CN108217947A - A kind of batch-type control method of sewage disposal AO and AAO techniques - Google Patents
A kind of batch-type control method of sewage disposal AO and AAO techniques Download PDFInfo
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- CN108217947A CN108217947A CN201810152337.2A CN201810152337A CN108217947A CN 108217947 A CN108217947 A CN 108217947A CN 201810152337 A CN201810152337 A CN 201810152337A CN 108217947 A CN108217947 A CN 108217947A
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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
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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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/44—Time
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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
-
- 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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- 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)
- Activated Sludge Processes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a kind of sewage disposal AO and the batch-type control method of AAO techniques, including：Step 1：According to the design treatment ability of system and practical influent load, daily treated sewage process is divided into rational several cycles.Step 2：Aeration process is carried out, the biochemical function of the denitrogenation dephosphorizing of sewage disposal is realized by aeration process, is carried out at the same time the cyclic process of anaerobic-aerobic and Anoxic/Aerobic.Step 3：Carry out infall process.Step 4：Carry out Inlet and outlet water process.Step 5：Batch process.The present invention can integrate the advantages of AO and AAO techniques and batch-type are handled, and operate and control simple and convenient, can effectively prevent sludge loss, resist the too low influence of water inlet biological load, a flexible a processing unit function of reinforcing.Monitoring to needs and the seldom of equipment is performed, personnel's intervention operation can be completely disengaged in operational process, reduces operation and maintenance cost, is suitble to the newly-designed system of construction period, also is adapted for carrying out the system reform.
Description
Technical field
The present invention relates to sewage treatment field more particularly to the batch-type controlling parties of a kind of sewage disposal AO and AAO techniques
Method.
Background technology
The anaerobism of sewage treatment industry, aerobic abbreviation AO, anaerobism, anoxic, aerobic abbreviation AAO, traditional activated sludge process
The control methods of AO and AAO techniques be essentially divided into denitrogenation and the aspect functions of dephosphorization two.In both techniques, AAO works
Skill is applied than wide.Traditional AAO techniques remove phosphorus substantially by the cycle of anaerobic zone-aerobic zone；By anoxic zone-aerobic
Area recycles to remove nitrogen.Thus need the reflux of control sludge and mixed liquor.It needs to monitor inflow and outflow in actual motion
Water quality and water, anaerobic zone ORP, aerobic zone dissolved oxygen and sludge concentration, secondary settling tank sludge liquid level are discharged the indexs such as ammonia nitrogen to control
Regurgitant volume processed, inflow, aeration quantity.The metered quantity and execution system complexity that control system needs are all quite high, generally
Sewage plant be difficult to realize full-automatic and stablize, reliable operation.
Above-mentioned control process results in needing constantly to sentence and adjust during controlling various due to being a continuous process
Parameter, to meet the needs of processing procedure.The change of a certain parameter can all influence the corresponding change of other parameters during control.
Sludge loss and the water quality reaching standard of guarantee water outlet in operational process, and need to build huge two in order to prevent simultaneously
Heavy pond and sludge reflux pumping plant, this virtually increases the construction of system and operation cost.It intakes particularly with low biological load
Processing, traditional AO and AAO techniques seem helpless, and treatment effect is extremely difficult to preferably require.
Invention content
The purpose of the present invention：The batch-type control method of a kind of sewage disposal AO and AAO techniques is provided, automatic control can be relied on
System in the case where not needing to the measuring instrumentss of complexity and execution system, ensures to meet handle sewage disposal denitrogenation dephosphorizing
It is required that so that the operation of sewage plant and control system become extremely simple and controllable.It can neatly meet various operating modes simultaneously
The ability of existing sewage treatment facility is needed and given full play to, improves the shock resistance of system.
To achieve these goals, the technical scheme is that：
The batch-type control method of a kind of sewage disposal AO and AAO techniques, this method include at least following steps：
Step 1：According to the design treatment ability of system and practical influent load, daily treated sewage process is divided into reasonably
Several cycles.
Step 2：Aeration process is carried out, the biochemical function of the denitrogenation dephosphorizing of sewage disposal is realized by aeration process, simultaneously
Carry out the cyclic process of anaerobic-aerobic and anaerobic-aerobic, i.e. exteenal reflux and interior reflux.
Step 3：Carry out infall process.
Step 4：Carry out Inlet and outlet water process.
Step 5：Batch process.
The batch-type control method of above-mentioned sewage disposal AO and AAO technique, wherein, it is each to locate in the step 1
The chronomere Minute for managing cycle is calculated, and daily processing cycle is divided into 2 or more, the fixed cycles of less than 48.
The batch-type control method of above-mentioned sewage disposal AO and AAO technique, wherein, in the step 3, settled
Journey just waits for the sludge of biochemical reaction, and natural subsidence is got off under gravity, is formed in aerobic zone and sedimentation basin than thick
Supernatant.
The batch-type control method of above-mentioned sewage disposal AO and AAO technique, wherein, in the step 3, settled
The activated sludge that journey is got off again can be as the strain of cycle next time.
The present invention can integrate the advantages of AO and AAO techniques and batch-type processing, operate and control simple and convenient, while energy
It is effective to prevent sludge loss, resist the too low influence of water inlet biological load, it is flexible to strengthen a processing unit function.The present invention
Method to the monitorings of needs and perform the seldom of equipment, but very easily realize and automatically control.It can be complete in operational process
Disengaging personnel's intervention operation reduces operation and maintenance cost, is suitble to the newly-designed system of construction period, also is adapted for original system
It is transformed.The method treatment effect and economic performance of the present invention, has reached domestically leading level.
Specific embodiment
The batch-type control method of a kind of sewage disposal AO and AAO techniques, this method include at least following steps：
Step 1：According to the design treatment ability of system and practical influent load, daily treated sewage process is divided into reasonably
Several cycles.
Step 2：Aeration process is carried out, the biochemical function of the denitrogenation dephosphorizing of sewage disposal is realized by aeration process, simultaneously
Carry out the cyclic process of anaerobic-aerobic and anaerobic-aerobic, that is, usually said outer exteenal reflux and interior reflux.It to open simultaneously
Open aeration and various underwater plug-flows, mixing plant.Since inflow is constant during this, the water quality of water inlet becomes substantially
Change little, the mud position control of the proportioning that can easily realize various reflux, the aeration quantity for controlling Aeration fan and secondary settling tank.
Once into this process, the operating status of various equipment is substantially without change.Only need first
It is secondary to adjust various parameters, it is just run later by this parameter.This this process caused becomes fairly simple and easy.
Step 3：Carry out infall process.System almost all of equipment is all off this process from inlet water to outlet water.
It, also should be out of service if there is secondary settling tank behind Biochemistry Reaction System.
Step 4：Carry out Inlet and outlet water process.This process inlet water lifting pumps is opened, remaining equipment stops, may including system
Some stirrings, aeration, reflux, flow pulling equipment, primary sedimentation tank and secondary settling tank.The flow of internal system is formed by the flow of water inlet
Inside liquid level height difference flowing or pass through it is various pump discharge.Since water outlet position is behind system, and by infall process
Afterwards, discharge is exactly the supernatant settled, so that system can give full play to the potentiality of system pool appearance, relatively easily
Meet the needs of sedimentation function.
Step 5：Batch process, this process can merge with infall process.For example, can increase infall process when
Between, increase effect of settling reduce the sewage quantity handled daily simultaneously；The time of infall process can also be shortened, meeting sedimentation effect
Fruit increases the sewage quantity cycle-index that handles daily to increase daily treating capacity simultaneously.
In the step 1, chronomere's Minute of each processing cycle is calculated, and daily processing cycle can divide
Fixed cycles into below 2 or more 48.The number of cycle should not be excessive, is advisable with daily several to dozens of.It can root
The size of the sewage quantity of each circular treatment is determined according to the ability of the water of daily actual treatment, water quality and inlet water lifting pumps.
In the step 3, infall process just waits for the sludge of biochemical reaction natural subsidence under gravity
Get off, formed in aerobic zone and sedimentation basin than thick supernatant, to ensure that water outlet parameter can reach design standard.
In the step 3, activated sludge that infall process is got off again can be as the strain of cycle next time, while energy
In the case of enough preventing influent load too low, sludge loss and the phenomenon that causing system that can not meet normal processing, occur.
Specific embodiment：
Common AO sewage disposal systems, 100 ton day of design treatment water.System has into water sump and elevator pump, regulating reservoir
And elevator pump, anaerobic zone, anoxic zone, aerobic zone, sedimentation basin, Aeration fan, clarifier sludge reflux pump, aerobic zone mixed liquor return
The equipment such as stream pump.
Step 1：Daily 16 cyclic processes are divided the system into, each cyclic process handles substantially 5 tons or so of water.Often
It is 80 tons or so total.
Step 2：Aeration process.Aeration fan is opened, while opens sludge reflux and mixed-liquor return, passes through valve tune
It is whole to arrive suitable position.Next time, operation can not need to change.Aeration 45 minutes.
Step 3：Infall process.Stop so equipment is run, including be aerated, intake water outlet and reflux.Static 1 hour 50
Point.This process and batch process merge, meanwhile, it needs that the time of infall process can be changed i.e. when adjustment processing water
It can.
Step 4：Inlet and outlet water process.Inlet water lifting pumps are opened, including sump elevator pump and regulating reservoir elevator pump.It utilizes
Water-in and water-out liquid level difference elevation is discharged.25 minutes water-in and water-out time.
Since the good Nitrogen/Phosphorus Removal of AO and AAO techniques is utilized, and using sequence in the rational of method of the present invention
Batch control technology, so the requirement to the control of control system is little.The various monitorings needed and executive component are fewer, behaviour
Work and control will greatly simplify.
It is carried out simultaneously as each process of system is substep, each step can be adjusted and be controlled, in this way
With regard to can suitably adjust to meet the needs of processing procedure according to the concrete condition of system.
Using the huge processing volume of system, stable sedimentation function is realized, can suitably reduce primary sedimentation tank and secondary settling tank
Design capacity or cancel sedimentation basin, reducing the construction costs.
Infall process leaves a large amount of activated sludge, as the strain of cycle next time, can effectively resist influent load
Too low influence and prevent sludge loss.
The processing standard of the method for the present invention treated sewage can reach similary AO and AAO systems.And control it is simple,
Reliably, economy, shock resistance, applied widely.
In conclusion the present invention can integrate the advantages of AO and AAO techniques and batch-type processing, operation and the simple side of control
Just, while it can effectively prevent sludge loss, resist the too low influence of water inlet biological load, it is flexible to strengthen processing unit work(
Energy.The method of the present invention is to the monitorings of needs and performs the seldom of equipment, but very easily realizes and automatically controls.In operational process
It can completely disengage personnel's intervention operation, reduce operation and maintenance cost, be suitble to the newly-designed system of construction period, also be adapted for pair
Original system is transformed.The method treatment effect and economic performance of the present invention, has reached domestically leading level.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every utilization
The equivalent structure transformation that present specification is made, directly or indirectly with the technology neck for being attached to other Related products
Domain is included within the scope of the present invention.
Claims (4)
1. a kind of batch-type control method of sewage disposal AO and AAO techniques, it is characterised in that：This method includes at least following step
Suddenly：
Step 1：According to the design treatment ability of system and practical influent load, daily treated sewage process is divided into reasonably
Several cycles；
Step 2：Aeration process is carried out, the biochemical function of the denitrogenation dephosphorizing of sewage disposal is realized by aeration process, is carried out at the same time
The cyclic process of anaerobic-aerobic and anaerobic-aerobic, i.e. exteenal reflux and interior reflux；
Step 3：Carry out infall process；
Step 4：Carry out Inlet and outlet water process；
Step 5：Batch process.
2. the batch-type control method of sewage disposal AO according to claim 1 and AAO techniques, it is characterised in that：Institute
In the step 1 stated, the chronomere Minute of each processing cycle is calculated, daily processing cycle be divided into 2 or more, 48 with
Under fixed cycles.
3. the batch-type control method of sewage disposal AO according to claim 1 and AAO techniques, it is characterised in that：Institute
In the step 3 stated, infall process just waits for the sludge of biochemical reaction, and natural subsidence is got off under gravity, in aerobic zone
It is formed with sedimentation basin than thick supernatant.
4. the batch-type control method of sewage disposal AO according to claim 1 and AAO techniques, it is characterised in that：Institute
In the step 3 stated, the activated sludge that infall process is got off again can be as the strain of cycle next time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810152337.2A CN108217947A (en) | 2018-02-14 | 2018-02-14 | A kind of batch-type control method of sewage disposal AO and AAO techniques |
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| CN201810152337.2A CN108217947A (en) | 2018-02-14 | 2018-02-14 | A kind of batch-type control method of sewage disposal AO and AAO techniques |
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| CN108217947A true CN108217947A (en) | 2018-06-29 |
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