CN101062810B - Biological cycle moving bed sewage treatment system and method thereof - Google Patents
Biological cycle moving bed sewage treatment system and method thereof Download PDFInfo
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- CN101062810B CN101062810B CN2007102005033A CN200710200503A CN101062810B CN 101062810 B CN101062810 B CN 101062810B CN 2007102005033 A CN2007102005033 A CN 2007102005033A CN 200710200503 A CN200710200503 A CN 200710200503A CN 101062810 B CN101062810 B CN 101062810B
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses a biological cycle moving bed sewage disposal system and method, which comprises the following steps: entering the raw water into anoxybiotic tank and anaerobic tank with pump from raw water tank; treating; feeding into the cycle moving bed reactor to proceed aeration oxygenation reaction; making the inner section in the tank body of current, inert support filler and bubble be directed with up-and-down cycle splitter, separating splitter and tailboard; forming circulatory flow; reacting the microbe of the current and the inert support filler completely; discharging into desilter; refluxing the depositing sludge in the bottom of the desilter into the anoxia tank; discharging the clear water in the upper of the desilter from the exhaust pipe; refluxing the treated water in the reactor into the anoxia tank through internal reflux pipe. This invention avoids the stratification, which can decrease the operating expense.
Description
(1) technical field
The present invention relates to a kind of Sewage treatment systems and method thereof, particularly a kind of organism fluidization bed waste water treatment system and method thereof.
(2) background technology
Traditional biological fluidized-bed Sewage treatment systems is linked in sequence by former pond, anoxic pond, anaerobic pond, fluidized-bed reactor, settling tank and forms.Circulated moving bed reactor is a rectangle form pool body for the sewage reaction, and the pond body is connected with aerator.Following defective is arranged in operational process: the microbial film meeting progressive additive in the biological fluidized bed, carrier granule lighten gradually, thereby demixing phenomenon occurs in fluidized-bed, need the special demoulding device of configuration, have so just increased working cost greatly.What is more, and the conventional flow fluidized bed reactor is after operation for some time, because blocked up biofilm detachment can cause the interim effluent quality variation of organism fluidization bed waste water treatment system, efficient step-down, the consequence that the fluid mixed performance is bad.
Traditional biological fluidized-bed Sewage treatment systems has different sortses such as BAF, oxidation ditch.
The characteristics of BAF: need not second pond, the pond body is compact, and the electromechanical equipment amount is big, and automatic instrument(s) is many, take up an area of lessly, gross investment is bigger, working cost height, head loss: about 3～3.5, do not need mud to reflux, aeration rate is bigger, and power consumption is bigger, and pharmaceutical quantities is slightly little.Sludge output is bigger, the mud poor stability, and no sludge bulking: immeasurable variation: be subjected to the influence of filtration velocity that certain limitation is arranged, reason efficient height, but backwash meeting regularly causes the processing efficiency less stable; Filler runs off easily, and wear resistance is relatively poor, and need to carry out the two stage biological filter tank in case of necessity and handle, computer-aided traffic control degree height, routine maintenance and tour maintenance workload are bigger, make an inspection tour simple overhaul: regularly need overhaul every year, may influence effluent quality.
The oxidation Ditch Technology characteristics are as follows:
1, water-in and water-out continuously can be resisted impact load.
2, denitrification effect is removed, and phosphor-removing effect is poor.
3, processing power is low: (its specific surface area is little: be lower than 100m
2/ m
3, MLSS concentration is low: 2000～3000mg/L;
4, BOD loading is little: 0.3～0.9Kg/m
3.d)
5, return sludge ratio is big: 100%, and the return-flow system investment is big.
6, hydraulic detention time is long: 15.5 hours;
7, adopt surface aeration, be provided with the plate-spinning aerator, the plate-spinning branch is arranged; Energy consumption is higher.
8, current consumption is bigger, and working cost is higher.
(3) summary of the invention
The purpose of this invention is to provide a kind of biological cycle moving bed sewage treatment system and method thereof, solve mainly that the inherent microbial film of traditional biological fluidized-bed thickens, carrier granule demixing phenomenon occurs after lightening, special demoulding device can significantly increase the problem of working cost; Blocked up the coming off of microbial film solve the traditional biological fluidized-bed reactor simultaneously after operation for some time, owing to can be caused interim effluent quality variation, efficient step-down, the technical problem that the fluid mixed performance is bad.
The object of the present invention is achieved like this: this circulated moving bed reactor is a rectangle form pool body for the sewage reaction, and the pond body is connected with aerator, and there is an overflow weir outer, body rear wall top, pond, it is characterized in that:
(1), is distributed with the inert support filler that supplies attached growth of microorganisms in the body of pond;
(2), the aeration tube end of aerator is connected with aeration head, aeration head places the bottom of pond body near antetheca;
(3), the middle part is fixed with separately the flow deflector of circulation up and down successively, isolates flow deflector and rear deflector door from A-P in the body of pond, above-mentioned three baffle plates are rectangle, every baffle plate is across the pond body, its two longitudinal edge is separately fixed on the pond body inner side-wall of two correspondences, middle part in the body of pond is divided into the up-flow district and falls the stream district, wherein:
A, circulate between the top of the upper end of flow deflector and pond up and down, all leave the circulating water flow passage between at the bottom of lower end and the pond;
B, to isolate flow deflector longer than the flow deflector that circulates up and down, also leaves the circulating water flow passage between between push up in its upper end and pond, at the bottom of lower end and the pond, this circulating water flow passage narrower than among the above-mentioned a;
The upper end of c, rear deflector door exceeds the water surface, leaves the circulating water flow passage between at the bottom of lower end and the pond.
Body antetheca upper end, above-mentioned pond is equipped with the anterior angle circulating baffle plate, and there is preceding fillet the angle between the body antetheca of at the bottom of the pond and pond, and there is back fillet the angle between the body rear wall of at the bottom of the pond and pond.
Above-mentioned pond body length is 5～8 meters, vertically arranges arbitrarily.
A kind of biological cycle moving bed sewage treatment system of using above-mentioned circulated moving bed reactor, it is characterized in that: be linked in sequence and form by former pond, anoxic pond, anaerobic pond, circulated moving bed reactor, settling tank, circulated moving bed reactor is connected with aerator, the settling tank bottom connects mud return line, the mud return line outlet is positioned at above the anoxic pond, settling tank top is connected with rising pipe, circulated moving bed reactor water outlet connects the internal reflux pipe, and the water outlet of internal reflux pipe is positioned at above the anoxic pond.
A kind of biological cycle moving bed sewage water treatment method of using above-mentioned biological cycle moving bed sewage treatment system, it is characterized in that flow process is as follows: former water is handled with pump input anoxic pond and anaerobic pond from former pond, be transfused to circulated moving bed reactor then and carry out the aeration aerating reaction, current, inert support filler and bubble are subjected to the flow deflector that circulates up and down respectively in body inside, pond, isolate flow deflector, the water conservancy diversion of rear deflector door, formation circulates, after the abundant contact reacts of the microorganism of current and inert support filling surface, enter in the settling tank, the precipitating sludge of settling tank bottom is back in the anoxic pond through mud return line, the clear water on settling tank top is discharged from rising pipe, and a part is back in the anoxic pond through the internal reflux pipe through the water of circulated moving bed reactor for treatment.
Above-mentioned inert support filler is that diameter is 5～10mm, the particle be made up of shoddy, weighting agent, tackiness agent.
Weighting agent in the above-mentioned inert support filler is kaolin, clay or wilkinite.
Tackiness agent in the above-mentioned inert support filler is urethane, vinylester resin, acrylic or methacrylic acid alkane ester monomer.
The proportioning that above-mentioned inert support filler is calculated by weight is as follows:
100 parts of shoddies;
20～30 parts of urethane;
10～20 parts of kaolin.
The present invention compared with prior art has following characteristics and beneficial effect:
The present invention is the improvement to the traditional biological fluidized-bed process.New Cycle biological moving bed (be called for short BFMD) is fast at the rate of mass transfer that has kept traditional fluidisation bed accessory to have, sludge concentration big, in the organic loading advantages of higher, have following new characteristics:
1), of the present invention rational in infrastructure.Sewage is transfused to from former pond and carries out denitrification the anoxic pond and handle, and anaerobic pond provides mud to discharge the condition of phosphorus.The fillet of circulating biological moving-bed pond body is configured with and is beneficial to current and carrier filler evenly circulates, and prevents the carrier filler deposition.
2), the fluid mixed performance is good, can control microbial film thickness.Circulating biological moving-bed pond body is built-in with the flow deflector that circulates up and down, isolates flow deflector and rear deflector door, and above-mentioned baffle plate will be divided into the up-flow district and fall the stream district in the body of pond.In the up-flow district, carry out aeration aerating, because the disturbance and the up-flow district of air-flow and fall the existence of density difference between the stream district, make waste water and carrier filler in the up-flow district with fall between the stream district and circulate.Carrier granule is subjected in the full cycle biological moving bed reactor shearing and frictional force are more even, can not occur therefore that traditional biological fluidized-bed internal cause microbial film thickens, carrier granule lightens and in bed stratified phenomenon.While, blocked up microbial film can come off voluntarily, can reach the purpose of control thickness, does not need special demoulding device owing to the interior hydraulic shear of circulating biological moving-burden bed reactor, friction are comparatively violent.
3), intravital rear deflector door in circulating biological moving-bed pond and overflow weir can prevent that carrier filler runs off.Microorganism growth belongs to immobilized microorganism at the filling surface of rough porous, can not run off, so operational management is convenient and simple.
4), the inert support filling surface among the present invention has certain roughness, biologically stable is good, fluidizing performance is good, tack is good, the surface biological bacterium is many, can increase microbial numbers in the reactive tank, organic removal rate is higher, with low cost.Inert support of the present invention is for to form the particle that diameter is 5～10mm by shoddy, weighting agent, tackiness agent.Its specific surface area is more much bigger than the specific surface area of conventional carrier, surpasses 3500m
2/ m
3, and have good elasticity, wear-resistant and chemical stability, because its density is less, so the energy consumption of circulating biological moving-burden bed reactor is less.
5), circulating biological moving-burden bed reactor processing efficiency height, compact construction, floor space only is 1/4～1/8 of a legacy equipment, initial cost saves 20%～30%, amplification design is more or less freely.
6), the transfer efficiency height of oxygen.The present invention forms adverse current at when operation water inlet current and aeration gas flow in the circulating biological moving-burden bed reactor, increased gas-water contact area; And carrier filler is under the inner because up-flow district of circulating biological moving-burden bed reactor and the effect of falling stream district's density difference and special fluidized-bed internal structure in the body of pond, and formation circulates, and coefficient of oxygen utilization is improved 10%～15%, helps the transfer of oxygen.
7), the shock-resistant ability of inert support filler among the present invention is strong, no sludge bulking problem.Compare with general carrier, load impact is had stronger adaptability.The common decomposing pollutant matter of microorganism in the mixed solution and biofilm microorganisms makes the BOD treatment capacity reach 5～16kg/ (m
3D), be more than 8 times of Wastewater Treated by Activated Sludge Process amount.Granular inert support filler among the present invention has inexpensive, the wear-resisting and resistance to oxidation of light weight and is easy to biofilm and the characteristics of microorganism growth, in contact oxidation method, moving-burden bed reactor and biological fluidized bed.
8), water treatment efficiency height.The filling carrier operation scheme of fierce collision has mutually overcome traditional reactor after operation for some time in the circulating biological moving-burden bed reactor, because the shortcoming of the blocked up interim effluent quality variation that causes of coming off of microbial film.And the mode of this fierce collision is very beneficial for improving the transfer rate of pollutent on microbial film in the water body, helps improving processing efficiency.
9), ammonia nitrogen removal efficient height.Particulate filler has huge specific surface area, and the high-activity biological film that the various carbonization bacterium that growing on it, ammonifying bacteria and nitrifier are formed has the effect of good oxidative degradation and adsorption filtration water pollutant, and bigger microorganism living space can be provided.Filling surface provides good set life and the place of breeding for nitrobacteria, this has improved the sludge retention time of nitrobacteria in reaction system on the one hand, on the other hand, because nitrobacteria is easy to anchor at the characteristic of filling surface, also helps improving the nitrobacteria per-cent in the whole reaction system.In the general activated sludge process, nitrifier only accounts for 8% of MLVSS, and in inner loop fluidized bed reactor in the active sludge system, nitrifier can account for 20% of MLVSS.Be greatly improved from this respect ammonia nitrogen removal efficient.Because in the middle of the moving-bed biofilm system, both can possess the same of higher MLSS value and advance, can effectively possess higher nitrifier concentration again.Therefore, this system's water outlet except conventional indexs such as COD are low, its water outlet NH
3-N concentration can be less than 2mg/L, even less than 1mg/L.That is to say for middle water reuse, adopt the moving-bed biofilm treatment process, can no longer carry out three grades of biological treatments.
The comparison sheet of the present invention and BAF is as follows:
The comparison sheet of the present invention and conventional oxidation ditch technology is as follows:
Actual beneficial effect of the present invention is by the comprehensive test digital proof of following engineering test and operation:
| Stage | Project | Water inlet | Water outlet | Clearance |
| Design objective | COD Cr | 450mg/l | 120mg/l | 75％ |
| Design objective | BOD 5 | 250mg/l | 60mg/l | 76％ |
| Design objective | SS | 200mg/l | 30mg/l | 85％ |
| Design objective | NH 3-N | 45mg/l | 15mg/l | 70％ |
| Design objective | N-P | 4mg/l | 1mg/l | 75％ |
| The integrated operation index | COD Cr | 550mg/l | 60mg/l | 90％ |
| The integrated operation index | BOD 5 | 290mg/l | 30mg/l | 90％ |
| The integrated operation index | SS | 280mg/l | 10mg/l | 96％ |
| The integrated operation index | NH 3-N | 70mg/l | 10mg/l | 86％ |
| Stage | Project | Water inlet | Water outlet | Clearance |
| The integrated operation index | N-P | 4mg/l | 1mg/l | 75％ |
Adopt the physicochemical property data of carrier filler to see the following form in the benzene invention:
(4) description of drawings
Fig. 1 is the structural representation of the circulated moving bed reactor embodiment of the present invention.
Fig. 2 is structure and the schematic flow sheet of biological cycle moving bed sewage treatment system embodiment of the present invention.
The former pond of 1-, 2-anoxic pond, 3-anaerobic pond, the circulated moving bed reactor of 4-, 5-settling tank, 6-internal reflux pipe, 7-mud return line, 8-rising pipe, 9-pump, 10-inert support filler, 11-aerator.
Circulate up and down flow deflector, 45-of 40-pond body, 41-aeration tube, 42-aeration head, the last anterior angle circulating baffle plate of 43-, 44-isolated fillet before fillet behind flow deflector, 46-rear deflector door, the 47-, the 48-, 49-overflow weir.
(5) embodiment
Embodiment is referring to shown in Figure 1, and this circulated moving bed reactor is a rectangle form pool body for the sewage reaction, and pond body 40 is connected with aerator 11, and there is an overflow weir 49 outer, body rear wall top, pond, it is characterized in that:
(1), is distributed with the inert support filler 10 that supplies attached growth of microorganisms in the pond body 40;
(2), aeration tube 41 ends of aerator are connected with aeration head 42, aeration head places the bottom of pond body near antetheca;
(3), the middle part is fixed with separately the flow deflector of circulation up and down 44 successively, isolates flow deflector 45 and rear deflector door 46 from A-P in the body of pond, above-mentioned three baffle plates are rectangle, every baffle plate is across the pond body, its two longitudinal edge is separately fixed on the pond body inner side-wall of two correspondences, middle part in the body of pond is divided into the up-flow district and falls the stream district, wherein:
A, circulate between the top of the upper end of flow deflector 44 and pond up and down, all leave the circulating water flow passage between at the bottom of lower end and the pond;
B, to isolate flow deflector 45 longer than the flow deflector that circulates up and down, also leaves the circulating water flow passage between between push up in its upper end and pond, at the bottom of lower end and the pond, this circulating water flow passage narrower than among the above-mentioned a;
The upper end of c, rear deflector door 46 exceeds the water surface, leaves the circulating water flow passage between at the bottom of lower end and the pond.
Body antetheca upper end, above-mentioned pond is equipped with anterior angle circulating baffle plate 43, and there is preceding fillet 47 angle between the body antetheca of at the bottom of the pond and pond, and there is back fillet 48 angle between the body rear wall of at the bottom of the pond and pond.
Above-mentioned pond body length is 5～8 meters, vertically arranges arbitrarily.
Referring to Fig. 2, a kind of biological cycle moving bed sewage treatment system of using above-mentioned circulated moving bed reactor, it is characterized in that: be linked in sequence and form by former pond 1, anoxic pond 2, anaerobic pond 3, circulated moving bed reactor 4, settling tank 5, circulated moving bed reactor 4 is connected with aerator 11, the settling tank bottom connects mud return line 7, the mud return line outlet is positioned at above the anoxic pond, settling tank top is connected with rising pipe 8, circulated moving bed reactor water outlet connects internal reflux pipe 6, and the water outlet of internal reflux pipe 6 is positioned at above the anoxic pond.
A kind of biological cycle moving bed sewage water treatment method of using above-mentioned biological cycle moving bed sewage treatment system, it is characterized in that flow process is as follows: former water is handled with pump 9 input anoxic pond 2 and anaerobic pond 3 from former pond 1, be transfused to circulated moving bed reactor 4 then and carry out the aeration aerating reaction, current, inert support filler and bubble are subjected to the flow deflector 44 that circulates up and down respectively in body inside, pond, isolate flow deflector 45, the water conservancy diversion of rear deflector door 46, formation circulates, after the abundant contact reacts of the microorganism of current and inert support filling surface, enter in the settling tank 5, the precipitating sludge of settling tank bottom is back in the anoxic pond through mud return line 7, the clear water on settling tank top is discharged from rising pipe 8, and the water that a part is handled through circulated moving bed reactor 4 is back in the anoxic pond 2 through internal reflux pipe 6.
Above-mentioned inert support filler is that diameter is 5～10mm, the particle be made up of shoddy, weighting agent, tackiness agent.Weighting agent in the inert support filler can be selected kaolin, clay or wilkinite.Tackiness agent can be urethane, vinylester resin, acrylic or methacrylic acid alkane ester monomer.
The proportioning embodiment one that above-mentioned inert support filler is calculated by weight is as follows:
100 parts of shoddies;
20～30 parts of urethane;
10～20 parts of kaolin.
The proportioning embodiment two that above-mentioned inert support filler is calculated by weight is as follows:
100 parts of shoddies;
25 parts of urethane;
15 parts of kaolin.
Claims (7)
1. a circulated moving bed reactor is a rectangle form pool body for the sewage reaction, and the pond body is connected with aerator, and there is an overflow weir outer, body rear wall top, pond, it is characterized in that:
(1), is distributed with the inert support filler that supplies attached growth of microorganisms in the body of pond;
(2), the aeration tube end of aerator is connected with aeration head, aeration head places the bottom of pond body near antetheca;
(3), the middle part is fixed with separately the flow deflector of circulation up and down successively, isolates flow deflector and rear deflector door from A-P in the body of pond, above-mentioned three baffle plates are rectangle, every baffle plate is across the pond body, its two longitudinal edge is separately fixed on the pond body inner side-wall of two correspondences, middle part in the body of pond is divided into the up-flow district and falls the stream district, wherein:
A, circulate between the top of the upper end of flow deflector and pond up and down, all leave the circulating water flow passage between at the bottom of lower end and the pond;
B, to isolate flow deflector longer than the flow deflector that circulates up and down, also all leaves the circulating water flow passage between between push up in its upper end and pond, at the bottom of lower end and the pond, this circulating water flow passage narrower than among the above-mentioned a;
The upper end of c, rear deflector door exceeds the water surface, leaves the circulating water flow passage between at the bottom of lower end and the pond;
Body antetheca upper end, above-mentioned pond is equipped with the anterior angle circulating baffle plate, and there is preceding fillet the angle between the body antetheca of at the bottom of the pond and pond, and there is back fillet the angle between the body rear wall of at the bottom of the pond and pond.
2. an application rights requires the biological cycle moving bed waste disposal plant of 1 described circulated moving bed reactor, it is characterized in that: be linked in sequence and form by former pond, anoxic pond, anaerobic pond, circulated moving bed reactor, settling tank, circulated moving bed reactor is connected with aerator, the settling tank bottom connects mud return line, the mud return line outlet is positioned at above the anoxic pond, settling tank top is connected with rising pipe, circulated moving bed reactor water outlet connects the internal reflux pipe, and the water outlet of internal reflux pipe is positioned at above the anoxic pond.
3. biological cycle moving bed waste disposal plant according to claim 2 is characterized in that: above-mentioned pond body length is 5～8 meters, vertically arranges arbitrarily.
4. an application rights requires the biological cycle moving bed sewage water treatment method of 2 biological cycle moving bed waste disposal plants, it is characterized in that flow process is as follows: former water is handled with pump input anoxic pond and anaerobic pond from former pond, be transfused to circulated moving bed reactor then and carry out the aeration aerating reaction, current, inert support filler and bubble are subjected to the flow deflector that circulates up and down respectively in body inside, pond, isolate flow deflector, the water conservancy diversion of rear deflector door, formation circulates, after the abundant contact reacts of the microorganism of current and inert support filling surface, enter in the settling tank, the precipitating sludge of settling tank bottom is back in the anoxic pond through mud return line, the clear water on settling tank top is discharged from rising pipe, and a part is back in the anoxic pond through the internal reflux pipe through the water of circulated moving bed reactor for treatment;
Above-mentioned inert support filler is that diameter is 5～10mm, the particle be made up of shoddy, weighting agent, tackiness agent.
5. biological cycle moving bed sewage water treatment method according to claim 4 is characterized in that: the weighting agent in the above-mentioned inert support filler is kaolin, clay or wilkinite.
6. biological cycle moving bed sewage water treatment method according to claim 4 is characterized in that: the tackiness agent in the above-mentioned inert support filler is urethane, vinylester resin, acrylic or methacrylic acid alkane ester monomer.
7. biological cycle moving bed sewage water treatment method according to claim 4 is characterized in that: the proportioning that above-mentioned inert support filler is calculated by weight is as follows:
100 parts of shoddies;
20～30 parts of urethane;
10～20 parts of kaolin.
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| CN2007102005033A CN101062810B (en) | 2007-04-24 | 2007-04-24 | Biological cycle moving bed sewage treatment system and method thereof |
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| CN2007102005033A CN101062810B (en) | 2007-04-24 | 2007-04-24 | Biological cycle moving bed sewage treatment system and method thereof |
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| CN101062810B true CN101062810B (en) | 2010-06-02 |
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| CN101962252B (en) * | 2010-09-16 | 2012-07-11 | 天津市农业资源与环境研究所 | Local circulating oxygen supply biomembrane reacting device |
| CN102557199B (en) * | 2010-12-14 | 2014-12-03 | 上海洗霸科技股份有限公司 | Micro-electrolytic reactor |
| CN103073108A (en) * | 2011-10-25 | 2013-05-01 | 苏州嘉净环保科技股份有限公司 | Moving bed type purification tank |
| CN102701444B (en) * | 2012-06-08 | 2013-09-25 | 李卓娅 | Biological fermentation fixed bed reactor, and method for cleaning fixed bed carriers of biological fermentation fixed bed reactor |
| CN102774961B (en) * | 2012-07-11 | 2013-07-31 | 浙江工业大学 | Multistage anaerobic wastewater treatment method and special device |
| CN103466787A (en) * | 2013-09-17 | 2013-12-25 | 西安绿标水环境科技有限公司 | Combined aeration moving bed bio-membrane reactor |
| CN103936140A (en) * | 2014-04-15 | 2014-07-23 | 同济大学 | MBBR pretreatment method and system for high-ammonia nitrogen micro-polluted raw water |
| CN106006960A (en) * | 2016-07-18 | 2016-10-12 | 广德清源水处理设备有限公司 | Anoxic baffled reactor and operation method thereof |
| CN107311405A (en) * | 2017-08-18 | 2017-11-03 | 北京博大水务有限公司 | Urban sewage treatment system and technique |
| CN108178438A (en) * | 2017-12-29 | 2018-06-19 | 冯湛钧 | A kind of rural domestic sewage treatment system and purification method |
| CN107935171A (en) * | 2018-01-09 | 2018-04-20 | 中冶赛迪工程技术股份有限公司 | Pulling flow type moving bed biofilm reactor |
| CN108911124B (en) * | 2018-07-18 | 2023-08-18 | 杭州师范大学 | Integrated autotrophic denitrification reactor with self-interception anaerobic ammonia oxidizing bacteria function |
| CN110002688B (en) * | 2019-04-30 | 2021-11-30 | 倍杰特集团股份有限公司 | Efficient label lifting system |
| CN111995193A (en) * | 2020-09-07 | 2020-11-27 | 贵州省材料产业技术研究院 | Integrated intelligent device and method for advanced treatment of medical wastewater |
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