CN112321064A - Biochemical advanced treatment unit of BBR sewage - Google Patents
Biochemical advanced treatment unit of BBR sewage Download PDFInfo
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- CN112321064A CN112321064A CN202011062972.5A CN202011062972A CN112321064A CN 112321064 A CN112321064 A CN 112321064A CN 202011062972 A CN202011062972 A CN 202011062972A CN 112321064 A CN112321064 A CN 112321064A
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- bbr
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- sewage
- mixing
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- 239000010865 sewage Substances 0.000 title claims abstract description 18
- 238000005842 biochemical reaction Methods 0.000 claims abstract description 21
- 238000005273 aeration Methods 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000010276 construction Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims abstract 2
- 238000004659 sterilization and disinfection Methods 0.000 claims description 12
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 6
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 235000015097 nutrients Nutrition 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 241000193830 Bacillus <bacterium> Species 0.000 claims description 3
- 241000193744 Bacillus amyloliquefaciens Species 0.000 claims description 3
- 241000194108 Bacillus licheniformis Species 0.000 claims description 3
- 244000063299 Bacillus subtilis Species 0.000 claims description 3
- 235000014469 Bacillus subtilis Nutrition 0.000 claims description 3
- 206010021143 Hypoxia Diseases 0.000 claims description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 3
- 238000005276 aerator Methods 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 235000019270 ammonium chloride Nutrition 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 3
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 claims description 3
- 229940039790 sodium oxalate Drugs 0.000 claims description 3
- 241000193755 Bacillus cereus Species 0.000 claims description 2
- 241000194107 Bacillus megaterium Species 0.000 claims description 2
- 241000194103 Bacillus pumilus Species 0.000 claims description 2
- 241000193388 Bacillus thuringiensis Species 0.000 claims description 2
- 241000194105 Paenibacillus polymyxa Species 0.000 claims description 2
- 229940097012 bacillus thuringiensis Drugs 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 230000033228 biological regulation Effects 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 229910052698 phosphorus Inorganic materials 0.000 description 9
- 239000011574 phosphorus Substances 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 244000005700 microbiome Species 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000192710 Microcystis aeruginosa Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 230000000382 dechlorinating effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation 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
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- 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
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention relates to a BBR sewage biochemical advanced treatment device, which comprises a pretreatment tank, a comprehensive regulation tank, an anaerobic tank, a BBR biochemical reaction tank, an anoxic tank, an aerobic biochemical tank and a filter tank which are connected in sequence, wherein a water inlet of the pretreatment tank is provided with a biological membrane, and the bottom of the pretreatment tank is provided with a microporous aeration device; be provided with the (mixing) shaft in the integrated processing pond, this (mixing) shaft upper end is enclosed construction to its upper end is provided with its driving motor of control be equipped with the stirring vane that multiunit and its inside are linked together on the (mixing) shaft to crisscross setting from top to bottom, every blade bottom is equipped with a plurality of ventholes, the (mixing) shaft bottom is through the forced draught blower in the swivel joint connection outside set up BBR contact device in the BBR biochemical reaction pond to it has the biofilm to adhere to on this BBR contact device, this BBR biochemical reaction pond bottom is provided with aeration pipeline, aeration valve and the aeration head that communicates with the air-blower simultaneously.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a BBR sewage biochemical advanced treatment device.
Background
Organic matter is a major pollutant of domestic sewage, for example: starch, protein, saccharide, mineral oil, etc. The chemical oxygen demand, the biological oxygen demand, the total nitrogen content and the total phosphorus content of the urban domestic sewage are relatively high. When the water with higher nitrogen content and phosphorus content is discharged into the nature, eutrophication of water is easily caused, and a large amount of algae grows and breeds, so that the water quality is deteriorated, the environment is polluted, red tide and water bloom are caused when the water is serious,
the prior art has the following problems: the removal rate of nitrogen and phosphorus is low, the occupied area is large, the power consumption is high, the removal of nitrogen and phosphorus cannot be ensured, the process is complex, and the processes of microorganism nitrification, denitrification, phosphorus release, phosphorus absorption and the like are generally required. When the temperature of the oxidation ditch method is below 12 ℃, the nitrogen removal rate is not high, so nitrogen removal is realized by prolonging the retention time, reducing the load operation and the like; in winter in the north, methods such as solar heating and geothermal pump heat preservation measures are adopted to improve the denitrification capability, but the occupied area, the power consumption, the investment cost and the operating cost are increased.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a BBR sewage biochemical advanced treatment device.
The technical scheme for solving the technical problems is as follows: the BBR sewage biochemical advanced treatment device comprises a pretreatment tank, a comprehensive regulation tank, an anaerobic tank, a BBR biochemical reaction tank, an anoxic tank, an aerobic biochemical tank and a filter tank which are connected in sequence, wherein a biomembrane is arranged at a water inlet of the pretreatment tank, and a micropore aeration device is arranged at the bottom of the pretreatment tank; be provided with the (mixing) shaft in the integrated processing pond, this (mixing) shaft upper end is enclosed construction to its upper end is provided with its driving motor of control be equipped with the stirring vane that multiunit and its inside are linked together on the (mixing) shaft to crisscross setting from top to bottom, every blade bottom is equipped with a plurality of ventholes, the (mixing) shaft bottom is through the forced draught blower in the swivel joint connection outside set up BBR contact device in the BBR biochemical reaction pond to it has the biofilm to adhere to on this BBR contact device, this BBR biochemical reaction pond bottom is provided with aeration pipeline, aeration valve and the aeration head that communicates with the air-blower simultaneously.
The invention further defines the technical scheme that:
the BBR contact body device is a three-dimensional rotary mesh contact body device.
The BBR biochemical reaction tank is added with bacillus, which comprises one or more of bacillus subtilis, bacillus licheniformis, bacillus cereus, bacillus thuringiensis, bacillus megaterium, bacillus polymyxa, bacillus amyloliquefaciens and bacillus pumilus.
The anoxic pond and the aerobic biochemical pond are both internally provided with a three-dimensional elastic filler device.
The bottom of the anoxic tank is provided with a perforated aeration pipe, and the bottom of the aerobic tank is provided with a microporous aerator.
The nutrient solution is added into the comprehensive adjusting tank, and comprises the following components in parts by weight: 15-26 parts of ammonium chloride, 10-20 parts of sodium bicarbonate, 5-11 parts of ferric chloride, 3-10 parts of magnesium chloride, 3-5 parts of phosphoric acid and 6-10 parts of sodium oxalate.
The water outlet of the filter tank is connected with a disinfection tank, a sealed ultraviolet disinfection lamp is arranged in the disinfection tank, the disinfection tank is connected with a BBR biochemical reaction tank through a return pipe, and a flushing pump is arranged on the return pipe.
The invention has the beneficial effects that: the invention has high treatment efficiency, can realize deep synchronous nitrogen and phosphorus removal, and provides favorable conditions for realizing the synchronous nitrogen and phosphorus removal in an anaerobic, anoxic and aerobic alternative state, while the comprehensive adjusting tank, the BBR biochemical reaction tank and the aerobic biochemical process are combined to further realize the deep nitrogen and phosphorus removal;
the three-dimensional rotary type net-shaped contact body device is arranged in the BBR biochemical reaction tank, has the function of adsorbing a large amount of organic matters in a water body, not only meets the buffer function of the anaerobic tank, but also enables most of insoluble carbon sources to be hydrolyzed into soluble small molecules under the action of extracellular hydrolase secreted after being adsorbed by BBR equipment in a large amount, and then the soluble small molecules are released into the anoxic tank, so that COD is reduced, meanwhile, the aeration pipe is arranged in the BBR biochemical reaction tank, the adsorption capacity of the turntable membrane-hanging sludge is increased, and partial organic matters enter sewage to enable the BOD value to be increased, so that the carbon source amount utilized by dechlorinating microorganisms in an anoxic environment is easier to be subjected to denitrification by denitrifying bacteria to ensure that the carbon source is more sufficient, and the total amount of the carbon source which is not subjected to hydrolysis in the water body and directly flows into the aerobic tank at the rear end.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
Example 1
The embodiment provides a BBR sewage biochemical advanced treatment device, as shown in FIG. 1, which comprises a pretreatment tank 1, a comprehensive regulation tank 2, an anaerobic tank 3, a BBR biochemical reaction tank 4, an anoxic tank 5, an aerobic biochemical tank 6 and a filtering tank 7, which are connected in sequence, wherein a biomembrane 8 is arranged at a water inlet of the pretreatment tank, and a microporous aeration device 9 is arranged at the bottom of the pretreatment tank; be provided with (mixing) shaft 10 in the integrated processing pond, this (mixing) shaft upper end is enclosed construction, and its upper end is provided with its driving motor 11 of control, be equipped with the stirring vane 12 that multiunit and its inside are linked together on the (mixing) shaft, and crisscross setting from top to bottom, every blade bottom is equipped with a plurality of ventholes, the (mixing) shaft bottom passes through the forced draught blower in rotary joint connection outside, set up BBR contact device 13 in BBR biochemical reaction pond, this BBR contact device is three-dimensional rotation type netted contact device, and it has the microbial film to adhere to on this BBR contact device, this BBR biochemical reaction pond bottom is provided with the aeration pipeline with the air-blower intercommunication simultaneously, aeration valve and aeration head, add the bacillus in BBR biochemical reaction pond, including the bacillus subtilis, bacillus licheniformis and bacillus amyloliquefaciens press 2: 1: 3 ratio is constituteed, oxygen deficiency bottom of the pool portion is equipped with perforation aeration pipe 14, good oxygen bottom of the pool portion is provided with microporous aerator 15, all be equipped with three-dimensional elastic filler device 16 in oxygen deficiency pond and the good oxygen biochemical pond simultaneously, disinfection pond 17 is connected to the filtering ponds delivery port, be equipped with sealed ultraviolet ray disinfection lamp 18 in this disinfection pond, the disinfection pond passes through the back flow and connects BBR biochemical reaction pond, and set up flush pump 19 on the back flow, add the nutrient solution in synthesizing the equalizing basin, this nutrient solution contains following component with the part by weight: 15-26 parts of ammonium chloride, 10-20 parts of sodium bicarbonate, 5-11 parts of ferric chloride, 3-10 parts of magnesium chloride, 3-5 parts of phosphoric acid and 6-10 parts of sodium oxalate.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides a biochemical advanced treatment unit of BBR sewage, includes pretreatment tank, comprehensive equalizing basin, anaerobism pond, BBR biochemical reaction pond, oxygen deficiency pond, good oxygen biochemical pool and the filtering ponds that connect gradually, its characterized in that: a biological membrane is arranged at the water inlet of the pretreatment tank, and a micropore aeration device is arranged at the bottom of the pretreatment tank; be provided with the (mixing) shaft in the integrated processing pond, this (mixing) shaft upper end is enclosed construction to its upper end is provided with its driving motor of control be equipped with the stirring vane that multiunit and its inside are linked together on the (mixing) shaft to crisscross setting from top to bottom, every blade bottom is equipped with a plurality of ventholes, the (mixing) shaft bottom is through the forced draught blower in the swivel joint connection outside set up BBR contact device in the BBR biochemical reaction pond to it has the biofilm to adhere to on this BBR contact device, this BBR biochemical reaction pond bottom is provided with aeration pipeline, aeration valve and the aeration head that communicates with the air-blower simultaneously.
2. The biochemical advanced treatment device for BBR sewage according to claim 1, wherein the BBR contact body device is a three-dimensional rotary mesh contact body device.
3. The BBR sewage biochemical advanced treatment device according to claim 2, wherein bacillus including one or more of the group consisting of Bacillus subtilis, Bacillus licheniformis, Bacillus cereus, Bacillus thuringiensis, Bacillus megaterium, Bacillus polymyxa, Bacillus amyloliquefaciens and Bacillus pumilus is added into the BBR biochemical reaction tank.
4. The biochemical deep treatment device for BBR sewage according to claim 1, wherein the anoxic tank and the aerobic biochemical tank are provided with three-dimensional elastic filler devices.
5. The biochemical advanced treatment device for BBR sewage as claimed in claim 1, wherein the bottom of said anoxic tank is provided with a perforated aeration pipe, and the bottom of said aerobic tank is provided with a microporous aerator.
6. The biochemical advanced treatment device for BBR sewage according to claim 1, wherein a nutrient solution is added into the comprehensive adjusting tank, and the nutrient solution comprises the following components in parts by weight: 15-26 parts of ammonium chloride, 10-20 parts of sodium bicarbonate, 5-11 parts of ferric chloride, 3-10 parts of magnesium chloride, 3-5 parts of phosphoric acid and 6-10 parts of sodium oxalate.
7. The BBR sewage biochemical advanced treatment device as claimed in claim 1, wherein the water outlet of the filter tank is connected with a disinfection tank, a sealed ultraviolet disinfection lamp is arranged in the disinfection tank, the disinfection tank is connected with the BBR biochemical reaction tank through a return pipe, and a flushing pump is arranged on the return pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011062972.5A CN112321064A (en) | 2020-09-30 | 2020-09-30 | Biochemical advanced treatment unit of BBR sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011062972.5A CN112321064A (en) | 2020-09-30 | 2020-09-30 | Biochemical advanced treatment unit of BBR sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112321064A true CN112321064A (en) | 2021-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011062972.5A Pending CN112321064A (en) | 2020-09-30 | 2020-09-30 | Biochemical advanced treatment unit of BBR sewage |
Country Status (1)
| Country | Link |
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| CN (1) | CN112321064A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003515A (en) * | 2013-02-27 | 2014-08-27 | 上海化学工业区中法水务发展有限公司 | Processing method for removing ammonia nitrogen by biological synergy |
| CN203845914U (en) * | 2014-05-09 | 2014-09-24 | 南京晓庄学院 | Domestic sewage treatment device for teaching |
| CN105152480A (en) * | 2015-09-14 | 2015-12-16 | 柴建中 | Municipal sewage treatment method |
| CN107602161A (en) * | 2016-07-11 | 2018-01-19 | 扬州宇家环保科技有限公司 | A kind of poultry manure fermentating drying all-in-one |
| CN110282820A (en) * | 2019-06-25 | 2019-09-27 | 南京传业环保科技有限公司 | A kind of high stability processing system for trade effluent |
-
2020
- 2020-09-30 CN CN202011062972.5A patent/CN112321064A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003515A (en) * | 2013-02-27 | 2014-08-27 | 上海化学工业区中法水务发展有限公司 | Processing method for removing ammonia nitrogen by biological synergy |
| CN203845914U (en) * | 2014-05-09 | 2014-09-24 | 南京晓庄学院 | Domestic sewage treatment device for teaching |
| CN105152480A (en) * | 2015-09-14 | 2015-12-16 | 柴建中 | Municipal sewage treatment method |
| CN107602161A (en) * | 2016-07-11 | 2018-01-19 | 扬州宇家环保科技有限公司 | A kind of poultry manure fermentating drying all-in-one |
| CN110282820A (en) * | 2019-06-25 | 2019-09-27 | 南京传业环保科技有限公司 | A kind of high stability processing system for trade effluent |
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Application publication date: 20210205 |