CN108773903A - A kind of up-flow AO sewage-treatment plants and its processing method - Google Patents
A kind of up-flow AO sewage-treatment plants and its processing method Download PDFInfo
- Publication number
- CN108773903A CN108773903A CN201810917201.6A CN201810917201A CN108773903A CN 108773903 A CN108773903 A CN 108773903A CN 201810917201 A CN201810917201 A CN 201810917201A CN 108773903 A CN108773903 A CN 108773903A
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- flow
- water
- sewage
- processing pond
- treatment plants
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- 239000010865 sewage Substances 0.000 title claims abstract description 40
- 238000003672 processing method Methods 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 238000012545 processing Methods 0.000 claims abstract description 51
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 238000005276 aerator Methods 0.000 claims abstract description 17
- 239000000498 cooling water Substances 0.000 claims abstract description 16
- 239000002826 coolant Substances 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 230000004044 response Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 239000010802 sludge Substances 0.000 claims description 4
- 238000005273 aeration Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 13
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000005446 dissolved organic matter Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004176 ammonification Methods 0.000 description 1
- 230000001651 autotrophic effect Effects 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000000149 chemical water pollutant Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000009280 upflow anaerobic sludge blanket technology 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
-
- 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
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- 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
- C02F2301/046—Recirculation with an external loop
Landscapes
- 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)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Activated Sludge Processes (AREA)
Abstract
A kind of up-flow AO sewage-treatment plants, including processing pond, water inlet pipe and mud return line, water distributor is equipped in processing pond, water distribution tube opening is towards processing pond bottom, aerator is equipped with above water distributor, aerator passes through piping connection to external wind turbine, overhead is arranged in processing pond above aerator, upper vacancy is equipped with overflow pipe, it is additionally provided in processing pond and cools back flow tube, it cools back flow tube and is equipped with cooling water pump, it cools back flow tube and water distributor is connect with heat exchanger, heat exchanger is connected with cooling body by cooling cycle pipeline, cooling cycle pipeline is equipped with coolant circulation pump, water inlet pipe is connected to mud return line, one end of mud return line is connect with water distributor, the other end connect water inlet pipe with heat exchanger and is equipped with intake pump；The invention also includes up-flow AO sewage water treatment methods.The present invention has floor space small, the few feature of equipment, the sewage disposal especially suitable for lack of space area.
Description
Technical field
The present invention relates to a kind of sewage disposal device and its processing methods, and in particular to a kind of up-flow AO sewage disposals dress
It sets and its processing method.
Background technology
Activated sludge process is most common technique in sewage treatment plant, and A/O techniques are as a kind of modified active sludge, AO
Leading portion anoxic section and back segment aerobic section are cascaded by technique, and A sections of DO are not more than 0.2mg/L, O sections of DO=2~4mg/L.?
The suspended contaminants such as starch, fiber, carbohydrate in sewage and dissolved organic matter have been hydrolyzed to by anoxic section heterotroph
Machine acid, makes larger molecular organics be decomposed into small organic molecule, insoluble organic matter is converted to dissolved organic matter, when these
When product through anaerobic hydrolysis enters aerobic tank progress Aerobic Process for Treatment, the biodegradability of sewage and the efficiency of oxygen can be improved；It is lacking
Oxygen section, by the pollutants such as protein, fat progress ammonification (amino in N or amino acid in organic chain), dissociate heterotroph ammonia
(NH3、NH4+), under sufficient oxygen supply condition, the nitrification of autotrophic bacterium is by NH3-N(NH4+) it is oxidized to NO3-, controlled by flowing back
The ponds A are back to, under anoxic conditions, the denitrification of heterotrophic bacteria is by NO3-It is reduced to molecular nitrogen (N2) C, N, O are completed in life
Cycle in state realizes sewage harmless treatment.As a kind of efficient denitrification technique, in high nitrogenous effluent treatment, A/O techniques
It is widely used.
In the treatment of waste water, it often will appear the case where design water quality is not inconsistent with practical influent quality, cause some processes
It is idle, do not play the effect that play, such as the anaerobism such as UASB, UBF of extensive utilization in the processing of landfill leachate
Reaction tower often results in water quality biochemistry section deficiency with the variation of water quality, and anaerobic tower becomes ornaments.
Invention content
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, provide a kind of up-flow AO sewage disposals dress
It sets and its processing method, it has floor space small, the few feature of equipment, at the sewage especially suitable for lack of space area
Reason.
In order to solve the above technical problems, technical solution proposed by the present invention is：A kind of up-flow AO sewage-treatment plants, packet
Include processing pond, water inlet pipe and mud return line, be equipped with water distributor in the processing pond, water distribution tube opening towards processing pond bottom,
Aerator is equipped with above the water distributor, the aerator passes through piping connection to external wind turbine, the aerator
Overhead is arranged in the processing pond of top, and upper vacancy is equipped with overflow pipe, is additionally provided in the processing pond and cools back flow tube, cool back flow tube
It is equipped with cooling water pump, described to cool back flow tube and water distributor is connect with heat exchanger, the heat exchanger passes through cooling cycle pipe
Road is connected with cooling body, and the cooling cycle pipeline is equipped with coolant circulation pump, and the water inlet pipe is connected to mud return line,
One end of the mud return line is connect with water distributor, and the other end is connect with heat exchanger, and the water inlet pipe is equipped with intake pump.
As a further improvement of the above technical scheme：The water distributor is intake apart from bottom of pond 0.1-0.5m in intake pump
Lower beat to bottom plate of pressure rebound to form a hydraulic mixing, formed muddy water stirring action, prevent sludge settling, when water distributor away from
When being more than 0.5m from bottom of pond, flow is difficult to form the power stirred upwards.
Online detection instrument is additionally provided in the processing pond, the online detection instrument includes MLSS detectors, DO detections
Instrument, pH detectors and/or tank gage, online detection instrument are the foundation of real-time monitoring system control parameter.
Further, the liquid level face 3-8m that the aerator distance is positioned above, this is according to Aeration fan wind pressure
What value was rationally arranged.
Further, described to cool back flow tube and the tie point of processing pond is arranged below at liquid level 0.5-2.5m, it is cooling
Return duct prevents cooling water pump from dallying less than liquid level face using the self-flowing effect of water.
Further, the water inlet pipe is equipped with feed water flow gauge, and the mud return line is equipped with mixing flow of inlet water
Meter, is mixed into water ga(u)ge and water flow is calculated as the foundation of control Inlet and outlet water and reflux ratio.
Further, the wind turbine, cooling water pump, intake pump and coolant circulation pump are both provided with control on the spot and in line traffic controls
Double control system processed can be reasonably selected according to circumstances.
Further, the water inlet pump discharge, cooling water pump outlet and cooling cycle pump discharge are equipped with check-valves, non-return
The setting of valve can prevent said pump from reversal development occur.
Further, the wind turbine is conversion architecture, can real-time regulating air volume.
A kind of up-flow AO sewage water treatment methods, include the following steps：
1) water inlet pipe is converged with mud return line and is then connect with the water distributor positioned at processing pond bottom of pond, water distribution tube opening
Downward, by intake pressure, flow is turned to the bottom of processing pond through rebound, up-flow is upward, is realized to place by flow itself
Manage the stirring of mud mixture in pond；
2) air is passed through to the aerator above water distributor by wind turbine, make to occur in processing pond top it is aerobic,
The alternation response of lower anaerobic；
3) sewage in processing pond after the reaction of the top flow automatically by overflow pipe processing pond enter in next step processing work
Skill, sewage in the middle part of processing pond, which is flow automatically by cooling back flow tube, to be entered back into heat exchanger after cooling water pump, cold through cooling body
But recirculated water is returned through mud return line again after and carries out circular response in water distributor.
Compared with the prior art, the advantages of the present invention are as follows：
1, up-flow AO sewage-treatment plants of the invention are by being arranged the water distributor that Open Side Down, by turning flow extremely
Bottom of pond rebounds, and up-flow is upward, is realized to the stirring action of mud mixture in pond, is reached in a processing pond by flow itself
Not only aerobic reaction can have been realized but also can realize anaerobic reaction have floor space small, the low advantage of equipment input cost；
2, cooling water pump can double as interior reflux pump and hydraulic mixing power in up-flow AO sewage-treatment plants of the invention
Equipment reduces equipment investment, can not only be cooled down to system, but also can realize that denitrification reflux acts on；
3, up-flow AO sewage-treatment plants intake pump of the invention and coolant circulation pump pump can double as water inlet stirring
Device may not need installation mechanical stirring equipment, conducive to equipment investment is reduced；
4, in up-flow AO sewage-treatment plants of the invention various pumps with instrument be provided with On-line funchon, it can be achieved that
Line with two kinds of modes of operation, operating flexibility are higher on the spot；
5, the overflow pipe in up-flow AO sewage-treatment plants of the invention and mud return line are realized by head difference
Water outlet gravity flow is conducive to reduce equipment investment；
6, up-flow AO sewage water treatment methods of the invention are easy to operate, and cost input is less, and floor space is smaller, can be real
It now automatically controls, the few feature of equipment, the sewage disposal especially suitable for lack of space area.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Marginal data：
1, processing pond；2, water inlet pipe；3, mud return line；4, water distributor；5, aerator；6, wind turbine；7, overhead；8, it overflows
Flow tube；9, flow tube is cooled back；10, cooling water pump；11, heat exchanger；12, cooling cycle pipeline；13, cooling body；14, cooling follows
Ring pumps；15, intake pump；16, online detection instrument；17, feed water flow gauge；18, it is mixed into water ga(u)ge.
Specific implementation mode
To facilitate the understanding of the present invention, the present invention is made below in conjunction with Figure of description and preferred embodiment more complete
Face meticulously describes, but the protection scope of the present invention is not limited to the following specific embodiments.
As shown in Figure 1, a kind of up-flow AO sewage-treatment plants, including processing pond 1, water inlet pipe 2 and mud return line 3,
Water distributor 4 is equipped in processing pond 1, the opening of water distributor 4 is equipped with aerator 5, aeration towards 1 bottom of processing pond, 4 top of water distributor
Device 5 is arranged overhead 7, is equipped with and is overflow at overhead 7 by piping connection to external wind turbine 6, the processing pond 1 of 5 top of aerator
Flow tube 8 is additionally provided in processing pond 1 and cools back flow tube 9, cools back flow tube 9 and is equipped with cooling water pump 10, cools back flow tube 9 and cloth
Water pipe 4 is connect with heat exchanger 11, and heat exchanger 11 is connected with cooling body 13, cooling cycle pipeline by cooling cycle pipeline 12
12 are equipped with coolant circulation pump 14, and water inlet pipe 2 is connected to mud return line 3, and one end of mud return line 3 is connect with water distributor 4,
The other end is connect with heat exchanger 11, and water inlet pipe 2 is equipped with intake pump 15.
In the present embodiment, water distributor 4 is apart from bottom of pond 0.3m.
In the present embodiment, online detection instrument 16 is additionally provided in processing pond 1, online detection instrument 16 is detected including MLSS
Instrument, DO detectors, pH detectors and/or tank gage.
In the present embodiment, liquid level face 3m that 5 distance of aerator is positioned above.
In the present embodiment, cools back flow tube 9 and the tie point of processing pond 1 is arranged below at liquid level 2.0m.
In the present embodiment, water inlet pipe 2 is equipped with feed water flow gauge 17, and mud return line 3 is equipped with and is mixed into water ga(u)ge
18。
In the present embodiment, wind turbine 6, cooling water pump 10, intake pump 15 and coolant circulation pump 14 be both provided on the spot control with
On-line Control double control system.
In the present embodiment, the outlet of intake pump 15, the outlet of cooling water pump 10 and the outlet of coolant circulation pump 14 are equipped with check-valves.
In the present embodiment, wind turbine 6 is conversion architecture.
A kind of up-flow AO sewage water treatment methods, include the following steps：
1) water inlet pipe 2 is converged with mud return line 3 and is then connect with the water distributor 4 positioned at 1 bottom of pond of processing pond, water distributor
4 is opening down, by intake pressure, turns flow to the bottom of processing pond 1 through rebound, up-flow is upward, real by flow itself
Now to the stirring of mud mixture in processing pond 1；
2) air is passed through to the aerator 5 above water distributor 4 by wind turbine 6, it is good to make to occur top in processing pond 1
The alternation response of oxygen, lower anaerobic；
3) sewage in processing pond 1 after the reaction of the top is flow automatically by overflow pipe 8 processing pond 1 into processing in next step
The sewage of technique, 1 middle part of processing pond is entered back into from after flowing into cooling water pump 10 in heat exchanger 11 by cooling back flow tube 9, through cold
But recirculated water is returned through mud return line 3 after cooling down and carries out circular response in water distributor 4 by mechanism 13 again.
Claims (10)
1. a kind of up-flow AO sewage-treatment plants, including processing pond (1), water inlet pipe (2) and mud return line (3), feature
It is：Water distributor (4) is equipped in the processing pond (1), water distributor (4) is open towards processing pond (1) bottom, the water distributor
(4) top is equipped with aerator (5), and the aerator (5) passes through piping connection to external wind turbine (6), the aeration dress
Processing pond (1) setting overhead (7) above (5) is set, overflow pipe (8) is equipped at overhead (7), is additionally provided on the processing pond (1)
Flow tube (9) is cooled back, flow tube (9) is cooled back and is equipped with cooling water pump (10), it is described to cool back flow tube (9) and water distributor (4)
It is connect with heat exchanger (11), the heat exchanger (11) is connected with cooling body (13) by cooling cycle pipeline (12), described cold
But circulating line (12) is equipped with coolant circulation pump (14), and the water inlet pipe (2) is connected to mud return line (3), the sludge
One end of return duct (3) is connect with water distributor (4), and the other end is connect with heat exchanger (11), and the water inlet pipe (2) is equipped with water inlet
It pumps (15).
2. up-flow AO sewage-treatment plants according to claim 1, it is characterised in that：The water distributor (4) is apart from pond
Bottom 0.1-0.5m.
3. up-flow AO sewage-treatment plants according to claim 1, it is characterised in that：It is also set in the processing pond (1)
Have an online detection instrument (16), the online detection instrument (16) include MLSS detectors, DO detectors, pH detectors and/or
Tank gage.
4. up-flow AO sewage-treatment plants according to claim 1, it is characterised in that：Aerator (5) distance
The liquid level face 3-8m being positioned above.
5. up-flow AO sewage-treatment plants according to claim 1, it is characterised in that：It is described cool back flow tube (9) with
The tie point of processing pond (1) is arranged below at liquid level 0.5-2.5m.
6. up-flow AO sewage-treatment plants according to any one of claims 1-5, it is characterised in that：The water inlet pipe
(2) it is equipped with feed water flow gauge (17), the mud return line (3) is equipped with and is mixed into water ga(u)ge (18).
7. up-flow AO sewage-treatment plants according to any one of claims 1-5, it is characterised in that：The wind turbine
(6), cooling water pump (10), intake pump (15) and coolant circulation pump (14) are both provided with control on the spot and On-line Control double control system
System.
8. up-flow AO sewage-treatment plants according to any one of claims 1-5, it is characterised in that：The intake pump
(15) outlet, cooling water pump (10) outlet and coolant circulation pump (14) outlet are equipped with check-valves.
9. up-flow AO sewage-treatment plants according to any one of claims 1-5, it is characterised in that：The wind turbine
(6) it is conversion architecture.
10. a kind of processing method using the up-flow AO sewage-treatment plants described in any one of claim 1-9, feature
It is, includes the following steps：
1) water inlet pipe (2) is converged with mud return line (3) and is then connect with the water distributor (4) positioned at processing pond (1) bottom of pond, cloth
Water pipe (4) is opening down, by intake pressure, turns flow to the bottom of processing pond (1) through rebound, up-flow is upward, passes through water
Flow the stirring itself realized to mud mixture in processing pond (1)；
2) air is passed through to the aerator (5) above water distributor (4) by wind turbine (6), made in processing pond (1) in appearance
Portion is aerobic, lower anaerobic alternation response；
3) sewage in processing pond (1) after the reaction of the top is flow automatically by overflow pipe (8) at processing pond (1) entrance in next step
Science and engineering skill, the sewage in the middle part of processing pond (1) enter back into heat exchanger by cooling back flow tube (9) from after flowing into cooling water pump (10)
(11) in, recirculated water is returned through mud return line (3) again after cooling body (13) is cooling and carries out recycling in water distributor (4) instead
It answers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917201.6A CN108773903A (en) | 2018-08-13 | 2018-08-13 | A kind of up-flow AO sewage-treatment plants and its processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917201.6A CN108773903A (en) | 2018-08-13 | 2018-08-13 | A kind of up-flow AO sewage-treatment plants and its processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108773903A true CN108773903A (en) | 2018-11-09 |
Family
ID=64029347
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810917201.6A Pending CN108773903A (en) | 2018-08-13 | 2018-08-13 | A kind of up-flow AO sewage-treatment plants and its processing method |
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|---|---|---|---|---|
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| CN103936229A (en) * | 2014-04-28 | 2014-07-23 | 华南理工大学 | Municipal sewage improved A2/O enhanced denitrification and dephosphorization treatment device and process |
| CN106946355A (en) * | 2017-05-23 | 2017-07-14 | 上海明奥环保科技有限公司 | A kind of jet-flow aeration formula A/O integrated sewage treating apparatus and its sewage treatment process |
| CN106966493A (en) * | 2017-03-13 | 2017-07-21 | 中山市知科应用科技研究有限公司 | A kind of reactor for hydrolysis and acidification |
| CN208700689U (en) * | 2018-08-13 | 2019-04-05 | 湖南北控威保特环境科技股份有限公司 | A kind of up-flow AO sewage-treatment plant |
-
2018
- 2018-08-13 CN CN201810917201.6A patent/CN108773903A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1807282A (en) * | 2003-09-29 | 2006-07-26 | 甘肃金桥给水排水设计与工程有限公司 | Sewage treatment method and filtering pool |
| CN103204587A (en) * | 2013-04-18 | 2013-07-17 | 天津清华德人环境工程有限公司 | Anaerobic-aerobic alternative type granule sludge treatment sewage device and method |
| CN103936229A (en) * | 2014-04-28 | 2014-07-23 | 华南理工大学 | Municipal sewage improved A2/O enhanced denitrification and dephosphorization treatment device and process |
| CN106966493A (en) * | 2017-03-13 | 2017-07-21 | 中山市知科应用科技研究有限公司 | A kind of reactor for hydrolysis and acidification |
| CN106946355A (en) * | 2017-05-23 | 2017-07-14 | 上海明奥环保科技有限公司 | A kind of jet-flow aeration formula A/O integrated sewage treating apparatus and its sewage treatment process |
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Application publication date: 20181109 |
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