CN111499097A - Municipal sewage treatment process - Google Patents
Municipal sewage treatment process Download PDFInfo
- Publication number
- CN111499097A CN111499097A CN202010307912.9A CN202010307912A CN111499097A CN 111499097 A CN111499097 A CN 111499097A CN 202010307912 A CN202010307912 A CN 202010307912A CN 111499097 A CN111499097 A CN 111499097A
- Authority
- CN
- China
- Prior art keywords
- sewage
- tank
- treatment process
- sludge
- phosphorus
- 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 82
- 238000011282 treatment Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000010802 sludge Substances 0.000 claims abstract description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 241000894006 Bacteria Species 0.000 claims abstract description 16
- 239000012535 impurity Substances 0.000 claims abstract description 15
- 238000001914 filtration Methods 0.000 claims abstract description 14
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 13
- 239000011574 phosphorus Substances 0.000 claims abstract description 13
- 244000005700 microbiome Species 0.000 claims abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 11
- 239000002244 precipitate Substances 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000004062 sedimentation Methods 0.000 claims description 13
- 238000005273 aeration Methods 0.000 claims description 12
- 239000008394 flocculating agent Substances 0.000 claims description 11
- 238000004659 sterilization and disinfection Methods 0.000 claims description 8
- 239000000645 desinfectant Substances 0.000 claims description 6
- 230000001376 precipitating effect Effects 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 230000001954 sterilising effect Effects 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical group [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 3
- 239000007844 bleaching agent Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 230000000644 propagated effect Effects 0.000 claims description 3
- 230000001877 deodorizing effect Effects 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 238000002156 mixing Methods 0.000 claims 1
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 241000233866 Fungi Species 0.000 description 2
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012629 purifying agent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
- C02F3/308—Biological phosphorus removal
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
The invention belongs to the field of sewage treatment, and particularly discloses a municipal sewage treatment process, which adopts a multi-layer grid for filtering impurities in sewage to realize filtering of the impurities with different sizes, and simultaneously adjusts the pH value in the sewage to avoid certain influence of the pH value of water on treatment equipment in the subsequent treatment process, so as to ensure the pH value of sewage discharge, takes phosphorus from the sewage by phosphorus-accumulating bacteria microorganisms in a biological reaction tank, stores the phosphorus in other forms in the bacteria, reduces nitrogen in the sewage into nitrogen gas by denitrifying bacteria to be discharged to the atmosphere, realizes removal of nitrogen and phosphorus elements in the water, is environment-friendly and does not cause secondary pollution to the water, and simultaneously uses the generated precipitate and the used sludge for treatment so as to be recycled.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a municipal sewage treatment process.
Background
In recent years, groundwater in most cities throughout the country is polluted to some extent, and tends to be more serious year by year. The increasingly serious pollution not only reduces the use function of water, but also aggravates the problem of water resource shortage, brings serious influence to the sustainable development strategy being implemented in China, and also seriously threatens the drinking water safety of urban residents and the health of people. At present, two methods are adopted for sewage treatment: one is adding water purifying agent into sewage; the other method is that the waste water passes through different treatment tanks in sequence, and different chemical reagents are added into the treatment tanks, so that certain secondary pollution is brought during treatment.
Disclosure of Invention
The invention aims to provide a municipal sewage treatment process to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a municipal sewage treatment process comprises the following steps:
s1, conveying the raw water flow to a grid through water conveying equipment, and filtering coarse impurities in the sewage through the grid in a graded multi-layer arrangement;
s2, enabling the filtered sewage to flow into a pH value adjusting tank, measuring the pH value of the sewage through a pH test paper, and adjusting according to the corresponding pH value to keep the sewage neutral;
s3, after adjusting the pH value, pumping the treated sewage into a sedimentation tank through a water pump, standing and precipitating for 6-8h, filtering, inputting the filtered filtrate into a secondary sedimentation tank, precipitating again, and putting the filtered precipitate into dewatering equipment for treatment;
s4, the sewage treated in the step S3 enters an aeration tank, and the same amount of activated sludge is added into the aeration tank for multiple times, the organic matters in the sewage are degraded by the microorganisms in the sludge, and the microorganisms are propagated and moved by the released energy;
s5, filtering the sewage in the aeration tank, pumping the sewage into a biological reaction tank, taking phosphorus from the sewage through phosphorus-accumulating bacteria microorganisms under aerobic conditions, storing the phosphorus in other forms in bacteria, reducing nitrogen in the sewage into nitrogen by denitrifying bacteria, discharging the nitrogen into the atmosphere, and filtering;
s6, the treated sewage enters a sterilization and disinfection tank, a disinfectant is added into the tank, and the tank is irradiated by an ultraviolet lamp, so that the treated sewage can be discharged to the outside.
Preferably, the grid in step S1 is formed by arranging a plurality of grids with different thicknesses in sequence, the distance between the thick grids at the top end is 20-26mm, and the distance between the thin grids at the bottom end is 2-4 mm.
Preferably, when the secondary sedimentation tank is used for sedimentation in the step S3, a flocculating agent is added into the secondary sedimentation tank, and the flocculating agent is mixed with stirring to increase the machine edge and the number of times of collision between the flocculating agent and impurity particles in water, wherein the flocculating agent is polyacrylamide.
Preferably, the precipitate is dehydrated by a dehydration device in step S3, and then the dehydrated precipitate is landfilled.
Preferably, after the activated sludge is added in step S4, the sewage and the sludge are stirred and mixed for 5-8min, and after stirring and standing for 1-2h, the activated sludge is added again.
Preferably, the sludge filtered from the sewage in the aeration tank and the impurities filtered from the sewage in the biological reaction tank in the step S5 are sent to a sludge concentration tank for compression treatment, sterilization and deodorization, and then dried.
Preferably, the disinfectant in step S5 is bleaching powder, and the irradiation time is 10-12h when ultraviolet lamp is used for irradiation sterilization.
Preferably, the dewatering equipment used is a sludge dewatering machine.
Compared with the prior art, the invention has the beneficial effects that: adopt hierarchical multi-layer arrangement's grid to filter the impurity in the sewage, realize that the impurity of equidimension not filters, still adjust the pH value in the sewage simultaneously, avoid in subsequent treatment process, the pH valve of water produces certain influence to treatment facility, guarantee sewage discharge's pH valve, through in the biological reaction pond, phosphorus-accumulating bacteria microorganism takes up phosphorus from sewage, and store phosphorus in the fungus body with other forms, then utilize denitrifying bacteria to reduce into nitrogen gas in the sewage and discharge to the atmosphere in, realize getting rid of the nitrogen phosphorus element to the aquatic, the environmental protection just can not cause secondary pollution to water, use the deposit to the production and the mud after using simultaneously, handle, so that recycle.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
The invention provides a technical scheme that: a municipal sewage treatment process comprises the following steps:
s1, conveying the raw water flow to a grid through water conveying equipment, and filtering coarse impurities in the sewage through the grid in a graded multi-layer arrangement;
s2, enabling the filtered sewage to flow into a pH value adjusting tank, measuring the pH value of the sewage through a pH test paper, and adjusting according to the corresponding pH value to keep the sewage neutral;
s3, after adjusting the pH value, pumping the treated sewage into a sedimentation tank through a water pump, standing and precipitating for 6-8h, filtering, inputting the filtered filtrate into a secondary sedimentation tank, precipitating again, and putting the filtered precipitate into dewatering equipment for treatment;
s4, the sewage treated in the step S3 enters an aeration tank, and the same amount of activated sludge is added into the aeration tank for multiple times, the organic matters in the sewage are degraded by the microorganisms in the sludge, and the microorganisms are propagated and moved by the released energy;
s5, filtering the sewage in the aeration tank, pumping the sewage into a biological reaction tank, taking phosphorus from the sewage through phosphorus-accumulating bacteria microorganisms under aerobic conditions, storing the phosphorus in other forms in bacteria, reducing nitrogen in the sewage into nitrogen by denitrifying bacteria, discharging the nitrogen into the atmosphere, and filtering;
s6, the treated sewage enters a sterilization and disinfection tank, a disinfectant is added into the tank, and the tank is irradiated by an ultraviolet lamp, so that the treated sewage can be discharged to the outside.
Furthermore, in step S1, the grid is formed by arranging a plurality of grids with different thicknesses in sequence, the distance between the thick grids at the top end is 20-26mm, and the distance between the thin grids at the bottom is 2-4 mm.
Further, when the secondary sedimentation tank is sedimented in the step S3, a flocculating agent is added thereto, and the flocculating agent is stirred to increase the number of times and the machine edge of the collision between the flocculating agent and the impurity particles in the water, wherein the flocculating agent is polyacrylamide.
Further, the precipitate is dehydrated by a dehydration device in step S3, and then the dehydrated precipitate is landfilled.
Further, after the activated sludge is added in step S4, the sewage and the sludge are stirred and mixed for 5-8min, and after stirring and standing for 1-2h, the activated sludge is added again.
Further, the sludge filtered by the sewage in the aeration tank and the impurities filtered by the sewage in the biological reaction tank in the step S5 are sent into a sludge concentration tank for compression treatment, sterilization and deodorization, and then the sludge is dried.
Further, in step S5, the disinfectant is bleaching powder, and the irradiation time is 10-12h when ultraviolet light is used for irradiation sterilization.
Further, the used dehydration equipment is a sludge dehydrator.
Adopt hierarchical multi-layer arrangement's grid to filter the impurity in the sewage, realize that the impurity of equidimension not filters, still adjust the pH value in the sewage simultaneously, avoid in subsequent treatment process, the pH valve of water produces certain influence to treatment facility, guarantee sewage discharge's pH valve, through in the biological reaction pond, phosphorus-accumulating bacteria microorganism takes up phosphorus from sewage, and store phosphorus in the fungus body with other forms, then utilize denitrifying bacteria to reduce into nitrogen gas in the sewage and discharge to the atmosphere in, realize getting rid of the nitrogen phosphorus element to the aquatic, the environmental protection just can not cause secondary pollution to water, use the deposit to the production and the mud after using simultaneously, handle, so that recycle.
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 (8)
1. A municipal sewage treatment process is characterized in that: the method comprises the following steps:
s1, conveying the raw water flow to a grid through water conveying equipment, and filtering coarse impurities in the sewage through the grid in a graded multi-layer arrangement;
s2, enabling the filtered sewage to flow into a pH value adjusting tank, measuring the pH value of the sewage through a pH test paper, and adjusting according to the corresponding pH value to keep the sewage neutral;
s3, after adjusting the pH value, pumping the treated sewage into a sedimentation tank through a water pump, standing and precipitating for 6-8h, filtering, inputting the filtered filtrate into a secondary sedimentation tank, precipitating again, and putting the filtered precipitate into dewatering equipment for treatment;
s4, the sewage treated in the step S3 enters an aeration tank, and the same amount of activated sludge is added into the aeration tank for multiple times, the organic matters in the sewage are degraded by the microorganisms in the sludge, and the microorganisms are propagated and moved by the released energy;
s5, filtering the sewage in the aeration tank, pumping the sewage into a biological reaction tank, taking phosphorus from the sewage through phosphorus-accumulating bacteria microorganisms under aerobic conditions, storing the phosphorus in other forms in bacteria, reducing nitrogen in the sewage into nitrogen by denitrifying bacteria, discharging the nitrogen into the atmosphere, and filtering;
s6, the treated sewage enters a sterilization and disinfection tank, a disinfectant is added into the tank, and the tank is irradiated by an ultraviolet lamp, so that the treated sewage can be discharged to the outside.
2. The municipal sewage treatment process of claim 1, wherein: in the step S1, the grids are formed by sequentially arranging a plurality of grids with different thicknesses, the distance between the thick grids at the top end is 20-26mm, and the distance between the thin grids at the bottom is 2-4 mm.
3. The municipal sewage treatment process of claim 1, wherein: and step S3, adding a flocculating agent into the secondary sedimentation tank when sedimentation is carried out in the secondary sedimentation tank, and stirring in a matching manner to increase the machine edge and the times of collision of the flocculating agent and impurity particles in water, wherein the flocculating agent is polyacrylamide.
4. The municipal sewage treatment process of claim 1, wherein: and (8) dehydrating the precipitate in the step (S3) by using a dehydrating device, and then performing landfill treatment on the dehydrated precipitate.
5. The municipal sewage treatment process of claim 1, wherein: and step S4, after adding the activated sludge, stirring and mixing the sewage and the sludge for 5-8min, standing for 1-2h after stirring, and adding the activated sludge again.
6. The municipal sewage treatment process of claim 1, wherein: and S5, feeding the sludge filtered by the sewage in the aeration tank and the impurities filtered by the sewage in the biological reaction tank into a sludge concentration tank, compressing, sterilizing, deodorizing, and drying.
7. The municipal sewage treatment process of claim 1, wherein: in step S5, the disinfectant is bleaching powder, and the irradiation time is 10-12h when ultraviolet lamp is used for irradiation sterilization.
8. The municipal sewage treatment process of claim 4, wherein: the dewatering equipment used is a sludge dewatering machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010307912.9A CN111499097A (en) | 2020-04-17 | 2020-04-17 | Municipal sewage treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010307912.9A CN111499097A (en) | 2020-04-17 | 2020-04-17 | Municipal sewage treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111499097A true CN111499097A (en) | 2020-08-07 |
Family
ID=71867487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010307912.9A Pending CN111499097A (en) | 2020-04-17 | 2020-04-17 | Municipal sewage treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111499097A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114436471A (en) * | 2022-01-09 | 2022-05-06 | 山东微观生态研究中心有限公司 | Environment-friendly process technology for sewage treatment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103848535A (en) * | 2012-10-15 | 2014-06-11 | 云南省环境科学研究院 | Multimedium renewable biological filtering method and device |
| CN105585220A (en) * | 2016-01-27 | 2016-05-18 | 程冠华 | Urban sewage treatment system and purification method |
| CN109020060A (en) * | 2018-08-13 | 2018-12-18 | 佛山市皓信达建设工程有限公司 | Sewage disposal system |
-
2020
- 2020-04-17 CN CN202010307912.9A patent/CN111499097A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103848535A (en) * | 2012-10-15 | 2014-06-11 | 云南省环境科学研究院 | Multimedium renewable biological filtering method and device |
| CN105585220A (en) * | 2016-01-27 | 2016-05-18 | 程冠华 | Urban sewage treatment system and purification method |
| CN109020060A (en) * | 2018-08-13 | 2018-12-18 | 佛山市皓信达建设工程有限公司 | Sewage disposal system |
Non-Patent Citations (1)
| Title |
|---|
| 吴向阳等主编: "《水污染控制工程及设备》", 30 November 2015, 中国环境出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114436471A (en) * | 2022-01-09 | 2022-05-06 | 山东微观生态研究中心有限公司 | Environment-friendly process technology for sewage treatment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103204605B (en) | Method for treating garlic processing waste water | |
| CN106927628A (en) | Light electrolysis-Fenton-EGSB-A/O-BCO-BAF-coagulating treatment pharmacy waste water technique | |
| CN101708917B (en) | Device and method for integrally processing garbage percolate | |
| CN1907889A (en) | Apparatus and method of treating city domestic refuse percolation liquid by two-stage UASB+A/O technique | |
| CN105417899A (en) | Ultrasonic electro-adsorption electro-Fenton and desalination and decoloration water treatment device and method | |
| CN110407412A (en) | It is a kind of to utilize high-power electron beam catalysis oxidation method for treating garbage percolation liquid | |
| CN112358137A (en) | Kitchen waste and leachate synergistic treatment process | |
| CN110002639A (en) | A kind of processing unit and method of middle and advanced stage aged refuse in MSW landfill percolate | |
| CN102464420B (en) | Sewage physical-chemical treatment method | |
| CN109179883A (en) | A kind of preprocess method and device for aged consumer waste infiltration liquid | |
| Inanc et al. | Colour removal from fermentation industry effluents | |
| CN107285573A (en) | The processing method and system of a kind of percolate | |
| CN208362111U (en) | A kind of urban sewage treatment system | |
| CN113698049A (en) | Process for treating and recycling pig-raising wastewater containing water-washed manure and water-soaked manure | |
| CN207243564U (en) | A kind of efficiently A2O waste water control integration apparatus | |
| CN111499097A (en) | Municipal sewage treatment process | |
| KR101136420B1 (en) | Integrated method for treating food waste water, livestock waste water, and night soil | |
| CN110759603A (en) | Method for treating landfill leachate by non-membrane method | |
| CN206624744U (en) | Light electrolysis Fenton EGSB A/O BCO BAF coagulating treatment pharmacy waste water systems | |
| CN214735164U (en) | Wastewater treatment system | |
| CN105016571B (en) | Processing method of paper-pulping black liquor | |
| CN114409207A (en) | Printing ink effluent disposal system | |
| CN211078800U (en) | System for treating regenerated waste liquid of targeted nitrogen and phosphorus removal resin | |
| CN209307174U (en) | Liquor production wastewater processing system | |
| CN112174437A (en) | Swill filtrating resourceful treatment system |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200807 |
|
| RJ01 | Rejection of invention patent application after publication |