CN114684987A

CN114684987A - MVR wastewater treatment device and using method thereof

Info

Publication number: CN114684987A
Application number: CN202210176925.6A
Authority: CN
Inventors: 谭德军
Original assignee: Wuhan Hongao Green Energy Engineering Co ltd
Current assignee: Wuhan Hongao Green Energy Engineering Co ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-07-01

Abstract

The invention discloses an MVR wastewater treatment device and a use method thereof, wherein a liquid separator comprises a tank body, a motor is fixedly installed in an inner cavity of the lower surface of the tank body, a filter screen plate is fixedly sleeved on the upper surface of a third connecting pipe, a sleeve plate is fixedly sleeved on the surface of a bearing, a hollow annular plate is fixedly communicated with one end of an air pipe, air nozzles are symmetrically and threadedly sleeved on the top of the air pipe, an air pump is fixedly installed on the surface of the tank body through a mounting plate, gears are fixedly sleeved on the bottom of the sleeve plate and the output end of the motor, and a sliding annular plate is slidably sleeved on the surface of the hollow annular plate. The MVR wastewater treatment device and the use method thereof solve the problems that in evaporative crystallization treatment, droplets in liquid cannot be removed when a gas-liquid separator in the MVR wastewater treatment device removes the droplets, and a small part of steam cannot be collected together with the formed liquid when the droplets cannot be removed, so that the separation effect cannot be improved.

Description

MVR wastewater treatment device and use method thereof

Technical Field

The invention relates to the technical field of wastewater treatment, in particular to an MVR wastewater treatment device and a using method thereof.

Background

With the rapid development of the chemical industry process, the discharge amount of high-salinity wastewater generated in various fields is larger and larger, the influence of the discharge on the environment is increased day by day, and the environmental ecology and the human health safety are seriously influenced. And high-salt wastewater refers to wastewater containing organic matter and at least 3.5% (mass fraction) of total soluble solids; the salts are mainly soluble inorganic salts such as Cl-, SO42-, Na +, Ca2+ and the like. The promulgation of a water pollution prevention action plan puts higher requirements on the comprehensive control of pollutant discharge, the strong grasping of industrial pollution prevention and particularly on the treatment of high-salinity wastewater.

The existing MVR high-salt wastewater treatment mode is characterized in that a heating method is utilized to vaporize partial solvent in a solution, so that the salt concentration of the solution is increased, a condition is created for precipitation of solute, and zero liquid emission can be finally realized through an evaporative crystallization technology for high-salt wastewater generated in the wastewater pretreatment process.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an MVR wastewater treatment device and a use method thereof, and solves the problems that in evaporation crystallization treatment, when droplets in liquid are removed in a gas-liquid separator, the droplets cannot be removed, and when the droplets cannot be removed, a small part of steam is collected together with the formed liquid, so that the separation effect cannot be improved.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a MVR effluent treatment plant, includes the base, the top of base is fixedly connected with mount pad and pipeline respectively, the centre of pipeline is provided with the heater, the top fixedly connected with compressor of mount pad, the output of compressor is provided with the air-blower, it has the conveyer pipe to be fixed the intercommunication between air-blower and the heater, the corner fixedly connected with liquid separator at base top.

The liquid separator comprises a tank body, wherein the upper surface of the tank body is fixedly communicated with a second connecting pipe, the inner cavity of the lower surface of the tank body is fixedly communicated with a first connecting pipe, one end of the first connecting pipe extends out of the surface of the tank body, the surface of the tank body is fixedly sleeved with a third connecting pipe, one end of the third connecting pipe is positioned in the middle of the inner cavity of the tank body, the inner cavity of the lower surface of the tank body is fixedly provided with a motor, the upper surface of the third connecting pipe is fixedly sleeved with a filter screen plate, the lower surface of the third connecting pipe is fixedly sleeved with a bearing, the surface of the bearing is fixedly sleeved with a sleeve plate, the surface of the sleeve plate is symmetrically and fixedly connected with an air pipe, one end of the air pipe is fixedly communicated with a hollow annular plate, the top symmetrical threads of the air pipe are sleeved with an air nozzle, the surface of the tank body is fixedly provided with an air pump through a mounting plate, and the bottom of the sleeve plate and the output end of the motor are fixedly sleeved with gears, the surface of the hollow annular plate is sleeved with a sliding annular plate in a sliding manner.

The port symmetry fixedly connected with plastics triangle piece of jet head, be provided with telescopic machanism between the port of the surface of plastics triangle piece and jet head, and telescopic machanism includes the sleeve pipe, the slide bar has been cup jointed in the sheathed tube inner chamber slip, fixedly connected with spring between the one end of slide bar and the sheathed tube inner chamber.

Preferably, the output end of the air pump penetrates through the surface of the tank body through an air pipe and is fixedly communicated with the surface of the sliding ring plate.

Preferably, the lower surface of the tank body is movably connected with an outer sealing door through a hinge, the tank body is fixedly connected to the top of the base, and one end of the third connecting pipe is fixedly communicated with a connecting port of the air blower.

Preferably, the surface of the filter screen plate is mutually connected with the inner wall of the tank body, and the surface of the hollow annular plate and the inner wall of the tank body slide mutually.

Preferably, the surfaces of the gears are engaged with each other, and one ends of the second connecting pipe and the first connecting pipe are fixedly communicated with the surface of the pipeline.

Preferably, the surface of the conveying pipe is provided with an adjusting valve, and the top of the pipeline is fixedly communicated with a liquid inlet.

Preferably, one end of the sliding rod is fixedly connected to the surface of the plastic triangular plate, and one end of the spring is fixedly connected to the port of the air nozzle.

The invention also discloses a use method of the MVR wastewater treatment device, which comprises the following steps:

s1, firstly, high-concentration high-salt wastewater enters through a liquid inlet, then the wastewater flows into heat exchange tubes in an inner cavity of a heater, liquid films are formed on the inner walls of a plurality of heat exchange tubes of the heater, then a compressor and an air blower on the top of an installation seat are started, hot gas generated by the compressor is sent into an inner cavity of a conveying pipe by the air blower, then the hot gas heats the tubes in the heater, the high-salt wastewater in the inner cavity of the heater is heated, boiled and evaporated, then the boiled wastewater falls to the bottommost part of the inner cavity of the tube to form concentrated liquid and secondary steam, the steam of the steam enters an inner cavity of a tank body through a second connecting tube for separation, liquid droplets carried by the secondary steam are separated through absorption of the air blower, and then the separated droplets and the gas enter the air blower again through a third connecting tube;

s2, the residual liquid passes through the filter screen plate to carry out secondary liquid separation again, so that the spray which is very little adhered to the liquid is filtered and separated again, because the density of the spray is larger than that of the liquid, the spray is remained on the filter screen plate, the liquid separated for the second time falls on the bottom of the inner cavity of the tank body and returns to the bottom of the inner cavity of the pipeline again through the first connecting pipe, then the air pump and the motor are started, firstly, the air generated by the air pump is conveyed into the inner cavity of the hollow annular plate through the sliding annular plate, then the air flows into the inner cavity of the sleeve plate, and finally the air is sprayed upwards through the air nozzle, and meanwhile, the output end of the motor can drive the gear to rotate in a meshed manner to drive the sleeve plate to rotate on the bearing, so that the air nozzle can rotate to spray air to blow away the droplets remained on the surface of the filter screen plate, and the secondarily separated droplets can be sucked by the air blower while being blown up;

s3, when the jet head jets air, the impact force of the air can drive the plastic triangular plate to open outwards and drive the slide bar to retract in the inner cavity of the sleeve, so that the port of the jet head is opened, thereby realizing the phenomenon of jetting air, and when the jet head does not jet air, the slide bar can reset through the elasticity of the spring and drive the plastic triangular plates to be mutually attached, thereby realizing the sealing state, and preventing the separated concentrated solution from entering the inner cavity of the jet head;

s4, compressing and heating the gas sucked by the blower by a compressor, recycling the gas again, adjusting the size of the gas by an adjusting valve, and finally crystallizing the concentrated solution at the bottom of the inner cavity of the pipeline to finish the treatment of the high-salinity wastewater.

Advantageous effects

The invention provides an MVR wastewater treatment device and a using method thereof. Compared with the prior art, the method has the following beneficial effects:

1. the MVR wastewater treatment device and the use method thereof have the advantages that secondary liquid separation is carried out again through the filter screen plate by the residual liquid, so that a small amount of droplets adhered to the liquid are filtered and separated again, the droplets are larger than the liquid in density and can remain on the filter screen plate, the liquid separated for the second time falls on the bottom of the inner cavity of the tank body and returns to the bottom of the inner cavity of the pipeline again through the first connecting pipe, then the air pump is started, gas generated by the air pump is conveyed into the inner cavity of the hollow ring plate through the sliding ring plate and then enters the inner cavity of the sleeve plate, finally the droplets remained on the surface of the filter screen plate are blown up through the upward air injection of the air injection head, the droplets separated for the second time can be sucked by the air blower while being blown up, and the problem that in evaporative crystallization treatment, when the droplets in the liquid are removed in the gas-liquid separator is solved, the droplets cannot be removed, and if the droplets cannot be removed, a very small portion of the steam is collected together with the forming liquid, and therefore the separation effect cannot be improved.

2. This MVR effluent treatment plant and application method thereof makes through spouting at the jet-propelled head, and the impact force of its gas can drive plastics triangular plate outwards to drive the slide bar and carry out the indentation in sheathed tube inner chamber, make the port of jet-propelled head open, realize jet-propelled phenomenon, when not spouting in addition, can pass through the elasticity of spring, make the slide bar reset, and drive the mutual laminating of plastics triangular plate, realize encapsulated situation, make the concentrate of separation can not enter into the inner chamber of jet-propelled head.

3. This MVR effluent treatment plant and application method thereof through starter motor, makes the output of motor can drive the gear and mesh and rotate, drives the lagging and rotates on the bearing, realizes that the rotatory jet-propelled of jet-propelled head, makes the jet-propelled scope increase, from making jet-propelled effect better.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a liquid separator according to the present invention;

FIG. 3 is a cross-sectional view of a liquid separator according to the present invention;

FIG. 4 is a partial schematic view of a liquid separator of the present invention construction;

FIG. 5 is a schematic view of a showerhead constructed in accordance with the present invention;

fig. 6 is a schematic view of the telescopic mechanism of the present invention.

In the figure: 1. a base; 2. a mounting base; 3. a compressor; 4. a blower; 5. a liquid separator; 51. a tank body; 52. an air pump; 54. an outer sealing door; 55. a first connecting pipe; 56. a second connecting pipe; 57. a third connecting pipe; 58. a filter screen plate; 59. a motor; 510. a bearing; 511. sheathing; 512. an air tube; 513. a gas showerhead; 514. a hollow ring plate; 515. a gear; 516. a slip ring plate; 517. plastic triangular plates; 518. a telescoping mechanism; 5181. a sleeve; 5182. a slide bar; 5183. a spring; 6. a pipeline; 7. a heater; 8. a liquid inlet; 9. a delivery pipe; 10. and adjusting the valve.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention provides a technical solution: the utility model provides a MVR effluent treatment plant reaches, the on-line screen storage device comprises a base 1, base 1's top difference fixedly connected with mount pad 2 and pipeline 6, the centre of pipeline 6 is provided with heater 7, wherein heater 7 comprises casing and a plurality of heat exchange tube, the top fixedly connected with compressor 3 of mount pad 2, compressor 3's output is provided with air-blower 4, fixed intercommunication has conveyer pipe 9 between air-blower 4 and the heater 7, the corner fixedly connected with liquid separator 5 at base 1 top, conveyer pipe 9's surface is provided with governing valve 10, the fixed intercommunication in top of pipeline 6 has inlet 8.

Referring to fig. 2-5, the liquid separator 5 includes a tank 51, a second connecting pipe 56 is fixedly connected to an upper surface of the tank 51, a first connecting pipe 55 is fixedly connected to an inner cavity of a lower surface of the tank 51, one end of the first connecting pipe 55 extends to the outside of the surface of the tank 51, a third connecting pipe 57 is fixedly connected to the surface of the tank 51, one end of the third connecting pipe 57 is located in the middle of the inner cavity of the tank 51, a motor 59 is fixedly installed in the inner cavity of the lower surface of the tank 51, a filter screen 58 is fixedly sleeved on the upper surface of the third connecting pipe 57, a bearing 510 is fixedly sleeved on the lower surface of the third connecting pipe 57, a sleeve plate 511 is fixedly sleeved on the surface of the bearing 510, an air pipe 512 is symmetrically and fixedly connected to the surface of the sleeve plate 511, a hollow annular plate 514 is fixedly connected to one end of the air pipe 512, an air nozzle 513 is symmetrically and threadedly sleeved on the top of the air pipe 512, an air pump 52 is fixedly installed on the surface of the tank 51 through an installation plate, the bottom of the sleeve plate 511 and the output end of the motor 59 are both fixedly sleeved with a gear 515, the surface of the hollow ring plate 514 is slidably sleeved with a sliding ring plate 516, the port of the air nozzle 513 is symmetrically and fixedly connected with a plastic triangular plate 517, a telescopic mechanism 518 is arranged between the surface of the plastic triangular plate 517 and the port of the air nozzle 513, the output end of the air pump 52 penetrates through the surface of the tank body 51 through an air pipe, and fixedly communicated on the surface of a sliding ring plate 516, the lower surface of the tank body 51 is movably connected with an outer sealing door 54 through a hinge, the tank body 51 is fixedly connected on the top of the base 1, one end of a third connecting pipe 57 is fixedly communicated on a connecting port of the blower 4, the surface of a filter screen plate 58 is mutually connected with the inner wall of the tank body 51, the surface of a hollow ring plate 514 and the inner wall of the tank body 51 slide mutually, the surface of a gear 515 is mutually engaged and connected, and one end of a second connecting pipe 56 and one end of a first connecting pipe 55 are fixedly communicated on the surface of the pipeline 6.

Referring to fig. 6, the telescopic mechanism 518 includes a sleeve 5181, a sliding rod 5182 is slidably sleeved in an inner cavity of the sleeve 5181, a spring 5183 is fixedly connected between one end of the sliding rod 5182 and the inner cavity of the sleeve 5181, one end of the sliding rod 5182 is fixedly connected to the surface of the plastic triangular plate 517, and one end of the spring 5183 is fixedly connected to a port of the showerhead 513.

The embodiment of the invention provides a technical scheme that: a use method of an MVR wastewater treatment device specifically comprises the following steps:

s1, high-concentration high-salinity wastewater enters through the liquid inlet 8, then the wastewater flows into the heat exchange tubes in the inner cavity of the heater 7, liquid films are formed on the inner walls of a plurality of heat exchange tubes of the heater 7, then the compressor 3 and the blower 4 on the top of the mounting seat 2 are started, the hot gas generated by the compressor 3 is sent to the inner cavity of the conveying pipe 9 by the blower 4, then the hot gas heats the pipeline in the heater 7, so that the high-salinity wastewater in the inner cavity of the pipeline of the heater 7 is heated, boiled and evaporated, the boiled waste water then falls to the bottom of the inner cavity of the pipeline 6 to form concentrated solution and secondary steam, the steam enters the inner cavity of the tank body 51 through the second connecting pipe 56 for separation, and liquid droplets carried by the secondary steam are separated through the absorption of the blower 4, the separated droplets and gas are then introduced into the blower 4 again through the third connection pipe 57;

s2, performing secondary liquid separation again through the filter screen plate 58 to filter and separate a small part of spray adhered to the liquid again, because the spray has a density greater than that of the liquid, the residual liquid remains on the filter screen plate 58, the liquid separated for the second time falls on the bottom of the inner cavity of the tank body 51 and returns to the bottom of the inner cavity of the pipeline 6 again through the first connecting pipe 55, then starting the air pump 52 and the motor 59, firstly, the air generated by the air pump 52 is conveyed into the inner cavity of the hollow ring plate 514 through the sliding ring plate 516, then enters the inner cavity of the sleeve plate 511, finally, the air is sprayed upwards through the air spraying head 513, and meanwhile, the output end of the motor 59 drives the gear 515 to mesh and rotate to drive the sleeve plate 511 to rotate on the bearing 510, so that the air spraying head 513 rotates to spray air to blow up the spray residual spray the spray on the surface of the filter screen plate 58, the spray separated for the second time is sucked by the blower 4 while being blown;

s3, in addition, when the air jet head 513 jets air, the impact force of the air can drive the plastic triangular plate 517 to expand outwards and drive the sliding rod 5182 to retract in the inner cavity of the sleeve 5181, so that the port of the air jet head 513 is opened, thereby realizing the phenomenon of air jet, and in addition, when the air jet head does not jet air, the elastic force of the spring 5183 can reset the sliding rod 5182 and drive the plastic triangular plates 517 to be mutually attached, thereby realizing the sealing state, and preventing the separated concentrated solution from entering the inner cavity of the air jet head 513;

s4, compressing and heating the gas sucked by the blower 4 by the compressor 3, recycling the gas again, adjusting the size of the gas by the adjusting valve 10, and finally crystallizing the concentrated solution at the bottom of the inner cavity of the pipeline 6 to finish the treatment of the high-salt water wastewater.

And those not described in detail in this specification are well within the skill of those in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a MVR effluent treatment plant, includes base (1), the top of base (1) is fixedly connected with mount pad (2) and pipeline (6) respectively, the centre of pipeline (6) is provided with heater (7), top fixedly connected with compressor (3) of mount pad (2), the output of compressor (3) is provided with air-blower (4), fixed intercommunication has conveyer pipe (9), its characterized in that between air-blower (4) and heater (7): a liquid separator (5) is fixedly connected at the corner of the top of the base (1);

the liquid separator (5) comprises a tank body (51), a second connecting pipe (56) is fixedly communicated with the upper surface of the tank body (51), a first connecting pipe (55) is fixedly communicated with an inner cavity of the lower surface of the tank body (51), one end of the first connecting pipe (55) extends out of the surface of the tank body (51), a third connecting pipe (57) is sleeved on the surface of the tank body (51), one end of the third connecting pipe (57) is located in the middle of the inner cavity of the tank body (51), a motor (59) is fixedly installed in the inner cavity of the lower surface of the tank body (51), a filter screen plate (58) is sleeved on the upper surface of the third connecting pipe (57), a bearing (510) is sleeved on the lower surface of the third connecting pipe (57), a sleeve plate (511) is sleeved on the surface of the bearing (510), and air pipes (512) are symmetrically and fixedly connected on the surface of the sleeve plate (511), one end of the air pipe (512) is fixedly communicated with a hollow annular plate (514), the top of the air pipe (512) is symmetrically sleeved with an air nozzle (513) in a threaded manner, the surface of the tank body (51) is fixedly provided with an air pump (52) through a mounting plate, the bottom of the sleeve plate (511) and the output end of the motor (59) are fixedly sleeved with a gear (515), and the surface of the hollow annular plate (514) is slidably sleeved with a sliding annular plate (516);

the port symmetry fixedly connected with plastics triangle piece (517) of jet head (513), be provided with telescopic machanism (518) between the surface of plastics triangle piece (517) and the port of jet head (513), and telescopic machanism (518) include sleeve pipe (5181), slide bar (5182) has been cup jointed in the inner chamber slip of sleeve pipe (5181), fixedly connected with spring (5183) between the one end of slide bar (5182) and the inner chamber of sleeve pipe (5181).

2. The MVR wastewater treatment plant of claim 1, wherein: the output end of the air pump (52) penetrates through the surface of the tank body (51) through an air pipe and is fixedly communicated with the surface of the sliding ring plate (516).

3. The MVR wastewater treatment plant of claim 1, wherein: the lower surface of the tank body (51) is movably connected with an outer sealing door (54) through a hinge, the tank body (51) is fixedly connected to the top of the base (1), and one end of the third connecting pipe (57) is fixedly communicated with a connecting port of the air blower (4).

4. The MVR wastewater treatment plant of claim 1, wherein: the surface of the filter screen plate (58) is connected with the inner wall of the tank body (51), and the surface of the hollow annular plate (514) slides with the inner wall of the tank body (51).

5. The MVR wastewater treatment plant according to claim 1, wherein: the surfaces of the gears (515) are meshed with each other, and the second connecting pipe (56) and one end of the first connecting pipe (55) are fixedly communicated on the surface of the pipeline (6).

6. The MVR wastewater treatment plant of claim 1, wherein: the surface of conveyer pipe (9) is provided with governing valve (10), the fixed intercommunication of top of pipeline (6) has inlet (8).

7. The MVR wastewater treatment plant of claim 1, wherein: one end of the sliding rod (5182) is fixedly connected to the surface of the plastic triangular plate (517), and one end of the spring (5183) is fixedly connected to the port of the air nozzle (513).

8. A method for implementing the MVR wastewater treatment plant of any of claims 1 to 7, characterized in that: the method specifically comprises the following steps:

s1, firstly, high-concentration high-salt wastewater enters through a liquid inlet (8), then the wastewater flows into heat exchange tubes in inner cavities of a heater (7), liquid films are formed on the inner walls of a plurality of heat exchange tubes of the heater (7), then a compressor (3) and a blower (4) on the top of an installation seat (2) are started, hot gas generated by the compressor (3) is sent into the inner cavity of a conveying pipe (9) by the blower (4), then the hot gas heats the tubes in the heater (7), so that the high-salt wastewater in the tube inner cavities of the heater (7) is heated, boiled and evaporated, then the boiled wastewater falls on the bottommost part of the inner cavities of a tube (6) to form concentrated liquid and secondary steam, the steam of the concentrated liquid and the secondary steam enters into the inner cavity of a tank body (51) through a second connecting pipe (56) to be separated, and liquid droplets carried by the secondary steam are separated through absorption of the blower (4), the separated droplets and gas are then introduced into the blower (4) again through the third connection pipe (57);

s2, the residual liquid is separated again through the filter screen plate (58) to filter and separate the little part of the spray stuck on the liquid again, because the spray density is larger than the liquid, the spray remains on the filter screen plate (58), the liquid separated again falls on the bottom of the inner cavity of the tank body (51) and returns to the bottom of the inner cavity of the pipeline (6) again through the first connecting pipe (55), then the air pump (52) and the motor (59) are started, firstly the air generated by the air pump (52) is conveyed to the inner cavity of the hollow ring plate (514) through the sliding ring plate (516), then enters the inner cavity of the sleeve plate (511), finally the air is sprayed upwards through the air spraying head (513), and simultaneously the output end of the motor (59) drives the gear (515) to engage and rotate to drive the sleeve plate (511) to rotate on the bearing (510), the rotary air injection of the air injection head (513) is realized to blow up the residual droplets on the surface of the filter screen plate (58), so that the droplets separated twice can be sucked by the blower (4) while being blown up;

s3, in addition, when the air jet head (513) jets air, the impact force of the air can drive the plastic triangular plate (517) to expand outwards and drive the sliding rod (5182) to retract in the inner cavity of the sleeve (5181), so that the port of the air jet head (513) is opened, and the air jet phenomenon is realized, in addition, when the air jet head does not jet air, the sliding rod (5182) can reset through the elasticity of the spring (5183), and the plastic triangular plates (517) are driven to be mutually attached, so that the sealing state is realized, and the separated concentrated liquid can not enter the inner cavity of the air jet head (513);

s4, compressing and heating the gas sucked by the blower (4) through the compressor (3) and then recycling the gas again, adjusting the size of the gas through the adjusting valve (10), and finally crystallizing the concentrated solution at the bottom of the inner cavity of the pipeline (6) to finish the treatment of the high-salt water wastewater.