CN108328736A - A kind of modified form A for intensified denitrification and dephosphorization2/ O processing systems - Google Patents
A kind of modified form A for intensified denitrification and dephosphorization2/ O processing systems Download PDFInfo
- Publication number
- CN108328736A CN108328736A CN201810340610.4A CN201810340610A CN108328736A CN 108328736 A CN108328736 A CN 108328736A CN 201810340610 A CN201810340610 A CN 201810340610A CN 108328736 A CN108328736 A CN 108328736A
- Authority
- CN
- China
- Prior art keywords
- oxidation ditch
- phegma
- pipe
- branch pipe
- aeration
- 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
Classifications
-
- 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
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/163—Nitrates
-
- 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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (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)
Abstract
The invention discloses a kind of modified form A for intensified denitrification and dephosphorization2/ O processing systems, including non-aeration oxidation ditch, aerated oxidation ditch and secondary settling tank, one end of the non-aeration oxidation ditch is connected with wastewater inlet pipe, and non-aeration oxidation ditch, aerated oxidation ditch passes sequentially through pipeline with secondary settling tank and is connected, and reflux liquid pipe is connected between aerated oxidation ditch and non-aeration oxidation ditch, mud return line is installed on secondary settling tank, outfall sewer and sludge carrier pipe, the other end of mud return line is connected with non-aeration oxidation ditch, the dissolved oxygen in phegma and returned sludge in the present invention in non-aeration oxidation ditch is rapidly diluted, alleviate adverse effect of the dissolved oxygen to denitrogenation dephosphorizing, improve the removal effect and utilization of carbon source rate of total nitrogen, sludge in waste water all experienced complete anaerobism, anoxic, aerobic process, be conducive to the abundant suction phosphorus of sludge, improve total phosphorus removal effect.
Description
Technical field
The present invention relates to sewage disposal system technical field more particularly to a kind of modified forms for intensified denitrification and dephosphorization
A2/ O processing systems.
Background technology
A2/ O techniques, also referred to as A-A-O techniques are English anaerobic-Anoxic-Oxic (anaerobic- anoxic- oxic)
One alphabetical abbreviation.The technique is in the 1970s, one of Air Prod ＆ Chem of U.S. invention can synchronize
The sewage treatment process of denitrogenation dephosphorizing.The technique is composed in series by anaerobic zone, anoxic zone and aerobic zone, and aerobic zone part is gone out
Water is back to anoxic zone, can be carried out at the same time the degradation of denitrogenation, dephosphorization and organic matter.Oxidation ditch is in the continuous of closing irrigation canals and ditches shape
Circulating reaction tank, due to special construction, oxidation ditch, which is provided simultaneously with, to be thoroughly mixed and two kinds of characteristics of fluid state of pulling flow type.Sewage into
One-way flow is carried out after entering oxidation ditch, however, mixed liquor will be completed repeatedly to recycle in oxidation ditch, simultaneously because flow velocity is very fast,
Water inlet can be diluted quickly by a large amount of mixed liquor in gallery, therefore again it is considered that fluidised form and process kinetics in oxidation ditch are special
Sign is to be thoroughly mixed formula.A2/ O techniques and oxidation ditch are the common technical matters of urban wastewater treatment firm.
A2/ O techniques the problem is that：1. sludge denitrification in secondary settling tank in order to prevent, in usual aerobic zone water outlet
Need to maintain certain dissolved oxygen concentration, this can cause returned sludge and backflow mixed liquor there are certain dissolved oxygen, influence to detest
The anaerobic phosphorus release in oxygen area and the denitrification denitrogenation of anoxic zone.2. nitrate present in returned sludge also can be to the anaerobism of anaerobic zone
Phosphorus is released to have an adverse effect.3. anoxic zone is located at after anaerobic zone, denitrification denitrogenation occupy minus advantage in carbon source distribution, because
And affect the denitrification effect of system.
Invention content
The purpose of the present invention is to solve disadvantages existing in the prior art, and the one kind proposed is removed for strengthened denitrification
The modified form A of phosphorus2/ O processing systems.
To achieve the goals above, present invention employs following technical solutions：
A kind of modified form A for intensified denitrification and dephosphorization2/ O processing systems, including non-aeration oxidation ditch, aerated oxidation ditch
And secondary settling tank, one end of the non-aeration oxidation ditch are connected with wastewater inlet pipe, and non-aeration oxidation ditch, aerated oxidation ditch and two
Heavy pond passes sequentially through pipeline and is connected, and reflux liquid pipe, secondary settling tank are connected between aerated oxidation ditch and non-aeration oxidation ditch
On mud return line, outfall sewer and sludge carrier pipe are installed, the other end of mud return line is connected with non-aeration oxidation ditch
Logical, the other end of sludge carrier pipe is connected with the input end of filter press, and the outlet end of filter press is equipped with pressing filtering liquid return pipe,
The lower end of filter press is equipped with sludge delivery outlet.
Preferably, the first phegma branch pipe, the second phegma branch pipe and third phegma are welded in the reflux liquid pipe
Branch pipe, the first phegma branch pipe, the second phegma branch pipe and third phegma branch pipe are connected with non-aeration oxidation ditch, and first
Phegma branch pipe, the second phegma branch pipe and third phegma branch pipe are evenly distributed in the outside of non-aeration oxidation ditch.
Preferably, the oxidation ditch of the non-aeration oxidation ditch is Paasche Wei Er oxidation ditches, and non-aeration oxidation ditch
Inside is equipped with underwater propeller.
Preferably, the oxidation ditch of the aerated oxidation ditch is card Losail oxidation ditch, and the inside of aerated oxidation ditch
Underwater propeller, and the bottom of pond installation micro-hole aerator or aeration tube of aerated oxidation ditch are installed.
Preferably, waste water pump is equipped with by screw and flange in the reflux liquid pipe, and mud return line, sludge convey
Sludge pump is equipped with by screw and flange on pipe.
Preferably, it is separately installed with oxygen concentration detector on the non-aeration oxidation ditch and aerated oxidation ditch.
Preferably, the pipe diameter size phase of the first phegma branch pipe, the second phegma branch pipe and third phegma branch pipe
Together.
The beneficial effects of the invention are as follows：
1, the sewage in wastewater inlet pipe enters non-aeration jointly after pretreatment with the returned sludge from secondary settling tank
Oxidation ditch, returned sludge and phegma enter after non-aeration oxidation ditch by rapid dilution, and dissolved oxygen concentration is down to 0.5mg/L in pond
Hereinafter, nitrate is reduced to N under the action of denitrifying bacterium2It is removed from sewage, in each water entry downstream, with nitre
Hydrochlorate concentration reduces, and oxidation-reduction potential further decreases, and forms anaerobic zone, and polyP bacteria carries out anaerobic phosphorus release in anaerobic zone,
Dissolved oxygen in phegma and returned sludge is rapidly diluted, and is alleviated adverse effect of the dissolved oxygen to denitrogenation dephosphorizing, is improved
The removal effect and utilization of carbon source rate of total nitrogen.
2, sewage subsequently enters aerated oxidation ditch, continues to complete removal, biological nitration and the aerobic phosphorus absorption process of organic matter,
Organic matter, ammonia nitrogen, the total phosphorus in sewage are removed, the muddy water mixed solution of aerated oxidation ditch outflow carries out solid-liquid point in secondary settling tank
From secondary settling tank partial sludge is back to no aerated oxidation ditch, and excess sludge transports outward disposition after filter press is dehydrated, and sludge is whole
Complete anaerobism, anoxic, aerobic process are experienced, is conducive to the abundant suction phosphorus of sludge, improves total phosphorus removal effect.
3, using oxidation ditch as A2The anaerobic zone and anoxic zone of/O techniques improve being applicable in for sewage disposal system
Range can reduce cost, be more suitable for promoting.
Description of the drawings
Fig. 1 is a kind of modified form A for intensified denitrification and dephosphorization proposed by the present invention2The structural representation of/O processing systems
Figure；
In figure：1 non-aeration oxidation ditch, 2 aerated oxidation ditch, 3 secondary settling tanks, 4 wastewater inlet pipes, 5 mud return lines, 6 reflux
Liquid pipe, 61 first phegma branch pipes, 62 second phegma branch pipes, 63 third phegma branch pipes, 7 outfall sewers, the conveying of 8 sludge
Pipe, 9 filter presses, 10 sludge delivery outlets, 11 pressing filtering liquid return pipes.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1, a kind of modified form A for intensified denitrification and dephosphorization2/ O processing systems, including non-aeration oxidation ditch 1, exposure
One end of gas oxidation ditch 2 and secondary settling tank 3, non-aeration oxidation ditch 1 is connected with wastewater inlet pipe 4, and non-aeration oxidation ditch 1, aeration
Oxidation ditch 2 passes sequentially through pipeline with secondary settling tank 3 and is connected, and is connected with back between aerated oxidation ditch 2 and non-aeration oxidation ditch 1
Fluid tube 6 is equipped with mud return line 5, outfall sewer 7 and sludge carrier pipe 8, the other end of mud return line 5 on secondary settling tank 3
It is connected with non-aeration oxidation ditch 1, the other end of sludge carrier pipe 8 is connected with the input end of filter press 9, and filter press 9 goes out
Mouth end is equipped with pressing filtering liquid return pipe 11, and the lower end of filter press 9 is equipped with sludge delivery outlet 10, first is welded in the liquid pipe 6 that flows back
Phegma branch pipe 61, the second phegma branch pipe 62 and third phegma branch pipe 63, the first phegma branch pipe 61, the second phegma branch
Pipe 62 and third phegma branch pipe 63 are connected with non-aeration oxidation ditch 1, and the first phegma branch pipe 61, the second phegma branch pipe
62 and third phegma branch pipe 63 be evenly distributed in the outside of non-aeration oxidation ditch 1, the oxidation ditch of non-aeration oxidation ditch 1 is
Paasche Wei Er oxidation ditches, and the inside of non-aeration oxidation ditch 1 is equipped with underwater propeller, the oxidation ditch of aerated oxidation ditch 2
For card Losail oxidation ditch, and the inside of aerated oxidation ditch 2 is equipped with underwater propeller, and the bottom of pond peace of aerated oxidation ditch 2
Micro-hole aerator or aeration tube are filled, waste water pump, and mud return line 5, sludge are equipped with by screw and flange in the liquid pipe 6 that flows back
Sludge pump is equipped with by screw and flange in delivery pipe 8, oxygen is separately installed on non-aeration oxidation ditch 1 and aerated oxidation ditch 2
Concentration detector, the first phegma branch pipe 61, the second phegma branch pipe 62 are identical with the pipe diameter size of third phegma branch pipe 63.
In the present embodiment, the sewage in wastewater inlet pipe 4 is total with the returned sludge from secondary settling tank 3 after pretreatment
With non-aeration oxidation ditch 1 is entered, oxidation ditch is Paasche Wei Er oxidation ditches, and the hydraulic detention time of non-aeration oxidation ditch 1 is
The return sludge ratio of 2-6h, control mud return line 5 are 40-100%, and the phegma from aerated oxidation ditch 2 is returned by three
Flow liquid branch pipe is back to non-aeration oxidation ditch, and (three phegma branch pipes are the first phegma branch pipe 61, the second phegma branch pipe 62
With third phegma branch pipe 63), three phegma branch pipe waters evenly distribute, and phegma reflux ratio is 100-200%, and reflux is dirty
Mud and phegma enter after non-aeration oxidation ditch 1 by rapid dilution, and dissolved oxygen concentration is down to 0.5mg/L hereinafter, nitrate in pond
Under the action of denitrifying bacterium, it is reduced to N2It is removed from sewage, in each water entry downstream, as nitrate concentration drops
Low, oxidation-reduction potential further decreases, and forms anaerobic zone, and polyP bacteria carries out anaerobic phosphorus release in anaerobic zone, phegma and returns
Dissolved oxygen in stream sludge is rapidly diluted, and is alleviated adverse effect of the dissolved oxygen to denitrogenation dephosphorizing, is improved the removal of total nitrogen
Effect and utilization of carbon source rate, sewage subsequently enter aerated oxidation ditch 2, continue to complete the removal of organic matter, biological nitration and aerobic
Inhale phosphorus process, remove sewage in organic matter, ammonia nitrogen, total phosphorus, control aerated oxidation ditch in dissolved oxygen need to maintain 2mg/L with
On, pond type is card Losail oxidation ditch, and the muddy water mixed solution of hydraulic detention time 6-12h, the outflow of aerated oxidation ditch 2 are heavy two
It is separated by solid-liquid separation in pond 3,3 partial sludge of secondary settling tank is back to no aerated oxidation ditch 1, and excess sludge is dehydrated by filter press 9
Outward transport disposition afterwards, the water that 9 press filtration of filter press generates enter pressing filtering liquid return pipe 11, and the water in pressing filtering liquid return pipe 11 is back to
Sump, sludge all experienced complete anaerobism, anoxic, aerobic process, are conducive to the abundant suction phosphorus of sludge, improve total phosphorus and go
Except effect, and after sewage disposal completely can with qualified discharge, since sewage will be completed repeatedly to recycle in no aerated oxidation ditch 1,
And flow velocity is very fast, the dissolved oxygen contained in returned sludge and phegma can be diluted quickly, and dissolved oxygen concentration reduces rapidly, and be reduced
Adverse effect of the dissolved oxygen to anaerobic phosphorus release and denitrification denitrogenation, pulling flow type feature that no aerated oxidation ditch 1 has, and can be
There is the phenomenon that concentration gradient from high to low is presented in dissolved oxygen and nitrate in each water entry downstream, and then is formed and multiple detested
Oxygen-anoxic zone, part of contaminated water can also enter the anaerobic zone or anoxic zone of no aerated oxidation ditch 1 by multiple water entries, to dirt
The dephosphorization of water treatment system or denitrification functions are further strengthened.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of modified form A for intensified denitrification and dephosphorization2/ O processing systems, including non-aeration oxidation ditch (1), aerated oxidation ditch
(2) and secondary settling tank (3), which is characterized in that one end of the non-aeration oxidation ditch (1) is connected with wastewater inlet pipe (4), and non-exposure
Gas oxidation ditch (1), aerated oxidation ditch (2) pass sequentially through pipeline with secondary settling tank (3) and are connected, and aerated oxidation ditch (2) with it is non-
It is connected with reflux liquid pipe (6) between aerated oxidation ditch (1), mud return line (5), outfall sewer (7) are installed on secondary settling tank (3)
It is connected with non-aeration oxidation ditch (1) with the other end of sludge carrier pipe (8), mud return line (5), sludge carrier pipe (8)
The other end is connected with the input end of filter press (9), and the outlet end of filter press (9) is equipped with pressing filtering liquid return pipe (11), press filtration
The lower end of machine (9) is equipped with sludge delivery outlet (10).
2. a kind of modified form A for intensified denitrification and dephosphorization according to claim 12/ O processing systems, which is characterized in that
The first phegma branch pipe (61), the second phegma branch pipe (62) and third phegma branch pipe are welded on the reflux liquid pipe (6)
(63), the first phegma branch pipe (61), the second phegma branch pipe (62) and third phegma branch pipe (63) and non-aeration oxidation ditch
(1) it is connected, and the first phegma branch pipe (61), the second phegma branch pipe (62) and third phegma branch pipe (63) are evenly distributed
Outside in non-aeration oxidation ditch (1).
3. a kind of modified form A for intensified denitrification and dephosphorization according to claim 12/ O processing systems, which is characterized in that
The oxidation ditch of the non-aeration oxidation ditch (1) is Paasche Wei Er oxidation ditches, and the inside of non-aeration oxidation ditch (1) is equipped with
Underwater propeller.
4. a kind of modified form A for intensified denitrification and dephosphorization according to claim 12/ O processing systems, which is characterized in that
The oxidation ditch of the aerated oxidation ditch (2) is card Losail oxidation ditch, and the inside of aerated oxidation ditch (2) is equipped under water
Propeller, and the bottom of pond installation micro-hole aerator or aeration tube of aerated oxidation ditch (2).
5. a kind of modified form A for intensified denitrification and dephosphorization according to claim 12/ O processing systems, which is characterized in that
Waste water pump is equipped with by screw and flange on the reflux liquid pipe (6), and is led on mud return line (5), sludge carrier pipe (8)
It crosses screw and flange is equipped with sludge pump.
6. a kind of modified form A for intensified denitrification and dephosphorization according to claim 12/ O processing systems, which is characterized in that
It is separately installed with oxygen concentration detector on the non-aeration oxidation ditch (1) and aerated oxidation ditch (2).
7. a kind of modified form A for intensified denitrification and dephosphorization according to claim 1 or 22/ O processing systems, feature exist
In, the first phegma branch pipe (61), the pipe diameter size phase of the second phegma branch pipe (62) and third phegma branch pipe (63)
Together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810340610.4A CN108328736A (en) | 2018-04-17 | 2018-04-17 | A kind of modified form A for intensified denitrification and dephosphorization2/ O processing systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810340610.4A CN108328736A (en) | 2018-04-17 | 2018-04-17 | A kind of modified form A for intensified denitrification and dephosphorization2/ O processing systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108328736A true CN108328736A (en) | 2018-07-27 |
Family
ID=62933320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810340610.4A Pending CN108328736A (en) | 2018-04-17 | 2018-04-17 | A kind of modified form A for intensified denitrification and dephosphorization2/ O processing systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108328736A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436628A (en) * | 2019-08-15 | 2019-11-12 | 浙江海牛环境科技股份有限公司 | A kind of improved oxidation ditch biochemical wastewater treatment system |
| CN110577278A (en) * | 2019-07-04 | 2019-12-17 | 广东省环境保护工程研究设计院有限公司 | method and medium for predicting spatial distribution of dissolved oxygen concentration of oxidation ditch pool type AAO (anaerobic-anoxic-oxic) process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201756490U (en) * | 2010-07-30 | 2011-03-09 | 同济大学 | Continuous-flow sewage low-oxygen short-range denitrification treatment device |
| CN102001787A (en) * | 2010-10-26 | 2011-04-06 | 北京市环境保护科学研究院 | Anaerobic microporous aerator oxidation ditch reactor and sewage treatment method |
| CN105060489A (en) * | 2015-09-10 | 2015-11-18 | 天津泰达新水源科技开发有限公司 | A2O (Anaerobic-Anoxic-Oxic) system of denitrification and dephosphorization for sewage treatment |
| CN208234622U (en) * | 2018-04-17 | 2018-12-14 | 沈阳环境科学研究院 | A kind of modified form A2/O processing system for intensified denitrification and dephosphorization |
-
2018
- 2018-04-17 CN CN201810340610.4A patent/CN108328736A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201756490U (en) * | 2010-07-30 | 2011-03-09 | 同济大学 | Continuous-flow sewage low-oxygen short-range denitrification treatment device |
| CN102001787A (en) * | 2010-10-26 | 2011-04-06 | 北京市环境保护科学研究院 | Anaerobic microporous aerator oxidation ditch reactor and sewage treatment method |
| CN105060489A (en) * | 2015-09-10 | 2015-11-18 | 天津泰达新水源科技开发有限公司 | A2O (Anaerobic-Anoxic-Oxic) system of denitrification and dephosphorization for sewage treatment |
| CN208234622U (en) * | 2018-04-17 | 2018-12-14 | 沈阳环境科学研究院 | A kind of modified form A2/O processing system for intensified denitrification and dephosphorization |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110577278A (en) * | 2019-07-04 | 2019-12-17 | 广东省环境保护工程研究设计院有限公司 | method and medium for predicting spatial distribution of dissolved oxygen concentration of oxidation ditch pool type AAO (anaerobic-anoxic-oxic) process |
| CN110577278B (en) * | 2019-07-04 | 2022-05-10 | 广东省环境保护工程研究设计院有限公司 | Method and medium for predicting spatial distribution of dissolved oxygen concentration of oxidation ditch pool type AAO (anaerobic-anoxic-oxic) process |
| CN110436628A (en) * | 2019-08-15 | 2019-11-12 | 浙江海牛环境科技股份有限公司 | A kind of improved oxidation ditch biochemical wastewater treatment system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105330018B (en) | It is a kind of that the quick urban sewage treating device and method for realizing short distance nitration is suppressed based on free nitrous acid | |
| CN106565017B (en) | A kind of bicirculating denitrogenation dephosphorizing waste water treatment system and its method | |
| CN105502826B (en) | A kind of high-efficient denitrification and dephosphorization sewage treatment process and its device | |
| CN204058199U (en) | A kind of A2/O+ MBR combined sewage water regenerating unit | |
| CN107381961A (en) | A kind of processing system of decentralized type sewage and the processing method using the processing system | |
| CN108585384B (en) | MBBR high-standard sewage treatment system and treatment process | |
| CN103214141A (en) | Sewage advanced treatment and recycling method capable of substantially raising economy | |
| CN106006956B (en) | A kind of synchronization process higher concentration NO3-The apparatus and method of-N waste water, sludge-digestion liquid and municipal sewage | |
| CN108585385B (en) | MBBR sewage treatment system and treatment process | |
| CN108585350A (en) | A kind of town sewage treatment system up to standard to IV class water of surface water | |
| CN103979750B (en) | Reactor for sewage treatment and phosphorus recovery and method for recovering phosphorus by using same | |
| CN210915752U (en) | Compact MBBR and super-efficient separation coupled deep nitrogen and phosphorus removal treatment system | |
| CN209619125U (en) | Magnetic-coagulation clarification and denitrification filter pool combined type sewage treatment equipment | |
| CN114291964B (en) | Sewage treatment system and method for denitrification and phosphorus recovery | |
| CN101746931B (en) | Denitrification dephosphorization biological treatment and filtration integral sewage treatment system and method thereof | |
| CN105967435A (en) | Double-circulation nitrogen and phosphorus removal wastewater treatment system and process | |
| CN111646649A (en) | Excrement wastewater treatment method for modular railway train excrement collector | |
| CN201598224U (en) | Biological nitrogen and phosphorus removal treatment and filter integrated sewage treatment system | |
| CN108328736A (en) | A kind of modified form A for intensified denitrification and dephosphorization2/ O processing systems | |
| CN110590077A (en) | Compact MBBR and super-efficient separation coupled deep nitrogen and phosphorus removal treatment system | |
| CN106587531A (en) | Treatment system and method for synthesizing type industrial park sewage | |
| CN208234622U (en) | A kind of modified form A2/O processing system for intensified denitrification and dephosphorization | |
| CN101913734B (en) | A/A-MBR intensified combined device for denitriding and dephosphorizing and process thereof | |
| CN104986854A (en) | Sludge backflow control system and method and sewage treatment system | |
| CN105016578A (en) | Treatment system and method for aged leachate in refuse landfill |
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 |