CN212174737U - Integrated treatment system for zero discharge of domestic garbage sewage - Google Patents
Integrated treatment system for zero discharge of domestic garbage sewage Download PDFInfo
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- CN212174737U CN212174737U CN202020610983.1U CN202020610983U CN212174737U CN 212174737 U CN212174737 U CN 212174737U CN 202020610983 U CN202020610983 U CN 202020610983U CN 212174737 U CN212174737 U CN 212174737U
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Abstract
The utility model discloses a domestic waste sewage zero release integrated processing system, including the microfiltration system, the anaerobism pond, the oxygen deficiency pond, good oxygen pond, the MBR pond, reverse osmosis system, the MVR system, sewage flows in the microfiltration system and carries out filtration treatment, the play water of microfiltration system flows in the anaerobism pond and carries out purification treatment, the play water of anaerobism pond flows in the oxygen deficiency pond and carries out purification treatment, the play water of oxygen deficiency pond flows in good oxygen pond and carries out purification treatment, the play water of good oxygen pond flows in the MBR pond and carries out purification treatment, the play water in the MBR pond flows in reverse osmosis system and carries out purification treatment, reverse osmosis system's product water recycling, reverse osmosis system's concentrate flows in the MVR system and carries out. This integrated processing system of domestic waste sewage zero release can carry out advanced treatment to domestic waste sewage, effectively solves difficulties such as noxious material, salinity in the sewage, can realize the zero release of domestic waste sewage, and the sewage after realizing handling can be reused in processes such as domestic waste washing, reduces the pollution risk to the environment.
Description
Technical Field
The utility model relates to a waste water treatment technical field, more specifically relate to a domestic waste sewage zero release integrated processing system.
Background
The domestic waste sewage has the characteristics of high pollutant concentration, high SS, high COD, high ammonia nitrogen, high phosphorus, high salinity, high grease content, high variety of heavy metal content, high chromaticity, imbalance of nutrition proportion, acidity and the like. The water for cleaning the garbage can also use the water to circularly clean the dirt on the surface of the garbage, and the obtained garbage cleaning circulating sewage can also cause the characteristics. Because the sewage contains a large amount of toxic substances and has high concentration, if the sewage is not effectively treated, the sewage can cause serious environmental pollution to surrounding underground water and surface water, and brings great harm to human beings and the environment. The traditional domestic garbage sewage treatment process is that sewage enters a mixing tank, the sewage in the mixing tank automatically flows into a coagulating sedimentation tank for reaction to carry out mud-water separation, and insoluble suspended substances in the sewage are separated. Supernatant in the sedimentation tank automatically flows to an anaerobic tank, non-dissolved organic matters in the wastewater are intercepted and gradually converted into dissolved organic matters in the anaerobic tank, and some substances which are difficult to biodegrade are converted into small molecular substances which are easy to degrade, such as organic acid and the like, so that the biodegradability and the degradation speed of the wastewater are greatly improved. And (3) allowing the effluent of the anaerobic tank to enter an anoxic tank, further degrading organic matters through facultative microorganisms, and removing total nitrogen in the wastewater through denitrification to reduce ammonia nitrogen and total nitrogen in the wastewater. The effluent of the anoxic tank enters an aerobic tank, and organic matters are further decomposed into carbon dioxide and water in the aerobic tank, so that the purpose of removing pollutants is achieved. And the effluent of the aerobic tank enters an MBR tank for advanced treatment, and COD, ammonia nitrogen and organic matters in the wastewater are further removed. And the produced water in the MBR tank enters the water producing tank, and the sewage in the water producing tank is discharged through the drainage channel after reaching the standard. Due to the characteristic of various toxic substances, the sewage treatment process cannot effectively remove the toxic substances, cannot realize zero discharge of sewage, has great influence on ecological water environment and has the risk of environmental pollution.
Therefore, there is a need to provide a domestic waste sewage zero discharge integrated treatment system to solve the above-mentioned deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a domestic waste sewage zero release integrated processing system can carry out advanced treatment to domestic waste sewage, effectively solves difficulties such as noxious material, salinity in the sewage, can realize the zero release of domestic waste sewage, realizes that the sewage after handling can be reused in processes such as domestic waste washing, reduces the pollution risk to the environment.
In order to realize the above purpose, the utility model discloses a domestic waste sewage zero release integrated processing system, include: microfiltration system, anaerobism pond, oxygen deficiency pond, good oxygen pond, MBR pond, reverse osmosis system, MVR system, sewage inflow the microfiltration system carries out filtration treatment, the play water inflow of microfiltration system the anaerobism pond carries out purification treatment, the play water inflow in anaerobism pond the oxygen deficiency pond carries out purification treatment, the play water inflow in oxygen deficiency pond good oxygen pond carries out purification treatment, the play water inflow in good oxygen pond the MBR pond carries out purification treatment, the play water inflow in MBR pond reverse osmosis system carries out purification treatment, reverse osmosis system's product water retrieval and utilization, reverse osmosis system's concentrate flows in the MVR system carries out purification treatment.
Compared with the prior art, the integrated processing system of domestic waste sewage zero release of this application is according to the rivers direction, including micro-filtration system, anaerobism pond, oxygen deficiency pond, good oxygen pond, MBR pond, reverse osmosis system, MVR system. The micro suspended substances in the sewage are filtered by the microfiltration system, the organic substances in the sewage are degraded by anaerobic microorganisms in the anaerobic tank, the nitrogen is removed by the anoxic tank, the organic substances in the sewage are removed by the aerobic tank, the organic pollutants in the water are decomposed by the MBR tank to purify the sewage, most of soluble salts in the water are removed by a reverse osmosis membrane of the reverse osmosis system, colloid, the organic substances, microorganisms and the like, the concentrated solution treated by the reverse osmosis system is evaporated and crystallized by the MVR system, the condensed water can be recycled, the crystals are subjected to landfill treatment, and zero discharge after sewage treatment is realized.
Preferably, the integrated treatment system for zero discharge of domestic waste and sewage further comprises an intermediate water tank positioned between the MBR tank and the reverse osmosis system, the effluent of the MBR tank flows into the intermediate water tank, and the effluent of the intermediate water tank flows into the reverse osmosis system.
Preferably, the reverse osmosis system comprises a first-stage reverse osmosis system and a second-stage reverse osmosis system, the effluent of the middle water tank flows into the first-stage reverse osmosis system, the produced water of the first-stage reverse osmosis system is recycled, the concentrate of the first-stage reverse osmosis system flows into the second-stage reverse osmosis system for purification treatment, the produced water of the second-stage reverse osmosis system flows back to the middle water tank, and the concentrate of the second-stage reverse osmosis system flows into the MVR system.
Preferably, a first precision filter and a first high-pressure pump are arranged between the intermediate water tank and the first-stage reverse osmosis system, and the outlet water of the intermediate water tank flows into the first-stage reverse osmosis system after sequentially passing through the first precision filter and the first high-pressure pump.
Preferably, a produced water recycling tank and a first concentrate tank are arranged between the first-stage reverse osmosis system and the second-stage reverse osmosis system, produced water of the first-stage reverse osmosis system flows into the produced water recycling tank, concentrate of the first-stage reverse osmosis system flows into the first concentrate tank, and effluent of the first concentrate tank flows into the second-stage reverse osmosis system.
Preferably, a second precision filter and a second high-pressure pump are arranged between the first concentrated solution tank and the second-stage reverse osmosis system, and the effluent of the first concentrated solution tank sequentially passes through the second precision filter and the second high-pressure pump and then flows into the second-stage reverse osmosis system.
Preferably, a second concentrate tank is arranged between the second-stage reverse osmosis system and the MVR system, the concentrate of the second-stage reverse osmosis system flows into the second concentrate tank, and the effluent of the second concentrate tank flows into the MVR system.
Preferably, a mixing tank is arranged between the microfiltration system and the anaerobic tank, effluent of the microfiltration system flows into the mixing tank, and effluent of the mixing tank flows into the anaerobic tank.
Preferably, the microfiltration system includes first microfiltration system and second microfiltration system, the direction of intaking of first microfiltration system is equipped with first equalizing basin, the direction of intaking of second microfiltration system is equipped with the second equalizing basin, and rubbish washs circulation sewage and passes through in proper order first equalizing basin with flow in behind the first microfiltration system the mixed pond, domestic waste sewage passes through in proper order the second equalizing basin with flow in behind the second microfiltration system the mixed pond.
Preferably, the mixing tank is provided with a first aeration device.
Drawings
FIG. 1 is a schematic structural view of the integrated treatment system for zero discharge of domestic waste and sewage.
Description of the symbols:
the integrated treatment system 100 for zero discharge of domestic waste sewage comprises a first adjusting tank 11, a second aeration device 111, a second adjusting tank 13, a third aeration device 131, a microfiltration system 20, a first microfiltration system 21, a second microfiltration system 23, a mixing tank 25, a first aeration device 251, an anaerobic tank 30, an anoxic tank 40, an aerobic tank 50, an MBR tank 60, a reverse osmosis system 70, a primary reverse osmosis system 71, a first precision filter 711, a first high-pressure pump 713, a secondary reverse osmosis system 73, a second precision filter 731, a second high-pressure pump 733, an MVR system 80, an intermediate water tank 91, a produced water recycling tank 93, a first concentrated liquid tank 95 and a second concentrated liquid tank 97.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.
Referring to fig. 1, the integrated domestic waste sewage zero-discharge treatment system 100 of the present application includes: a microfiltration system 20, an anaerobic tank 30, an anoxic tank 40, an aerobic tank 50, an MBR tank 60, a reverse osmosis system 70, and an MVR system 80. Sewage flows into microfiltration system 20 and carries out filtration treatment, the play water of microfiltration system 20 flows into anaerobism pond 30 and carries out purification treatment, the play water of anaerobism pond 30 flows into oxygen deficiency pond 40 and carries out purification treatment, the play water of oxygen deficiency pond 40 flows into good oxygen pond 50 and carries out purification treatment, the play water of good oxygen pond 50 flows into MBR pond 60 and carries out purification treatment, the play water of MBR pond 60 flows into reverse osmosis system 70 and carries out purification treatment, reverse osmosis system 70's product water recycling, reverse osmosis system 70's concentrate flows into MVR system 80 and carries out purification treatment. The MVR system 80 adopts a vapor mechanical recompression technology to evaporate and crystallize the concentrated solution after the advanced treatment of the reverse osmosis system 70, so that the difficulties of toxic substances, salinity and the like in sewage can be effectively solved, the zero discharge of sewage of a sewage station can be realized, and the pollution risk to the environment is reduced.
Referring to fig. 1, the integrated system 100 for zero discharge of domestic waste and sewage further includes an intermediate water tank 91 disposed between the MBR tank 60 and the reverse osmosis system 70, wherein the effluent of the MBR tank 60 flows into the intermediate water tank 91, and the effluent of the intermediate water tank 91 flows into the reverse osmosis system 70. Further, the reverse osmosis system 70 comprises a first-stage reverse osmosis system 71 and a second-stage reverse osmosis system 73, the effluent of the middle water tank 91 flows into the first-stage reverse osmosis system 71, the produced water of the first-stage reverse osmosis system 71 is recycled, the concentrate of the first-stage reverse osmosis system 71 flows into the second-stage reverse osmosis system 73 for purification treatment, the produced water of the second-stage reverse osmosis system 73 flows back to the middle water tank 91, and the concentrate of the second-stage reverse osmosis system 73 flows into the MVR system 80. The first-stage reverse osmosis system 71 and the second-stage reverse osmosis system 73 are used for treating sewage, and the purified water quality is improved.
Referring to fig. 1, a first precision filter 711 and a first high-pressure pump 713 are disposed between the intermediate water tank 91 and the primary reverse osmosis system 71, and the outlet water of the intermediate water tank 91 sequentially passes through the first precision filter 711 and the first high-pressure pump 713 and then flows into the primary reverse osmosis system 71. The first precision filter 711 can be used for filtering sewage, so that the service life of the first-stage reverse osmosis system 71 is prolonged; the first high-pressure pump 713 can be used for quickly and effectively conveying the sewage to the first-stage reverse osmosis system 71, so that the treatment efficiency is improved. A produced water recycling tank 93 and a first concentrated solution tank 95 are arranged between the first-stage reverse osmosis system 71 and the second-stage reverse osmosis system 73, the produced water of the first-stage reverse osmosis system 71 flows into the produced water recycling tank 93, the concentrated solution of the first-stage reverse osmosis system 71 flows into the first concentrated solution tank 95, and the effluent of the first concentrated solution tank 95 flows into the second-stage reverse osmosis system 73. The produced water recycling tank 93 is used for storing the produced water of the first-stage reverse osmosis system 71 so as to be recycled for other production processes. Further, a second precision filter 731 and a second high-pressure pump 733 are arranged between the first concentrate tank 95 and the second-stage reverse osmosis system 73, and the outlet water of the first concentrate tank 95 sequentially passes through the second precision filter 731 and the second high-pressure pump 733 and then flows into the second-stage reverse osmosis system 73. The second fine filter 731 can be used for filtering sewage, so that the service life of the secondary reverse osmosis system 73 is prolonged; the second high-pressure pump 733 can be used to rapidly and effectively convey the sewage to the secondary reverse osmosis system 73, thereby improving the treatment efficiency. A second concentrate tank 97 is arranged between the second-stage reverse osmosis system 73 and the MVR system 80, the concentrate of the second-stage reverse osmosis system 73 flows into the second concentrate tank 97, and the effluent of the second concentrate tank 97 flows into the MVR system 80.
Referring to fig. 1, in the present embodiment, the microfiltration system 20 is a fiber plate frame microfiltration machine with a filtration precision of 5-10 μm. The microfiltration system 20 can be used for filtering micro suspended matters in sewage, mainly phytoplankton, zooplankton, organic matter residues and the like, and realizes water purification. A mixing tank 25 is arranged between the microfiltration system 20 and the anaerobic tank 30, the effluent of the microfiltration system 20 flows into the mixing tank 25, and the effluent of the mixing tank 25 flows into the anaerobic tank 30. Further, can set up first aeration equipment 251 in the mixing tank 25, because the sewage in the mixing tank 25 comes from rubbish washing circulation sewage and domestic waste sewage, quality of water is uneven, starts first aeration equipment 251 and makes the sewage misce bene in the mixing tank 25 to the stability of stable mixing tank 25 play water quality guarantees that follow-up technology purifies water quality stable. Furthermore, the garbage station can adopt water to clean the sewage on the surface of the garbage to obtain garbage cleaning circulating sewage, and in order to better purify the sewage, the microfiltration system 20 comprises a first microfiltration system 21 and a second microfiltration system 23, a first regulating tank 11 is arranged in the water inlet direction of the first microfiltration system 21, a second regulating tank 13 is arranged in the water inlet direction of the second microfiltration system 23, the garbage cleaning circulating sewage sequentially passes through the first regulating tank 11 and the first microfiltration system 21 and then flows into a mixing tank 25, a second aeration device 111 is arranged in the first regulating tank 11, the second aeration device 111 provides aeration to uniformly mix the garbage cleaning circulating sewage flowing into the first regulating tank 11, the water quality of the effluent is ensured to be stable, and the service life of the first microfiltration system 21 is prolonged; domestic waste sewage flows into the mixing tank 25 after passing through the second equalizing basin 13 and the second microfiltration system 23 in proper order, is equipped with the third aeration equipment 131 in the second equalizing basin 13, and the third aeration equipment 131 provides the aeration and carries out the misce bene to the domestic waste sewage that flows into in the second equalizing basin 13, guarantees the water stabilization of play water, prolongs the life of second microfiltration system 23.
The working principle of the domestic waste sewage zero-discharge integrated treatment system 100 is explained by combining the figure 1:
the garbage cleaning circulating sewage enters the first adjusting tank 11, and the garbage cleaning circulating sewage flowing into the first adjusting tank 11 is uniformly mixed by providing aeration through the second aeration device 111, so that the water quality of the effluent is stable; the effluent of the first adjusting tank 11 flows into a first microfiltration system 21 to filter and remove micro suspended matters in the sewage. The domestic waste sewage enters the second adjusting tank 13, and the domestic waste sewage flowing into the second adjusting tank 13 is uniformly mixed by providing aeration through the third aeration device 131, so that the quality of the effluent is ensured to be stable; the effluent of the second conditioning tank 13 flows into a second microfiltration system 23. The effluent of the first microfiltration system 21 and the effluent of the second microfiltration system 23 both flow into the mixing tank 25, and the first aeration device 251 in the mixing tank 25 performs aeration so as to uniformly mix the sewage in the mixing tank 25, thereby ensuring the stable quality of the effluent.
The effluent of the mixing tank 25 flows into an anaerobic tank 30, and organic matters in the sewage are degraded by anaerobic microorganisms in the anaerobic tank 30 to purify the water; the effluent in the anaerobic tank 30 flows into the anoxic tank 40, and in the anoxic section, the aim of denitrification is fulfilled by virtue of biological denitrification. In order to enhance the effect of anaerobic hydrolytic acidification, the sludge in the anoxic tank 40 is partially returned to the anaerobic tank 30. The anoxic tank 40 adopts low-intensity aeration to ensure that the concentration of dissolved oxygen in water is below 0.5mg/L so as to ensure the smooth proceeding of denitrification reaction. The effluent of the anoxic tank 40 flows into the aerobic tank 50, and the organic matters in the sewage are reduced by using the microorganisms in the aerobic tank 50 to purify the water; the effluent of the aerobic tank 50 flows into an MBR tank 60, and the activated sludge containing microbial flora in the MBR tank 60 adsorbs organic pollutants in the water body, so that the organic pollutants in the water body are decomposed to purify the water quality, a secondary sedimentation tank is not needed, the equipment is simple, the occupied space of the structure is small, the sludge yield is low, and the effluent quality is stable; the effluent from the MBR tank 60 flows into an intermediate water tank 91.
The effluent from the middle water tank 91 flows into the first fine filter 711 for filtration, and then is delivered to the first-stage reverse osmosis system 71 through the first high-pressure pump 713, and most of the soluble salts, colloids, organic matters, microorganisms and the like in the water are removed by using the reverse osmosis membrane of the first-stage reverse osmosis system 71, so as to purify the water. Wherein, the produced water of the first-stage reverse osmosis system 71 flows into a produced water recycling tank 93 for recycling in other procedures; the concentrated solution of the first-stage reverse osmosis system 71 flows into the first concentrated solution tank 95, the effluent of the first concentrated solution tank 95 flows into the second fine filter 731 for filtration treatment, and then is delivered to the second-stage reverse osmosis system 73 through the second high-pressure pump 733, and the reverse osmosis membranes of the second-stage reverse osmosis system 73 are used for purifying the water quality. Wherein, the produced water of the secondary reverse osmosis system 73 can be recovered to the intermediate water tank 91, the concentrated solution of the secondary reverse osmosis system 73 flows into the second concentrated solution tank 97, and the effluent of the second concentrated solution tank 97 flows into the MVR system 80. It should be noted that the water inlet, water production and concentrate lines of the first reverse osmosis system 71 and the second reverse osmosis system 73 are provided with a series of control valves, monitoring instruments and program control operation systems, which will ensure the systematic operation of the equipment with long-term quality and quantity guarantee, and will not be described herein. The concentrate is subjected to evaporation and crystallization by the MVR system 80. The condensed water obtained by condensation can be recycled, and the crystals are subjected to landfill treatment, so that zero emission after sewage treatment is realized.
Compared with the prior art, the integrated processing system 100 for zero discharge of domestic waste sewage of the application comprises a microfiltration system 20, an anaerobic tank 30, an anoxic tank 40, an aerobic tank 50, an MBR tank 60, a reverse osmosis system 70 and an MVR system 80 according to the water flow direction. The micro-filtration system 20 is used for filtering micro suspended substances in the sewage, the anaerobic microorganisms in the anaerobic tank 30 are used for degrading organic substances in the sewage, the anoxic tank 40 is used for removing nitrogen, the aerobic tank 50 is used for removing organic substances in the sewage, the MBR tank 60 is used for decomposing organic pollutants in a water body to purify the sewage, the reverse osmosis membrane of the reverse osmosis system 70 is used for removing most of soluble salt, colloid, organic substances, microorganisms and the like in the water, the MVR system 80 is used for evaporating and crystallizing concentrated solution treated by the reverse osmosis system 70, condensed water can be recycled, crystals are subjected to landfill treatment, and zero emission after sewage treatment is realized.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.
Claims (10)
1. The utility model provides a domestic waste sewage zero release integrated processing system which characterized in that includes: microfiltration system, anaerobism pond, oxygen deficiency pond, good oxygen pond, MBR pond, reverse osmosis system, MVR system, sewage inflow the microfiltration system carries out filtration treatment, the play water inflow of microfiltration system the anaerobism pond carries out purification treatment, the play water inflow in anaerobism pond the oxygen deficiency pond carries out purification treatment, the play water inflow in oxygen deficiency pond good oxygen pond carries out purification treatment, the play water inflow in good oxygen pond the MBR pond carries out purification treatment, the play water inflow in MBR pond reverse osmosis system carries out purification treatment, reverse osmosis system's product water retrieval and utilization, reverse osmosis system's concentrate flows in the MVR system carries out purification treatment.
2. The integrated sewage zero discharge treatment system for domestic waste of claim 1, further comprising an intermediate water tank between the MBR tank and the reverse osmosis system, wherein the effluent of the MBR tank flows into the intermediate water tank, and the effluent of the intermediate water tank flows into the reverse osmosis system.
3. The integrated treatment system for zero discharge of domestic waste sewage of claim 2, wherein the reverse osmosis system comprises a primary reverse osmosis system and a secondary reverse osmosis system, the effluent of the intermediate water tank flows into the primary reverse osmosis system, the produced water of the primary reverse osmosis system is recycled, the concentrate of the primary reverse osmosis system flows into the secondary reverse osmosis system for purification treatment, the produced water of the secondary reverse osmosis system flows back to the intermediate water tank, and the concentrate of the secondary reverse osmosis system flows into the MVR system.
4. The integrated treatment system for zero discharge of domestic waste sewage of claim 3, wherein a first precision filter and a first high pressure pump are arranged between the intermediate water tank and the primary reverse osmosis system, and the effluent of the intermediate water tank flows into the primary reverse osmosis system after passing through the first precision filter and the first high pressure pump in sequence.
5. The integrated treatment system for zero discharge of domestic waste sewage of claim 4, wherein a produced water recycling tank and a first concentrate tank are arranged between the primary reverse osmosis system and the secondary reverse osmosis system, the produced water of the primary reverse osmosis system flows into the produced water recycling tank, the concentrate of the primary reverse osmosis system flows into the first concentrate tank, and the effluent of the first concentrate tank flows into the secondary reverse osmosis system.
6. The integrated treatment system for zero discharge of domestic waste sewage of claim 5, wherein a second precision filter and a second high pressure pump are arranged between the first concentrated solution tank and the secondary reverse osmosis system, and the effluent of the first concentrated solution tank flows into the secondary reverse osmosis system after passing through the second precision filter and the second high pressure pump in sequence.
7. The integrated treatment system for zero discharge of domestic waste sewage of claim 6, wherein a second concentrate tank is arranged between the secondary reverse osmosis system and the MVR system, the concentrate of the secondary reverse osmosis system flows into the second concentrate tank, and the effluent of the second concentrate tank flows into the MVR system.
8. The integrated sewage zero-discharge treatment system for domestic garbage according to claim 1, wherein a mixing tank is arranged between the micro-filtration system and the anaerobic tank, the effluent of the micro-filtration system flows into the mixing tank, and the effluent of the mixing tank flows into the anaerobic tank.
9. The integrated treatment system for zero discharge of domestic waste sewage according to claim 8, wherein the micro-filtration system comprises a first micro-filtration system and a second micro-filtration system, a first adjusting tank is arranged in the water inlet direction of the first micro-filtration system, a second adjusting tank is arranged in the water inlet direction of the second micro-filtration system, the sewage from the garbage cleaning cycle sequentially passes through the first adjusting tank and the first micro-filtration system and then flows into the mixing tank, and the sewage from the domestic waste sequentially passes through the second adjusting tank and the second micro-filtration system and then flows into the mixing tank.
10. The integrated sewage zero-discharge treatment system for domestic garbage according to claim 8, wherein said mixing tank is provided with a first aeration device.
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| CN114133095A (en) * | 2021-08-24 | 2022-03-04 | 天津津港基础设施养护运营工程管理有限公司 | Biological enhanced treatment device and process for high-salinity oily wastewater |
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| CN114133095A (en) * | 2021-08-24 | 2022-03-04 | 天津津港基础设施养护运营工程管理有限公司 | Biological enhanced treatment device and process for high-salinity oily wastewater |
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