlet chamber, said necked portion having an inner diameter smaller than an inner diameter of said inlet chamber and smaller than an inner diameter of said outlet chamber, and a guide wire assembly disposed in said necked portion, wherein said guide wire assembly removes solids from liquids traveling along an inner surface of said separator and drops said solids into said solid outlet means while a remainder of said liquid exits said liquid outlet means; and
a fire tube disposed vertically below and underneath said separator, wherein said fire tube is connected to said solid outlet means by a passageway which extends downwardly such that solids which fall through said solid outlet means then fall through said passageway into said fire tube, said fire tube for combustion of solids exiting said solid outlet means of said separator.
26. The separation treatment system of claim 25, wherein said fire tube includes means for subjecting solids in said fire tube to microwaves.
27. The separation treatment system of claim 26, wherein said fire tube includes a substrate which holds solids for combustion, and wherein said substrate includes a microwave transparent material.
28. The separation treatment system of claim 27, further including a bed of loose material including at least one of balls, beads, granular material and particulate material, and wherein a portion of said loose material is microwave transparent and a portion of said loose material is non-microwave transparent.
29. The separation treatment system of claim 25, wherein said fire tube includes a ceramic grate.
30. The separation treatment system of claim 29, wherein said ceramic grate includes oxide bonded silicon carbide.
31. The separation treatment system of claim 29, further including a silicon carbide lossy disposed at least one of above and below said ceramic grate.
32. The separation treatment system of claim 25, further including a joint disposed in said necked portion.
33. A separation treatment system as recited in claim 25, wherein said fire tube includes a substrate which holds solids for combustion, said substrate including a plurality of openings extending therethrough.
34. A separation treatment system as recited in claim 33, further including a sump disposed below said fire tube, and wherein a passageway extends between said sump and said fire tube such that said sump collects liquid draining from solids disposed on said substrate of said fire tube.
35. A separation treatment system comprising:
a separator including an upper part and a lower part, said upper part including an inlet chamber including inlet means, said inlet means including a pipe extending tangentially from said inlet chamber and merging with said inlet chamber over a circumferential portion of said inlet chamber, said upper part further including a first necked portion having an inner diameter smaller than an inner diameter of said inlet chamber, said lower part of said separator including an outlet chamber and a second necked portion, said separator including means for connecting said second necked portion of said lower part to said first necked portion of said upper part, and wherein said second necked portion of said lower part has an inner diameter smaller than an inner diameter of said outlet chamber, said outlet chamber further including solid outlet means in the form of a cone extending from a bottom of said outlet chamber, said cone having a top inner diameter larger than the inner diameter of said second necked portion of said lower part, said outlet chamber further including liquid outlet means comprising a pipe extending tangentially from said outlet chamber and merging with said outlet chamber over a circumferential portion of said outlet chamber, said separator further including guide wire means extending from a location of said means for connecting said first and second necked portions, wherein said guide wire means removes solids from liquids travelling along an inner surface of said separator and drops said solids into said solid outlet means while a remainder of said liquid exits said liquid outlet means;
a microwave cavity disposed below said solid outlet means for receiving solids exiting said solid outlet means of said separator, said microwave cavity including a bed of material which receives said solids, and means for subjecting said solids to microwaves for dehydration and combustion of said solids;
an isolation valve disposed between said solid outlet means and said microwave cavity;
a sump disposed below said microwave cavity for collecting residual liquids from solids held on said bed of material.
36. The separation treatment system of claim 35, wherein said first necked portion includes a convex inner surface disposed above said guide wire means, and said second necked portion includes a concave inner surface, and further wherein said microwave cavity includes an upper conical inner surface with an increasing inner diameter with respect to a vertical downward direction, said microwave cavity further including a lower conical surface with a decreasing inner diameter with respect to a vertical downward direction.
37. A separation treatment system comprising:
a separator including an inlet chamber including inlet means, said inlet means including a pipe extending tangentially from said inlet chamber and merging with said inlet chamber over a circumferential portion of said inlet chamber, said separator further including a necked portion having an inner diameter smaller than an inner diameter of said inlet chamber, said separator further including an outlet chamber, and wherein said necked portion has an inner diameter smaller than an inner diameter of said outlet chamber, said outlet chamber including solid outlet means in the form of a cone extending from a bottom of said outlet chamber, said cone having a top inner diameter larger than the inner diameter of said necked portion, said outlet chamber further including liquid outlet means comprising a pipe extending tangentially from said outlet chamber and merging with said outlet chamber over a circumferential portion of said outlet chamber, said separator further including guide wire means disposed in said necked portion, wherein said guide wire means removes solids from liquids travelling along an inner surface of said separator and drops said solids into said solid outlet means while a remainder of said liquid exits said liquid outlet means;
a microwave cavity disposed below said solid outlet means for receiving solids exiting said solid outlet means of said separator, and including means for subjecting said solids to microwaves for dehydration and combustion of said solids;
a sump disposed below said microwave cavity for collecting residual liquids draining from solids held in said microwave cavity.
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US08053402 US5447630A (en) 1993-04-28 1993-04-28 Materials treatment process and apparatus
US08445726 US5725762A (en) 1993-04-28 1995-05-22 Separation treatment system
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US08053402 Continuation-In-Part US5447630A (en) 1993-04-28 1993-04-28 Materials treatment process and apparatus
US08697130 Division US6156192A (en) 1993-04-28 1996-08-20 Waste treatment system
US5725762A true US5725762A (en) 1998-03-10
ID=21983971
US08053402 Expired - Fee Related US5447630A (en) 1993-04-28 1993-04-28 Materials treatment process and apparatus
US08445726 Expired - Fee Related US5725762A (en) 1993-04-28 1995-05-22 Separation treatment system
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Owner name: WASTECH INTERNATIONAL, INC., NEW HAMPSHIRE
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BEAL, THOMAS;MCHENRY, STEVEN;RUMMLER, JOHN M.;REEL/FRAME:007497/0624