# Patent

## Title
Portable compact wastewater concentrator

## Abstract

A compact and portable liquid concentrator includes a gas inlet, a gas exit and a flow corridor connecting the gas inlet and the gas exit, wherein the flow corridor includes a narrowed portion that accelerates the gas through the flow corridor. A liquid inlet injects liquid into the gas stream at a point prior to the narrowed portion so that the gas-liquid mixture is thoroughly mixed within the flow corridor, causing a portion of the liquid to be evaporated. A demister or fluid scrubber downstream of the narrowed portion removes entrained liquid droplets from the gas stream and re-circulates the removed liquid to the liquid inlet through a re-circulating circuit. The compact and portable liquid concentrator is mountable on a truck bed or skid for easy transportation to remote sites.

## Background
FIELD OF THE DISCLOSURE
This application relates generally to liquid concentrators, and more specifically to compact, portable, inexpensive wastewater concentrators that can be easily connected to and use sources of waste heat.
BACKGROUND
Concentration of volatile substances can be an effective form of treatment or pretreatment for a broad variety of wastewater streams and may be carried out within various types of commercial processing systems. At high levels of concentration, many wastewater streams may be reduced to residual material in the form of slurries containing high levels of dissolved and suspended solids. Such concentrated residual may be readily solidified by conventional techniques for disposal within landfills or, as applicable, delivered to downstream processes for further treatment prior to final disposal. Concentrating wastewater can greatly reduce freight costs and required storage capacity and may be beneficial in downstream processes where materials are recovered from the wastewater.
An important measure of the effectiveness of a wastewater concentration process is the volume of residual produced in proportion to the volume of wastewater entering the process. In particular, low ratios of residual volume to feed volume (high levels of concentration) are the most desirable. Where the wastewater contains dissolved and/or suspended non-volatile matter, the volume reduction that may be achieved in a particular concentration process that relies on evaporation of volatiles is, to a great extent, limited by the method chosen to transfer heat to the process fluid.
Conventional processes that affect concentration by evaporation of water and other volatile substances may be classified as direct or indirect heat transfer systems depending upon the method employed to transfer heat to the liquid undergoing concentration (the process fluid). Indirect heat transfer devices generally include jacketed vessels that contain the process fluid, or plate, bayonet tube or coil type heat exchangers that are immersed within the process fluid. Mediums such as steam or hot oil are passed through the jackets or heat exchangers in order to transfer the heat required for evaporation. Direct heat transfer devices implement processes where the heating medium is brought into direct contact with the process fluid, which occurs in, for example, submerged combustion gas systems.
Conventional direct and indirect concentration systems are generally large and stationary. As a result, wastewater streams are generally transported to the conventional concentration systems, sometimes over great distances. The transportation costs of moving the wastewater to the concentrator can make the difference whether a certain project is economically feasible. For example, natural gas wells generate produced water that must be disposed of in some way. Transporting the produced water to a fixed base concentration system may limit the number of economically feasible natural gas well sites.
In addition to being difficult to move, conventional concentration systems suffer from other problems, such as scaling of heat transfer surfaces, fouling of internal components due to high levels of suspended solids in the wastewater streams.
SUMMARY
A portable compact liquid concentrating device disclosed herein may be easily connected to a source of waste heat, such as a landfill gas flare or a combustion engine exhaust stack, and use this waste heat to perform a direct heat transfer concentration process without the need of large and expensive containment vessels and without a lot of expensive high temperature resistant materials. The compact liquid concentrator includes a gas inlet, a gas exit and a mixing or flow corridor connecting the gas inlet and the gas exit, wherein the flow corridor includes a narrowed portion that accelerates the gas through the flow corridor. A liquid inlet located between the gas inlet and the narrowed portion of the flow corridor, injects liquid into the gas stream at a point prior to the narrowed portion so that the gas-liquid mixture is thoroughly mixed within the flow corridor, causing a portion of the liquid to be evaporated or concentrated. A demister or fluid scrubber downstream of the narrowed portion, and connected to the gas exit, removes entrained liquid droplets from the gas stream and re-circulates the removed liquid to the liquid inlet through a re-circulating circuit. Fresh liquid to be concentrated is also introduced into the re-circulating circuit at a rate sufficient to offset the combined total of liquid evaporated in the flow corridor and any concentrated liquid that is withdrawn from the process. The portable compact liquid concentrating device may be mounted on a truck bed or skid for easy transportation to remote sites.
A method of preparing a portable wastewater concentrator for transportation to an operation site includes providing a wastewater concentrator having a flare assembly; an air pre-treatment assembly; a concentrator assembly including a quenching section, a venturi section, and an elbow section; a fluid scrubber; and an exhaust section having a stack and an induction fan; removing the quenching section and the venturi section from the elbow section and securing the quenching section, the venturi section, and the elbow to a truck bed, and removing the stack from the induction fan and securing the stack and the induction fan to the truck bed.



BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a portable compact liquid concentrator;
FIG. 2 is a side elevational cross-section of the liquid concentrating portion of the portable compact liquid concentrator of FIG. 1 mounted on a transport skid;
FIG. 3 is a top plan view of the liquid concentrating section of FIG. 2; and
FIG. 4 is a perspective view of a wastewater concentration system including a portable compact liquid concentrator mounted on a truck bed.



DETAILED DESCRIPTION
FIG. 1 illustrates one embodiment of a portable compact liquid concentrator 110, which is connected to a source of waste heat in the form of a landfill flare. Generally speaking, the compact liquid concentrator 110 of FIG. 1 operates to concentrate wastewater, such as landfill leachate or produced water from natural gas wells, using exhaust or waste heat created within a landfill flare (or a natural gas flare) which burns landfill gas (or natural gas) in a manner that meets the standards set by the U.S. Environmental Protection Agency (EPA). Typically, the gas exiting the flare is between 1000 and 1500 degrees Fahrenheit and may reach 1800 degrees Fahrenheit.
As illustrated in FIG. 1, the portable compact liquid concentrator 110 generally includes or is connected to a flare assembly 115, and includes a heat transfer assembly 117, an air pre-treatment assembly 119, a concentrator assembly 120, a fluid scrubber 122, and an exhaust section 124. The flare assembly 115 includes a flare 130, which burns landfill gas (or natural gas) therein according to any known principles, and a flare cap assembly 132. The flare cap assembly 132 includes a moveable cap 134 (e.g., a flare cap, an exhaust gas cap, etc.) which covers the top of the flare 130, or other type of stack (e.g., a combustion gas exhaust stack), to seal off the top of the flare 130 when the flare cap 134 is in the closed position, or to divert a portion of the flare gas in a partially closed position, and which allows gas produced within the flare 130 to escape to the atmosphere through an open end that forms a primary gas outlet 143, when the flare cap 134 is in an open or partially open position. The flare cap assembly 132 also includes a cap actuator 135, such as a motor (e.g., an electric motor, a hydraulic motor, a pneumatic motor, etc.) which moves the flare cap 134 between the fully open and the fully closed positions.
If desired, the flare 130 may include an adapter section 138 including the primary combustion gas outlet 143 and a secondary combustion gas outlet 141 upstream of the primary combustion gas outlet 143. When the flare cap 130 is in the closed position, combustion gas is diverted through the secondary combustion gas outlet 141. The adapter section 138 may include a connector section 139 that connects the flare 130 (or exhaust stack) to the heat transfer section 117 using a 90 degree elbow or turn.
The heat transfer assembly 117 includes a transfer pipe 140, which connects to an inlet of the air pre-treatment assembly 119 to the flare 130 and, more particularly, to the adaptor section 138 of the flare 130. A support member 142, in the form of a vertical bar or pole, supports the heat transfer pipe 140 between the flare 130 and the air pre-treatment assembly 119 at a predetermined level or height above the ground. The heat transfer pipe 140 is connected to the connector section 139 or the adapter section 138 at the secondary combustion gas outlet 141, the transfer pipe forming a portion of a fluid passageway between the adapter section 138 and a secondary process, such as a fluid concentrating process.
The air pre-treatment assembly 119 includes a vertical piping section 150 and an ambient air valve 152 disposed at the top of the vertical piping section 150. The ambient air valve 152 (also referred to as a bleed valve) forms a fluid passageway between the heat transfer pipe 140 (or air pre-treatment assembly 119) and the atmosphere. The ambient air valve 152 operates to allow ambient air to flow into the interior of the air pre-treatment assembly 119 to mix with the hot gas coming from the flare 130. The ambient air valve 152 generally allows the gas from the flare 130 to be cooled before entering into the concentrator assembly 120.
The concentrator assembly 120 includes a lead-in section 156 having a reduced cross-section which mates the bottom of the piping section 150 to a quencher 159 of the concentrator assembly 120. The concentrator assembly 120 also includes a first fluid inlet 160, which injects new or untreated liquid to be concentrated, such as landfill leachate or produced water, into the interior of the quencher 159. While not shown in FIG. 1, the inlet 160 may include a coarse sprayer with a large nozzle for spraying the untreated liquid into the quencher 159. As will be understood, the quencher 159 operates to quickly reduce the temperature of the gas stream (e.g., from about 900 degrees Fahrenheit to less than 200 degrees Fahrenheit) while performing a high degree of evaporation on the liquid injected at the inlet 160. If desired, but not specifically shown in FIG. 1, a temperature sensor may be located at or near the exit of the piping section 150 or in the quencher 159 and may be used to control the position of the ambient air valve to thereby control the temperature of the gas present at the inlet of the concentrator assembly 120.
The quencher 159 is connected to a liquid injection chamber which is connected to narrowed portion or venturi section 162 which has a narrowed cross section with respect to the quencher 159 and which has a venturi plate 163 disposed therein. The venturi plate 163 creates a narrow passage through the venturi section 162, which creates a large pressure drop between the entrance and the exit of the venturi section 162. This large pressure drop causes turbulent gas flow within the quencher 159 and the top or entrance of the venturi section 162, and causes a high rate of gas flow out of the venturi section 162, both of which lead to thorough mixing of the gas and liquid and thus evaporation of the liquid in the venturi section 162.
A re-circulating pipe 166 extends around opposite sides of the entrance of the venturi section 162 and operates to inject partially concentrated (i.e., re-circulated) liquid into the venturi section 162 to be further concentrated and/or to prevent the formation of dry particulate within the concentrator assembly 120 through multiple fluid entrances located on one or more sides of the flow corridor. A number of pipes, such as three pipes of, for example, 1⁄2 inch diameter, may extend from each of the opposites legs of the pipe 166 partially surrounding the venturi section 162, and through the walls and into the interior of the venturi section 162. Because the liquid being ejected into the concentrator 110 at this point is re-circulated liquid, and is thus either partially concentrated or being maintained at a particular equilibrium concentration and more prone to plug a spray nozzle than the less concentrated liquid injected at the inlet 160, this liquid may be directly injected without a sprayer so as to prevent clogging. However, if desired, a baffle in the form of a flat plate may be disposed in front of each of the openings of the 1⁄2 pipes to cause the liquid being injected at this point in the system to hit the baffle and disperse into the concentrator assembly 120 as smaller droplets. In any event, the configuration of this re-circulating system distributes or disperses the re-circulating liquid better within the gas stream flowing through the concentrator assembly 120.
The combined hot gas and liquid flows in a turbulent manner through the venturi section 162. As noted above, the venturi section 162, which has a moveable venturi plate 163 disposed across the width of the concentrator assembly 120, causes turbulent flow and complete mixture of the liquid and gas, causing rapid evaporation of the liquid within the gas. Because the mixing action caused by the venturi section 162 provides a high degree of evaporation, the gas cools substantially in the concentrator assembly 120, and exits the venturi section 162 into a flooded elbow 164 at high rates of speed. In fact, the temperature of the gas-liquid mixture at this point may be about 160 degrees Fahrenheit.
The bottom of the flooded elbow 164 has liquid disposed therein, and the gas-liquid mixture exiting the venturi section 162 at high rates of speed impinges on the liquid in the bottom of the flooded elbow 164 as the gas-liquid mixture is forced to turn 90 degrees to flow into the fluid scrubber 122. The interaction of the gas-liquid stream with the liquid within the flooded elbow 164 removes liquid droplets from the gas-liquid stream, and prevents suspended particles within the gas-liquid stream from hitting the bottom of flooded elbow 164 at high rates of speeds, thereby preventing erosion of the metal wall of the flooded elbow 164.
After leaving the flooded elbow 164, the gas-liquid stream in which evaporated liquid and some liquid and other particles still exist, flows through the fluid scrubber 122 which is, in this case, a cross-flow fluid scrubber. The fluid scrubber 122 includes various screens or filters which aid in removal of entrained liquids from the gas-liquid stream and removes other particles that might be present with the gas-liquid stream. In one particular example, the cross flow scrubber 122 may include an initial coarse impingement baffle 169 at the input thereof, which is designed to remove liquid droplets in the range of 50 to 100 microns in size or higher. Thereafter, two removable filters in the form of chevrons 170 are disposed across the fluid path through the fluid scrubber 122, and the chevrons 170 may be progressively sized or configured to remove liquid droplets of smaller and smaller sizes, such as 20-30 microns and less than 10 microns. Of course, more or fewer filters or chevrons could be used.
Liquid captured by the filters 169 and 170 gravity drains into a reservoir or sump 172 located at the bottom of the fluid scrubber 122. The sump 172, which may hold, for example 200 gallons of liquid or more, thereby collects concentrated fluid containing dissolved and suspended solids removed from the gas-liquid stream and operates as a reservoir for a source of re-circulating concentrated liquid back to the concentrator assembly 120 to be further treated and/or to prevent the formation of dry particulate within the concentrator assembly 120.
As illustrated in FIG. 1, a return line 180, as well as a pump 182, operate to re-circulate fluid removed from the gas-liquid stream from the sump 172 back to the concentrator 120 and thereby complete a fluid or liquid re-circulating circuit. Likewise, a pump 184 may be provided within an input line 186 to pump new or untreated liquid, such as landfill leachate, to the input 160 of the concentrator assembly 120. Also, one or more sprayers may be disposed inside the fluid scrubber 122 adjacent the chevrons 170 and may be operated periodically to spray clean water or a portion of the wastewater feed on the chevrons 170 to keep them clean.
Concentrated liquid also be removed from the bottom of the fluid scrubber 122 via the exit port 173 and may be further processed or disposed of in any suitable manner in a secondary re-circulating circuit. In particular, the concentrated liquid removed by the exit port 173 contains a certain amount of suspended solids, which preferably may be separated from the liquid portion of the concentrated liquid and removed from the system using a secondary re-circulating circuit. For example, concentrated liquid removed from the exit port 173 may be transported through a secondary concentrated wastewater circuit (not shown) to a solid/liquid separating device, such as a settling tank, a vibrating screen, a rotary vacuum filter, or a filter press. After the suspended solids and liquid portion of the concentrated wastewater are separated by the solid/liquid separating device, the liquid portion of the concentrated wastewater may be returned to the sump 172 for further processing in the first or primary re-circulating circuit connected to the concentrator.
The gas, which flows through and out of the fluid scrubber 122 with the liquid and suspended solids removed therefrom, exits out of piping or ductwork at the back of the fluid scrubber 122 (downstream of the chevrons 170) and flows through an induced draft fan 190 of the exhaust assembly 124, from where it is exhausted to the atmosphere in the form of the cooled hot inlet gas mixed with the evaporated water vapor. Of course, an induced draft fan motor 192 is connected to and operates the fan 190 to create negative pressure within the fluid scrubber 122 so as to ultimately draw gas from the flare 130 through the transfer pipe 140, the air pre-treatment assembly 119 and the concentrator assembly 120.
While the speed of the induced draft fan 190 can be varied by a device such as a variable frequency drive operated to create varying levels of negative pressure within the fluid scrubber 122 and thus can usually be operated within a range of gas flow capacity to assure complete gas flow from the flare 130, if the gas being produced by the flare 130 is not of sufficient quantity, the operation of the induced draft fan 190 cannot necessarily be adjusted to assure a proper pressure drop across the fluid scrubber 122 itself. That is, to operate efficiently and properly, the gas flowing through the fluid scrubber 122 must be at a sufficient (minimal) flow rate at the input of the fluid scrubber 122. Typically this requirement is controlled by keeping at least a preset minimal pressure drop across the fluid scrubber 122. However, if the flare 130 is not producing at least a minimal level of gas, increasing the speed of the induced draft fan 190 will not be able to create the required pressure drop across the fluid scrubber 122.
To compensate for this situation, the cross flow scrubber 122 may optionally include a gas re-circulating circuit which can be used to assure that enough gas is present at the input of the fluid scrubber 122 to enable the system to acquire the needed pressure drop across the fluid scrubber 122. In particular, the gas re-circulating circuit includes a gas return line or return duct 196 which connects the high pressure side of the exhaust assembly 124 (e.g., downstream of the induced draft fan 190) to the input of the fluid scrubber 122 (e.g., a gas input of the fluid scrubber 122) and a baffle or control mechanism 198 disposed in the return duct 196 which operates to open and close the return duct 196 to thereby fluidly connect the high pressure side of the exhaust assembly 124 to the input of the fluid scrubber 122. During operation, when the gas entering into the fluid scrubber 122 is not of sufficient quantity to obtain the minimal required pressure drop across the fluid scrubber 122, the baffle 198 (which may be, for example, a gas valve, a damper such as a louvered damper, etc.) is opened to direct gas from the high pressure side of the exhaust assembly 124 (i.e., gas that has traveled through the induced draft fan 190) back to the input of the fluid scrubber 122. This operation thereby provides a sufficient quantity of gas at the input of the fluid scrubber 122 to enable the operation of the induced draft fan 190 to acquire the minimal required pressure drop across the fluid scrubber 122. In some embodiments, the induced draft fan 190 may provide the necessary minimum gas flow rate and the gas re-circulating circuit may not be required.
The portable compact liquid concentrator 110 is also a very fast-acting concentrator. Because the portable compact liquid concentrator 110 is a direct contact type of concentrator, it is not subject to deposit buildup, clogging and fouling to the same extent as most other concentrators. Still further, the ability to control the flare cap 134 to open and close, depending on whether the concentrator 110 is being used or operated, allows the flare 130 to be used to burn gas without interruption when starting and stopping the concentrator 110. More particularly, the flare cap 134 can be quickly opened at any time to allow the flare 130 to simply burn gas as normal while the concentrator 110 is shut down. On the other hand, the flare cap 134 can be quickly closed when the concentrator 110 is started up, thereby diverting hot gasses created in the flare 130 to the concentrator 110, and allowing the concentrator 110 to operate without interrupting the operation of the flare 130. In either case, the concentrator 110 can be started and stopped based on the operation of the flare cap 134 without interrupting the operation of the flare 130.
Moreover, due to the compact configuration of the air pre-treatment assembly 119, the concentrator assembly 120 and the fluid scrubber 122, parts of the concentrator assembly 120, the fluid scrubber 122, the draft fan 190 and at least a lower portion of the exhaust section 124 can be permanently mounted on (connected to and supported by) a skid or plate 230, as illustrated in FIG. 1. The upper parts of the concentrator assembly 120, the air pre-treatment assembly 119 and the heat transfer pipe 140, as well as a top portion of the exhaust stack, may be removed and stored on the skid or plate 230 for transport, or may be transported in a separate truck. Because of the manner in which the lower portions of the concentrator 110 can be mounted to a skid or plate, the concentrator 110 is easy to move and install. In particular, during set up of the concentrator 110, the skid 230, with the fluid scrubber 122, the flooded elbow 164 and the draft fan 190 mounted thereon, may be offloaded at the site at which the concentrator 110 is to be used by simply offloading the skid 230 onto the ground or other containment area at which the concentrator 110 is to be assembled. Thereafter, the venturi section 162, the quencher 159, and the air pre-treatment assembly 119 may be placed on top of and attached to the flooded elbow 164. The piping section 150 may then be extended in height to match the height of the flare 130 to which the concentrator 110 is to be connected. In some cases, this may first require mounting the flare cap assembly 132 onto a pre-existing flare 130. Thereafter, the heat transfer pipe 140 may be raised to the proper height and attached between the flare 130 and the air pre-treatment assembly 119, while the support member 142 is disposed in place.
Because most of the pumps, fluid lines, sensors and electronic equipment are disposed on or are connected to the fluid concentrator assembly 120, the fluid scrubber 122 or the draft fan assembly 190, set up of the portable compact liquid concentrator 110 at a particular site does not require much fluid piping or electrical work at the site. As a result, the portable compact liquid concentrator 110 is relatively easy to install and to set up at (and to disassemble and remove from) a particular site. Moreover, because a majority of the components of the portable compact liquid concentrator 110 are permanently mounted to the skid 230, the portable compact liquid concentrator 110 can be easily transported around on a truck or other delivery vehicle and can be easily dropped off and installed at particular location, such as next to a landfill flare.
FIGS. 2 and 3 illustrate one embodiment of a portable compact liquid concentrator 700 mounted on a truck bed or skid 230. In one embodiment, some of the components of the portable compact liquid concentrator 700 may remain on the skid 230 and be used to perform concentration activities, while others of these components may be removed and installed near a source of waste heat. The portable compact liquid concentrator 700 has a gas inlet 720 and a gas exit 722. A flow corridor 724 connects the gas inlet 720 to the gas exit 722. The flow corridor 724 has a narrowed or venturi portion 726 that accelerates the gas through the flow corridor 724. Gas is drawn into a quencher section 759 by an induction fan 750. A liquid inlet 730 injects a liquid into the gas stream in the quencher section 759. Gas is directed from the venturi section 726 into the demister (or crossflow scrubber) 734 by an elbow section 733. After exiting the demister 734, the gas is directed to the gas exit 722 through a stack 723. Of course, as described above, some of these components may be removed from the bed and installed in close proximity to a source of waste heat while others of these components (such as the demister 734, the stack 723 and the gas exit 722) may remain on the skid 230.
As the gas-liquid mixture passes through the venturi portion 726 of the flow corridor 724, a portion of the liquid evaporates and is absorbed by the gas, thus consuming a large portion of heat energy within the waste heat as latent heat that exits the concentrator system 700 as water vapor within the exhaust gas.
In the embodiment shown in FIGS. 2 and 3, portions of the portable compact liquid concentrator 700 may be disassembled and mounted on a skid 230 for transportation. For example, the quenching section 759 and the venturi section 726 may be removed from the elbow section 733, as illustrated by the dashed line in FIG. 2 Likewise, the stack 723 may be removed from the induction fan 750 as illustrated by the dashed line in FIG. 2. The elbow section 733, demister 734, and induction fan 750 may be secured on a pallet or trailer skid 799 as a unit. The stack 723 may be secured separately to skid 230. The quenching section 759 and venturi section 726 may also be secured to the pallet or trailer skid 230, or alternatively transported separately. The compartmentalized construction of the liquid concentrator 700 simplifies transportation of the liquid concentrator 700.
FIG. 4 illustrates a wastewater concentration system 1000 including one embodiment of the portable compact liquid concentrator 1110 mounted on a first truck bed 1112 and a second truck bed 1112′. In this embodiment, the flare assembly 1115, the air pre-treatment assembly 1119, the concentrator assembly 1120, the fluid scrubber 1122, and the exhaust section 1124 are all mounted on the first truck bed 1112. An exhaust stack 1125 and a pre-treatment and/or water recovery section 1127 are mounted on the second truck bed 1112′. Because the portable compact liquid concentrator 1110 is mounted on one or more truck beds 1112, 1112′, the portable compact liquid concentrator 1110 is easily transported to remote operating sites, such as natural gas well pads and landfills. The wastewater concentration system 1000 may also include residual material bins 1131 for disposal of residual solid or slurry material collected from the portable compact liquid concentrator 1110 and one or more frac tanks 1133 that hold reclaimed water from the pre-treatment and water recovery section 1127. The reclaimed water may be used as frac water for new natural gas wells.
While certain representative embodiments and details have been shown for purposes of illustrating the invention, it will be apparent to those skilled in the art that various changes in the methods and apparatus disclosed herein may be made without departing from the scope of the invention.

## Claims

1. A wastewater concentrator system comprising:
a portable compact wastewater concentrator including a flare assembly, an air pre-treatment assembly, a concentrator assembly, the concentrator assembly having a quenching section, a venturi section, and an elbow section, a fluid scrubber, and an exhaust section, the exhaust section having a gas exit, an induction fan, and a stack;
a pre-treatment and water recovery section;
a first truck bed, and
a second truck bed,
wherein the flare assembly, the air pre-treatment assembly, the concentrator assembly, the fluid scrubber and the exhaust section are mounted on the first truck bed for efficient transportation of the wastewater concentrator system to remote operating locations, the quenching section and the venturi section being removed from the elbow section and the stack being removed from the gas exit, the stack being secured to the first truck bed alongside the fluid scrubber, and the pre-treatment and water recovery section are mounted on the second truck bed.

2. The wastewater concentrator system of claim 1, wherein the first truck bed and the second truck bed are positioned adjacent one another and the compact wastewater concentrator is fluidly connected with the pre-treatment and water recovery section.

3. The wastewater concentrator system of claim 1, wherein the first and second truck beds are located adjacent to a natural gas well pad.

4. The wastewater concentrator system of claim 1, further comprising a residual material bin for storing concentrated slurry.

5. The wastewater concentrator system of claim 1, further comprising a frac tank for storing reclaimed liquid for further use in a fracking operation.

6. The wastewater concentrator system of claim 1, wherein the flooded elbow, a demister, and an induction fan are secured to the first truck bed as a unit.