CN208454610U - A kind of intensified denitrification and dephosphorization circulating biological membranous system for sanitary sewage disposal - Google Patents
A kind of intensified denitrification and dephosphorization circulating biological membranous system for sanitary sewage disposal Download PDFInfo
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Abstract
The utility model relates to the intensified denitrification and dephosphorization circulating biological membranous systems for sanitary sewage disposal, including with the denitrogenation quadruple mechanism of programable controller system communication connection, the dual mechanism of dephosphorization and reflux mechanism, denitrogenation quadruple mechanism includes pre-denitration pond, fixed filler anoxic pond, carrier flow aerobic tank and fixed filter bed pond respectively；The dual mechanism of dephosphorization includes sludge-tank and sedimentation basin；Reflux mechanism includes sludge reflux mechanism and nitrification liquid reflux mechanism.Sedimentation basin base sludge mixed liquor is recycled to pre-denitration pond and sludge-tank through the sludge reflux mechanism, and the nitrification liquid of fixed filter bed pond outflow is recycled to fixed filler anoxic pond through nitrification liquid reflux mechanism.Thus, the utility model uses quadruple strengthened denitrification function and dual reinforced phosphor-removing function, it can stablize and guarantee nitrogen, tp removal rate 90% or more, in conjunction with circulating biological membranous system, liquid is adjusted without additional activated sludge, carbon source and pH, solves the problems such as old technique operation is complicated, cost energy consumption is high.
Description
Technical field
The utility model belongs to sanitary sewage disposal technical field more particularly to a kind of reinforcing for sanitary sewage disposal
Denitrogenation dephosphorizing circulating biological membranous system.
Background technique
Sanitary sewage is one of the reason of causing water environment pollution, and causes the major reason of lake eutrophication.?
At present in domestic sewage treatment process, the bad problem of generally existing ammonia nitrogen, total nitrogen, total tp removal rate.
Chinese patent CN201710402701.1 discloses a kind of nitrification-DEAMOX technique to city domestic sewage denitrogenation
The starting and control method of processing, essential core are to pass through additional suitable bacterium in intermittent activated sludge treatment reactor
The activated sludge of kind, meets denitrifying ammoxidation and short distance nitration anaerobic ammonia oxidation process, to reach the removal nitrogenous dirt of sewage
Contaminate object.The technology response procedures control program complexity, and electric-controlled system fault point is more, actual operation operating difficulties.Furthermore, it is desirable to not
Disconnected to add carbon source and sludge strain, later period O&M cost increases.In addition, its short distance nitration Anammox denitrification process for using
It is still immature, it is difficult to the phenomenon that avoiding sanitary sewage low C/N, and then be difficult to maintain to stablize short distance nitration, from being unable to detesting
Anaerobic ammonium oxidation system provides stable nitrous matrix, causes denitrification effect unstable, and anaerobic ammoniation bacterium, and the speed of growth is slow,
It is more sensitive to environment temperature, it is more difficult to which that cultivation survival, practical application value are low.
Chinese patent CN201710502347.X discloses a kind of integrated sewage treating apparatus and its treatment process, the skill
Art uses integrated sewage disposal, and technique not can guarantee front end anaerobism and the lower dissolution oxygen environment of anoxic, to can not protect
It demonstrate,proves and stablizes denitrogenation.Excess sludge not can be carried out good mud-water separation, can stir sedimentation basin bottom instead in precipitating bottom of pond portion discharge
Portion's settling phase.Without disinfection after sedimentation basin, the stringent standard control of environment pathogenic bacteria at this stage not can guarantee.In view of above-mentioned
Defect, the designer are actively subject to research and innovation, to found a kind of intensified denitrification and dephosphorization circulation for sanitary sewage disposal
Formula biofilm system makes it with more the utility value in industry.
Utility model content
In order to solve the above technical problems, the purpose of the utility model is to provide a kind of improvement nitrogen removal rate is unstable, de-
Nitrogen is ineffective, reflux adjusts the inaccurate, later period and adds that carbon source is at high cost, is difficult to cope with variation water quality C/N ratio, antigen water slug
The intensified denitrification and dephosphorization circulating biological membranous system for sanitary sewage disposal for the disadvantages of load forces are weak.The utility model technology
Scheme is as follows:
A kind of intensified denitrification and dephosphorization circulating biological membranous system for sanitary sewage disposal, including respectively with programmable control
Denitrogenation quadruple mechanism, the dual mechanism of dephosphorization and the reflux mechanism of device system communication connection processed, denitrogenation quadruple mechanism is by sewage
Flow direction includes the pre-denitration pond being sequentially communicated, fixed filler anoxic pond, carrier flow aerobic tank and fixed filter bed pond, the dephosphorization
Dual mechanism includes sludge-tank and sedimentation basin, and the reflux mechanism includes sludge reflux mechanism and nitrification liquid reflux mechanism, wherein
The mud mixed liquid of water outlet dephosphorization after clarifier sludge excludes in the fixed filter bed pond, sedimentation basin outflow is returned through the sludge
Stream mechanism is recycled to pre-denitration pond and sludge-tank, and the nitrification liquid of the fixed filter bed pond outflow is recycled to through nitrification liquid reflux mechanism
Fixed filler anoxic pond.
In the preferred embodiments of the present invention, the pre-denitration pond is divide into upper part and lower part structure, and upper part-structure is
Flow adjustment portion, lower part-structure are pre- denitration sand setting portion, are equipped with first flow on pre-denitration pond top and buffer weir.
In the preferred embodiments of the present invention, it is provided with and programmable controller in the fixed filler anoxic bottom of pond portion
The diving mixing device of system communication connection is equipped with second flow on fixed filler anoxic pond top and buffers weir.
In the preferred embodiments of the present invention, the fixed filler anoxic pond is good through the first diversion pipe connection carrier flow
Oxygen pond is provided with the first air inlet pipeline on the first diversion pipe, is provided on the first air inlet pipeline and programable controller system
Control the first control valve of connection.
In the preferred embodiments of the present invention, carrier flow aerobic tank rear end is provided with fixed filter bed pond, solid
Determine filter bed pond and nitrification liquid reflux mechanism is set, the second air inlet pipeline is provided in nitrification liquid reflux mechanism, in the second air inlet
The second control valve with programable controller system control connection is provided on pipeline for controlling air lift nitrification liquid regurgitant volume.
The utility model is more highly preferred in embodiment, is equipped with back-purge system and third water conservancy diversion on fixed filter bed pond
It manages, is provided with third air inlet pipeline in back-purge system, is provided on third air inlet pipeline and programable controller system control
For the third control valve of system connection for controlling back washing strength, the third diversion pipe is connected and fixed filter bed pond and sedimentation basin.
The utility model is more highly preferred in embodiment, and the precipitating bottom of pond portion is provided with the bucket of inclined plate cone bucket shape,
The sludge reflux mechanism is installed in the middle part of the sedimentation basin, the 4th air inlet pipeline is provided in sludge reflux mechanism,
The 4th control valve with programable controller system control connection is provided on four air inlet pipelines for controlling stripping reflux dirt
Mud amount.
It is equipped with to control with programable controller system in the preferred embodiments of the present invention, in sludge reflux mechanism and connect
The 5th control valve connect and the 6th control valve.
In the preferred embodiments of the present invention, sterilization pool is provided on sedimentation basin.
In the preferred embodiments of the present invention, the sludge-tank is located inside pre-denitration pond, is equipped in sludge-tank upper end
Sludge-tank pond supernatant is flowed into pre-denitration pond by overflow port.
According to the above aspect of the present invention, the utility model at least has the following advantages:
1. the quadruple strengthened denitrification mechanism of the utility model, firstly, fixed filler anoxic pond is in conjunction with fixed filter bed pond
Pre-denitrification and denitrogenation processing, secondly, the synchronous nitration denitrification denitrogenation processing system of carrier flow aerobic tank, finally, will sink
Shallow lake pond residual nitrate is back to pre-denitration pond, again denitrification denitrogenation circular treatment, guarantees stronger nitrogen removal efficiency, Neng Gouwen
Guarantee nitrogen removal efficiency 90% or more surely；
2. the dual reinforced phosphor-removing mechanism of the utility model, firstly, being passed through using the aerobic excessive consumption phosphorus substance of polyP bacteria
Sedimentation basin base sludge is quantitatively periodically discharged and reaches dephosphorization purpose, secondly, the mud mixed liquid of sludge-tank part, passes through throwing
Add Dephosphorization reagent, the phosphorus substance that anaerobism discharges is removed again, guarantees stronger tp removal rate, guarantee tp removal rate can be stablized
90% or more；
3. in conjunction with circulating biological membranous system, activated sludge inside cyclic utilization system is not necessarily to additional activated sludge, carbon source
And pH adjusts liquid, solves the problems such as old technique operation is complicated, cost energy consumption is high；
4. the utility model is using fixed filter bed pond and sedimentation basin special internal structure, in conjunction with being arranged in reflux conveyance conduit
Gas-liquid separator effect, reduce nitrification liquid reflux and sludge reflux in dissolved oxygen carrying, guarantee front end biochemistry pool dissolution
Oxygen environment provides stable guarantee for the procreation existence of different strain；
It is microorganism in sewage using the combination of carrier filler and sewage, it is suitable to provide 5. using biofilm
Oxygen environment and carrier guarantee the enough active mud contents of system, are not required to additional activated sludge, and operation cost saves；
6. using multipoint water feeding, segmental influent supplementary carbon source avoids low C/N ratio, to entire waste water processes bring
It influences；
7. the utility model circulating biological embrane method can be recycled sufficiently and raise and train preferable membranaceous biological sludge, solved
The problem that old process structure is complicated, difficult in maintenance, operation cost is high and energy consumption is high；
8. in Tthe utility model system, the subregion of aerobic tank disappears oxide structure, and controllable intermittent aerating, nitre can reduce
Change bring high-solubility oxygen reflux problem in phegma, biochemistry pool dissolved oxygen is difficult to control at this stage for solution, universal higher problem.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.
Detailed description of the invention
Fig. 1 is that structure of the utility model for the intensified denitrification and dephosphorization circulating biological membranous system of sanitary sewage disposal is shown
It is intended to；
Fig. 2 is flow chart element of the utility model for the intensified denitrification and dephosphorization circulating biological membranous system of sanitary sewage disposal
Figure.
The meaning of each appended drawing reference is as follows in figure.
1 pre-denitration pond, 2 sludge-tank
2-1 overflow port 3 fixes filler anoxic pond
4-1 first flow buffers weir 4-2 second flow and buffers weir
5 the first diversion pipes of diving mixing device 6-1
6-2 the second diversion pipe 6-3 third diversion pipe
7-1 carrier flow pond 7-2 fixes filter bed pond
8-1 the first control valve the second control valve of 8-2
The 4th control valve of 8-3 third control valve 8-4
The 6th control valve of the 5th control valve 8-6 of 8-5
9 nitrification liquids reflux mechanism 10-1 aerating system
10-2 back-purge system the first air inlet pipeline of 11-1
11-2 the second air inlet pipeline 11-3 third air inlet pipeline
12 sedimentation basin of the 4th air inlet pipeline of 11-4
13 bucket, 14 sludge reflux mechanism
15 programable controller system, 16 sterilization pool
17 air-lift devices
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
As shown in Fig. 2, sanitary sewage is collected by front end pipe network, after septic tank is handled, by equal in grid conditioning tank
Matter measures sewage, pumps the circulating life of intensified denitrification and dephosphorization that sewage is used for sanitary sewage disposal to the utility model at regular time and quantity
Object membranous system.It include respectively with programable controller system 15 communicate to connect denitrogenation quadruple mechanism, the dual mechanism of dephosphorization and
Flow back mechanism, and it includes the pre-denitration pond 1 being sequentially communicated that denitrogenation quadruple mechanism is flowed to by sewage, fixed filler anoxic pond 3, is carried
Body flows aerobic tank 7-1 and fixed filter bed pond 7-2, and the dual mechanism of dephosphorization includes sludge-tank 2 and sedimentation basin 12, the reflux
Mechanism includes sludge reflux mechanism 14 and nitrification liquid reflux mechanism 9, wherein the water outlet of the fixed filter bed pond 7-2 is through sedimentation basin
12 precipitating dephosphorization heel row are removed, and the mud mixed liquid that sedimentation basin 12 flows out is recycled to pre-denitration pond 1 through the sludge reflux mechanism 14
Fixed filler anoxic pond is recycled to through nitrification liquid reflux mechanism 9 with the nitrification liquid of sludge-tank 2, the fixed filter bed pond 7-2 outflow
3。
As shown in Figure 1, sewage enters pre-denitration pond 1, which is equipped with first flow and buffers weir 4-1, guarantees
Bring dissolved oxygen impact in front end is slowed down while intaking uniform into pre-denitration pond 1, and there is the oxygen effect that centainly disappears.Pre- denitration
It is divided into two-part structure up and down inside pond 1, top is flow adjustment portion (h1 is between h2 liquid level), which passes through air-lift device
17 water lifts are to subsequent biochemical pond, to guarantee subsequent biochemical pond available depth；Lower part is pre- denitration sand setting portion (below h2 liquid level), should
Part can further remove the impurity such as water inlet suspended matter while strengthened denitrification, and a storehouse is multi-purpose, give full play to volume utilization
Rate.Sludge-tank 2 is located inside pre-denitration pond 1, is made full use of 1 inside spare space of pre-denitration pond, is reached capacity utilization most
Bigization.2 upper end of sludge-tank is equipped with overflow port 2-1, and 2 pond supernatant of sludge-tank is flowed into pre-denitration pond 1.
From pre-denitration pond 1, fixed filler anoxic pond 3 is promoted to by air-lift device 17, which is equipped with the
Two flows buffer weir 4-2, guarantee to slow down the punching of front end air lift bring dissolved oxygen while fixed filler anoxic pond 3 is uniformly intake
It hits, there is the oxygen effect that centainly disappears.The suspension Ball-type packing of special substance, media-filling rate are filled in fixed filler anoxic pond 3
Greater than 40%, which plays biofilm carrier, while having the effect of retention suspended matter concurrently, strong with biological attachment power,
Large specific surface area, porosity are high, chemistry and biological stability are good, long-lived powerful effect.Fixed 3 bottom of filler anoxic pond
Diving mixing device 5 is installed, is controlled by 15 time of programable controller system, is stirred in a manner of intermittent duty,
It avoids base sludge from depositing, guarantees that fixed filler anoxic pond 3 is in the muddy water admixture of homogeneous, give full play to anoxic denitrification
The effect of other active microorganisms such as bacterium.
From fixed filler anoxic pond 3, the upper end carrier flow aerobic tank 7-1, pond dress are entered by the first diversion pipe 6-1
It is filled with special material floating stuffing, oxygen supply aeration is carried out by high efficient aeration system 10-1, is filled so that floating stuffing can be realized
Divide fluidized state.First control valve 8-1 is installed on the first air inlet pipeline 11-1, when by programable controller system 15
Between control, periodically turn on air in a manner of intermittent aerating uniformly, in the injection carrier flow aerobic tank 7-1 water of timing, can
Control dissolved oxygen content in pond.Whole aerobic part has effects that subregion disappears oxide structure and the dual gas-liquid separator of pipeline disappears oxygen.
From carrier flow aerobic tank 7-1, the fixed filter bed pond 7-2 of back segment is entered by the second diversion pipe 6-2, is pacified by fixed
The filtering of the bacteria bed of dress can further remove SS, organic pollutant etc..Nitrification liquid reflux mechanism 9 is mounted on fixation
Second air inlet pipeline 11-2 of the filter bed pond rear end 7-2, the pipeline is equipped with the second control valve 8-2, passes through programmable controller
The control of 15 time of system periodically turns on the nitrification liquid after the oxygen that disappears being back to the fixed filler anoxic pond 3 in front end.This is cleverly tied
Structure solves bring high-solubility oxygen reflux problem in nitrification phegma.The fixed filter bed pond bottom 7-2 is equipped with counter-flushing pipeline 10,
The third air inlet pipeline 11-3 of the pipeline is equipped with third control valve 8-3, is controlled by 15 time of programable controller system,
It periodically turns on and fixed filter bed pond 7-2 is backwashed, avoid filter bed from blocking, the mixed liquor after backwash passes through third water conservancy diversion
Pipe 6-3 enters sedimentation basin 12, carries out depth S S removal.
Pass through third diversion pipe 6-3 from fixed filter bed pond 7-2 through front end biochemical system treated sewage and flow into precipitating
Pond 12, the bottom of pond portion bucket 13 using inclined plate cone bucket design, the slow precipitating through 12 upper buffer layer of sedimentation basin, suspended material with
Cone bucket headwall is slowly accumulated to bottom, and the efficient removal of SS is conducive to, and avoids bring sludge drift due to sludge settling effect is poor
It is floating, it can effectively carry out sludge settling.Meanwhile the cone bucket design of bottom, it accumulates sludge sufficiently, is conducive to flow back.It sinks simultaneously
Sludge reflux mechanism 14 is installed at the intermediate position in shallow lake pond 12, and the 4th air inlet pipeline 11-4 of the pipeline is equipped with the 4th control valve
8-4 is controlled by 15 time of programable controller system, carries out regular air lift according to influent quality and total system operation conditions
Spoil disposal is adjusted.Sludge reflux mechanism 14 is equipped with the 5th control valve 8-5, is controlled by 15 time of programable controller system,
Front end pre-denitration pond 1 will be back to for the part muddy water mixed solution of sedimentation basin 12 by periodically turning on.The sludge of sedimentation basin 12 returns simultaneously
Mechanism 14 is flowed, the 6th control valve 8-6 is installed, is controlled, is periodically turned on part by 15 time of programable controller system
Excess sludge is discharged into progress deep physical dephosphorization in sludge-tank 2.12 top of sedimentation basin is equipped with sterilization pool 16, makes full use of sedimentation basin
12 top remaining spaces, it is further further to the germ in sewage and pollutant of curing the disease in 12 top water outlet of sedimentation basin
It eliminates.
Above-mentioned the utility model quadruple strengthened denitrification mechanism, synergistic effect optimization effluent quality.Firstly, fixed filler anoxic
Pre-denitrification and denitrogenation of the pond 3 in conjunction with fixed filter bed pond 7-2 is handled, secondly, the simultaneous nitrification and denitrification of carrier flow aerobic tank 7-1
Denitrogenation processing system is nitrified, finally, 12 residual nitrate of sedimentation basin is back to pre-denitration pond 1, denitrification denitrogenation is recycled again
Processing, guarantees stronger nitrogen removal efficiency, can stablize and guarantee that nitrogen removal efficiency improves effluent quality 90% or more.Quadruple is strong
It is specific as follows to change denitrogenation mechanism:
Strengthened denitrification system one, 12 residual nitrate reflux cycle denitrification processing system of sedimentation basin.It is returned through sedimentation basin 12
The mud mixed liquid of stream is back to system front end pre-denitration pond 1.In the sludge reflux liquid of sedimentation basin 12, contain back segment biochemistry
The nitrogen-containing pollutants matter such as nitrate that pond is not reacted completely can carry out again denitrification by first pass pre-denitration pond 1, strengthen
Denitrification functions.
Strengthened denitrification system two, fixed 3 Prepositive denitrification processing system of filler anoxic pond.With the oxygen effect that further disappears.
Nitrification liquid is back to fixed filler anoxic pond 3, and nitrate nitrogen is converted to nitrogen, while by the effect of facultative microbe by sewage
In organic nitrogen resolve into ammonia nitrogen, but also can use partial organic substances and ammonia nitrogen synthesizes new cellular material, accelerate organic
The degradation of object, the larger molecular organics in water body are broken down into small-molecule substance, effectively improve the biodegradability of sewage, be conducive to
Subsequent oxidation processes.Prepositive denitrification biological denitrification system, nitrification make the remaining organic contamination of denilrification system rear
Object is further removed, and effluent quality is improved, meanwhile, denitrification produces alkali, can compensate nitrification to a certain extent
The alkali consumed, it is not necessary to which additional substance adjusts pH.
Strengthened denitrification system three, carrier flow aerobic tank 7-1 synchronous nitration and denitrification processing system.Complete simultaneous nitrification and denitrification
Nitrification function.
Strengthened denitrification system four, the pre-denitrification and denitrogenation that fixed filter bed pond 7-2 is combined with fixed filler anoxic pond 3 are handled
System.Organic matter is further resolved into inorganic matter, removes pollutant.Organic nitrogen is oxidized to ammoniacal nitrogen, and then resolves into Asia
Nitrate nitrogen and nitrate nitrogen.Through leading portion treated the sewage containing nitrite nitrogen and nitrate nitrogen, into the fixed filter bed pond 7- of back segment
2, front end anoxic biochemical system can be influenced to avoid the dissolved oxygen in nitrification liquid reflux.Meanwhile fixed filter bed pond passes through filtering,
SS, organic pollutant etc. can further be removed.
The dual reinforced phosphor-removing mechanism of the utility model, phosphor-removing effect are excellent.Firstly, utilizing the aerobic excessive consumption of polyP bacteria
Phosphorus substance reaches dephosphorization purpose by the quantitative periodically discharge of 12 base sludge of sedimentation basin, secondly, the dirt of 2 part of sludge-tank
The phosphorus substance that anaerobism discharges is removed again by adding Dephosphorization reagent, guarantees stronger tp removal rate by mud mixed liquor, can
Stablize and guarantees tp removal rate 90% or more.Dual reinforced phosphor-removing mechanism is specific as follows:
Strengthening phosphorus removal system one, the biological phosphate-eliminating circulatory system.Whole system is by circulating reflux, using polyP bacteria aerobic
Aerobic respiration under environment, the organic substance that continuous oxygenolysis stores itself in vivo, simultaneously also by from external environment to its body
Interior intake organic matter, utilizes energy to excessive consumption phosphorus substance, by quantifying discharge part excess sludge periodically to reach dephosphorization
Purpose.The sludge of 12 bottom of sedimentation basin, it is whole to be partial to anaerobic state due to being chronically at stationary state, by 12 bottom of sedimentation basin
Anaerobic sludge be back in pre-denitration pond 1, the polyP bacteria in sludge discharges phosphorus, the intracorporal ATP of polyP bacteria under anaerobic environment
It is hydrolyzed, gives off energy, while can be made full use of in pre-denitration pond 1 and raise and train mature polyP bacteria, cultivate dominant bacteria
Kind, so that subsequent aerobic stage polyP bacteria plays effect again.It is aerobic and anaerobism to combine closely, it completes circulating biological and removes
Phosphorus.
Strengthening phosphorus removal system two, deep physical dephosphorization system.The sludge to flow back from sedimentation basin 12, is partially used as biological treatment
The regeneration microorganism of the circulatory system raises and train use, and some residual sludge drains into pre- denitration sludge and builds jointly in the sludge-tank 2 in pond, carries out object
Reason dephosphorization makes the phosphorus substance released in sludge-tank and medicament flocculation sedimentation, further removes sludge by additional Dephosphorization reagent
Contain phosphor contaminant in supernatant, the regular pump drainage of sludge-tank base sludge is transported outward, and supernatant after processing is discharged into pre-denitration pond
1。
To sum up, the utility model uses quadruple strengthened denitrification function and dual reinforced phosphor-removing function, guarantees that stronger nitrogen phosphorus is gone
Except rate, it can stablize and guarantee nitrogen, tp removal rate 90% or more；In conjunction with circulating biological membranous system, in cyclic utilization system
Portion's activated sludge adjusts liquid without additional activated sludge, carbon source and pH, solves old technique operation complexity, cost energy consumption height etc.
Problem；The utility model utilizes carrier flow pond and sedimentation basin special internal structure, in conjunction with the gas being arranged in reflux conveyance conduit
The effect of liquid/gas separator reduces the carrying of dissolved oxygen in nitrification liquid reflux and sludge reflux, guarantees front end biochemistry pool dissolved oxygen ring
Border provides stable guarantee for the procreation existence of different strain；Using biofilm, using microorganism in sewage, it is suitable to provide
Oxygen environment and carrier guarantee the enough active mud contents of system, are not required to additional activated sludge, and operation cost saves；Using multiple spot into
Water, segmental influent supplementary carbon source avoid low C/N ratio, influence on entire waste water processes bring；The utility model is circulating
Biofilm can be recycled sufficiently and raise and train preferable membranaceous biological sludge, solve old process structure it is complicated, it is difficult in maintenance,
The problem that operation cost is high and energy consumption is high；In Tthe utility model system, the subregion of aerobic tank disappears oxide structure, and controllable
It has a rest aeration, can reduce bring high-solubility oxygen reflux problem in nitrification phegma, solve biochemistry pool dissolved oxygen difficulty control at this stage
System, universal higher problem.
The above is only the preferred embodiment of the utility model, is not intended to limit the utility model, it is noted that
For those skilled in the art, without deviating from the technical principle of the utility model, it can also do
Several improvements and modifications out, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (10)
1. a kind of intensified denitrification and dephosphorization circulating biological membranous system for sanitary sewage disposal, it is characterised in that: including respectively
Denitrogenation quadruple mechanism, the dual mechanism of dephosphorization and the reflux mechanism communicated to connect with programable controller system (15),
It includes the pre-denitration pond (1) being sequentially communicated that denitrogenation quadruple mechanism is flowed to by sewage, fixed filler anoxic pond (3), is carried
Body flows aerobic tank (7-1) and fixation filter bed pond (7-2), and the dual mechanism of dephosphorization includes sludge-tank (2) and sedimentation basin (12),
The reflux mechanism includes that sludge reflux mechanism (14) and nitrification liquid flow back mechanism (9),
Wherein, the water outlet of the fixed filter bed pond (7-2) dephosphorization after the exclusion of sedimentation basin (12) sludge, sedimentation basin (12) outflow
Mud mixed liquid is recycled to pre-denitration pond (1) and sludge-tank (2), the fixed filter bed pond through the sludge reflux mechanism (14)
The nitrification liquid of (7-2) outflow is recycled to fixed filler anoxic pond (3) through nitrification liquid reflux mechanism (9).
2. a kind of intensified denitrification and dephosphorization circulating biological membranous system for sanitary sewage disposal according to claim 1,
It is characterized by: the pre-denitration pond (1) is divide into upper part and lower part structure, upper part-structure is flow adjustment portion, lower part knot
Structure is pre- denitration sand setting portion, is equipped with first flow buffering weir (4-1) on pre-denitration pond (1) top.
3. a kind of intensified denitrification and dephosphorization circulating biological membranous system for sanitary sewage disposal according to claim 1,
It is characterized by: being provided with and programable controller system (15) communication connection in fixed filler anoxic pond (3) bottom
Diving mixing device (5) is equipped with second flow buffering weir (4-2) on fixed filler anoxic pond (3) top.
4. a kind of intensified denitrification and dephosphorization circulating biological membranous system for sanitary sewage disposal according to claim 1,
It is characterized by: the fixed filler anoxic pond (3) connects carrier flow aerobic tank (7-1) through the first diversion pipe (6-1), first
It is provided with the first air inlet pipeline (11-1) on diversion pipe (6-1), is provided on the first air inlet pipeline (11-1) and programmable control
The first control valve (8-1) of device system (15) control connection processed.
5. a kind of intensified denitrification and dephosphorization circulating biological membranous system for sanitary sewage disposal according to claim 1,
It is characterized by: carrier flow aerobic tank (7-1) rear end is provided with fixed filter bed pond (7-2), at fixed filter bed pond (7-2)
Nitrification liquid reflux mechanism (9) is set, the second air inlet pipeline (11-2) is provided in nitrification liquid reflux mechanism (9), second
The second control valve (8-2) with programable controller system (15) control connection is provided on air inlet pipeline (11-2) for controlling
Air lift nitrification liquid regurgitant volume processed.
6. a kind of intensified denitrification and dephosphorization circulating biological membranous system for sanitary sewage disposal according to claim 5,
It is characterized by: back-purge system (10-2) and third diversion pipe (6-3) are equipped on fixed filter bed pond (7-2), backwash system
It is provided with third air inlet pipeline (11-3) on system (10-2), is provided on third air inlet pipeline (11-3) and programmable controller
The third control valve (8-3) of system (15) control connection is for controlling back washing strength, third diversion pipe (6-3) connection
Fixed filter bed pond (7-2) and sedimentation basin (12).
7. a kind of intensified denitrification and dephosphorization circulating biological membranous system for sanitary sewage disposal according to claim 5,
It is characterized by: sedimentation basin (12) bottom is provided with the bucket (13) of inclined plate cone bucket shape, in the sedimentation basin (12)
The sludge reflux mechanism (14) is installed in portion, and the 4th air inlet pipeline (11-4) is provided on sludge reflux mechanism (14), the
It is provided on four air inlet pipelines (11-4) and is used for the 4th control valve (8-4) of programable controller system (15) control connection
Control stripping reflux sludge quantity.
8. a kind of intensified denitrification and dephosphorization circulating biological membranous system for sanitary sewage disposal according to claim 1,
It is characterized by: being equipped with the 5th controlling valve with programable controller system (15) control connection in sludge reflux mechanism (14)
Door (8-5) and the 6th control valve (8-6).
9. a kind of intensified denitrification and dephosphorization circulating biological membranous system for sanitary sewage disposal according to claim 1,
It is characterized by: being provided with sterilization pool (16) on sedimentation basin (12).
10. a kind of intensified denitrification and dephosphorization circulating biological membranous system for sanitary sewage disposal according to claim 1,
It is characterized by: the sludge-tank (2) is located at pre-denitration pond (1) inside, it is equipped with overflow port (2-1) in sludge-tank (2) upper end, it will
Sludge-tank (2) pond supernatant flows into pre-denitration pond (1).
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