CN208667430U - A kind of A2O-D2Cooperate with the device of denitrogenation dephosphorizing - Google Patents
A kind of A2O-D2Cooperate with the device of denitrogenation dephosphorizing Download PDFInfo
- Publication number
- CN208667430U CN208667430U CN201821247674.1U CN201821247674U CN208667430U CN 208667430 U CN208667430 U CN 208667430U CN 201821247674 U CN201821247674 U CN 201821247674U CN 208667430 U CN208667430 U CN 208667430U
- Authority
- CN
- China
- Prior art keywords
- pond
- aerobic
- deoxidation
- tank
- sludge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of A2O‑D2The device of denitrogenation dephosphorizing, including sequentially connected anaerobic pond, anoxic pond, aerobic tank, municipal sewage is cooperateed with to obtain outputted aerobic water after anaerobism, anoxic, Aerobic Process for Treatment；Aerobic tank is internally embedded deoxidation pond, aerobic tank water outlet is divided into 2 parts, a portion is back to anoxic pond after entering the deoxidation of deoxidation pond, and another part is directly entered secondary settling tank, and the volume ratio of the two is 2-4:1；The end of secondary settling tank connects sludge concentration tank, and into anaerobic pond, supernatant is back in deoxidation pond the sludge reflux after concentration.The utility model is in existing A2On the basis of O technique, the Nitrogen/Phosphorus Removal of two stage treatment is further promoted, reduces sewage treatment investment and operating cost, proposes A2O‑D2Denitrification dephosphorization technique process and its technological design keys and design parameter are cooperateed with, Designing Sewage Treatment Plant is provided and proposes the solution of mark transformation.
Description
Technical field
The utility model relates to a kind of A2O-D2The device for cooperateing with denitrogenation dephosphorizing, belongs to sewage treatment technology field.
Background technique
The nutrients such as nitrogen phosphorus largely enter lake or river is a major reason for causing water eutrophication.With
The carry out in an all-round way long system in river and the attention to ecological environment of China to improve urban water environmental quality controls water eutrophication, protects
Receiving water body is protected, needs to further decrease the pollutants such as nitrogen, the phosphorus that sewage treatment plant or regeneration water factory are discharged into environment water and contains
Amount improves effluent quality.
The nitrogen of municipal sewage plant, phosphorus ligands are mainly biological denitrificaion and biological phosphate-eliminating at present.Biological denitrificaion it is basic
Principle: 1) organic nitrogen is converted into ammonia nitrogen；It 2) by mineralized nitrogen is nitrate nitrogen using nitrifier by aerobic aeration；3) in anoxic
Under the conditions of, nitrogen is converted for nitrate nitrogen by denitrifying bacteria.The basic principle of biological phosphate-eliminating: 1) under anaerobic, gather
It includes Quadrafos in cell that phosphorus bacterium, which releases, while generating energy；2) after entering aerobic environment, polyP bacteria decomposes body
Interior poly butyric ester and Exogenous ground substance, absorbs the orthophosphates of a large amount of solubilised states, completes poly- phosphorus process, is removed by spoil disposal
Phosphorus in sewage.Recycled water advanced nitrogen mainly uses denitrification filter pool, and by additional carbon, the nitrate nitrogen of two stage treatment is turned
Turn to nitrogen.Recycled water deep phosphorous removal is mainly used adds Dephosphorization reagent realization chemical dephosphorization before filter tank or efficient sedimentation tank
Method.By the denitrogenation dephosphorizing performance for strengthening two stage treatment unit, it is possible to reduce the carbon source and dephosphorization medicine of advanced nitrogen dephosphorization
Agent dosage avoids the adverse effect caused by chemical agent to activated Sludge System, has preferable economy.
Municipal wastewater nitrogen and phosphorus removal technique is more, and main technique has A2O, techniques such as oxidation ditch, CAST, MBR and some new
The denitrification dephosphorization technique of type, but municipal sewage plant prevailing technology remains as A at present2O technique.However, traditional A2O technique
Nitrogen/Phosphorus Removal is still undesirable.To improve sewage denitrification and dephosphorization effect, most commonly seen method is exactly to be lowered into anaerobism
The dissolved oxygen in pond and anoxic pond, the various deoxidation equipment of utility model.In recent years, my company carries out technological innovation, passes through in engineering
Frequently in the reserved certain oxygen section that disappears in aerobic tank end, the sewage backflow after the oxygen that disappears to anoxic zone and enters secondary settling tank.It is low molten
The backflow mixed liquor for solving oxygen improves system nitric efficiency, but the sewage after the oxygen that disappears is directly entered secondary settling tank, due to oxygen in water
It is lower, secondary settling tank anoxic denitrification is easily caused, Mud up-floating is caused, influences the sedimentation effect of secondary settling tank.
Deoxidation pond is embedded into aerobic tank end by the utility model initiative, and aerobic tank end is divided into 2 parts, is flowed back
Mixed liquor enters the oxygen pond (pond D) that disappears and carries out the oxygen that disappears, and the water outlet after aeration is directly entered secondary settling tank, not only reduces backflow mixed liquor
Dissolved oxygen, also effectively prevent secondary settling tank water inlet dissolution hypoxgia caused by problem.In engineering, secondary settling tank sludge directly flows back
The anaerobic phosphorus release efficiency of anaerobic pond is caused to reduce due to the dissolved oxygen and nitrate nitrogen in returned sludge to anaerobic pond, it is existing in engineering
In not good solution.The utility model proposes highly effective sludge concentration basin is arranged (such as: inclined plate in returned sludge system
Sedimentation basin), further concentrating return-flow sludge improves the concentration of anaerobic pond polyP bacteria, reduces nitrate nitrogen and dissolved oxygen releases anaerobism
The influence of phosphorus improves system phosphor-removing effect.
The utility model technique is to make full use of A2On the basis of O process advantage, further strengthen secondary treatment system
Nitrogen/Phosphorus Removal, propose A2O-D2Cooperate with denitrification dephosphorization technique, A2O-D2In first A represent anaerobism
(anaerobic), second A represents anoxic (anoxic), O is represented aerobic (oxic), and first D is represented deoxidation (deoxy), the
Two D represent thickening (dewater), in which: deoxidation is completed in deoxidation pond (pond D), and thickening is dense in returned sludge
It is completed in contracting pond (pond D).The utility model proposes A2O-D2Cooperate with denitrification dephosphorization technique process, deoxidation pond (pond D) pond body construction and
Technological design keys and the technological parameters such as returned sludge concentration basin (pond D) setting, provide for sewage treatment plant's intensified denitrification and dephosphorization
New solution.A2O-D2Denitrification dephosphorization technique is cooperateed with to have pond body structure simple, nitric efficiency is high, is conducive to give full play to
The treatment effeciency of each processing structures, the Nitrogen/Phosphorus Removal of lifting sewage treatment plant two stage treatment guarantee that sewage treatment plant goes out
Water water quality can effectively reduce the chemical agent that advanced nitrogen dephosphorization needs to add, and be suitble to newly-built sewage treatment plant and present situation sewage
Treatment plant proposes mark transformation project.
Utility model content
Technical problem to be solved in the utility model is for the deficiencies in the prior art, for municipal wastewater treatment plant
Intensified denitrification and dephosphorization, and a kind of A is provided2O-D2The technique and device for cooperateing with denitrogenation dephosphorizing, in existing A2On the basis of O technique, into
One step promotes the Nitrogen/Phosphorus Removal of two stage treatment, reduces sewage treatment investment and operating cost, proposes A2O-D2Collaboration denitrogenation removes
Phosphorus process flow and its technological design keys and design parameter provide Designing Sewage Treatment Plant and propose the solution of mark transformation.
To achieve the goals above, the utility model adopts the following technical solution:
The utility model provides a kind of A first2O-D2Cooperate with denitrogenation dephosphorizing device, including sequentially connected anaerobic pond, lack
Oxygen pond, aerobic tank, municipal sewage obtain outputted aerobic water after anaerobism, anoxic, Aerobic Process for Treatment；It is characterized by:
The aerobic tank, the inside of water outlet are embedded with deoxidation pond；The outside of water outlet is provided with discharge outlet, and arranges
The mouth of a river is connected to secondary settling tank；
The deoxidation pond is provided with water inlet I, supernatant import and mixture export, in which: water inlet I with it is aerobic
It is connected inside pond, carries out deoxidation treatment to make to be flowed into deoxidation pond in aerobic tank by the outputted aerobic water that processing obtains；
The mixture export is connected with anoxic pond, continues so that the mixed liquor obtained after deoxidation treatment is back in anoxic pond
Carry out anoxic treatment；
The secondary settling tank is equipped with water inlet II, water outlet and sewage draining exit, in which: the draining of water inlet II and aerobic tank
Mouth is connected, and carries out precipitation process to make to be flowed into secondary settling tank in aerobic tank by the outputted aerobic water that processing obtains；Water outlet
Mouth is connected with outlet conduit, so that the water that obtains Jing Guo precipitation process is emitted into outside；Sewage draining exit is divided into two-way, all the way with
Mud discharging pipeline is connected, so that the mud discharging that precipitation process is obtained, to outside, another way is connected to sludge concentration tank；
The sludge concentration tank is equipped with sludge import, supernatant outlet and sludge outlet, in which: sludge import is heavy with two
The sewage draining exit in pond is connected, and takes off so that the sludge obtained in secondary settling tank through precipitation process is sent into sludge concentration tank and carry out concentration
Water process；Supernatant outlet is connected with the supernatant import in deoxidation pond, so that the supernatant that thickening is obtained is back to
Deoxidation continues deoxidation treatment in pond；The sludge outlet is connected with anaerobic pond, so that thickening is concentrated
Sludge reflux continues Anaerobic Treatment into anaerobic pond.
In above-mentioned technical proposal, the bottom of the aerobic tank, in addition to the part in setting deoxidation pond, other parts are uniform
It is equipped with aerator.
In above-mentioned technical proposal, the deoxidation pond is internally provided with underwater stirrer, prevents sludge settling；It stirs under water
It mixes device and is evenly arranged in the water surface hereinafter, avoiding being oxygenated and generating dead angle；Preferably, the underwater stirrer preferably uses bottom deep
Layer blender, further preferably Double-curved-surface stirring device, power preferably use 0.2-0.3 (W/m3)。
In above-mentioned technical proposal, the aerobic tank, outputted aerobic water a part, which enters, carries out deoxidation treatment in deoxidation pond,
Another part enters and carries out precipitation process in sedimentation basin, and the volume ratio of the two is 2-4:1, preferably 3:1.
Preferably, in order to reduce engineering construction difficulty, structures quantity is reduced, deoxidation pond is long side by aerobic tank, width
What side and partition wall were constituted, in which: one of partition wall I (9) is set up at the broadside 1/4 of aerobic tank, partition wall I prolongs into the pond of aerobic tank
It stretches and parallel with the long side of aerobic tank；The end of partition wall I connects one of partition wall II (10) normal thereto, the end of partition wall II with
The long side of aerobic tank is connected, and the length of partition wall II is the 3/4 of aerobic tank width edge length.
Preferably, the broadside of aerobic tank is divided into two by partition wall I, four sides one of of 3/4 length as deoxidation pond, and 1/4
Length any position setting discharge outlet.
In above-mentioned technical proposal, the sludge concentration tank, preferably inclined-plate clarifying basin, by being followed successively by water under upper in pond
Floor area, inclined plate area, buffer layer and bottom of pond, in which: multiple inclined plates are uniformly equipped in inclined plate area, inclined plate spacing is preferably 100-
200mm, inclined plate plagioclase 1.2m, inclined plate level inclination are preferably 60 °；The height of pelagic division is preferably 1m (the i.e. depth of water on inclined plate area top
Preferably 1m), buffering layer height is preferably 1m；Bottom of pond uses sludge bucket, and the skew wall of sludge bucket and the inclination angle of horizontal plane are preferably 60 °.
The utility model also provides a kind of A2O-D2The technique for cooperateing with denitrogenation dephosphorizing, comprising the following steps:
(1)A2O processing: traditionally, municipal sewage is successively imported anaerobic pond, anoxic pond, in aerobic tank successively
Outputted aerobic water is obtained after anaerobism, anoxic, Aerobic Process for Treatment, aeration when traditional Aerobic Process for Treatment has the work of mixing and oxygen supply
With increasing the dissolved oxygen in outputted aerobic water, guarantee the concentration of dissolved oxygen in outputted aerobic water in 2mg/L or more；Outputted aerobic water one
Part carries out deoxidation treatment, and another part carries out precipitation process；
(2) deoxidation treatment: obtaining a part of outputted aerobic water for step (1) and imported into deoxidation pond to carry out deoxidation treatment, takes off
The hydraulic detention time in oxygen pond is at least 0.5h, and is stirred in deoxidation treatment, prevents sludge settling；At deoxidation
Mixed liquor is obtained after reason, dissolved oxygen concentration should be controlled in 0.5mg/L hereinafter, mixed liquor is back in anoxic pond recycles in mixed liquor
It utilizes；
(3) precipitation process: a part of outputted aerobic water that step (1) obtains is imported into secondary settling tank, conventionally
Carry out precipitation process, the secondary clarifier effluent and sludge obtained after precipitation process, secondary clarifier effluent direct emission, sludge a part row
It puts, a part carries out thickening processing；
(4) thickening is handled: the partial sludge in step (3) being imported in sludge concentration tank and is carried out at thickening
Reason obtains supernatant and thickened sludge, and supernatant returns to be handled in deoxidation pond, and thickened sludge is back in anaerobic pond and recycles
It utilizes；
(5) circular treatment: the thickened sludge continuation to flow back in municipal sewage and step (4) conventionally carries out anaerobism
Processing, the middle mixed liquor continuation to flow back of the product and step (2) that Anaerobic Treatment obtains conventionally carry out anoxic treatment, lack
The product continuation that oxygen is handled conventionally carries out Aerobic Process for Treatment；Outputted aerobic water continues according to step (2) and step (3)
Operation carry out deoxidation treatment and precipitation process, such circular treatment, the water outlet of nitrogen phosphorus reaches design standard, handles through secondary settling tank
Afterwards, it is discharged direct emission.
In above-mentioned technical proposal, in step (1), the concentration of dissolved oxygen is 1.5-8mg/L, preferably 2- in outputted aerobic water
3mg/L, further preferably 2mg/L.
In above-mentioned technical proposal, in step (1), outputted aerobic water a part carries out deoxidation treatment, another part is precipitated
Processing, the volume ratio of the two is preferably 2-4:1, preferably 3:1.
In above-mentioned technical proposal, in step (2), when deoxidation treatment, the deoxidation tank waterpower residence time is preferably 0.5-1.5h,
Further preferably 0.5-1h.
In above-mentioned technical proposal, in step (3), the sludge obtained after precipitation process, a part discharge, a part into
Row thickening processing, the volume ratio of the two are 1:8-40.
In above-mentioned technical proposal, in step (4), it is back to thickened sludge in anaerobic pond, and is entered in sludge concentration tank
The volume ratio for carrying out the sludge of thickening processing is 0.2-1:1.
In above-mentioned technical proposal, in step (4), the concentration time of sludge concentration tank is 0.5-2h, further preferably
0.5-1h。
The A of the utility model2O-D2Cooperate with denitrogenation dephosphorizing treatment process and device that there is following technological merit:
(1) A of the utility model2O-D2Collaboration denitrification dephosphorization technique core technology main points be add deoxidation pond (pond D) and
Returned sludge concentration basin (pond D).A2O-D2Collaboration denitrification dephosphorization technique makes full use of traditional A2The advantages of O, in A2On the basis of O
Depth excavates the denitrogenation dephosphorizing efficiency of two stage treatment, improves Effluent criteria, provides solution with mark transformation is proposed for Designing Sewage Treatment Plant
Certainly scheme.
The A of the utility model2O-D2Collaboration denitrification dephosphorization technique patent not only allows for eliminating dissolved oxygen, also from active dirty
Internal carbon source utilizes, improves the microbial biomass of anaerobic pond in mud, reduces the comprehensive considerations such as influence of the nitrate nitrogen to anaerobic/anoxic
The collaboration removal of nitrogen phosphorus, has preferable engineering utilization value.
(2)A2O-D2Deoxidation pond (pond D) pond body tectonic sieving of collaboration denitrification dephosphorization technique is the pass of intensified denitrification and dephosphorization
Key makes full use of traditional A in design2O technique pond body, deoxidation pond (pond D) are embedded in traditional A2In O technique, it is located at A2O technique end
End, while aerobic tank water outlet being kept to be directly entered secondary settling tank；Aerobic tank water outlet is divided into 2 parts, a portion enters
It is back to anoxic pond after deoxidation pond (pond D) deoxidation, another part is directly entered secondary settling tank.
(3) after biological reaction pool is handled, sewage enters secondary settling tank and carries out mud-water separation, needs to maintain one in secondary settling tank
Fixed dissolved oxygen content prevents that anoxic denitrification occurs in secondary settling tank, generates nitrogen (N2) cause Mud up-floating, reduce secondary settling tank
Deposition efficiency.The effective ways for promoting secondary settling tank dissolved oxygen are that aeration water outlet is directly entered secondary settling tank, keep secondary settling tank water inlet molten
It solves oxygen and is greater than 2mg/L.
(4) the deoxidation pond (pond D) added can not only reduce the dissolved oxygen in mixed liquor reflux, reduce reflux dissolved oxygen pair
Denitrifying influence reduces the contention of dissolved oxygen carbon source limited for anoxic zone, improves denitrification denitrogenation effect；Also it can use
Internal carbon source in activated sludge carries out a part of anti-nitration reaction, improves the nitric efficiency of system.
Denitrification denitrogenation mainly passes through denitrifying bacteria, under conditions of anoxic, using biodegradable organic in sewage
Object, by the nitrate nitrogen (NO in backflow mixed liquor3 -- N and NO2 -- N) it is converted into nitrogen (N2).Dissolved oxygen on it is denitrifying influence compared with
Greatly, not only inhibit denitrifying bacteria growth, also contention is easy to the organic matter that denitrifying bacteria utilizes.In the presence of dissolved oxygen, sewage
In suitable biodegradable organic matter preferentially react with dissolved oxygen, limited organic matter in consumption water inlet, and then reduce sewage
Nitric efficiency.In addition, dissolved oxygen also reduces denitrifying bacteria activity, inhibit denitrifying bacteria reaction, reduces denitrification denitrogenation effect
Rate.Therefore in the present invention, setting deoxidation pond (pond D) can give full play to each processing structures advantage, reduce nitrification liquid and return
Dissolved oxygen in stream reduces consumption of the dissolved oxygen on denitrifying influence and to carbon source limited in water inlet, improves the denitrogenation of system
Efficiency.
(5) sludge concentration tank is added in returned sludge system, after returned sludge is further concentrated, then is back to anaerobism
Pond can not only promote the microbial biomass of anaerobic pond, and reducing returned sludge influences the hydraulic loading of anaerobic pond, improve dephosphorization
Efficiency can also reduce nitrate nitrogen and dissolved oxygen in sludge reflux, reduce nitrate nitrogen and dissolved oxygen releases anaerobic pond the shadow of phosphorus
It rings, phosphorus efficiency is released in raising, to improve whole system phosphor-removing effect.The supernatant of returned sludge concentration basin is preferably back to deoxidation pond
(pond D), is further processed；The supernatant pollutant concentration of sludge concentration tank is higher, by flowing back into deoxidation pond in supernatant
The pollutants such as organic matter, nitrogen and phosphorus be further processed, remove the pollutants such as organic matter, nitrogen and phosphorus in supernatant, reach
To the target for completely removing sludge supernatant pollutant.
Biological phosphate-eliminating is mainly removed by polyP bacteria anaerobic phosphorus release and aerobic phosphorus absorption, and the removal of phosphorus is by nitrate nitrogen and dissolution
Oxygen is affected.During anaerobic phosphorus release, stringent anaerobic environment should be kept.In the presence of nitrate nitrogen, with polyP bacteria contention
The dissolubility small organic molecule yield of easily biological-degradable, reduces the activity of polyP bacteria, affects polyP bacteria and releases phosphorus effect, from
And reduce system dephosphorization efficiency.Sludge concentration tank (pond D) is added in returned sludge system, can effectively improve returned sludge
Microorganism concn promotes returned sludge microbial biomass, increases polyP bacteria quantity, improves reaction efficiency, while can be to avoid big ratio
The diluting effect for anaerobic pond of example sludge reflux.Meanwhile sludge concentration tank can effectively reduce returned sludge dissolved oxygen and
Nitrate nitrogen, reduces dissolved oxygen and nitrate nitrogen releases polyP bacteria the influence of phosphorus, and be conducive to anaerobic pond releases phosphorus efficiency, can effectively be promoted
PolyP bacteria quantity in anaerobic pond, polyP bacteria sufficiently release phosphorus, improve system dephosphorization efficiency.Returned sludge concentration basin (pond D) it is upper
Clear liquid is preferably back to deoxidation pond (pond D), after making full use of deoxidation pond (pond D) to handle, is made on sludge condensation by nitrification liquid reflux
Clear liquid enters sewage disposal system, further removes organic matter, nitrogen and phosphorus content in supernatant, guarantees that effluent quality is up to standard.
In addition, sludge concentration tank only has sludge condensation effect, does not need sludge anaerobic and release phosphorus, the residence time is shorter, sludge
It is smaller that pool volume is concentrated, can effectively reduce construction investment.The utility model only sets 1 set of sludge recirculation system, and management operating is simple
Convenient, operating cost is low.The excess sludge of double sludge reflux biological phosphate-eliminatings residence time in concentration basin it is longer (anaerobic state,
Concentration time discharges phosphorus and forms the intracorporal Babes-Ernst bodies of polyP bacteria using the endogenous carbon of microorganism often in 3.0hr or more),
It is inoculated with polyP bacteria in biochemistry pool, improves the polyP bacteria ratio in reaction tank main body.This A2O-D2Cooperate with denitrification dephosphorization technique patent
Sludge concentration tank (pond D) main purpose is to improve returned sludge concentration, reduces nitrate nitrogen and dissolved oxygen in returned sludge, is conducive to
The strictly anaerobic of anaerobic pond is kept, the consumption of organic matter can be utilized by reducing polyP bacteria.The sludge concentration tank (pond D) of the utility model
Anaerobic phosphorus release is not needed, on the contrary, returned sludge should be avoided in the anaerobic phosphorus release in sludge concentration tank (pond D), anaerobic phosphorus release is anaerobism
The function in pond, returned sludge easily cause anoxic denitrification, cause Mud up-floating when the residence time is long in sludge concentration tank,
It can not precipitate.If in addition releasing phosphorus to be not thorough, whole system dephosphorization efficiency is also influenced.
In conclusion the utility model is in A2Aerobic tank end insertion deoxidation pond (pond D) of O technique and returned sludge system
On add sludge concentration tank (pond D), joined by advanced optimizing collaboration removal each technological reaction pool volume of technique etc. the designs of nitrogen phosphorus
Several and operating parameter improves the Nitrogen/Phosphorus Removal of system, reduces construction investment and operating cost, reaches maximized collaboration and goes
It denitrogenates, the target of phosphorus.
Detailed description of the invention
Fig. 1: the structural schematic diagram of utility model device；
Fig. 2: the structural schematic diagram in deoxidation pond and returned sludge concentration basin in utility model device；
Fig. 3: the structural schematic diagram in deoxidation pond in utility model device；
Fig. 4: the structural schematic diagram of sludge concentration tank in utility model device；
Wherein: 1 be anaerobic pond, 2 be anoxic pond, 3 be aerobic tank, 4 be deoxidation pond, 5 be secondary settling tank, 6 be sludge concentration tank,
7 be aerator, and 8 be underwater stirrer, and 9 be partition wall I, and 10 be partition wall II, and 11 be inclined plate, 12 pelagic divisions, 13 buffer layers, 14 ponds
Bottom.
Specific embodiment
Blue montains and green waters is exactly Kingsoft Yin Shan, and in recent years, Environmental improvement is increasingly paid attention to, and in water environment field, is
City black and odorous water is eliminated, needs to feed city river water using effluent of municipal sewage plant.Municipal sewage plant goes out
Water water quality improves year by year, and the more demanding regional effluent quality of water environment gradually requires to reach IV class water body of surface water or more high standard
Standard, and have the tendency that popularization.A2O-D2Denitrification dephosphorization technique is cooperateed with to promote biological carbon and phosphorous removal performance, it can effective guarantee sewage
The high standard effluent quality for the treatment of plant.
Municipal sewage plant's water is generally large, to reduce construction investment and operating cost, depth is needed to excavate level-one
The processing capacity of processing and two stage treatment, the especially treatment effect of two stage treatment determine final process ability, are then aided with depth
Degree processing, reaches final process target.A2O-D2The purpose of collaboration denitrification dephosphorization technique is exactly to promote the collaboration of two stage treatment nitrogen phosphorus to go
Except performance, advanced treating investment and operating cost are reduced, guarantees that effluent quality is up to standard.
A2O-D2Collaboration denitrification dephosphorization technique only needs to be embedded in deoxidation pond (pond D) in aerobic tank water outlet, in returned sludge system
Sludge concentration tank is added on system, can give full play to the limit capacity of biological denitrificaion, dephosphorization.A2O-D2Cooperate with denitrification dephosphorization technique not
It can only be used to A2O technique, it is also possible to which in the techniques such as oxidation ditch, CAST, MBR, technique using flexible has a wide range of application.A2O-D2
Cooperate with denitrification dephosphorization technique process simple, design rationally, gives full play to microbial performance, and denitrogenation dephosphorizing is high-efficient, is at second level
It manages intensified denitrification and dephosphorization and new approaches and a complete set of solutions is provided.
The utility model proposes A2O-D2Cooperate with pond body construction and the reflux in the deoxidation pond (pond D) of denitrification dephosphorization technique dirty
Designing points and the design parameters such as mud thickener (pond D) setting, simple structure, construction investment and operating cost are lower, in engineering
In have extraordinary promotional value.
A is used in Designing Sewage Treatment Plant2O-D2Denitrification dephosphorization technique is cooperateed with, according to sewage treatment plant inflow, water outlet water
Matter is optimized by technology Calculation and determines each processing unit volume, for the variation of water and water quality, adjusts anoxic, aerobic ratio,
Optimization aeration adjusts the modes such as nitrification liquid and sludge reflux, sufficiently realizes denitrogenation dephosphorizing performance, play at the limit of two stage treatment
Efficiency is managed, sewage disposal plant effluent water quality is improved, reduces investment and operating cost.
The utility model proposes A2O-D2Denitrification dephosphorization technique is cooperateed with, traditional A is made full use of2The advantages of O technique, into one
The denitrification effect that depth excavates two stage treatment is walked, efficient denitrification cooperates with raising biological phosphor-removing effect simultaneously, improves sewage treatment plant
Intensified denitrification and dephosphorization effect.
This technique is applicable not only to newly-built sewage treatment plant, is also suitble to current situation in improvement sewage treatment plant.
The utility model provides a kind of A first2O-D2The device of collaboration denitrogenation dephosphorizing, including sequentially connected anaerobic pond 1,
Anoxic pond 2, aerobic tank 3, municipal sewage obtain outputted aerobic water after anaerobism, anoxic, Aerobic Process for Treatment；Structure chart is as shown in Figs 1-4:
The aerobic tank, the inside of water outlet are embedded with deoxidation pond 4；The outside of water outlet is provided with discharge outlet, and
Discharge outlet is connected to secondary settling tank 5；
The deoxidation pond is provided with water inlet I, supernatant import and mixture export, in which: water inlet I with it is aerobic
It is connected inside pond, carries out deoxidation treatment to make to be flowed into deoxidation pond in aerobic tank by the outputted aerobic water that processing obtains；
The mixture export is connected with anoxic pond, continues so that the mixed liquor obtained after deoxidation treatment is back in anoxic pond
Carry out anoxic treatment；
The secondary settling tank is equipped with water inlet II, water outlet and sewage draining exit, in which: the draining of water inlet II and aerobic tank
Mouth is connected, and carries out precipitation process to make to be flowed into secondary settling tank in aerobic tank by the outputted aerobic water that processing obtains；Water outlet
Mouth is connected with outlet conduit, so that the water that obtains Jing Guo precipitation process is emitted into outside；Sewage draining exit is divided into two-way, all the way with
Mud discharging pipeline is connected, so that the mud discharging that precipitation process is obtained, to outside, another way is connected to sludge concentration tank
6；
The sludge concentration tank is equipped with sludge import, supernatant outlet and sludge outlet, in which: sludge import is heavy with two
The sewage draining exit in pond is connected, and takes off so that the sludge obtained in secondary settling tank through precipitation process is sent into sludge concentration tank and carry out concentration
Water process；Supernatant outlet is connected with the supernatant import in deoxidation pond, so that the supernatant that thickening is obtained is back to
Deoxidation continues deoxidation treatment in pond；The sludge outlet is connected with anaerobic pond, so that thickening is concentrated
Sludge reflux continues Anaerobic Treatment into anaerobic pond；
The bottom of the aerobic tank, the part in addition to deoxidation pond is arranged, other parts are uniformly equipped with aerator 7；
The deoxidation pond, is internally provided with underwater stirrer 8, prevents sludge settling；Underwater stirrer is evenly arranged in
The water surface is hereinafter, avoid being oxygenated and generating dead angle；Underwater stirrer preferably uses bottom deep-layer stirring device, further preferably hyperboloid
Blender, power preferably use 0.2-0.3 (W/m3)。
The aerobic tank, outputted aerobic water a part, which enters, carries out deoxidation treatment in deoxidation pond, another part enters
Precipitation process is carried out in sedimentation basin, the volume ratio of the two is 2-4:1, preferably 3:1.
Preferably, in order to reduce engineering construction difficulty, structures quantity is reduced, deoxidation pond is long side by aerobic tank, width
What side and partition wall were constituted, in which: one of partition wall I 9 is set up at the broadside 1/4 of aerobic tank, partition wall I prolongs into the pond of aerobic tank
It stretches and parallel with the long side of aerobic tank；The end of partition wall I connects one of partition wall II 10 normal thereto, the end of partition wall II with
The long side of aerobic tank is connected, and the length of partition wall II is the 3/4 of aerobic tank width edge length.
Preferably, the broadside of aerobic tank is divided into two by partition wall I, four sides one of of 3/4 length as deoxidation pond, and 1/4
Length any position setting discharge outlet.
The sludge concentration tank, preferably inclined-plate clarifying basin, in pond by be followed successively by under upper pelagic division 12, inclined plate area,
Buffer layer 13 and bottom of pond 14, in which: multiple inclined plates 11 are uniformly equipped in inclined plate area, inclined plate spacing is preferably 100-200mm, inclined plate
Plagioclase 1.2m, inclined plate level inclination are preferably 60 °；The height of pelagic division is preferably 1m (i.e. the depth of water on inclined plate area top is preferably 1m), is delayed
Rushing layer height is preferably 1m；Bottom of pond uses sludge bucket, and the skew wall of sludge bucket and the inclination angle of horizontal plane are preferably 60 °.
The utility model also provides a kind of A2O-D2The technique for cooperateing with denitrogenation dephosphorizing, comprising the following steps:
(1)A2O processing: traditionally, municipal sewage is successively imported anaerobic pond, anoxic pond, in aerobic tank successively
Outputted aerobic water is obtained after anaerobism, anoxic, Aerobic Process for Treatment, aeration when traditional Aerobic Process for Treatment has the work of mixing and oxygen supply
With increasing the dissolved oxygen in outputted aerobic water, guarantee the concentration of dissolved oxygen in outputted aerobic water in 2mg/L or more；Outputted aerobic water one
Part carries out deoxidation treatment, and another part carries out precipitation process；
(2) deoxidation treatment: obtaining a part of outputted aerobic water for step (1) and imported into deoxidation pond to carry out deoxidation treatment, takes off
The hydraulic detention time in oxygen pond is at least 0.5h, and is stirred in deoxidation treatment, prevents sludge settling；At deoxidation
Mixed liquor is obtained after reason, dissolved oxygen concentration should be controlled in 0.5mg/L hereinafter, mixed liquor is back in anoxic pond recycles in mixed liquor
It utilizes；
(3) precipitation process: a part of outputted aerobic water that step (1) obtains is imported into secondary settling tank, conventionally
Carry out precipitation process, the secondary clarifier effluent and sludge obtained after precipitation process, secondary clarifier effluent direct emission, sludge a part row
It puts, a part carries out thickening processing；
(4) thickening is handled: the partial sludge in step (3) being imported in sludge concentration tank and is carried out at thickening
Reason obtains supernatant and thickened sludge, and supernatant returns to be handled in deoxidation pond, and thickened sludge is back in anaerobic pond and recycles
It utilizes；
(5) circular treatment: the thickened sludge continuation to flow back in municipal sewage and step (4) conventionally carries out anaerobism
Processing, the middle mixed liquor continuation to flow back of the product and step (2) that Anaerobic Treatment obtains conventionally carry out anoxic treatment, lack
The product continuation that oxygen is handled conventionally carries out Aerobic Process for Treatment；Outputted aerobic water continues according to step (2) and step (3)
Operation carry out deoxidation treatment and precipitation process, such circular treatment, the water outlet of nitrogen phosphorus reaches design standard, handles through secondary settling tank
Afterwards, it is discharged direct emission.
The specific embodiments of technical solutions of the utility model is described in detail below, but the utility model be not limited to
Lower description content:
Embodiment 1:
In the present embodiment, waste water dam, treating capacity 20m are carried out to China central and east municipal sewage3/d.The city
In city's sewage, average COD of intakingCrFor 280mg/L, total nitrogen 39mg/L, ammonia nitrogen 27.5mg/L, total phosphorus 7.6mg/L.
A kind of A2O-D2The technique for cooperateing with denitrogenation dephosphorizing, comprising the following steps:
(1)A2O processing: conventionally, municipal sewage is successively imported anaerobic pond, anoxic pond, in aerobic tank successively
Outputted aerobic water is obtained after anaerobism, anoxic, Aerobic Process for Treatment, Air Exposure when traditional Aerobic Process for Treatment has mixing and oxygen supply
Effect, increase the dissolved oxygen in outputted aerobic water, guarantee the concentration of dissolved oxygen in outputted aerobic water in 2-3mg/L；Outputted aerobic water
3/4 carries out deoxidation treatment, and 1/4 carries out precipitation process；
(2) step (1) deoxidation treatment: is obtained into 3/4 (volume 0.5m3) outputted aerobic water imported into deoxidation pond and taken off
Oxygen processing, hydraulic detention time 36min, and be stirred when deoxidation treatment, prevent sludge settling；After deoxidation treatment
Mixed liquor is obtained, dissolved oxygen concentration is in 0.5mg/L hereinafter, mixed liquor is back in anoxic pond recycles in mixed liquor；
(3) precipitation process: 1/4 outputted aerobic water that step (1) obtains is imported into secondary settling tank, is conventionally carried out
Precipitation process, the secondary clarifier effluent and sludge obtained after precipitation process, secondary clarifier effluent direct emission, the discharge of sludge a part
(about 1/30th), a part carry out thickening processing (about 29/30ths).
(4) thickening is handled: the partial sludge in step (3) being imported in sludge concentration tank and is carried out at thickening
Reason, the concentration time of thickening processing are 0.6h, obtain supernatant and thickened sludge, and supernatant, which returns, recycles benefit in deoxidation pond
With thickened sludge is back in anaerobic pond and recycles；
(5) circular treatment: the thickened sludge continuation to flow back in municipal sewage and step (4) conventionally carries out anaerobism
Processing, the middle mixed liquor continuation to flow back of the product and step (2) that Anaerobic Treatment obtains conventionally carry out anoxic treatment, lack
The product continuation that oxygen is handled conventionally carries out Aerobic Process for Treatment；Aerobic Process for Treatment water outlet continues according to step (2) and step
Suddenly the operation of (3) carries out deoxidation treatment and precipitation process, such circular treatment.The average COD of water outletCrFor 22.5mg/L, total nitrogen
For 6.4mg/L, ammonia nitrogen 1mg/L, total phosphorus 0.1mg/L.
In the present embodiment, the end of aerobic tank is embedded in deoxidation pond, and outputted aerobic water a part carries out deoxidation treatment, another part
Precipitation process is carried out, the volumetric ratio of the two is 3:1, the deoxidation pond being made of partition wall I and partition wall II and aerobic tank long side, broadside
Volume is 0.5m3.In the present embodiment, underwater stirrer 1 is arranged in deoxidation pond.In the present embodiment, sludge concentration tank is inclined plate
Sedimentation basin, inclined plate spacing are 150mm, and inclined plate level inclination is preferably 60 °；Bottom of pond uses sludge bucket, the skew wall and level of sludge bucket
The inclination angle in face is 60 °.
Embodiment 2:
In the present embodiment, waste water dam, treating capacity 50m are carried out to south China municipal sewage3/d.The city
In sewage, average COD of intakingCrFor 120mg/L, total nitrogen 26.7mg/L, ammonia nitrogen 23.3mg/L, total phosphorus 2.4mg/L.
A kind of A2O-D2The technique for cooperateing with denitrogenation dephosphorizing, comprising the following steps:
(1)A2O processing: conventionally, municipal sewage is successively imported anaerobic pond, anoxic pond, in aerobic tank successively
Outputted aerobic water is obtained after anaerobism, anoxic, Aerobic Process for Treatment, Air Exposure when traditional Aerobic Process for Treatment has mixing and oxygen supply
Effect, increase the dissolved oxygen in outputted aerobic water, guarantee the concentration of dissolved oxygen in outputted aerobic water in 2-2.5mg/L；It is aerobic go out
Water 3/4 carries out deoxidation treatment, and 1/4 carries out precipitation process；
(2) step (1) deoxidation treatment: is obtained into 3/4 (volume 1.1m3) outputted aerobic water imported into deoxidation pond and taken off
Oxygen processing, hydraulic detention time 32min, and be stirred when deoxidation treatment, prevent sludge settling；After deoxidation treatment
Mixed liquor is obtained, dissolved oxygen concentration is in 0.5mg/L hereinafter, mixed liquor is back in anoxic pond recycles in mixed liquor；
(3) precipitation process: 1/4 outputted aerobic water that step (1) obtains is imported into secondary settling tank, is conventionally carried out
Precipitation process, the secondary clarifier effluent and sludge obtained after precipitation process, secondary clarifier effluent direct emission, the discharge of sludge a part
(about 1/30th), a part carry out thickening processing (about 29/30ths).
(4) thickening is handled: the partial sludge in step (3) being imported in sludge concentration tank and is carried out at thickening
Reason, the concentration time of thickening processing are 0.5h, obtain supernatant and thickened sludge, and supernatant, which returns, recycles benefit in deoxidation pond
With thickened sludge is back in anaerobic pond and recycles；
(5) circular treatment: the thickened sludge continuation to flow back in municipal sewage and step (4) conventionally carries out anaerobism
Processing, the middle mixed liquor continuation to flow back of the product and step (2) that Anaerobic Treatment obtains conventionally carry out anoxic treatment, lack
The product continuation that oxygen is handled conventionally carries out Aerobic Process for Treatment；Aerobic Process for Treatment water outlet continues according to step (2) and step
Suddenly the operation of (3) carries out deoxidation treatment and precipitation process, such circular treatment.It is discharged average CODCrIt is for 17mg/L, total nitrogen
11.1mg/L, ammonia nitrogen 1.3mg/L, total phosphorus 0.6mg/L.
In the present embodiment, the end of aerobic tank is embedded in deoxidation pond, and outputted aerobic water a part carries out deoxidation treatment, another part
Precipitation process is carried out, the volumetric ratio of the two is 3:1, the deoxidation pond being made of partition wall I and partition wall II and aerobic tank long side, broadside
Volume is 1.1m3.In the present embodiment, underwater stirrer 1 is arranged in deoxidation pond.In the present embodiment, sludge concentration tank is inclined plate
Sedimentation basin, inclined plate spacing are 200mm, and inclined plate level inclination is preferably 60 °；Bottom of pond uses sludge bucket, the skew wall and level of sludge bucket
The inclination angle in face is 60 °.
Examples detailed above is only the technical conception and technical characteristics for illustrating the utility model, can not limit this reality with this
With novel protection scope.The equivalent transformation or modification that all essence according to the present utility model is done, should all cover in this reality
Within novel protection scope.
Claims (8)
1. a kind of A2O-D2Cooperate with the device of denitrogenation dephosphorizing, including sequentially connected anaerobic pond (1), anoxic pond (2), aerobic tank
(3), municipal sewage obtains outputted aerobic water after anaerobism, anoxic, Aerobic Process for Treatment；It is characterized by:
The aerobic tank, the inside of water outlet are embedded with deoxidation pond (4)；The outside of water outlet is provided with discharge outlet, and arranges
The mouth of a river is connected to secondary settling tank (5)；
The deoxidation pond is provided with water inlet I, supernatant import and mixture export, in which: in water inlet I and aerobic tank
Portion is connected, and carries out deoxidation treatment to make to be flowed into deoxidation pond in aerobic tank by the outputted aerobic water that processing obtains；It is described
Mixture export be connected with anoxic pond, continue so that the mixed liquor obtained after deoxidation treatment is back in anoxic pond
Anoxic treatment；
The secondary settling tank is equipped with water inlet II, water outlet and sewage draining exit, in which: the discharge outlet phase of water inlet II and aerobic tank
Connection carries out precipitation process to make to be flowed into secondary settling tank in aerobic tank by the outputted aerobic water that processing obtains；Water outlet with
Outlet conduit is connected, so that the water that obtains Jing Guo precipitation process is emitted into outside；Sewage draining exit is divided into two-way, all the way with sludge
Discharge tube is connected, so that the mud discharging that precipitation process is obtained, to outside, another way is connected to sludge concentration tank；
The sludge concentration tank (6) is equipped with sludge import, supernatant outlet and sludge outlet, in which: sludge import and secondary settling tank
Sewage draining exit be connected, thus by the sludge obtained in secondary settling tank through precipitation process be sent into sludge concentration tank in carry out thickening
Processing；Supernatant outlet is connected with the supernatant import in deoxidation pond, thus the supernatant that thickening is obtained be back to it is de-
Oxygen continues deoxidation treatment in pond；The sludge outlet is connected with anaerobic pond, so that it is dirty that thickening is obtained concentration
Mud, which is back in anaerobic pond, continues Anaerobic Treatment.
2. the apparatus according to claim 1, it is characterised in that: the bottom of the aerobic tank, in addition to setting deoxidation pond
Part, other parts are uniformly equipped with aerator (7).
3. the apparatus according to claim 1, it is characterised in that: the deoxidation pond is internally provided with underwater stirrer
(8), underwater stirrer is evenly arranged in the water surface or less.
4. device according to claim 3, it is characterised in that: the underwater stirrer uses bottom deep-layer stirring device,
Specially Double-curved-surface stirring device, power 0.2-0.3W/m3。
5. the apparatus according to claim 1, it is characterised in that: deoxidation pond is by the long side of aerobic tank, broadside and partition wall structure
At, in which: set up one of partition wall I (9) at the broadside 1/4 of aerobic tank, partition wall I extend into the pond of aerobic tank and with it is aerobic
The long side in pond is parallel；The end of partition wall I connects one of partition wall II (10) normal thereto, the end of partition wall II and the length of aerobic tank
While being connected, and the length of partition wall II is the 3/4 of aerobic tank width edge length.
6. device according to claim 5, it is characterised in that: the broadside of aerobic tank is divided into two by partition wall I, 3/4 length
Spend one of four sides as deoxidation pond, any position setting of the 1/4 length discharge outlet.
7. the apparatus according to claim 1, it is characterised in that: the sludge concentration tank is inclined-plate clarifying basin, in pond by
Pelagic division, inclined plate area, buffer layer and bottom of pond are followed successively by under upper, in which: multiple inclined plates are uniformly equipped in inclined plate area, between inclined plate
Away from for 100-200mm, inclined plate plagioclase 1.2m, inclined plate level inclination is 60 °；The height of pelagic division is 1m, and buffering layer height is 1m；
Bottom of pond uses sludge bucket, and the skew wall of sludge bucket and the inclination angle of horizontal plane are 60 °.
8. the apparatus according to claim 1, it is characterised in that: the aerobic tank, outputted aerobic water a part enter de-
Deoxidation treatment is carried out in oxygen pond, another part enters and carries out precipitation process in sedimentation basin, and the volume ratio of the two is 2-4:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821247674.1U CN208667430U (en) | 2018-08-03 | 2018-08-03 | A kind of A2O-D2Cooperate with the device of denitrogenation dephosphorizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821247674.1U CN208667430U (en) | 2018-08-03 | 2018-08-03 | A kind of A2O-D2Cooperate with the device of denitrogenation dephosphorizing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208667430U true CN208667430U (en) | 2019-03-29 |
Family
ID=65832360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821247674.1U Active CN208667430U (en) | 2018-08-03 | 2018-08-03 | A kind of A2O-D2Cooperate with the device of denitrogenation dephosphorizing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208667430U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108675575A (en) * | 2018-08-03 | 2018-10-19 | 北京市市政工程设计研究总院有限公司 | A kind of A2O-D2Cooperate with the technique and device of denitrogenation dephosphorizing |
| CN111847774A (en) * | 2020-07-10 | 2020-10-30 | 珠海九通水务股份有限公司 | Application method of mud-water separation tank |
-
2018
- 2018-08-03 CN CN201821247674.1U patent/CN208667430U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108675575A (en) * | 2018-08-03 | 2018-10-19 | 北京市市政工程设计研究总院有限公司 | A kind of A2O-D2Cooperate with the technique and device of denitrogenation dephosphorizing |
| CN111847774A (en) * | 2020-07-10 | 2020-10-30 | 珠海九通水务股份有限公司 | Application method of mud-water separation tank |
| CN111847774B (en) * | 2020-07-10 | 2022-05-03 | 珠海九通水务股份有限公司 | Application method of mud-water separation tank |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106565017B (en) | A kind of bicirculating denitrogenation dephosphorizing waste water treatment system and its method | |
| CN106277319B (en) | A kind of Bardenpho denitrification dephosphorization technique based on MBBR | |
| CN108675575A (en) | A kind of A2O-D2Cooperate with the technique and device of denitrogenation dephosphorizing | |
| CN103936229B (en) | A kind of municipal sewage improvement A2/ O intensified denitrification and dephosphorization processes device and technique | |
| CN202054705U (en) | Magnetic loading A2/O sewage treatment device | |
| CN101269882B (en) | Integrated oxidation ditch, construction and operation method | |
| CN102838205B (en) | External continuous flow aerobic granular sludge membrane bioreactor | |
| CN105293834B (en) | Integral type IODS reactors | |
| CN100569669C (en) | Anaerobic-anoxic oxidation pitch technique denitrification dephosphorization device and method thereof | |
| CN103373794A (en) | Sewage treatment process and special-purpose one-piece sewage treatment plant | |
| CN102001787B (en) | Anaerobic microporous aerator oxidation ditch reactor and sewage treatment method | |
| CN107585974B (en) | Sewage treatment method based on MBBR (moving bed biofilm reactor) process | |
| CN212292993U (en) | BioDopp biochemical reactor for deeply removing high-concentration organic pollutants | |
| CN1686862A (en) | Improved type alternated technique for wastewater treatment of activated sludge process and equipment | |
| CN101823814B (en) | Method and system of integrated denitrifying phosphorus and nitrogen removal | |
| CN103121754A (en) | Denitrification and dephosphorization technique | |
| CN102180543A (en) | Highly-efficient stable bio-doubling sewage treatment device | |
| CN209226777U (en) | A kind of reinforcing advanced nitrogen dephosphorization process sewage-treatment plant | |
| CN208667430U (en) | A kind of A2O-D2Cooperate with the device of denitrogenation dephosphorizing | |
| CN105174642A (en) | Efficient biological denitrification method for sewage | |
| CN201325907Y (en) | Sewage treatment system for oxidation ditch | |
| CN212375119U (en) | Sewage treatment system in multi-functional district | |
| CN105130092A (en) | Treatment device and method for degradation and nitrogen removal of printing and dyeing wastewater high-concentration organic matters | |
| CN218810847U (en) | AAO sewage treatment system of improvement | |
| CN109775936B (en) | Low-energy-consumption domestic sewage treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |