CN112591985A - High-salinity sewage treatment process - Google Patents
High-salinity sewage treatment process Download PDFInfo
- Publication number
- CN112591985A CN112591985A CN202011328715.1A CN202011328715A CN112591985A CN 112591985 A CN112591985 A CN 112591985A CN 202011328715 A CN202011328715 A CN 202011328715A CN 112591985 A CN112591985 A CN 112591985A
- Authority
- CN
- China
- Prior art keywords
- water
- tank
- biochemical
- sodium hypochlorite
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 102
- 239000012267 brine Substances 0.000 claims abstract description 35
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 35
- 239000005708 Sodium hypochlorite Substances 0.000 claims abstract description 28
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000004062 sedimentation Methods 0.000 claims abstract description 21
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 19
- 239000010802 sludge Substances 0.000 claims abstract description 17
- 238000010612 desalination reaction Methods 0.000 claims abstract description 16
- 239000012528 membrane Substances 0.000 claims abstract description 16
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000005086 pumping Methods 0.000 claims abstract description 7
- 238000010992 reflux Methods 0.000 claims abstract description 7
- 239000008399 tap water Substances 0.000 claims abstract description 7
- 235000020679 tap water Nutrition 0.000 claims abstract description 7
- 239000002920 hazardous waste Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 3
- 238000004659 sterilization and disinfection Methods 0.000 claims description 13
- 239000000645 desinfectant Substances 0.000 claims description 12
- 238000001704 evaporation Methods 0.000 claims description 7
- 230000008020 evaporation Effects 0.000 claims description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 238000005868 electrolysis reaction Methods 0.000 claims description 5
- 238000005374 membrane filtration Methods 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 239000002910 solid waste Substances 0.000 claims description 3
- 230000001954 sterilising effect Effects 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000003139 buffering effect Effects 0.000 abstract description 2
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 235000013311 vegetables Nutrition 0.000 description 10
- 239000002351 wastewater Substances 0.000 description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 244000005700 microbiome Species 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/043—Treatment of partial or bypass streams
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
The invention discloses a high-salinity sewage treatment process, which comprises the steps of firstly collecting high-salinity sewage of each shift generated in a workshop to a water collecting tank and buffering to balance water quality; then carrying out biochemical treatment in a biochemical system; introducing the biochemical sewage into a sedimentation tank for sedimentation treatment, pumping the precipitated sludge into a filter press by a sludge reflux pump for filter pressing, recovering clear water after filter pressing to a water collecting tank for cyclic treatment again, introducing the precipitated sewage into an MBR membrane tank for filtration, producing desalted water and strong brine after reverse osmosis desalination, cooling the desalted water and the strong brine produced after reverse osmosis desalination by adopting an energy-saving water heating pump, and recovering heat for application to a biochemical system; the cooled desalted water is disinfected by electrolytic sodium hypochlorite and can be completely reused as tap water or directly discharged. The invention does not produce hazardous waste, has zero emission and no pollution, recycles the strong brine and the desalted water, reduces the temperature and recycles the strong brine and the desalted water through the heat pump, and finally introduces a good water system to be recycled by one hundred percent.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a high-salinity sewage treatment process.
Background
The demand of pickled vegetables in the market is large, a plurality of pickled vegetable factories are built in China, a large amount of high-salt wastewater is generated during pickled vegetable processing, and the pickled vegetable wastewater has the characteristics of high salt, high COD (chemical oxygen demand) and high ammonia nitrogen. The method is divided into two types according to the salinity; the high-salinity wastewater and the extra-high salinity wastewater have the influent salinity of less than 3 ten thousand ppm and the influent salinity of more than 3 ten thousand ppm. The traditional biochemical treatment of high-salt sewage can only solve the problems of COD and ammonia nitrogen, but cannot solve the high-salt pollution. Therefore, some enterprises adopt multi-effect evaporation on the high-salinity wastewater, the energy consumption is high, the generated crystal salt becomes dangerous waste, and the treatment cost is increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-salinity sewage treatment process which can remove and utilize salt besides COD and ammonia nitrogen and aims at solving the problems that the desalted water and the strong brine generated by reverse osmosis membrane filtration in the conventional pickled vegetable sewage treatment are inconvenient to recycle due to overhigh water temperature and low water temperature of a biochemical system, so that the strain activity is insufficient.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-salinity sewage treatment process comprises the steps of firstly collecting high-salinity sewage of each shift generated in a workshop to a water collecting tank and buffering to balance water quality; then carrying out biochemical treatment in a biochemical system; then leading the biochemical sewage to a sedimentation tank for sedimentation treatment, pumping the settled sludge into a filter press by a sludge reflux pump for filter pressing, the clear water after filter pressing is recovered to a water collecting tank for circular treatment again, the sewage after sedimentation is led to an MBR membrane tank for filtration, the water storage tank is connected with a clean water tank for storing water, and clean water generated after the MBR membrane filtration also enters the clean water tank, pumping the filtered sludge into a filter press by a sludge reflux pump for filter pressing, pumping the water in the clean water tank into a reverse osmosis desalination system by a pump, generating two pieces of water after reverse osmosis desalination, namely desalinated water and strong brine are respectively stored in a desalinating water tank and a strong brine tank, an energy-saving water temperature heat pump is adopted to cool the desalinated water and the strong brine generated after reverse osmosis desalination, and the heat of the desalted water and the strong brine is recycled and applied to an aerobic biochemical pool and an anaerobic biochemical pool in a biochemical system which needs to be heated; the cooled desalted water is disinfected by sodium hypochlorite produced in an electrolytic sodium hypochlorite system, and finally can be completely reused as tap water or directly discharged; and the concentrated brine after cooling is disinfected through sodium hypochlorite disinfectant produced in an electrolytic sodium hypochlorite system or is subjected to ozone and ultraviolet sterilization treatment, the final part can be recycled through salinity regulation, the excessive part generates sodium hypochlorite disinfectant through electrolysis of the concentrated brine and is recycled for disinfection of the desalted water and the concentrated brine and disinfection of other places, when the part is still excessive after the part is recycled through disinfection treatment and is electrolyzed to produce the sodium hypochlorite disinfectant, the rest part can be put into a multi-effect evaporator to perform multi-effect evaporation or direct solarization for natural evaporation, the evaporated steam water can be recycled as desalted water to be further treated as tap water for recycling, and the crystallized solid waste can be used as animal feed or hazardous waste or a sodium chloride material required by standby electrolytic sodium hypochlorite production.
Further preferably, the biochemical system comprises a first-stage aerobic biochemical pool, a first-stage anaerobic biochemical pool, a second-stage aerobic biochemical pool and a second-stage anaerobic biochemical pool, and can perform two-stage biochemical treatment.
Further preferably, the sedimentation tank adopts a primary sedimentation tank and a secondary sedimentation tank.
Further preferably, the temperature of the anaerobic biochemical pool and the aerobic biochemical pool in the biochemical system is kept at 25 ℃.
Compared with the prior art, the invention has the following beneficial effects:
the high-salinity sewage treatment process provided by the invention can be used for multi-channel digestion and utilization of a large amount of waste water generated by processing pickled vegetables, has the advantages of large treatment capacity, high water quality standard, no generation of hazardous waste and the like, and can fully solve the problem of the treatment of a large amount of sewage from pickled vegetables. The biochemical system has the advantages that the heat pump technology is specifically adopted, the water temperature of the strong brine and the desalted water is reduced, meanwhile, the water temperature of the biochemical system is increased, the temperature required by biochemical strains is reached, the strain activity is increased, the biochemical system is more efficient, the separated strong brine and the desalted water are reduced, the problem of product acidification due to overhigh water temperature is solved, and the method is more suitable for pickled vegetable recycling.
Drawings
FIG. 1 is a block diagram of a high salinity wastewater treatment process of the present invention.
Detailed Description
The invention is further illustrated by the following description and examples in conjunction with the accompanying drawings.
According to the high-salinity sewage treatment process provided by the invention, as shown in figure 1, high-salinity sewage of each shift generated in a workshop is collected into a water collecting tank and the water quality is buffered and balanced, and the water quality fluctuation of the collected high-salinity sewage is large due to the shift process in the workshop and other reasons, so that the high-salinity sewage is concentrated in the water collecting tank to buffer and balance the water quality, and the process is used for ensuring the balance and stability of the water quality entering a next biochemical system; then, performing two-stage biochemical treatment in a biochemical system, namely introducing the sewage into a first-stage aerobic biochemical tank, a first-stage anaerobic biochemical tank, a second-stage aerobic biochemical tank and a second-stage anaerobic biochemical tank for two-stage biochemical treatment; then leading the biochemical sewage to a sedimentation tank for sedimentation treatment, wherein a second-stage sedimentation tank is adopted for sedimentation sludge in order to prolong the cleaning period of an MBR membrane in the next filtering system, namely a first-stage sedimentation tank and a second-stage sedimentation tank are adopted for sedimentation sludge, the sedimentated sludge is pumped into a filter press by a sludge reflux pump for filter pressing, a small amount of sludge cake generated is used as organic fertilizer, clear water after filter pressing is recycled to a water collecting tank for circulation treatment again, and the sedimentated sewage is led to an MBR membrane tank for filtering, the MBR membrane in the MBR membrane tank not only intercepts biochemical bacteria and keeps the quantity of the biochemical bacteria, thereby improving the biochemical treatment efficiency, but also can intercept suspended matters and microorganisms by the MBR membrane, reduce turbidity, satisfy the water inlet requirement of the subsequent reverse osmosis MBR desalination system, because the water produced by the MBR membrane has intermittence and can not ensure the continuous water inlet requirement of the reverse osmosis desalination system, therefore, a clear water, clear water generated after the MBR membrane filtration also enters a clear water tank, the filtered sludge is pumped into a filter press by a sludge reflux pump for filter pressing, water in the clear water tank is pumped into a reverse osmosis desalination system by a pump, two pieces of water are generated after reverse osmosis desalination, namely, the desalinated water and the strong brine are respectively stored in a desalinating pool and a strong brine pool, the water temperatures of the desalinated water and the strong brine are increased to 25-30 ℃ due to the requirement of the prior biochemical system on the water temperature, because the problem of acidification of the product caused by overhigh water temperature in the process of recycling and processing pickled vegetables, an energy-saving water heating pump is adopted to cool the desalted water and the strong brine generated after reverse osmosis desalination, the heat of the desalted water and the strong brine is recycled and applied to an aerobic biochemical pool and an anaerobic biochemical pool in a biochemical system which needs to be heated, so that the water temperature is increased, the activity of strains is increased, and the biochemical treatment efficiency of the biochemical system is improved; the desalted water after being cooled is subjected to high-precision filtration by a reverse osmosis membrane, namely an MBR membrane, in a reverse osmosis desalination system, harmful substances such as salinity, microorganisms, viruses, heavy metals and the like are removed, and is disinfected by sodium hypochlorite produced in an electrolytic sodium hypochlorite system for safety, so that the desalted water can be completely recycled as tap water and can be directly discharged finally as the water quality is reliable; the cooled strong brine is subjected to high-precision filtration by a reverse osmosis membrane, namely an MBR membrane in a reverse osmosis desalination system to intercept harmful substances such as microorganisms and escherichia coli, then is subjected to disinfection by sodium hypochlorite disinfectant produced in an electrolytic sodium hypochlorite system or treatment such as ozone and ultraviolet sterilization, the final part can be recycled by adjusting salinity, the excessive part is recycled by electrolyzing the strong brine to produce sodium hypochlorite disinfectant for disinfection of desalinated water and strong brine and disinfection of other places in a workshop, the sodium hypochlorite disinfectant can also be packaged and used as an external product, when the sodium hypochlorite disinfectant is recycled by disinfection treatment and electrolysis and remains excessive, the rest part can be put into a multi-effect evaporator for multi-effect evaporation or directly sun-cured for natural evaporation, and the evaporated steam water can be recycled as desalted water for further treatment and reuse as tap water, the crystallized solid waste can be used as animal feed or hazardous waste or used as a sodium chloride material for producing required sodium hypochlorite by electrolyzing sodium hypochlorite.
Further preferably, the MBR membrane adopts a PTFE membrane and a PVDF membrane.
Further preferably, the temperature of the anaerobic biochemical pool and the aerobic biochemical pool in the biochemical system is kept at about 25 ℃.
The high-salinity sewage treatment process provided by the invention has the advantages that the oxidation and the nitration are carried out firstly, and then the hydrolysis and the denitrification are carried out, so that the decomposition and digestion speed of organic matters in the sewage is increased, and the ammonia nitrogen can be removed quickly; an energy-saving water heating pump is adopted to cool the desalted water and the strong brine generated after reverse osmosis desalination, and the heat of the desalted water and the strong brine is recycled and applied to an aerobic biochemical pool and an anaerobic biochemical pool in a biochemical system which needs to be heated, so that the water temperature is increased to increase the activity of strains, and the biochemical treatment efficiency of the biochemical system is improved; the end of the system uses the electrolysis sodium hypochlorite system to process the strong brine into sodium hypochlorite disinfectant through the electrolysis principle, and the sodium hypochlorite disinfectant is sold or used by oneself as a product, so that the problem that the strong brine cannot be recycled is solved, and the strong brine is processed into a sodium hypochlorite product to increase income. The treatment process of the invention does not produce hazardous waste, has zero emission and no pollution, reduces the temperature of the reclaimed strong brine and the desalted water by the heat pump to be the same as the ground temperature, prevents the product from being acidified due to overhigh water temperature, solves the problem that the pickled vegetables can not be reclaimed due to overhigh water temperature, and introduces a good water system to be reclaimed completely.
Although the present invention has been described with reference to the specific embodiments, it should be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (4)
1. A high-salinity sewage treatment process is characterized in that high-salinity sewage generated in a workshop is collected into a water collecting tank and buffered to balance water quality; then carrying out biochemical treatment in a biochemical system; then leading the biochemical sewage to a sedimentation tank for sedimentation treatment, pumping the settled sludge into a filter press by a sludge reflux pump for filter pressing, the clear water after filter pressing is recovered to a water collecting tank for circular treatment again, the sewage after sedimentation is led to an MBR membrane tank for filtration, the water storage tank is connected with a clean water tank for storing water, and clean water generated after the MBR membrane filtration also enters the clean water tank, pumping the filtered sludge into a filter press by a sludge reflux pump for filter pressing, pumping the water in the clean water tank into a reverse osmosis desalination system by a pump, generating two pieces of water after reverse osmosis desalination, namely desalinated water and strong brine are respectively stored in a desalinating water tank and a strong brine tank, an energy-saving water temperature heat pump is adopted to cool the desalinated water and the strong brine generated after reverse osmosis desalination, and the heat of the desalted water and the strong brine is recycled and applied to an aerobic biochemical pool and an anaerobic biochemical pool in a biochemical system which needs to be heated; the cooled desalted water is disinfected by sodium hypochlorite produced in an electrolytic sodium hypochlorite system, and finally can be completely reused as tap water or directly discharged; and the concentrated brine after cooling is disinfected through sodium hypochlorite disinfectant produced in an electrolytic sodium hypochlorite system or is subjected to ozone and ultraviolet sterilization treatment, the final part can be recycled through salinity regulation, the excessive part generates sodium hypochlorite disinfectant through electrolysis of the concentrated brine and is recycled for disinfection of the desalted water and the concentrated brine and disinfection of other places, when the part is still excessive after the part is recycled through disinfection treatment and is electrolyzed to produce the sodium hypochlorite disinfectant, the rest part can be put into a multi-effect evaporator to perform multi-effect evaporation or direct solarization for natural evaporation, the evaporated steam water can be recycled as desalted water to be further treated as tap water for recycling, and the crystallized solid waste can be used as animal feed or hazardous waste or a sodium chloride material required by standby electrolytic sodium hypochlorite production.
2. The high-salinity sewage treatment process according to claim 1, wherein the biochemical system comprises a primary aerobic biochemical tank, a primary anaerobic biochemical tank, a secondary aerobic biochemical tank and a secondary anaerobic biochemical tank, and can perform two-stage biochemical treatment.
3. The high-salinity sewage treatment process according to claim 1, wherein the sedimentation tank adopts a primary sedimentation tank and a secondary sedimentation tank.
4. The high salinity sewage treatment process of claim 1, wherein the temperature of the anaerobic biochemical tank and the aerobic biochemical tank in the biochemical system is maintained at 25 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011328715.1A CN112591985A (en) | 2020-11-24 | 2020-11-24 | High-salinity sewage treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011328715.1A CN112591985A (en) | 2020-11-24 | 2020-11-24 | High-salinity sewage treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112591985A true CN112591985A (en) | 2021-04-02 |
Family
ID=75183781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011328715.1A Pending CN112591985A (en) | 2020-11-24 | 2020-11-24 | High-salinity sewage treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112591985A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017114705A (en) * | 2015-12-22 | 2017-06-29 | 学校法人福岡大学 | Method for producing sodium hypochlorite, and sodium hypochlorite production device |
| CN107892440A (en) * | 2017-12-04 | 2018-04-10 | 青岛市黎明水处理设备有限公司 | A kind of pickles, the full reuse treatment process of salted vegetables high-salinity wastewater zero-emission |
| CN108314269A (en) * | 2018-04-04 | 2018-07-24 | 湖北君集水处理有限公司 | A kind of system and method for macropore denitrogenation acid-basic regenerated waste liquids in water processing and reuse |
-
2020
- 2020-11-24 CN CN202011328715.1A patent/CN112591985A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017114705A (en) * | 2015-12-22 | 2017-06-29 | 学校法人福岡大学 | Method for producing sodium hypochlorite, and sodium hypochlorite production device |
| CN107892440A (en) * | 2017-12-04 | 2018-04-10 | 青岛市黎明水处理设备有限公司 | A kind of pickles, the full reuse treatment process of salted vegetables high-salinity wastewater zero-emission |
| CN108314269A (en) * | 2018-04-04 | 2018-07-24 | 湖北君集水处理有限公司 | A kind of system and method for macropore denitrogenation acid-basic regenerated waste liquids in water processing and reuse |
Non-Patent Citations (1)
| Title |
|---|
| 张雪龄 等: "《江苏省化工园区危险废物统筹规划管理及应用》", vol. 1, 吉林大学出版社, pages: 100 - 101 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102295378B (en) | Treatment and recycling method of ammonia nitrogen containing high-salt catalyst wastewater | |
| CN108529802B (en) | Zero-discharge process for discharging high-salt-content wastewater in titanium dioxide production | |
| CN113636702A (en) | Recycling and zero-discharge process for salt-containing organic wastewater | |
| CN107235601B (en) | Comprehensive electroplating wastewater treatment method, treatment system and application | |
| CN110835199A (en) | Electroplating wastewater zero-discharge treatment system and treatment process thereof | |
| CN103771642A (en) | Recycling method for saponified ammonium-sulfate wastewater in rare soil | |
| CN101434447B (en) | Technological process for advanced treatment and recycle of cold rolling water | |
| CN106495404A (en) | A kind of processing method of the high salinity cupric organic wastewater of highly acidity | |
| CN107226581B (en) | Zinc-containing wastewater treatment method, treatment system and application | |
| CN110627290A (en) | High salt waste water resourceful treatment system | |
| CN107200435B (en) | Nickel-containing wastewater treatment method, treatment system and application | |
| CN115448534A (en) | Treatment method and system for lithium iron phosphate wastewater | |
| CN210620514U (en) | Flexible landfill leachate treatment system | |
| CN111704310A (en) | Stainless steel comprehensive wastewater zero discharge system and process method | |
| CN212924710U (en) | Industrial wastewater zero discharge treatment system | |
| CN110590074A (en) | High-concentration pickle wastewater treatment process | |
| CN103896457A (en) | Fine chemical wastewater treatment process | |
| CN110563232A (en) | Mineral recovery and zero discharge process for high-salinity high-organic-matter wastewater | |
| CN103011529A (en) | Industrial wastewater treatment technology | |
| CN112591985A (en) | High-salinity sewage treatment process | |
| CN112960860B (en) | Treatment process for flue gas desulfurization wastewater by resource utilization of copper-containing waste | |
| CN113480077A (en) | High-salt high-COD wastewater recovery and zero-discharge treatment device and process | |
| CN107365013B (en) | Cyanide-containing wastewater treatment method, treatment system and application | |
| CN113912251A (en) | Treatment process of high-concentration degradation-resistant pickling wastewater | |
| CN114772822A (en) | Circulating cooling water zero-pollution discharge treatment system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |