CN110015756A - A kind of denitrification dephosphorization coupled vibrations anoxic MBR device and technique - Google Patents
A kind of denitrification dephosphorization coupled vibrations anoxic MBR device and technique Download PDFInfo
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- CN110015756A CN110015756A CN201910288666.4A CN201910288666A CN110015756A CN 110015756 A CN110015756 A CN 110015756A CN 201910288666 A CN201910288666 A CN 201910288666A CN 110015756 A CN110015756 A CN 110015756A
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- 238000000034 method Methods 0.000 title claims abstract description 92
- 239000010802 sludge Substances 0.000 claims abstract description 99
- 230000008569 process Effects 0.000 claims abstract description 67
- 239000012528 membrane Substances 0.000 claims abstract description 47
- 239000013049 sediment Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000010992 reflux Methods 0.000 claims abstract description 17
- 239000010865 sewage Substances 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 11
- 238000005276 aerator Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims abstract description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 30
- 229910052698 phosphorus Inorganic materials 0.000 claims description 30
- 239000011574 phosphorus Substances 0.000 claims description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 13
- 229910052760 oxygen Inorganic materials 0.000 claims description 13
- 239000001301 oxygen Substances 0.000 claims description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 238000001556 precipitation Methods 0.000 claims description 10
- 241000894006 Bacteria Species 0.000 claims description 9
- 239000006228 supernatant Substances 0.000 claims description 9
- 229910019142 PO4 Inorganic materials 0.000 claims description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 8
- 239000010452 phosphate Substances 0.000 claims description 8
- 238000012279 drainage procedure Methods 0.000 claims description 7
- 229920000388 Polyphosphate Polymers 0.000 claims description 6
- 229920000037 Polyproline Polymers 0.000 claims description 6
- 239000001205 polyphosphate Substances 0.000 claims description 6
- 235000011176 polyphosphates Nutrition 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 4
- 238000001471 micro-filtration Methods 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- 230000015556 catabolic process Effects 0.000 claims description 3
- 238000006731 degradation reaction Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000007667 floating Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- 239000002131 composite material Substances 0.000 description 5
- 238000011049 filling Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000001376 precipitating effect Effects 0.000 description 4
- 244000005700 microbiome Species 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000012851 eutrophication Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- JXBAVRIYDKLCOE-UHFFFAOYSA-N [C].[P] Chemical compound [C].[P] JXBAVRIYDKLCOE-UHFFFAOYSA-N 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Classifications
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- 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
- C02F3/302—Nitrification and denitrification treatment
-
- 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
- C02F3/308—Biological phosphorus removal
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- 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)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention belongs to field of biological sewage treatment, and in particular to a kind of denitrification dephosphorization coupled vibrations anoxic MBR device.Described device includes the intake pool being sequentially communicated, anaerobic pond, medium sediment pool, aerobic tank and anoxic pond；Agitating device is equipped in anaerobic pond；The outlet at bottom of medium sediment pool surmounts pipeline by sludge and is connected with the bottom inlet of anoxic pond；Filler and aerator are equipped in aerobic tank；MBR membrane module is equipped in anoxic pond, anoxic pond outlet at bottom is connected with Treatment of Sludge pipeline, the outlet of Treatment of Sludge pipeline is divided into two branches, and one of branch is connected by sludge reflux pipeline with the bottom of anaerobic pond, and another branch is connected with excess sludge pipeline；The discharge ends of membrane module are connected with discharge pipe line.Technical solution of the present invention, solves that existing solid-liquid separation effect is bad, and structures number is more, and process flow is tediously long, and reaction efficiency is low, system control is complicated, the problem that water outlet is discontinuous, operation energy consumption is high, fouling membrane is difficult to control etc..
Description
Technical field
The invention belongs to field of biological sewage treatment, and in particular to a kind of denitrification dephosphorization coupled vibrations anoxic MBR device
And technique.
Background technique
Concern with country to water resource, water environment and Ecology problem, water eutrophication problem are increasingly highlighted, are mentioned
The denitrogenation dephosphorizing discharge standard of high sewage treatment plant is to prevent one of the effective measures that water eutrophication occurs.Therefore, it newly repairs
The urban wastewater treatment firm water outlet water of major river valley has been discharged into " the urban wastewater treatment firm pollutant emission standard " ordered
The execution standard of matter is promoted by original level-one B standard to level-one A standard, sewage treatment from traditional with remove COD,
BOD, suspended matter are that primary goal is transferred to the removal to nutriment nitrogen, phosphorus.This sewage treatment newly-built and built to China
Factory is proposed the demand that advanced nitrogen dephosphorization technique is carried out to sewage.Therefore, it is de- how to develop efficient, economic saprobia
Nitrogen dephosphorization new theory and new technology provide new approaches and new method for Biological Nitrogen Removal Processe, have become water treatment field
Research hotspot.
Traditional biological phosphate-eliminating technology thinks that denitrification process and dephosphorization process require consumption carbon source, that is, there is denitrification
The problem of bacterium and polyP bacteria compete carbon source, it is lower and lower that there is organic concentrations in China's municipal sewage at the same time,
The phenomenon that carbon nitrogen, the carbon-phosphorus ratio of sewage continue to decline.Traditional sewage treatment process (such as A2/O, improvement A2/O, UCT, SBR)
With certain denitrogenation and dephosphorization function, but due in denitrogenation and dephosphorization process there are the contradiction of carbon source competition and sludge age difference,
Dephosphorization and denitrogenation mutually restrict, and actual operational effect is unsatisfactory, and that there are occupied areas is larger, energy consumption is more, remain
The drawbacks such as remaining sludge yield is larger.
Denitrifying Phosphorus Removal Technology is considered as one of water treatment technology of Sustainable Development in Future, thin using facultative denitrification
Denitrification denitrogenation and biological phosphate-eliminating are combined into one by bacterium, reduce organic carbon source and O2Consumption, it is obligate compared to tradition aerobic to remove
Phosphorus bacterium can save 50% organic carbon source and 30% O2, while the surplus sludge volume of reduction 50%.At present in denitrification dephosphorization theory
On develop single mud system and driving by double-energy, but in single sludge system a variety of populations because of sludge age difference and to DO and nutritional need
Difference, influence each other between different microorganisms, denitrification dephosphorization efficiency caused to be difficult to increase substantially.The typical case of driving by double-energy
Technique includes Dephanox technique and A2N technique can preferably realize the enrichment of Denitrifying Phosphate Accumulating Organisms, but driving by double-energy will pass through
Repeatedly precipitating and multistage reflux, that there are process flows is complicated, inconvenient, controls many shortcomings such as cumbersome, denitrification
Removal and stability need to be further increased.
Therefore, be badly in need of it is a kind of not only play the dual-purpose advantage of one carbon of double sludge systems, but also have that process flow is short, precipitating
The denitrification dephosphorization device and technique that effect is good, denitrogenation dephosphorizing is high-efficient.
Summary of the invention
In order to overcome the problems of the prior art, the present invention provides a kind of denitrification dephosphorization coupled vibrations anoxic MBR dresses
It sets.The apparatus structure is simple, and occupied area is small.
A kind of denitrification dephosphorization coupled vibrations anoxic MBR technique is also provided simultaneously, solves solid-liquid point in prior art
From ineffective, structures number is more, and process flow is tediously long, and reaction efficiency is low, system control is complicated, and water outlet is discontinuous, fortune
The problem that row energy consumption is high, fouling membrane is difficult to control etc..
To achieve the above object, technical scheme is as follows:
A kind of denitrification dephosphorization coupled vibrations anoxic MBR device, including the intake pool, anaerobic pond, medium sediment pool, aerobic being sequentially communicated
Pond and anoxic pond；
Agitating device is equipped in anaerobic pond；The outlet at bottom of medium sediment pool surmounts bottom inlet phase of the pipeline with anoxic pond by sludge
Even；Filler and aerator are equipped in aerobic tank；MBR membrane module is equipped in anoxic pond, anoxic pond outlet at bottom is connected with sludge
Pipeline is handled, the outlet of Treatment of Sludge pipeline is divided into two branches, and one of branch passes through sludge reflux pipeline and anaerobic pond
Bottom be connected, another branch is connected with excess sludge pipeline；The discharge ends of MBR membrane module are connected with discharge pipe line.
Specifically, the agitating device is blender.
Preferably, the top of the MBR membrane module is connected with vibration device.It is further preferred that the vibration device packet
Connecting rod, crank and variable-frequency motor are included, connecting rod one end is connected with MBR membrane module, and the other end of connecting rod passes through crank and the frequency conversion
Motor is connected；Horizontal reciprocating movement is done using variable-frequency motor drive MBR membrane module of reciprocating vibration, controls fouling membrane.
Preferably, the intake pool is connected to anaerobic pond by inlet pipeline, and inlet pipeline is equipped with intake pump, and sludge is super
More pipeline surmounts pump equipped with sludge, and mud return line road is equipped with sludge reflux pump, is connected with draining pump on discharge pipe line.
Preferably, the filler is composite filling, elastic filler or floating stuffing, further preferably composite filling.
Preferably, the MBR membrane module be at least one of micro-filtration membrane module, hyperfiltration membrane assembly, dynamic film component, into
One step is preferably micro-filtration membrane module.
A kind of denitrification dephosphorization coupled vibrations anoxic MBR technique, including it is anaerobic phosphorus release process, medium sediment pool precipitation process, good
Oxygen nitrification operation, denitrification dephosphorization process, drainage procedure and spoil disposal process；
The anaerobic phosphorus release process is that sewage to be processed enters anaerobic pond, then with have Denitrifying Phosphate Accumulating Organisms activated sludge
It is sufficiently mixed carry out anaerobic phosphorus release；
The medium sediment pool precipitation process is that the muddy water mixed solution of anaerobic pond is sent into medium sediment pool, carries out mud-water separation, is separated into
Clear liquid and activated sludge, supernatant are sent into aerobic tank, and activated sludge surmounts pipeline through sludge and enters anoxic pond；
The aerobic nitrification process is the degradation that supernatant carries out aerobic nitrification and residual organic substances in aerobic tank；
The denitrification dephosphorization process is to receive to contain nitrogen, the mixed liquor of phosphorus from aerobic tank and contain anti-nitre from medium sediment pool
Change the sludge of polyP bacteria, carries out anoxic denitrification dephosphorization；
Drainage procedure is to filter to drain by MBR membrane module；
The spoil disposal process is that a part of sludge of anoxic pond is transmitted back to anaerobic pond to carry out releasing phosphorus, and another part is as remaining
Mud discharging.
Preferably, the dissolved oxygen concentration in the anaerobic phosphorus release process is lower than 0.2mg/L, hydraulic detention time 1-2h,
Anaerobic pond activated sludge concentration is 4000-6000mg/L；
The hydraulic detention time of medium sediment pool precipitation process is 30-45min, and the sludge quantity into anoxic pond accounts for medium sediment pool sludge total amount
30-50%；
Dissolved oxygen concentration is 2-3mg/L, hydraulic detention time 3-6h in the aerobic tank of aerobic nitrification process；
Denitrification dephosphorization process hydraulic detention time is 2-3h, and dissolved oxygen in anoxic tank concentration is less than 0.5mg/L, sludge in anoxic pond
Sludge reflux amount into anaerobic pond is 30-50%, and anoxic pond activated sludge concentration is 4000-6000mg/L；
The operation of MBR membrane module, which uses, opens the method for operation that 8min stops 2min, membrane flux 8-15LMH.
Compared to the prior art, the beneficial effects of the present invention are:
1. the present invention is for existing double sludge system multi stage precipitations and multistage reflux, process flow is complicated, cumbersome, and water outlet is not
Continuous flow double sludge denitrification dephosphorization process is combined with vibration anoxic MBR reactor, solves anti-nitre by the problems such as continuous
Change dephosphorization process nitrobacteria and polyP bacteria sludge age contradiction, while realizing process system continuous effluent, save carbon source, reduce energy
Consumption；
2. installing several sedimentation basins that MBR membrane module replaces former denitrifying phosphorus removal technique additional using the anoxic pond in water outlet front end, greatly
Width reduces land occupation, shortens process flow；Meanwhile the efficient crown_interception of film, maintain high concentration microorganism in MBR membrane module
Amount, improves reaction efficiency and volumetric loading, enhances the impact resistance of system, and long sludge age significantly reduces excess sludge
Amount, effluent quality are excellent；
3. anoxic pond MBR membrane module has evaded the conventional skill washed away using aeration and alleviate fouling membrane using the method for operation of vibration
Art, to maintain the environment of anoxic, using horizontal reciprocating movement, not only operation energy consumption is low, but also fouling membrane is effectively relieved；
4. present invention process and device process are simple, and low energy consumption, it can be achieved that advanced nitrogen dephosphorization, effluent quality is continuous and stablizes,
It is suitble to the town sewage of low ratio of carbon to ammonium, to push the engineering application of denitrification dephosphorization to provide strong technical support.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of denitrification dephosphorization coupled vibrations anoxic MBR device described in the embodiment of the present invention 1；
Fig. 2 is process flow diagram of the invention；
In figure: 1 is anaerobic pond, and 2 be medium sediment pool, and 3 be aerobic tank, and 4 be anoxic pond, and 5 be vibration device, and 6 be MBR membrane module, and 7 are
Filler, 8 be perforated pipe, and 9 be intake pump, and 10 surmount pump for sludge, and 11 be sludge reflux pump, and 12 be draining pump, and 13 be air blower,
14 be blender, and 15 be inlet pipeline, and 16 be discharge pipe line, and 17 be sludge reflux pipeline, and 18 surmount pipeline for sludge, and 19 be company
Bar, 20 be crank, and 21 be variable-frequency motor, and 22 be excess sludge pipeline, and 23 be intake pool, and 24 be Treatment of Sludge pipeline.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples, but is not limitation of the present invention.In Fig. 1
K1, K2, K3, K4, K5 are respectively first to cross the mouth of a river, second cross the mouth of a river, third and cross the mouth of a river, the 4th cross the mouth of a river, the 5th cross the mouth of a river, a,
B, c, d are respectively that the first water pipe, second water pipe, third excessively excessively crosses the water pipe excessively of water pipe, the 4th.Water inlet pipe, anaerobic pond, medium sediment pool,
Aerobic tank passes sequentially through K1, a, K2, b, K3, c, K4, d with anoxic pond and is connected to；MBR membrane module is equipped in anoxic pond, and with vibration
Dynamic device, therefore the anoxic pond of the present embodiment is alternatively referred to as the anoxic vibration pond MBR.MBR membrane module used in the present embodiment
Using conventional commercial product.
Embodiment 1
As shown in Figure 1, denitrification dephosphorization coupled vibrations anoxic MBR device of the invention, including intake pool 23, anaerobic pond 1, in sink
Pond 2, aerobic tank 3 and anoxic pond 4, and pass sequentially through first cross mouth of a river K1, first cross water pipe a, second cross mouth of a river K2, second cross water
Pipe b, third cross mouth of a river K3, third crosses water pipe c, the 4th mouth of a river K4 excessively, the 4th water pipe d connection excessively.Blender is equipped in anaerobic pond
14；The outlet at bottom of medium sediment pool 2 surmounts pipeline 18 by sludge and is connected with the bottom inlet of anoxic pond 4；It is equipped with and fills out in aerobic tank 3
Material 7 and aerator；MBR membrane module is equipped in anoxic pond 4,4 outlet at bottom of anoxic pond is connected with Treatment of Sludge pipeline 24, sludge
The outlet of processing pipeline 24 is divided into two branches, and one of branch passes through the bottom phase of sludge reflux pipeline 17 and anaerobic pond 1
Connection, another branch are connected with excess sludge pipeline 22；The discharge ends of MBR membrane module 6 cross mouth of a river K5 and draining by the 5th
Pipeline 16 is connected.
6 top of MBR membrane module is connected with vibration device 5, and the vibration device 5 includes connecting rod 19, crank 20 and becomes
Frequency motor 21,19 one end of connecting rod are connected with MBR membrane module 6, and the other end of connecting rod 19 passes through crank 20 and the variable-frequency motor 21
It is connected.Each component and its connection relationship of the vibration device use this field routine techniques, and details are not described herein again.
The intake pool 23 is connect with anaerobic pond 1 by inlet pipeline 15, and inlet pipeline 15 is equipped with intake pump 9, sludge
Surmount pipeline 18 and surmount pump 10 equipped with sludge, sludge reflux pipeline 17 is equipped with sludge reflux pump 11, connects on discharge pipe line 16
It is connected to draining pump 12.Filler in the present embodiment is composite filling, and MBR membrane module is micro-filtration membrane module.
The aerator is to provide oxygen to aerobic tank 3 comprising the perforated pipe 8 positioned at 3 bottom of aerobic tank, it should
Perforated pipe 8 is connected by pipeline with the air blower 13 being located at outside aerobic tank 3, is supplied using air blower 13 into aerobic tank 3.
The device uses the method for operation of continuous flow.Sewage releases phosphorus into anaerobic pond 1 through inlet pipeline 15, anaerobic pond 1
Mud mixture enters the precipitating of medium sediment pool 2, and the supernatant containing phosphorus and ammonia nitrogen enters aerobic tank 3 and nitrified, and contains denitrification
The medium sediment pool sludge of polyP bacteria surmounts pipeline 18 by sludge and enters anoxic pond 4, then receives in anoxic pond 4 and comes from aerobic tank
3 nitrate nitrogen source and the polyP bacteria sludge of medium sediment pool 2 realize the denitrogenation dephosphorizing of Denitrifying Phosphate Accumulating Organisms under anoxic conditions.
As shown in Fig. 2, denitrification dephosphorization coupled vibrations anoxic MBR technique of the invention, including anaerobic phosphorus release process, in sink
Pond precipitation process, aerobic nitrification process, denitrification dephosphorization process, drainage procedure and spoil disposal process；
It is that sewage to be processed enters anaerobic pond that the anaerobic pond, which releases phosphorus process, then dirty with the activity with Denitrifying Phosphate Accumulating Organisms
Mud is sufficiently mixed carry out anaerobic phosphorus release.
The medium sediment pool precipitation process is that the muddy water mixed solution of anaerobic pond is sent into medium sediment pool, carries out mud-water separation, separation
For supernatant and activated sludge, supernatant is sent into aerobic tank, and activated sludge surmounts pipeline through sludge and enters anoxic pond.
The aerobic nitrification process is that the supernatant of medium sediment pool enters progress aerobic nitrification and residual organic substances in aerobic tank
Degradation.
The denitrification dephosphorization process is to receive to contain nitrogen, the mixed liquor of phosphorus and containing from medium sediment pool from aerobic tank
The sludge of Denitrifying Phosphate Accumulating Organisms carries out anoxic denitrification dephosphorization.
Drainage procedure is to filter to drain by MBR membrane module；The spoil disposal process is by a part of sludge of anoxic pond
It is transmitted back to anaerobic pond to carry out releasing phosphorus, another part is discharged as excess sludge.
As shown in Figs. 1-2, carrying out practically process is as follows:
Anaerobic pond 1 releases phosphorus process, and the sewage in intake pool 23 crosses water pipe a by the first mouth of a river K1 excessively, first and is pumped into anaerobic pond 1,
It is sufficiently mixed stirring with the activated sludge of Denitrifying Phosphate Accumulating Organisms, dissolved oxygen concentration (DO) control is in 0.2mg/L hereinafter, hydraulic retention
Time (HRT) is 1-2h, and control anaerobic pond activated sludge concentration (MLSS) is 4000-6000mg/L.
The muddy water mixed solution of 2 precipitation process of medium sediment pool, anaerobic pond 1 is crossed in water pipe b entrance by the second mouth of a river K2 excessively, second
Heavy pond 2, hydraulic detention time 30-45min, 2 supernatant of medium sediment pool crosses mouth of a river K3 by third, third is crossed water pipe c and entered
Oxygen pond 3, the precipitating sludge of medium sediment pool 2 surmount pipeline 18 by sludge and are pumped into the anoxic vibration pond MBR, are input to anoxic vibration MBR
Sludge quantity in pond is the 30-50% of 2 sludge quantity of medium sediment pool.
Aerobic nitrification process, aerobic tank 7 are provided with composite filling, and by opening air blower 13, progress perforated pipe 8 is aerated,
Dissolved Oxygen concentration Control enters anoxic later and vibrates the pond MBR in 2-3mg/L, hydraulic detention time 3-6h.
Denitrification dephosphorization process, through the 4th cross mouth of a river K4, the 4th cross water pipe d receive from aerobic tank 3 containing nitrogen, phosphorus it is mixed
Liquid and the sludge containing Denitrifying Phosphate Accumulating Organisms from medium sediment pool 2 are closed, anoxic denitrification dephosphorization, the hydraulic retention of anoxic pond are carried out
Time is 2-3h, and dissolved oxygen concentration is less than 0.5mg/L, and anoxic pond activated sludge concentration is 4000-6000mg/L.
Anoxic vibrates the pond MBR drainage procedure, and anoxic vibrates the pond MBR setting two position and controls draining pump 12, MBR membrane module
Water after filter crosses mouth of a river K5 through discharge ends, the 5th in 6 and discharge pipe line 16 is discharged.
Spoil disposal process, the excessive anoxic for inhaling phosphorus vibrate the sludge in the pond MBR, and a part passes through 17 blowback of sludge reflux pipeline
It is sent to anaerobic pond 1 and is released phosphorus again, another part is discharged through excess sludge pipeline 22, is back to the sludge reflux of anaerobic pond 1
Amount control is in 30-50%.
It is process object with the sanitary sewage in certain campus, examines or check denitrification dephosphorization coupled vibrations anoxic MBR dress of the invention
Set the efficiency with the denitrification dephosphorization of technique and denitrogenation.
Influent quality and treatment effect are as shown in table 1, and related experiment parameter is as follows:
Sludge sludge age SRT=16-20d used in the denitrification dephosphorization coupled vibrations MBR technique of the present embodiment, entire technique
Hydraulic detention time HRT is 11.5h.
(1) anaerobic phosphorus release process: MLSS=4000-4500mg/L；DO≤0.2mg/L；HRT=2h；
(2) medium sediment pool precipitation process: HRT=30min, the 30% of medium sediment pool sludge quantity are transported in the anoxic vibration pond MBR；
(3) aerobic nitrification process: filler is composite filling；DO=2-3mg/L；HRT=6h；
(4) denitrification dephosphorization process: MLSS=4000-6000mg/L；DO≤0.5mg/L；HRT=3h；Sludge in anoxic pond returns
The ratio for flowing to anaerobic pond is 30%；The MBR method of operation: membrane flux 12LMH produces water 8min, stops 2min, the vibration frequency: 40
Secondary/min.Backwash frequency: 1 times/day.
1 denitrification dephosphorization coupled vibrations anoxic MBR Nitrogen/Phosphorus Removal of table
Can be seen that the device combined process from the data of table 1 is respectively 84%, 95.3% to the removal rate of COD, total phosphorus and ammonia nitrogen
With 88%, water quality indicator has had reached national urban wastewater treatment firm pollutant emission level-one A standard (GB18918-2002).
Excellent effluent quality has benefited from the efficient cutoff performance of MBR membrane module and strainability, makes to maintain height in MBR membrane module
Concentration content of microorganisms, treatment effeciency greatly improve, while passing through hydraulic detention time, dissolved oxygen, surmounting sludge quantity and reflux
Efficient denitrogenation dephosphorizing is realized in the control of sludge quantity.
It is characteristic of the invention that coupling denitrification dephosphorization process and anoxic MBR technique, Fig. 1 vibrates the shape of MBR using anoxic
Formula substitutes original anoxic pond and sedimentation basin, has played film high efficiency filter, high biology retains, the advantage of low occupied area.Together
Sample, the dotted box portion in Fig. 2 also equally can substitute original anaerobic pond and medium sediment pool, anaerobism using the anaerobism vibration pond MBR
The form for vibrating the pond MBR is consistent with anoxic vibration MBR form, is provided with MBR membrane module, vibration device and draining pump.
Claims (8)
1. a kind of denitrification dephosphorization coupled vibrations anoxic MBR device, which is characterized in that including be sequentially communicated intake pool, anaerobism
Pond, medium sediment pool, aerobic tank and anoxic pond；
Agitating device is equipped in anaerobic pond；The outlet at bottom of medium sediment pool surmounts bottom inlet phase of the pipeline with anoxic pond by sludge
Even；Filler and aerator are equipped in aerobic tank；MBR membrane module is equipped in anoxic pond, anoxic pond outlet at bottom is connected with sludge
Pipeline is handled, the outlet of Treatment of Sludge pipeline is divided into two branches, and one of branch passes through sludge reflux pipeline and anaerobic pond
Bottom be connected, another branch is connected with excess sludge pipeline；The discharge ends of MBR membrane module are connected with discharge pipe line.
2. denitrification dephosphorization coupled vibrations anoxic MBR device according to claim 1, which is characterized in that the MBR membrane module
Top be connected with vibration device.
3. denitrification dephosphorization coupled vibrations anoxic MBR device according to claim 2, which is characterized in that the vibration device
Including connecting rod, crank and variable-frequency motor, connecting rod one end is connected with MBR membrane module, and the other end of connecting rod passes through crank and the change
Frequency motor is connected.
4. denitrification dephosphorization coupled vibrations anoxic MBR device according to claim 1, which is characterized in that the intake pool with
Anaerobic pond is connected to by inlet pipeline, and inlet pipeline is equipped with intake pump, and sludge surmounts pipeline and surmounts pump, sludge equipped with sludge
Return line is equipped with sludge reflux pump, is connected with draining pump on discharge pipe line.
5. denitrification dephosphorization coupled vibrations anoxic MBR device according to claim 1, which is characterized in that the filler is group
Close filler, elastic filler or floating stuffing.
6. denitrification dephosphorization coupled vibrations anoxic MBR device according to claim 1, which is characterized in that the MBR membrane module
For at least one of micro-filtration membrane module, hyperfiltration membrane assembly, dynamic film component.
7. a kind of denitrification dephosphorization coupled vibrations anoxic MBR technique, which is characterized in that heavy including anaerobic phosphorus release process, medium sediment pool
Shallow lake process, aerobic nitrification process, denitrification dephosphorization process, drainage procedure and spoil disposal process；
The anaerobic phosphorus release process is that sewage to be processed enters anaerobic pond, then with have Denitrifying Phosphate Accumulating Organisms activated sludge
It is sufficiently mixed carry out anaerobic phosphorus release；
The medium sediment pool precipitation process is that the muddy water mixed solution of anaerobic pond is sent into medium sediment pool, carries out mud-water separation, is separated into
Clear liquid and activated sludge, supernatant are sent into aerobic tank, and activated sludge surmounts pipeline through sludge and enters anoxic pond；
The aerobic nitrification process is the degradation that supernatant carries out aerobic nitrification and residual organic substances in aerobic tank；
The denitrification dephosphorization process is to receive to contain nitrogen, the mixed liquor of phosphorus from aerobic tank and contain anti-nitre from medium sediment pool
Change the sludge of polyP bacteria, carries out anoxic denitrification dephosphorization；
Drainage procedure is to filter to drain by MBR membrane module；
The spoil disposal process is that a part of sludge of anoxic pond is transmitted back to anaerobic pond to carry out releasing phosphorus, and another part is as remaining
Mud discharging.
8. denitrification dephosphorization coupled vibrations anoxic MBR technique according to claim 7, which is characterized in that the anaerobic phosphorus release
Dissolved oxygen concentration in process is lower than 0.2mg/L, hydraulic detention time 1-2h, and anaerobic pond activated sludge concentration is 4000-
6000mg/L；
The hydraulic detention time of medium sediment pool precipitation process is 30-45min, and the sludge quantity into anoxic pond accounts for medium sediment pool sludge total amount
30-50%；
Dissolved oxygen concentration is 2-3mg/L, hydraulic detention time 3-6h in the aerobic tank of aerobic nitrification process；
Denitrification dephosphorization process hydraulic detention time is 2-3h, and dissolved oxygen in anoxic tank concentration is less than 0.5mg/L, sludge in anoxic pond
Sludge reflux amount into anaerobic pond is 30-50%, and anoxic pond activated sludge concentration is 4000-6000mg/L；
The membrane flux of MBR membrane module is 8-15LMH.
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