Source: http://www.google.com/patents/US5725762?ie=ISO-8859-1&dq=ascentive
Timestamp: 2014-04-19 12:31:24
Document Index: 299196838

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

Patent US5725762 - Separation treatment system - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA 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...http://www.google.com/patents/US5725762?utm_source=gb-gplus-sharePatent US5725762 - Separation treatment systemAdvanced Patent SearchPublication numberUS5725762 APublication typeGrantApplication numberUS 08/445,726Publication dateMar 10, 1998Filing dateMay 22, 1995Priority dateApr 28, 1993Fee statusLapsedAlso published asCA2160465A1, CA2160465C, DE69422397D1, DE69422397T2, EP0696259A1, EP0696259A4, EP0696259B1, US5447630, US5843304, US6132600, US6156192, WO1994025402A1Publication number08445726, 445726, US 5725762 A, US 5725762A, US-A-5725762, US5725762 A, US5725762AInventorsThomas Beal, Steven McHenry, John M. RummlerOriginal AssigneeWastech International, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (100), Non-Patent Citations (32), Referenced by (20), Classifications (83), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetSeparation treatment systemUS 5725762 AAbstract 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.
What is claimed as new and desired to be secured by Letters Patent of the United States is: 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.
5. The separation treatment system of claim 3, wherein said guide wire assembly extends from said necked portion at an angle of 25 portion.
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.
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; an isolation valve disposed between said solid outlet means and said microwave cavity; a sump disposed below said microwave cavity for collecting residual liquids draining from solids held in said microwave cavity. Description
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 CO.sub.2 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 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 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.
The reaction proceeds rapidly in the presence of excess OCl.sup.- at a pH&gt;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 &#8594;N.sub.2.sup.&#8593; +CL.sup.- +2H.sub.2 O (not electron balanced) 2NH4.sup.+ +O.sub.3 &#8594;N.sub.2.sup.&#8593; +2H.sup.+ +3H.sub.2 O
Both of the above reactions shown proceed at pH&gt;9 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.
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