CN207313242U - A kind of split reflux declines oxygen denitrification reactor - Google Patents
A kind of split reflux declines oxygen denitrification reactor Download PDFInfo
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- CN207313242U CN207313242U CN201721192760.2U CN201721192760U CN207313242U CN 207313242 U CN207313242 U CN 207313242U CN 201721192760 U CN201721192760 U CN 201721192760U CN 207313242 U CN207313242 U CN 207313242U
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Abstract
The utility model discloses a kind of split reflux to decline oxygen denitrification reactor, including denitrification reactor and secondary settling tank, the bottom of the denitrification reactor is provided with micro-pore aeration equipment and water distribution pipe network, the water distribution pipe network is circumscribed with water inlet pipe, formed with sludge settling area and mixing liquid zone in the secondary settling tank, mud return line and mixed-liquor return pipe are provided between the denitrification reactor and the secondary settling tank, one end of the mud return line connects the sludge settling area of the secondary settling tank, the other end of the mud return line connects the inside of the denitrification reactor, sludge pump is provided with the mud return line, one end of the mixed-liquor return pipe connects the mixing liquid zone of the secondary settling tank, the other end of the mixed-liquor return pipe connects the water inlet pipe, reflux pump is provided with the mixed-liquor return pipe.The technical program is used to solve the problems, such as complicated there are technological process in existing sewage water denitrification technique, it is necessary to extra supplementary carbon source and basicity.
Description
Technical field
The utility model belongs to technical field for the treatment of of organic waste, and in particular to a kind of split reflux declines oxygen denitrification reaction
Device.
Background technology
Bio-denitrifying sewage be nitrogenous compound after ammonification, nitrification, denitrification, the mistake that is changed into nitrogen and is removed
Journey.The conversion of nitrogen mainly includes ammonification, the effect of nitrification and denitrification in processing procedure, and wherein ammonification can be in aerobic or anaerobism
Under the conditions of carry out, nitrification is carried out under aerobic condition, and denitrification carries out under anoxic conditions.So general place
Science and engineering skill is required for setting corresponding reaction vessel to realize these stages, and conventional NH_3-N treating technique has following several
Type：
1st, three-stage denitrification process, the technique is independent by organic matter, nitrification and denitrification, and each section has oneself
Sedimentation basin and independent sludge recirculation system.
2nd, denitrification section is arranged on before system by preposition Anoxybiotic-aerobic biologic denitrification process, the technique, and denitrification is anti-
It should contain a large amount of nitrate in the mixed liquor of aeration tank using the organic matter in sewage as carbon source, pass through inner circulating reflux to anoxic pond
In, denitrification denitrogenation is carried out in anoxic pond.
3rd, postposition Anoxybiotic-aerobic biologic denitrification process, the technique set aerobic and hypoxia response pond, and sewage first passes through aerobic
Pond carries out removal and the nitration reaction of organic matter, then is flowed into anoxic pond and carries out denitrification.
These traditional biological denitrificaion treatment process are all there are certain technological deficiency, although some technique treatment effeciencies are high
But flow is excessively complicated, and in order to ensure that system normal operation needs extra supplementary carbon source and basicity, increase operating cost.
Utility model content
For above-mentioned technical problem, the utility model provides a kind of split reflux and declines oxygen denitrification reactor,
It is complicated there are technological process, it is necessary to extra supplementary carbon source and basicity, the split in existing sewage water denitrification technique to solve the problems, such as
The reflux oxygen denitrification reactor that declines is flowed back by Split type structure, is being not provided with the situation of anoxic and aerobic individually reactor,
So that the effect of oxidation operation, nitrification and denitrification is carried out in same reactor.
A kind of split reflux declines oxygen denitrification reactor, including denitrification reactor and secondary settling tank, the denitrification reactor
Bottom is provided with micro-pore aeration equipment and water distribution pipe network, and the micro-pore aeration equipment is located at the bottom of the water distribution pipe network, described
Micro-pore aeration equipment is circumscribed with air inlet pipe, and the water distributor is provided with multiple water outlets on the net, the water distribution pipe network be circumscribed with into
Water pipe, is provided with the first water outlet at the top of the denitrification reactor, is connected between first water outlet and the secondary settling tank
There is overflow pipe, the second water outlet is provided with the top of the secondary settling tank, the secondary settling tank is interior formed with sludge settling area and mixing
Liquid zone, is provided with mud return line and mixed-liquor return pipe between the denitrification reactor and the secondary settling tank, the sludge returns
One end of flow tube connects the sludge settling area of the secondary settling tank, and the other end of the mud return line connects the denitrification reactor
Inside, sludge pump is provided with the mud return line, one end of the mixed-liquor return pipe connects the mixed of the secondary settling tank
Liquid zone is closed, the other end of the mixed-liquor return pipe connects the water inlet pipe, reflux pump is provided with the mixed-liquor return pipe.
Further, the micro-pore aeration equipment is microporous aeration disc or micro-pore aeration pipe network.
Further, the bottom of the secondary settling tank is inverted cone-shaped structure, and the mud return line extends to the back taper
The bottom of structure.
Further, hollow flow-guiding pipe is provided with the middle part of the secondary settling tank, the hollow flow-guiding pipe is vertically arranged, and described
The open top of hollow flow-guiding pipe is exposed to the liquid level of the secondary settling tank, and gear is provided with the bottom opening of the hollow flow-guiding pipe
Flowing plate, one end of the overflow pipe connect first water outlet, and the other end of the overflow pipe connects the diversion pipe.
In the micro- oxygen denitrification reactor of this split reverse-flow type, oxidation operation, nitrification and denitrification are in the reactor at the same time
Realize, therefore aerobic, anoxic and anaerobic pond need not be separately provided, reduce reactor cell appearance, accelerate reaction process raising
Nitric efficiency.And during the reaction, the OH- that denitrification produces can neutralize the part H that nitrification produces, and reduce the ripple of PH
It is dynamic, system is more stablized.Whole system running environment, which is in micro- oxygen condition, can save energy needed for aeration.It is aerated by controlling
System makes reactor be chronically at micro- oxygen environment, sludge settling is carried out using secondary settling tank, by the way that the mixed liquor in secondary settling tank is led to
Cross the exteenal reflux operation that mud return line carries out denitrification reactor.The situation of anoxic and aerobic individually reactor is being not provided with, is being made
The effect that oxidation operation, nitrification and denitrification are carried out in same reactor is obtained, effectively increases sewage treating efficiency.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is that a kind of split reflux declines the structure diagram of oxygen denitrification reactor.
Embodiment
The utility model discloses a kind of split reflux to decline oxygen denitrification reactor, and split reflux declines oxygen denitrification reaction
Device is flowed back by Split type structure, is being not provided with the situation of anoxic and aerobic individually reactor so that in same reactor
Carry out the effect of oxidation operation, nitrification and denitrification.
Below in conjunction with the attached drawing in the utility model, the technical solution in the utility model is carried out clearly and completely
Description, it is clear that described is only the utility model part of the embodiment, instead of all the embodiments.Based on this practicality
Embodiment in new, those of ordinary skill in the art are obtained every other on the premise of creative work is not made
Embodiment, shall fall within the protection scope of the present invention.
Shown in Figure 1, the utility model discloses a kind of split reflux to decline oxygen denitrification reactor, including denitrification reaction
Device 6 and secondary settling tank 13, the bottom of the denitrification reactor 6 are provided with micro-pore aeration equipment 4 and water distribution pipe network 5, and the micropore exposes
Gas equipment 4 is located at the bottom of the water distribution pipe network 5, and the micro-pore aeration equipment 4 is circumscribed with air inlet pipe 7, on the water distribution pipe network 5
Multiple water outlets are provided with, the water distribution pipe network 5 is circumscribed with water inlet pipe 3, and the top of the denitrification reactor 6 is provided with first and goes out
The mouth of a river 8, is connected with overflow pipe 10 between first water outlet 8 and the secondary settling tank 13, the top of the secondary settling tank 13 is set
There is 14 mouthfuls of the second water outlet, formed with sludge settling area 1 and mixing liquid zone 2 in the secondary settling tank 13, the denitrification reactor 6 and institute
State and mud return line 9 and mixed-liquor return pipe 15 are provided between secondary settling tank 13, described in one end connection of the mud return line 9
The sludge settling area 1 of secondary settling tank 13, the other end of the mud return line 9 connect the inside of the denitrification reactor 6, the dirt
Sludge pump is provided with mud return duct 9（It is not shown）, one end of the mixed-liquor return pipe 15 connects the mixed of the secondary settling tank 13
Liquid zone 2 is closed, the other end of the mixed-liquor return pipe 15 connects the water inlet pipe 3, is provided with the mixed-liquor return pipe 15
Reflux pump（It is not shown）.
6 bottommost of denitrification reactor is micro-pore aeration equipment 4, is water distribution pipe network 5 toward last layer, sewage by pre-treatment it
Afterwards by water distribution pipe network 5 even into denitrification reactor 6.Waste water is flowed into secondary settling tank 13 and carries out after denitrification reactor 6
Mud-water separation, a part of sludge discharge system, another part are then reentered in denitrification reactor 6 by mud return line,
Maintain the concentration of microorganism in denitrification reactor 6.Denitrification reactor 6 controls whole service environment to grow by micro-pore aeration equipment 4
Phase is in micro- oxygen condition（Dissolved oxygen is between 0.6-0.8）, organic matter comes into full contact with through water distribution pipe network 5 with microorganism.Due to micro-
Hole aerator 4 under water distribution pipe network 5, therefore micro-pore aeration equipment 4 can not only be provided for microorganism needed for dissolved oxygen environment,
But also certain stirring action can be played.By anti-there are nitrification and denitrification at the same time in the environment reactor of micro- oxygen
Should, since influent concentration higher consumption dissolved oxygen in bottom is more, the environment of an opposite anaerobism can be formed.With the lifting of water level
Organic matter dissolved oxygen of constantly degrading gradually rises, and a relatively aerobic region can be formed on 6 top of denitrification reactor.Due to de-
The limitation of 6 structure of Analysis, might have a part of nitre state and nitrite nitrogen as water outlet is entered in secondary settling tank 13.This
Part nitre state and nitrite nitrogen can not only influence effluent quality, also result in secondary settling tank 13 and denitrification generation nitrogen occurs,
Cause Mud up-floating.Therefore by by mixed-liquor return pipe 15 by the mixed liquor at the middle part of secondary settling tank 13（Nitre state and nitrite nitrogen）
Again it is back to 6 bottom anaerobic zone of secondary settling tank and carries out denitrification, realizes the removal of ammonia nitrogen.
The micro-pore aeration equipment 4 is microporous aeration disc or micro-pore aeration pipe network.
The bottom of the secondary settling tank 13 is inverted cone-shaped structure, is conducive to the concentration sedimentation of sludge, and the mud return line 9 prolongs
Extend the bottom of the inverted cone-shaped structure.
The middle part of the secondary settling tank 13 is provided with hollow flow-guiding pipe 12, and the hollow flow-guiding pipe 12 is vertically arranged, and it is described in
The open top of empty diversion pipe 12 is exposed to the liquid level of the secondary settling tank 13, is set at the bottom opening of the hollow flow-guiding pipe 12
There is a flow-stopping plate 11, one end of the overflow pipe 10 connects first water outlet 8, described in the other end connection of the overflow pipe 10
Diversion pipe 12, by 12 pipe of hollow flow-guiding can by the sewage for flowing into secondary settling tank 13 toward lower section water conservancy diversion, avoid sewage without
Sedimentation is directly flowed out from the second water outlet 14, while is provided with flow-stopping plate 11, avoids downward sewage from producing punching to base sludge
Hit, influence effect of settling.
In the micro- oxygen denitrification reactor of this split reverse-flow type, oxidation operation, nitrification and denitrification are in the reactor at the same time
Realize, therefore aerobic, anoxic and anaerobic pond need not be separately provided, reduce reactor cell appearance, accelerate reaction process raising
Nitric efficiency.And during the reaction, the OH- that denitrification produces can neutralize the part H that nitrification produces, and reduce the ripple of PH
It is dynamic, system is more stablized.Whole system running environment, which is in micro- oxygen condition, can save energy needed for aeration.It is aerated by controlling
System makes reactor be chronically at micro- oxygen environment, and using secondary settling tank progress sludge settling, the mixed liquor in secondary settling tank passes through sludge
Return duct carries out the exteenal reflux operation of denitrification reactor.It is being not provided with the situation of anoxic and aerobic individually reactor so that same
The effect of oxidation operation, nitrification and denitrification is carried out in a reactor, effectively increases sewage treating efficiency.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that the specific implementation of the utility model is confined to these explanations.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be regarded
To belong to the scope of protection of the utility model.
Claims (4)
- The oxygen denitrification reactor 1. a kind of split reflux declines, it is characterised in that including denitrification reactor and secondary settling tank, the denitrogenation The bottom of reactor is provided with micro-pore aeration equipment and water distribution pipe network, and the micro-pore aeration equipment is located at the bottom of the water distribution pipe network Portion, the micro-pore aeration equipment are circumscribed with air inlet pipe, and the water distributor is provided with multiple water outlets on the net, outside the water distribution pipe network Be connected to water inlet pipe, be provided with the first water outlet at the top of the denitrification reactor, first water outlet and the secondary settling tank it Between be connected with overflow pipe, the second water outlet is provided with the top of the secondary settling tank, formed with sludge settling area in the secondary settling tank With mixing liquid zone, mud return line and mixed-liquor return pipe are provided between the denitrification reactor and the secondary settling tank, it is described One end of mud return line connects the sludge settling area of the secondary settling tank, and the other end of the mud return line connects the denitrogenation The inside of reactor, sludge pump is provided with the mud return line, and one end connection described two of the mixed-liquor return pipe is heavy The mixing liquid zone in pond, the other end of the mixed-liquor return pipe connect the water inlet pipe, are provided with the mixed-liquor return pipe Reflux pump.
- The oxygen denitrification reactor 2. a kind of split reflux according to claim 1 declines, it is characterised in that the micro-pore aeration Equipment is microporous aeration disc or micro-pore aeration pipe network.
- The oxygen denitrification reactor 3. a kind of split reflux according to claim 1 declines, it is characterised in that the secondary settling tank Bottom is inverted cone-shaped structure, and the mud return line extends to the bottom of the inverted cone-shaped structure.
- The oxygen denitrification reactor 4. a kind of split reflux according to claim 1 declines, it is characterised in that in the secondary settling tank Portion is provided with hollow flow-guiding pipe, and the hollow flow-guiding pipe is vertically arranged, and the open top of the hollow flow-guiding pipe is exposed to institute The liquid level of secondary settling tank is stated, flow-stopping plate, one end connection institute of the overflow pipe are provided with the bottom opening of the hollow flow-guiding pipe The first water outlet is stated, the other end of the overflow pipe connects the diversion pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721192760.2U CN207313242U (en) | 2017-09-18 | 2017-09-18 | A kind of split reflux declines oxygen denitrification reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721192760.2U CN207313242U (en) | 2017-09-18 | 2017-09-18 | A kind of split reflux declines oxygen denitrification reactor |
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| CN207313242U true CN207313242U (en) | 2018-05-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445299A (en) * | 2017-09-18 | 2017-12-08 | 广东益康生环保服务有限公司 | A kind of split backflow declines oxygen denitrification reactor |
| CN112250186A (en) * | 2020-10-09 | 2021-01-22 | 北京华益德环境科技有限责任公司 | High-efficiency synchronous nitrification and denitrification reactor |
-
2017
- 2017-09-18 CN CN201721192760.2U patent/CN207313242U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445299A (en) * | 2017-09-18 | 2017-12-08 | 广东益康生环保服务有限公司 | A kind of split backflow declines oxygen denitrification reactor |
| CN112250186A (en) * | 2020-10-09 | 2021-01-22 | 北京华益德环境科技有限责任公司 | High-efficiency synchronous nitrification and denitrification reactor |
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