CN109761445A - A kind of double sludge systems of biological carbon and phosphorous removal-MBR combination - Google Patents
A kind of double sludge systems of biological carbon and phosphorous removal-MBR combination Download PDFInfo
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Abstract
A kind of double sludge systems of biological carbon and phosphorous removal-MBR combination, including anaerobic pond, anoxic pond, aerobic tank, secondary settling tank, the pond MBR, flocculation inclined plate precipitation pond, clear water reserviors and deep bed denitrification pond；Anaerobic pond import is connected with sewage, and anaerobic pond outlet is connected with anoxic pond import；Anoxic pond outlet is connected with aerobic tank import；Aerobic tank outlet is connected with secondary settling tank；Secondary settling tank outlet is connected with the pond MBR and anaerobic pond respectively, and the outlet of the pond MBR is connected with flocculation inclined plate precipitation pond and anoxic pond respectively, and MBR water outlet a part, which flows into flocculation inclined plate precipitation pond, to be precipitated, and a branch is back in anoxic pond；The outlet of flocculation inclined plate precipitation pond is connected with clear water reserviors import；Clear water reserviors outlet is connected with deep bed denitrification pond；The outlet of deep bed denitrification pond is connected with outlet pipe and the pond MBR.The present invention improves nitrifier quantity, and then significantly improves ammonia nitrogen removal effect, and ammonia nitrogen can be fully converted to nitrate nitrogen, effectively remove the content of total nitrogen in system.
Description
Technical field
The present invention relates to fields more particularly to a kind of biological carbon and phosphorous removal-MBR to combine double sludge systems.
Background technique
Sewage treatment (sewage treatment, wastewater treatment): for make sewage reach be discharged into it is a certain
The process that water body or the water quality requirement reused purify it.Sewage treatment is widely used in building, agricultural, hands over
The every field such as logical, the energy, petrochemical industry, environmental protection, urban landscape, medical treatment, food and drink, also come into the daily of common people more and more
Life.It is higher that residue content can be filtered in sewage, it, can be in department of biochemistry if these residues are directly entered biochemical treatment system without processing
It is accumulated in system and occupies a large amount of pool capacities, reducing pool capacity constantly, to eventually lead to system entirely ineffective.Meanwhile removal is to biological treatment
Process has the substance of inhibiting effect, reduces the load of biological respinse, improves the condition of biological respinse, normally transports to processing system
Row, reducing operating cost is all an essential step.
A20 technique and MBR technique are all a kind of mode of sewage treatment, A2O is a kind of common secondary sewage processing work
Skill has the function of synchronous denitrification dephosphorizing, can be used for secondary sewage processing or three-level sewage treatment；Subsequent increase advanced treating
Afterwards, it can be used as Treated sewage reusing, there is good Nitrogen/Phosphorus Removal.MBR is also known as membrane bioreactor, is one kind by activated sludge
The novel water treatment technology that method is combined with membrane separation technique.Film it is many kinds of, classify by separating mechanism, there is reaction
Film, amberplex, permeable membrane etc.；The qualitative classification for pressing film has natural membranes (biomembrane) and synthesis film (organic film and inorganic
Film)；The structural shape classification for pressing film, there is plate, cast, screw type and hollow fiber type etc..
Traditional A2There are sludge contradictions with nitrifier for the polyP bacteria of O technique, in order to guarantee certain biological phosphor-removing effect, need
Select relatively short sludge age.And the nitrifier generation cycle is longer, under short sludge age, it is difficult to guarantee enough nitrifier biologies
Amount, so that ammonia nitrogen removal effect is restricted, and then further influences total nitrogen removal effect.
To solve the above problems, proposing that a kind of biological carbon and phosphorous removal-MBR combines double sludge systems in the application.
Summary of the invention
(1) goal of the invention
To solve technical problem present in background technique, the present invention proposes that a kind of biological carbon and phosphorous removal-MBR combines double sludge systems
System improves nitrifier quantity, and then significantly improves ammonia nitrogen removal effect, and ammonia nitrogen can be fully converted to nitrate nitrogen, effectively remove
The content of total nitrogen in system.
(2) technical solution
To solve the above problems, the present invention provides a kind of double sludge systems of biological carbon and phosphorous removal-MBR combination, including anaerobic pond,
Anoxic pond, aerobic tank, secondary settling tank, the pond MBR, flocculation inclined plate precipitation pond, clear water reserviors and deep bed denitrification pond；
Anaerobic pond import is connected with sewage, and anaerobic pond outlet is connected with anoxic pond import；Anoxic pond outlet and aerobic tank import phase
Even；Aerobic tank outlet is connected with secondary settling tank；Secondary settling tank outlet is connected with the pond MBR and anaerobic pond respectively, and mixed liquor passes through in secondary settling tank
Sedimentation basin carries out mud-water separation, and supernatant enters in MBR, and a part of sludge reflux is into anaerobic pond；The pond MBR outlet respectively with wadding
Solidifying inclined-plate clarifying basin is connected with anoxic pond, and MBR water outlet a part, which flows into flocculation inclined plate precipitation pond, to be precipitated, branch reflux
To anoxic pond；The outlet of flocculation inclined plate precipitation pond is connected with clear water reserviors import；Clear water reserviors outlet is connected with deep bed denitrification pond；It is deep
The outlet of bed denitrification pond is connected with outlet pipe and the pond MBR, reaches discharge standard water quality and is discharged from outlet pipe, a part of COD
(BOD5) content is exceeded is back in the pond MBR.
Preferably, the design parameter of anaerobic pond is as follows:
Hydraulic detention time: T=1.5h；
Surface loading are as follows: 0.48kgBOD5/kgMlss.d
Dischargeable capacity: 9.96m3；
Design size: a height of 1.5m × 1.4m of length and width × 3.3m, wherein superelevation is 0.3m.
Preferably, the design parameter of anoxic pond is as follows:
Hydraulic detention time: T=2.5h
Surface loading are as follows: 0.05kgBOD5/kgMlss.d
Dischargeable capacity: 15.84m3
Design size: a height of 2.3m × 1.5m of length and width × 3.3m, wherein superelevation is 0.3m.
Preferably, the design parameter of aerobic tank is as follows:
Hydraulic detention time: T=3h；
Sludge Surface load are as follows: 0.48kgBOD5/kgMlss.d
Dischargeable capacity: 12.24m3
Design size: a height of 2.78m × 1.5m of length and width × 3.3m, wherein superelevation is 0.3m.
Preferably, hydraulic detention time: T=1.5h；
Surface loading are as follows: 1.8m3/ (㎡ .h)
Dischargeable capacity: 6.66m3
Design size: a height of 1.5m × 1.4m of length and width × 3.3m, wherein superelevation is 0.3m.
Preferably, the design parameter in the pond MBR is as follows:
Hydraulic detention time: T=5h；
Surface loading are as follows: 0.05kgBOD5/kgMlss.d
Dischargeable capacity: 20.52m3
Design size: a height of 5.08m × 1.5m of length and width × 3.3m, wherein superelevation is 0.3m.
Preferably, flocculation inclined plate precipitation pond is divided into coagulating basin and sedimentation basin, and wherein coagulating basin is the flocculation of three lattice mechanical stirrings
Pond, sedimentation basin are efficient inclined-plate clarifying basin；The length, width and height design size of coagulating basin are as follows: 0.8m × 0.8m × 3.3m, superelevation 0.3m；
The length, width and height design size of sedimentation basin are as follows: 2.4m × 1.2m × 3.3m, wherein superelevation 0.3m.
Preferably, clear water reserviors are carried out disinfection processing using adding chlorine dioxide mode, are met processing effluent index and are required,
Design parameter is as follows:
Hydraulic detention time: T=1h
Dischargeable capacity: 4.8m3
Design size: a height of 2m × 0.8m of length and width × 3.3m, wherein superelevation is 0.3m.
Preferably, the design parameter in deep bed denitrification pond is as follows:
Hydraulic detention time: T=0.375h
Surface loading are as follows: 0.6 KgNO3--N/(m3.d)
Dischargeable capacity: 1.8m3
Design size: a height of 1.5m × 1.5m of length and width × 3.23m, wherein superelevation is 0.3m.
Above-mentioned technical proposal of the invention has following beneficial technical effect:
1, the sludge age contradiction of polyP bacteria and nitrifier, traditional A are solved2There are sludge lances with nitrifier for the polyP bacteria of O technique
Shield needs to select relatively short sludge age to guarantee certain biological phosphor-removing effect.And the nitrifier generation cycle is longer,
Under short sludge age, it is difficult to guarantee enough nitrification bacteria biomass, so that ammonia nitrogen removal effect is restricted, and then further influence total
Nitrogen removal effect, A2Poly- phosphorus sludge and nitrifying sludge are placed in two systems, respectively may be used by ingehious design by O-MBR technique
Independent control sludge age, nitrifying sludge are in MBR, by the crown_interception of film, can keep longer sludge age, improve nitrification bacterium number
Amount, and then significantly improve ammonia nitrogen removal effect；It is system total nitrogen since ammonia nitrogen can be fully converted to nitrate nitrogen in the unit
Good basis is established in removal.
2、A2A in O-MBR technique2O system can make its major function preferably by the reasonable setting of sludge age and residence time
The poly- phosphorus of oxygen, and nitrifying process is completed by subsequent MBR, can be reduced nitrate content in A2O system flowback sludge in this way, be reduced back
Influence of the nitrate to anaerobic phosphorus release is flowed, pre- denitrification tank can be not provided with.
3,3) film be A2O-MBR is that last water outlet ensures, on the one hand can effectively catching suspended sludge and sludge decomposition generation
Bacterial death produce body, avoid this moieties increase water outlet COD, ammonia nitrogen, on the one hand can greatly reduce water outlet SS concentration, after being
It creates good conditions after processing.
Detailed description of the invention
Fig. 1 is the process flow chart that a kind of biological carbon and phosphorous removal-MBR proposed by the present invention combines double sludge systems.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, With reference to embodiment and join
According to attached drawing, the present invention is described in more detail.It should be understood that these descriptions are merely illustrative, and it is not intended to limit this hair
Bright range.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid this is unnecessarily obscured
The concept of invention.
Fig. 1 is the process flow chart that a kind of biological carbon and phosphorous removal-MBR proposed by the present invention combines double sludge systems.
As shown in Figure 1, a kind of biological carbon and phosphorous removal-MBR proposed by the present invention combines double sludge systems, the present invention provides
A kind of double sludge systems of biological carbon and phosphorous removal-MBR combination, including anaerobic pond, anoxic pond, aerobic tank, secondary settling tank, the pond MBR, flocculation
Inclined-plate clarifying basin, clear water reserviors and deep bed denitrification pond；
Anaerobic pond import is connected with sewage, and anaerobic pond outlet is connected with anoxic pond import；Anoxic pond outlet and aerobic tank import phase
Even；Aerobic tank outlet is connected with secondary settling tank；Secondary settling tank outlet is connected with the pond MBR and anaerobic pond respectively, and mixed liquor passes through in secondary settling tank
Sedimentation basin carries out mud-water separation, and supernatant enters in MBR, and a part of sludge reflux is into anaerobic pond；The pond MBR outlet respectively with wadding
Solidifying inclined-plate clarifying basin is connected with anoxic pond, and MBR water outlet a part, which flows into flocculation inclined plate precipitation pond, to be precipitated, branch reflux
To anoxic pond；The outlet of flocculation inclined plate precipitation pond is connected with clear water reserviors import；Clear water reserviors outlet is connected with deep bed denitrification pond；It is deep
The outlet of bed denitrification pond is connected with outlet pipe and the pond MBR, reaches discharge standard water quality and is discharged from outlet pipe, a part of COD
(BOD5) content is exceeded is back in the pond MBR.
In an alternative embodiment, the design parameter of anaerobic pond is as follows:
Hydraulic detention time: T=1.5h；
Surface loading are as follows: 0.48kgBOD5/kgMlss.d
Dischargeable capacity: 9.96m3；
Design size: a height of 1.5m × 1.4m of length and width × 3.3m, wherein superelevation is 0.3m.
In an alternative embodiment, the design parameter of anoxic pond is as follows:
Hydraulic detention time: T=2.5h
Surface loading are as follows: 0.05kgBOD5/kgMlss.d
Dischargeable capacity: 15.84m3
Design size: a height of 2.3m × 1.5m of length and width × 3.3m, wherein superelevation is 0.3m.
In an alternative embodiment, the design parameter of aerobic tank is as follows:
Hydraulic detention time: T=3h；
Sludge Surface load are as follows: 0.48kgBOD5/kgMlss.d
Dischargeable capacity: 12.24m3
Design size: a height of 2.78m × 1.5m of length and width × 3.3m, wherein superelevation is 0.3m.
In an alternative embodiment, hydraulic detention time: T=1.5h；
Surface loading are as follows: 1.8m3/ (㎡ .h)
Dischargeable capacity: 6.66m3
Design size: a height of 1.5m × 1.4m of length and width × 3.3m, wherein superelevation is 0.3m.
In an alternative embodiment, the design parameter in the pond MBR is as follows:
Hydraulic detention time: T=5h；
Surface loading are as follows: 0.05kgBOD5/kgMlss.d
Dischargeable capacity: 20.52m3
Design size: a height of 5.08m × 1.5m of length and width × 3.3m, wherein superelevation is 0.3m.
In an alternative embodiment, flocculation inclined plate precipitation pond is divided into coagulating basin and sedimentation basin, and wherein coagulating basin is three
Lattice mechanical stirring flocculation basin, sedimentation basin are efficient inclined-plate clarifying basin；The length, width and height design size of coagulating basin are as follows: 0.8m × 0.8m ×
3.3m, superelevation 0.3m；The length, width and height design size of sedimentation basin are as follows: 2.4m × 1.2m × 3.3m, wherein superelevation 0.3m.
In an alternative embodiment, clear water reserviors are carried out disinfection processing using adding chlorine dioxide mode, and satisfaction is handled
Effluent index requirement, design parameter are as follows:
Hydraulic detention time: T=1h
Dischargeable capacity: 4.8m3
Design size: a height of 2m × 0.8m of length and width × 3.3m, wherein superelevation is 0.3m.
In an alternative embodiment, the design parameter in deep bed denitrification pond is as follows:
Hydraulic detention time: T=0.375h
Surface loading are as follows: 0.6 KgNO3--N/(m3.d)
Dischargeable capacity: 1.8m3
Design size: a height of 1.5m × 1.5m of length and width × 3.23m, wherein superelevation is 0.3m.
In the present invention, using " A2O-MBR+ coagulation/High-rate sedimentation+depth bed denitrification filter pool, A2O-MBR is removed based on tradition
The sludge age contradiction of phosphorus denitrification process is researched and developed.The technique organically combines A2O technique and MBR, forms a kind of denitrogenation dephosphorizing efficiency
Higher processing system.Sludge completes anaerobic phosphorus release through anaerobic unit, while absorbing carbon source synthesis PHB；In the anti-nitre of anoxic unit
Change bacterium and complete denitrogenation by electron donor of organic matter, nitrification liquid is from MBR effluent recycling；Aerobic unit main function is with oxygen
The poly- phosphorus of excess is completed for electron acceptor, while decomposing the PHB of anaerobic unit synthesis;Aerobic unit go out flow mixed liquor through sedimentation basin into
Row mud-water separation, supernatant enter MBR, and MBR main function is efficient removal ammonia nitrogen (being converted into nitrate), aoxidize rest COD
Deng MBR is discharged a part and is back to anoxic unit, carries out preposition denitrogenation.
Sewage is through A2After O-MBR process, if system operational excellence, COD, BOD, ammonia nitrogen can reach IV class of surface water class
Water quality standard increases coagulation/High-rate sedimentation and deep bed denitrification unit to ensure total nitrogen, total phosphorus qualified discharge.Coagulation/efficiently heavy
It forms sediment mainly by adding PAC, PAM, forms difficultly-soluble phosphates, further coagulating sedimentation removal, according to treatment scale, coagulation unit
Using three lattice mechanical stirring flocculation basins, precipitation unit uses efficient inclined-plate clarifying basin.Through the cell processing, it is discharged the expected drop of total phosphorus
As low as 0.3mg/L or less.
Deep bed denitrification technology as a kind of novel denitrification process in the whole nation more sit sewage treatment plant upgrading in
Using the technique finishes the advanced treatment process of two stage biological processing, when adding outer carbon source, water outlet total nitrogen can be made near
5mg/L or less.Deep bed denitrification filter pool, integrated bio film denitrification and filtering technique, system microorganism are deposited with biological form membrane
, biomass it is high, stablize, denitrification rates are fast, while biggish filter bed depth, it can be ensured that retention falls off biomembrane, avoids penetrating,
Influence water quality.
Using deep bed denitrification (adding outer carbon source) technology, advanced nitrogen is completed, carbon source dosage is according to practical water quality analyser
It calculates and determines.To prevent carbon source spilling from causing COD (BOD5) exceeded, the pipe of deep bed denitrification effluent recycling to MBR is arranged in this technique
Road, in COD (BOD5) exceeded, the reduction that MBR carries out COD is entered by reflux a part water outlet.
It should be understood that above-mentioned specific embodiment of the invention is used only for exemplary illustration or explains of the invention
Principle, but not to limit the present invention.Therefore, that is done without departing from the spirit and scope of the present invention is any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.In addition, appended claims purport of the present invention
Covering the whole variations fallen into attached claim scope and boundary or this range and the equivalent form on boundary and is repairing
Change example.
Claims (9)
1. a kind of biological carbon and phosphorous removal-MBR combines double sludge systems, which is characterized in that including anaerobic pond, anoxic pond, aerobic tank,
Secondary settling tank, the pond MBR, flocculation inclined plate precipitation pond, clear water reserviors and deep bed denitrification pond；
Anaerobic pond import is connected with sewage, and anaerobic pond outlet is connected with anoxic pond import；Anoxic pond outlet and aerobic tank import phase
Even；Aerobic tank outlet is connected with secondary settling tank；Secondary settling tank outlet is connected with the pond MBR and anaerobic pond respectively, and mixed liquor passes through in secondary settling tank
Sedimentation basin carries out mud-water separation, and supernatant enters in MBR, and a part of sludge reflux is into anaerobic pond；The pond MBR outlet respectively with wadding
Solidifying inclined-plate clarifying basin is connected with anoxic pond, and MBR water outlet a part, which flows into flocculation inclined plate precipitation pond, to be precipitated, branch reflux
To anoxic pond；The outlet of flocculation inclined plate precipitation pond is connected with clear water reserviors import；Clear water reserviors outlet is connected with deep bed denitrification pond；It is deep
The outlet of bed denitrification pond is connected with outlet pipe and the pond MBR, reaches discharge standard water quality and is discharged from outlet pipe, a part of COD
(BOD5) content is exceeded is back in the pond MBR.
2. a kind of biological carbon and phosphorous removal-MBR according to claim 1 combines double sludge systems, which is characterized in that anaerobic pond
Design parameter it is as follows:
Hydraulic detention time: T=1.5h；
Surface loading are as follows: 0.48kgBOD5/kgMlss.d
Dischargeable capacity: 9.96m3；
Design size: a height of 1.5m × 1.4m of length and width × 3.3m, wherein superelevation is 0.3m.
3. a kind of biological carbon and phosphorous removal-MBR according to claim 1 combines double sludge systems, which is characterized in that anoxic pond
Design parameter it is as follows:
Hydraulic detention time: T=2.5h
Surface loading are as follows: 0.05kgBOD5/kgMlss.d
Dischargeable capacity: 15.84m3
Design size: a height of 2.3m × 1.5m of length and width × 3.3m, wherein superelevation is 0.3m.
4. a kind of biological carbon and phosphorous removal-MBR according to claim 1 combines double sludge systems, which is characterized in that aerobic tank
Design parameter it is as follows:
Hydraulic detention time: T=3h；
Sludge Surface load are as follows: 0.48kgBOD5/kgMlss.d
Dischargeable capacity: 12.24m3
Design size: a height of 2.78m × 1.5m of length and width × 3.3m, wherein superelevation is 0.3m.
5. a kind of biological carbon and phosphorous removal-MBR according to claim 1 combines double sludge systems, which is characterized in that secondary settling tank
Design parameter it is as follows:
Hydraulic detention time: T=1.5h；
Surface loading are as follows: 1.8m3/ (㎡ .h)
Dischargeable capacity: 6.66m3
Design size: a height of 1.5m × 1.4m of length and width × 3.3m, wherein superelevation is 0.3m.
6. a kind of biological carbon and phosphorous removal-MBR according to claim 1 combines double sludge systems, which is characterized in that the pond MBR
Design parameter it is as follows:
Hydraulic detention time: T=5h；
Surface loading are as follows: 0.05kgBOD5/kgMlss.d
Dischargeable capacity: 20.52m3
Design size: a height of 5.08m × 1.5m of length and width × 3.3m, wherein superelevation is 0.3m.
7. a kind of biological carbon and phosphorous removal-MBR according to claim 1 combines double sludge systems, which is characterized in that flocculation is oblique
Plate sedimentation basin is divided into coagulating basin and sedimentation basin, and wherein coagulating basin is three lattice mechanical stirring flocculation basins, and sedimentation basin is heavy for efficient inclined plate
Shallow lake pond；The length, width and height design size of coagulating basin are as follows: 0.8m × 0.8m × 3.3m, superelevation 0.3m；The length, width and height of sedimentation basin design ruler
It is very little are as follows: 2.4m × 1.2m × 3.3m, wherein superelevation 0.3m.
8. a kind of biological carbon and phosphorous removal-MBR according to claim 1 combines double sludge systems, which is characterized in that clear water reserviors
It is carried out disinfection processing using chlorine dioxide mode is added, meets processing effluent index requirement, design parameter is as follows:
Hydraulic detention time: T=1h
Dischargeable capacity: 4.8m3
Design size: a height of 2m × 0.8m of length and width × 3.3m, wherein superelevation is 0.3m.
9. a kind of biological carbon and phosphorous removal-MBR according to claim 1 combines double sludge systems, which is characterized in that deep bed is anti-
The design parameter of nitrification tank is as follows:
Hydraulic detention time: T=0.375h
Surface loading are as follows: 0.6 KgNO3--N/(m3.d)
Dischargeable capacity: 1.8m3
Design size: a height of 1.5m × 1.5m of length and width × 3.23m, wherein superelevation is 0.3m.
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| CN110372148A (en) * | 2019-07-03 | 2019-10-25 | 浙江同成环境科技有限公司 | A kind of efficient treatment process of kitchen garbage, waste-water |
| CN111704323A (en) * | 2020-07-03 | 2020-09-25 | 赣州广安建设工程有限公司 | High-efficient sewage treatment system of modularization integrated form |
| CN112777844A (en) * | 2020-11-19 | 2021-05-11 | 浙江深德环境技术有限公司 | Microorganism enrichment system and method for degrading refractory organic matters |
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