CN109607788A - One kind being based on modified form A2The rural decentralized wastewater integrated processing system of/O and MBR technology - Google Patents
One kind being based on modified form A2The rural decentralized wastewater integrated processing system of/O and MBR technology Download PDFInfo
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- CN109607788A CN109607788A CN201811634772.5A CN201811634772A CN109607788A CN 109607788 A CN109607788 A CN 109607788A CN 201811634772 A CN201811634772 A CN 201811634772A CN 109607788 A CN109607788 A CN 109607788A
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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
- C02F3/308—Biological phosphorus removal
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Water Supply & Treatment (AREA)
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Abstract
The invention discloses one kind to be based on modified form A2The rural decentralized wastewater integrated processing system of/O and MBR technology, including conditioning tank of intaking, anaerobic pond, anoxic pond, aerobic tank, membrane cisterna, water pot and anaerobic jar out, the water inlet conditioning tank is connect with the anaerobic pond and the anoxic pond respectively, the anaerobic pond, the aerobic tank, it is sequentially connected between the membrane cisterna and the water pot out, reflux pump 1 is equipped in the membrane cisterna, for mixed liquor to be back to the anoxic pond, reflux pump 2 is equipped in the anoxic pond, for mixed liquor to be back to the anaerobic pond, the anoxic pond, aeration head is equipped in the aerobic tank and the membrane cisterna, the membrane cisterna is additionally provided with mud discharging mouth, it is connect with the anaerobic jar, for to its discharge unit sludge, it carries out anaerobic hydrolysis and produces acid, the anaerobic jar outlet end and anaerobic pond water inlet end reflux connect.The present invention has the characteristics that efficiently to go to denitrogenate pollutants such as phosphorus, low energy consumption, stable and easy to operate.
Description
Technical field
The present invention relates to one kind to be based on modified form A2The rural decentralized wastewater integrated processing system of/O and MBR technology belong to
In rural sewage treatment technical field.
Background technique
China's town domestic sewage mainly uses centralized processing mode.The vast rural areas, due to terrain, traffic item
Part and the features such as being laid out of living, sewage centralized collection, centralized processing difficulty are larger, using decentralized type sewage tupe, to agriculture
Village sanitary sewage collections, treatment in situ, qualified discharge in situ are the processing sides of a kind of economical and effective, suitable country practical situation
Method.Therefore, decentralized type sewage processing technique becomes the key technology of water pollution in countryside protection and water environment treatment.But China
In terms of the research and development of existing sewage disposal technology concentrate on centralized town sewage treatment technology, for decentralized type sewage processing technique
Research and development and application are still at an early stage, it is especially desirable to solve technical validity, advance, economy, integration of equipments, series
Change and the problems such as stability.
MBR (membrane bioreactor) device, in conjunction with UF membrane principle and activated sludge process, by bioreactor and membrane module
Two unit compositions, bioreactor mainly remove removal organic polluter, and membrane module retains activated sludge and filtering water outlet.
MBR device is efficient with mud-water separation, stable effluent quality, impact load ability are strong, sludge age (SRT) is longer and can be with stop
Time (HRT) independent control, denitrification effect are significant, device characteristics of compact layout, save the characteristics of land occupation.These features determine its
The development prospect of China's decentralized type sewage process field.A2/ O technique is a kind of typical dephosphorization and denitrification process, biological respinse
Pond is by anaerobism, anoxic and aerobic three Duan Zucheng, its main feature is that anaerobism, anoxic and aerobic three sections of definite functions, the division is clearly demarcated, can
It is required according to flow condition and water outlet, artificially creates and control three sections of space-time ratio and operating condition, as long as carbon source is sufficient,
Relatively high nitric efficiency can be reached as needed.But traditional A2When/O technique is used for rural sewage treatment, since rural area is raw
Sewage quality variation living greatly, the universal features such as relatively low, suspended matter component proportion height of carbon-nitrogen ratio, can not achieve good denitrogenation
Effect.
Summary of the invention
The technical problem to be solved by the invention is to provide one kind to be based on A2/ O and MBR technology improvement, it can be achieved that efficient
It goes to denitrogenate the pollutants such as phosphorus, low energy consumption, stable and easy to operate country sewage integrated processing system.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
One kind being based on modified form A2The rural decentralized wastewater integrated processing system of/O and MBR technology, including water inlet are adjusted
Pond, anaerobic pond, anoxic pond, aerobic tank, membrane cisterna, go out water pot and anaerobic jar, the water inlet conditioning tank respectively with the anaerobic pond
And the anoxic pond connection, it is sequentially connected between the anaerobic pond, the aerobic tank, the membrane cisterna and the water pot out,
It is equipped with reflux pump 1 in the membrane cisterna, for mixed liquor to be back to the anoxic pond, is equipped with reflux pump 2 in the anoxic pond, uses
In mixed liquor is back to the anaerobic pond, it is equipped with aeration head in the anoxic pond, the aerobic tank and the membrane cisterna, institute
It states membrane cisterna and is additionally provided with mud discharging mouth, connect with the anaerobic jar, for carrying out anaerobic hydrolysis and producing acid, institute to its discharge unit sludge
It states anaerobic jar outlet end and anaerobic pond water inlet end reflux connects.
Further, it is divided into multistage using partition along current direction in the aerobic tank, aeration head is close in the anoxic pond
Degree is minimum, and leading portion density is maximum in the aerobic tank, is sequentially reduced to back segment, and minimum density is greater than aeration in the anoxic pond
Head density, aeration head density and aerobic tank middle section density are close in the membrane cisterna.
Further, the aerobic tank uses intermittent aerating mode.
Further, the outlet pipe between the membrane cisterna and the water pot out is equipped with vacuum meter, the membrane cisterna inner membrane member
Using intermittent duty mode, it is separately connected between the membrane cisterna and the water pot out using suction pump and backwashing pump.
Further, the water inlet conditioning tank water inlet pipe is equipped with disk filter, is equipped with ultra-fine grid in pond.
Further, using elevator pump and triple valve and the anaerobic pond and the anoxic pond in the water inlet conditioning tank
It is separately connected.
Further, it is carried out between the anaerobic pond, the anoxic pond, the aerobic tank and the membrane cisterna by partition
It separates, sewage realizes gravity flow by each pit level difference between pond, is also equipped with liquidometer and liquid level automatic control system in each pond.
Advantageous effects of the invention:
(1) dual reflux pumping system is used in the present invention, and there is triple role: first is that sludge reflux, to guarantee in reactor
The uniformity of biomass；Second is that providing electron acceptor-nitrate nitrogen necessary to anti-nitration reaction to anoxic pond；Third is that detesting
It is realized in oxygen pond and releases phosphorus, and then preferably inhale phosphorus in aerobic tank.Mixed liquor reflux not only influences Nitrogen/Phosphorus Removal, but also
The power consumption for affecting entire process system, is a very important parameter, and the double back streaming system of the technical program is effective
Alleviate tradition A2Denitrification liquid passes back into anaerobic pond and nitrate is caused to release polyP bacteria the inhibiting effect of phosphorus in/O technique, thus
The problem of limitation system entirety phosphor-removing effect；
(2) the mud mixed liquid reflux after anaerobic fermentation is carried out in the present invention using anaerobic jar, is on the one hand realized remaining dirty
Mud decrement reduces the surplus sludge volume of system discharge, on the other hand, by exploitation sludge internal carbon source, can supplement water-inlet carbon source,
It solves the problems, such as denitrifying carbon source deficiency, improves the total nitrogen removal effect of system water outlet；
(3) water inlet conditioning tank can equally alleviate that denitrifying carbon source is insufficient to ask using water inlet distribution system in the present invention
Topic；
(4) present invention is to different aeration intensities and aeration mode is used in more ponds, in conjunction with the actual demand in each pond, anoxic
Pond only needs to be stirred mixed liquor in pond, and aerobic tank leading portion needs more dissolved oxygen because of ammonia nitrogen and oxidation operation, good
Oxygen pond end dissolved oxygen demand is decreased obviously, and membrane cisterna, with decelerating membrane pollution, can reduce operation energy consumption, and aerobic by aeration
The change of gradient of pond dissolved oxygen concentration also helps denitrification and maintains microbial activity, guarantees wastewater treatment efficiency, and good
Intermittent aerating mode is used in oxygen pond, system is continuous operation, and Inlet and outlet water is continuous flow, even if aerobic tank dissolved oxygen stops exposing
Gas a small amount of time can still maintain the > concentration of 2.5mg/L, and aerobic tank organic matter degradation effect is not substantially reduced, and intermittent aerating is not
Operation energy consumption is only advantageously reduced, and is conducive to sludge settling of floccus and anti-nitration reaction, water outlet total nitrogen removal can be improved
Effect.
Detailed description of the invention
Fig. 1 is structure connection diagram in embodiment.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, to be based on A in the present invention2/ O and MBR technology improvement after rural area rural decentralized wastewater integration at
Reason system, including water inlet conditioning tank, anaerobic pond, anoxic pond, aerobic tank, membrane cisterna, out water pot and anaerobic jar.Country sewage passes through row
Pipe network enters water inlet conditioning tank, the ultra-fine grid of setting in water inlet conditioning tank, to remove the fine suspension in sewage.Water inlet is adjusted
It saves and disk filter is installed on the water inlet pipe of pond, to intercept tiny, fibrous suspended matter from source.Elevator pump is set in conditioning tank, together
When equipped with floating ball control solenoid valve opening and closing, realize elevator pump low liquid level protection, elevator pump water outlet pass through outlet pipe and three
It is logical to be separately connected anaerobic pond and anoxic pond, sewage in conditioning tank is all promoted to anaerobic pond, it, can when relatively low into carbon-nitrogen ratio
Part of contaminated water (water inlet of 60%-80%) is promoted to anaerobic pond, part of contaminated water (water inlet of 20%-40%) is promoted to anoxic
Pond, to effectively improve the phenomenon of anoxic denitrification carbon source deficiency.
Anaerobic pond, aerobic tank, is separated by partition between membrane cisterna anoxic pond, passes through outlet pipe between membrane cisterna and out water pot
Connection.Sewage is poor by each pit level, and flow by gravity enters latter pond.Mixed liquor reflux pump 2, setting in membrane cisterna are set in anoxic pond
Nitrification liquid in membrane cisterna is passed back into mixed liquor in anoxic pond and anoxic pond and passes back into anaerobism by mixed liquor reflux pump 1, pump 1 and pump 2
Pond, i.e. double back streaming system are equipped with flowmeter on each pond outlet pipe, to realize the adjusting of reflux ratio.Anoxic pond, aerobic tank, film
Aeration head packing density is variant in pond, is aerated by power-adjustable air blower, gas is arranged between air blower and aerating system
Flowmeter, to adjust aeration quantity.Anoxic pond aeration head packing density is minimum；Aerobic tank is divided into 3-5 sections using partition, and sewage is according to this
Each section is flowed through, is flowed in unidirectional line style, aerobic tank leading portion aeration head density is larger, and back segment aeration head density is smaller, but is still greater than
Anoxic pond aeration head density；Membrane cisterna aeration head packing density is close with aerobic tank middle section aeration head packing density.Aerobic tank aeration
Mode uses intermittent aerating.Anaerobic pond, anoxic pond and aerobic tank are designed as water by installation liquidometer and automatic control system
Power residence time (HRT) adjustable method of operation.
Membrane cisterna is the biological reaction pool that the biodegradation of membrane separation technique and bioreactor is integrated in one, in pond
Equipped with PVDF polysulfone hollow fiber ultrafiltration membrane system, to realize mud-water separation.Bottom of pond is equipped with aerator, configures power-adjustable air blast
Machine is aerated.Membrane cisterna bottom setting mud discharging mouth is controlled for discharging excess sludge, sludge pipe by valve.Membrane cisterna and water pot out
Between be equipped with suction pump and backwashing pump.Vacuum meter is arranged in outlet pipe between membrane module and suction pump, runs for monitoring device
The real-time change of membrane module transmembrane pressure (TMP) in journey.Suction pump controls start and stop by electromagnetic relay, i.e., between membrane module uses
It has a rest the method for operation, to meet the physical cleaning of membrane module in device operational process, open/it is 8min/2min between the stopping time.In the pumping
Physics backwash is carried out to membrane module by backwashing pump in sucking pump 2min out of service.Water pot is discharged for storing membrane cisterna out,
It provides membrane module physics anti-scouring water simultaneously, is equipped with low liquid level floating ball in water pot out, controls the start and stop of backwashing pump.
The excess sludge of membrane cisterna discharge enters in individual anaerobic jar, carries out anaerobic hydrolysis and produces acid, and will be after anaerobic fermentation
Mud mixed liquid be back to anaerobic pond water inlet end.
It is above-mentioned to be based on modified form A2The rural decentralized wastewater integrated processing system course of work of/O and MBR technology:
Sewage enters anaerobic pond by elevator pump in conditioning tank, mixes with the anoxic pond mixed liquor of mixed liquor reflux pump 2；Through
From anoxic pond is flowed into, the membrane cisterna mixed liquor promoted with mixed liquor reflux pump 1 mixes mixed liquor after anaerobic biochemical treatment, occurs anti-
Nitration reaction, anoxic pond water outlet gravity flow enter aerobic tank, and gradually plug-flow flows through each gallery；Micro-pore aeration is arranged in aerobic bottom of pond portion
Disk intermittent aerating, to guarantee the suitable dissolved oxygen conditions of biochemical reaction；Aerobic tank water outlet flows into membrane cisterna certainly；In membrane cisterna, through film
After component separation, treated clear water enters water pot by suction pump, and the part mixed liquor of membrane cisterna passes through mixed liquor reflux pump 1
It is back in anoxic pond.
It wherein, is Q from the sewage quantity that conditioning tank enters anaerobic pond, the mixed liquor regurgitant volume that membrane cisterna is back to anoxic pond is Q,
The mixed liquor regurgitant volume that anoxic pond is back to anaerobic pond is 0.5Q, and Q represents sewage load, is 10m3/d.Anaerobism tank waterpower stops
Staying the time is 2h, and anoxic pond hydraulic detention time is 4h, aerobic tank hydraulic detention time 6h.Aerobic tank aeration intensity is gas-water ratio
10:1, being aerated/stop the exposure time is 1h/1h.Membrane cisterna aeration intensity is gas-water ratio 15:1, suction pump opens/and it is 8min/ between the stopping time
2min.Physics backwash is carried out to membrane module by backwashing pump in 2min out of service.It is main in water inlet in the application example
It is (50-200) mg/L, SS is (30-100) mg/L, NH that water quality indicator, which is COD,4 +- N is that (10-30) mg/L, TN are (15-40)
Mg/L and TP is (1-3) mg/L.
The present invention is by A2/ O technique and MBR technique combine, and not only reduce the operation energy consumption of system, have nitrification, anti-nitre
The stages such as change, synchronous nitration and denitrification, denitrification dephosphorization, and occupied area is small, constructs compact, easy to operate, activated sludge
In systems after domestication and culture in one month, stable effluent quality reaches " town sewage plant pollutant emission standard " one
Grade A standard.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. one kind is based on modified form A2The rural decentralized wastewater integrated processing system of/O and MBR technology, characterized in that including into
Water conditioning tank, anaerobic pond, anoxic pond, aerobic tank, membrane cisterna, go out water pot and anaerobic jar, the water inlet conditioning tank respectively with it is described
Anaerobic pond and anoxic pond connection, between the anaerobic pond, the aerobic tank, the membrane cisterna and the water pot out successively
Connection, the membrane cisterna is interior to be equipped with reflux pump 1, for mixed liquor to be back to the anoxic pond, is equipped with reflux in the anoxic pond
Pump 2, for mixed liquor to be back to the anaerobic pond, is equipped with exposure in the anoxic pond, the aerobic tank and the membrane cisterna
Gas head, the membrane cisterna are additionally provided with mud discharging mouth, connect with the anaerobic jar, for carrying out anaerobic hydrolysis to its discharge unit sludge
Acid is produced, the anaerobic jar outlet end and anaerobic pond water inlet end reflux connect.
2. according to claim 1 a kind of based on modified form A2The rural decentralized wastewater integrated treatment system of/O and MBR technology
System, characterized in that is divided into multistage using partition along current direction in the aerobic tank, aeration head density is most in the anoxic pond
Small, leading portion density is maximum in the aerobic tank, is sequentially reduced to back segment, and minimum density is close greater than aeration head in the anoxic pond
It spends, aeration head density and aerobic tank middle section density are close in the membrane cisterna.
3. according to claim 1 a kind of based on modified form A2The rural decentralized wastewater integrated treatment system of/O and MBR technology
System, characterized in that the aerobic tank uses intermittent aerating mode.
4. according to claim 1 a kind of based on modified form A2The rural decentralized wastewater integrated treatment system of/O and MBR technology
System, characterized in that the outlet pipe between the membrane cisterna and the water pot out is equipped with vacuum meter, between the membrane cisterna inner membrane member uses
Have a rest the method for operation, the membrane cisterna and it is described go out water pot between be separately connected using suction pump and backwashing pump.
5. according to claim 1 a kind of based on modified form A2The rural decentralized wastewater integrated treatment system of/O and MBR technology
System, characterized in that the water inlet conditioning tank water inlet pipe is equipped with disk filter, is equipped with ultra-fine grid in pond.
6. according to claim 1 a kind of based on modified form A2The rural decentralized wastewater integrated treatment system of/O and MBR technology
System, characterized in that distinguished in the water inlet conditioning tank using elevator pump and triple valve and the anaerobic pond and the anoxic pond
Connection.
7. according to claim 1 a kind of based on modified form A2The rural decentralized wastewater integrated treatment system of/O and MBR technology
System, characterized in that it is separated between the anaerobic pond, the anoxic pond, the aerobic tank and the membrane cisterna by partition,
Sewage realizes gravity flow by each pit level difference between pond, is also equipped with liquidometer and liquid level automatic control system in each pond.
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Cited By (8)
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| CN110734139A (en) * | 2019-10-25 | 2020-01-31 | 博天环境集团股份有限公司 | Membrane bioreactor and sewage treatment process |
| CN110950434A (en) * | 2019-11-21 | 2020-04-03 | 博天环境集团股份有限公司 | MBR sewage treatment system and control method thereof |
| CN111138038A (en) * | 2020-01-17 | 2020-05-12 | 生态环境部华南环境科学研究所 | Photovoltaic-driven rural domestic sewage integrated treatment system and treatment method |
| CN111170586A (en) * | 2020-02-24 | 2020-05-19 | 大禹环保（天津）有限公司 | Control room of water treatment integrated equipment |
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| CN112479366A (en) * | 2020-09-28 | 2021-03-12 | 河南科技大学 | MBR system mixed liquid backflow and dissolved oxygen control method |
| CN112582763A (en) * | 2019-09-30 | 2021-03-30 | 松下能源(无锡)有限公司 | Automatic electrolyte supply device for vacuum degassing and method for supplying electrolyte by using same |
| CN113912186A (en) * | 2021-11-10 | 2022-01-11 | 天津壹新环保工程有限公司 | Low-energy-consumption assembly type rural sewage treatment device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112582763A (en) * | 2019-09-30 | 2021-03-30 | 松下能源(无锡)有限公司 | Automatic electrolyte supply device for vacuum degassing and method for supplying electrolyte by using same |
| CN112582763B (en) * | 2019-09-30 | 2023-09-15 | 松下能源(无锡)有限公司 | Automatic vacuum degassing electrolyte supply device and method for supplying electrolyte by using same |
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| CN110950434A (en) * | 2019-11-21 | 2020-04-03 | 博天环境集团股份有限公司 | MBR sewage treatment system and control method thereof |
| CN111138038A (en) * | 2020-01-17 | 2020-05-12 | 生态环境部华南环境科学研究所 | Photovoltaic-driven rural domestic sewage integrated treatment system and treatment method |
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| CN111333190A (en) * | 2020-04-08 | 2020-06-26 | 苏州道藤环保科技有限公司 | Batch water inlet continuous water outlet sewage treatment device and treatment method |
| CN112479366A (en) * | 2020-09-28 | 2021-03-12 | 河南科技大学 | MBR system mixed liquid backflow and dissolved oxygen control method |
| CN113912186A (en) * | 2021-11-10 | 2022-01-11 | 天津壹新环保工程有限公司 | Low-energy-consumption assembly type rural sewage treatment device and method |
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