CN205773635U - A kind of oxidation ditch nitrogen rejection facility - Google Patents
A kind of oxidation ditch nitrogen rejection facility Download PDFInfo
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- CN205773635U CN205773635U CN201620519448.9U CN201620519448U CN205773635U CN 205773635 U CN205773635 U CN 205773635U CN 201620519448 U CN201620519448 U CN 201620519448U CN 205773635 U CN205773635 U CN 205773635U
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- denitrification
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- denitrification zone
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Abstract
This utility model relates to a kind of oxidation ditch nitrogen rejection facility, belongs to the processing technology field of water, waste water, sewage or mud.Including water inlet pipe, aeration zone, denitrification zone, reflux sludge tube and outlet pipe, aeration zone is followed successively by aeration zone one, aeration zone two, aeration zone three and aeration zone four, and be distributed with serpentine circuit, denitrification zone includes denitrification zone one and denitrification zone two, and regurgitant orifice is set between aeration zone four and denitrification zone one, water inlet pipe connects with aeration zone one and denitrification zone one respectively.Utility model is applied to dyeing waste water denitrogenation, there is the advantages such as nitric efficiency is high, floor space is little, improvement cost is low.
Description
Technical field
This utility model relates to a kind of oxidation ditch nitrogen rejection facility, belongs to the processing technology field of water, waste water, sewage or mud.
Background technology
Dyeing waste water would generally contain NO3-、NH4+, the existence of these ions can affect total nitrogen content of waste discharge, and total nitrogen content is too high, can cause body eutrophication, therefore, generally carry out denitrogenation processing in processing procedure.Conventional denitrogenation mode is mainly by three kinds: the first is the structure using oxidation ditch, device as shown in Figure 1, it is according to process pond is divided into shown in Fig. 1 1a(nitrification zone, aeration zone) and non-aeration district (denitrification zone), 1a(nitrification zone, aeration zone) dissolved oxygen require at 3-5mg/L, it is the shortest that it's the stream response time pasts non-aeration district (denitrification zone) single, actual dissolved oxygen is far above 0.5mg/l, in oxidation ditch, nitration reaction is sufficient and anti-nitration reaction is insufficient, and nitrogen removal rate is typically at 40%-50%；The second is first to arrange a denitrification process system or denitrification zone, aeration treatment system (nitration processes section is set) or nitrification zone again, the mud mixture of aeration treatment system (arranging nitration processes section) or nitrification zone delivers to denitrification process system or denitrification zone by internal reflux, in its operating process, the stain disease of denitrification process section or denitrification zone is as carbon source, require that internal reflux ratio controls at 100-300%, flow is relatively big, requires higher to internal diameter of the pipeline, and construction cost is high；The third is to be separately provided denitrification processing system (as denitrification section) after stain disease aeration treatment system (as nitration section), and aeration treatment system (as nitration section) dissolved oxygen requires at 3-5mg/L, by NH4+It is converted into NO2-, belonging to aerobic treatment region, dissolved oxygen is then controlled at below 0.5mg/L, by NO by denitrification processing system (as denitrification section)3-It is converted into N2, need additional CH3OH is as denitrifying carbon source, and its processing cost is higher.Such as the structure of the first oxidation ditch, transformation is complicated and difficulty is big.
Based on this, make the application.
Utility model content
In order to overcome the drawbacks described above existing for existing denitrogenation operation, the application provides a kind of oxidation ditch nitrogen rejection facility.
For achieving the above object, the technical scheme that the application takes is as follows:
A kind of oxidation ditch nitrogen rejection facility, including water inlet pipe, aeration zone, denitrification zone, reflux sludge tube and outlet pipe, described aeration zone is distributed in square nitrogen rejection facility with denitrification zone, aeration zone flows to be followed successively by aeration zone one according to waste water, aeration zone two, aeration zone three and aeration zone four, and be distributed with serpentine circuit, denitrification zone includes denitrification zone one and denitrification zone two, and between aeration zone four and denitrification zone one, regurgitant orifice is set, arrange pump at regurgitant orifice to be pressed in denitrification zone one by the waste water of aeration zone four, described water inlet pipe is between aeration zone and denitrification zone, and its end connects with aeration zone one and denitrification zone one respectively, between denitrification zone one and denitrification zone two, dividing plate is set, and between denitrification zone and aeration zone three, overflow plate is set；Described outlet pipe is positioned at outside overflow plate；Described reflux sludge tube is arranged at the middle part of aeration zone one and place, aeration zone four end, and reflux sludge tube and water inlet pipe homonymy.
Further, as preferably:
Being provided with arc turn-around wall in described aeration zone, turn-around wall is divided into outer wall, mesospore and inwall, and logical flow passage between outer wall and mesospore between aeration zone one and aeration zone two, by the flow passage between mesospore and inwall between aeration zone three and aeration zone four.
Described overflow plate is that two sides is arc, respectively as aeration zone two and aeration zone three, denitrification zone one and the turn-around wall of denitrification zone two.
Described aeration zone arranges aeration group, aeration zone and denitrification zone and is provided with propeller, to promote waste water to flow.
The application is applied to the denitrogenation processing of dyeing waste water, pending waste water is when water inlet pipe enters, shunt, bottom Aeration tank, aeration zone one is entered between a part, another part then enters denitrification zone one bottom denitrification zone one, enter the waste water of aeration zone one through aeration zone one, aeration zone two, aerator three, after road, aeration zone four or four aeration, squeezed in denitrification zone one by the pump of regurgitant orifice, in denitrification zone one together with the waste water entered with water inlet pipe, denitrification two carries out twice anti-nitration reaction successively, question response is complete, when the waste water of denitrification zone exceedes overflow plate, overflow plate is diffused out from overflow plate, and it is expelled at sedimentation tank via outlet pipe, reflux sludge tube is then by the sludge reflux of sedimentation tank to aeration zone one, proceed reaction.
The application is when processing dyeing waste water, waste water constantly circulates in aeration zone and denitrification zone and flows to distribution with snakelike, and denitrification zone forms separate two region with aeration zone, both fully carrying out of denitrification zone anti-nitration reaction had been met, again in equal spatial dimension, extend the waste water time of staying in nitrogen rejection facility, it is effectively improved nitric efficiency, in processed waste water, nitrogen content is obtained 80-90mg/L by water inlet pipe and is reduced to below the 10mg/L of water outlet pipe part, can directly discharge after denitrogenation processing, without causing eutrophication.
Accompanying drawing explanation
Fig. 1 is the structural representation of the application.
Wherein label: A1. aeration zone one；A2. aeration zone one；A3. aeration zone one；A4. aeration zone one；B1. denitrification zone one；B2. denitrification zone one；1. water inlet pipe；2. regurgitant orifice；3. dividing plate；4. overflow plate；5. aeration group；6. propeller；7. reflux sludge tube；8. outlet pipe；9. turn-around wall；91. outer walls；92. mesospores；93. inwalls.
Detailed description of the invention
Embodiment 1
The present embodiment one oxidation ditch nitrogen rejection facility, in conjunction with Fig. 1, including water inlet pipe 1, aeration zone, denitrification zone, reflux sludge tube 7 and outlet pipe 8, aeration zone is distributed in square nitrogen rejection facility with denitrification zone, denitrification zone is positioned at one jiao, on three angles that aeration zone is positioned at outside denitrification zone, and denitrification zone being formed semi-surrounding pattern, aeration zone flows to be followed successively by aeration zone one A according to waste water1, aeration zone two A2, aeration zone three A3With aeration zone four A4, and be distributed with serpentine circuit, denitrification zone includes denitrification zone one B1With denitrification zone two B2, and aeration zone four A4With denitrification zone one B1Between regurgitant orifice 2 is set, pump is set at regurgitant orifice 2 by aeration zone four A4Waste water press-in denitrification zone one B1In；Water inlet pipe 1 is positioned at aeration zone four A4With denitrification zone one B1Between, and its end respectively with aeration zone one A4With denitrification zone one B1Connection, denitrification zone one B1With denitrification zone two B2Between dividing plate 3 is set, and denitrification zone two B2With aeration zone three A3Between overflow plate 4 is set, this overflow plate 4 is near aeration zone two A2One end fix with device inwall, and near aeration zone three A3One end then form a slype；Outlet pipe 8 is positioned at outside overflow plate 4；Reflux sludge tube 7 is arranged at aeration zone one A1With aeration zone four A4The middle part of place end, and reflux sludge tube 7 and water inlet pipe 1 homonymy.Wherein, being provided with arc turn-around wall 9 in aeration zone, turn-around wall 9 is divided into outer wall 91, mesospore 92 and inwall 93, aeration zone one A1With aeration zone two A2Between logical flow passage between outer wall 91 and mesospore 92, A3With aeration zone four A4Between by flow passage between mesospore 92 and inwall 93；Overflow plate 4 is arc for two sides, respectively as aeration zone two A2With aeration zone three A3, denitrification zone one B1With denitrification zone two B2Turn-around wall；Each aeration zone is provided with at least one group of aeration group 5, each aeration zone and denitrification zone are provided with propeller 6, to promote waste water to flow.
The application is applied to the denitrogenation processing of dyeing waste water, and pending waste water, when water inlet pipe 1 enters, shunts, and enters aeration zone one A between a part bottom Aeration tank1, another part is then through denitrification zone one B1Bottom enters denitrification zone one B1, enter aeration zone one A1Waste water through aeration zone one A1, aeration zone two A2, aerator three A3, aeration zone four A4After four road aerations, the pump of regurgitant orifice 2 squeeze into denitrification zone one B1In, at denitrification zone one B together with the waste water entered with water inlet pipe 11, denitrification two B2In carry out twice anti-nitration reaction successively, question response is complete, when the waste water of denitrification zone exceedes overflow plate 4, diffuses out from overflow plate 4, and is expelled at sedimentation tank via outlet pipe 8, and reflux sludge tube 7 is then by the sludge reflux of sedimentation tank to aeration zone one A1In, proceed reaction.
The application is when processing dyeing waste water, waste water constantly circulates in aeration zone and denitrification zone and flows to distribution with snakelike, and denitrification zone forms relatively independent two region with aeration zone, both fully carrying out of denitrification zone anti-nitration reaction had been met, simultaneously, dyeing waste water is additionally increased in pump feeds the fluid of denitrification zone, the addition of this dyeing waste water controls the 1/4-1/5 at denitrification zone total inflow, to guarantee waste water stay time in denitrification zone, can use as denitrifying carbon source, reduce cost, and it is effectively improved nitric efficiency, in processed waste water, nitrogen content is obtained 80-90mg/L by water inlet pipe and is reduced to below the 10mg/L of water outlet pipe part, can directly discharge after denitrogenation processing, without causing eutrophication.
Above content is to combine the further description that provided technical scheme is made by the preferred implementation of this utility model creation; it is embodied as being confined to these explanations above-mentioned it cannot be assumed that this utility model is created; for this utility model creates person of an ordinary skill in the technical field; on the premise of creating design without departing from this utility model; some simple deduction or replace can also be made, all should be considered as belonging to the protection domain that this utility model is created.
Claims (5)
1. an oxidation ditch nitrogen rejection facility, it is characterized in that: include water inlet pipe, aeration zone, denitrification zone, reflux sludge tube and outlet pipe, described aeration zone is distributed in square nitrogen rejection facility with denitrification zone, aeration zone flows to be followed successively by aeration zone one according to waste water, aeration zone two, aeration zone three and aeration zone four, and be distributed with serpentine circuit, denitrification zone includes denitrification zone one and denitrification zone two, and between aeration zone four and denitrification zone one, regurgitant orifice is set, arrange pump at regurgitant orifice to be pressed in denitrification zone one by the waste water of aeration zone four, described water inlet pipe is between aeration zone and denitrification zone, and its end connects with aeration zone one and denitrification zone one respectively, between denitrification zone one and denitrification zone two, dividing plate is set, and between denitrification zone and aeration zone three, overflow plate is set；Described outlet pipe is positioned at outside overflow plate；Described reflux sludge tube is arranged at the middle part of aeration zone one and place, aeration zone four end, and reflux sludge tube and water inlet pipe homonymy.
2. a kind of oxidation ditch nitrogen rejection facility as claimed in claim 1, it is characterized in that: in described aeration zone, be provided with arc turn-around wall, turn-around wall is divided into outer wall, mesospore and inwall, logical flow passage between outer wall and mesospore between aeration zone one and aeration zone two, by the flow passage between mesospore and inwall between aeration zone three and aeration zone four.
3. a kind of oxidation ditch nitrogen rejection facility as claimed in claim 1, it is characterised in that: described overflow plate is that two sides is arc, respectively as aeration zone two and aeration zone three, denitrification zone one and the turn-around wall of denitrification zone two.
4. a kind of oxidation ditch nitrogen rejection facility as claimed in claim 1, it is characterised in that: described aeration zone arranges aeration group.
5. a kind of oxidation ditch nitrogen rejection facility as claimed in claim 1, it is characterised in that: described aeration zone and denitrification zone are provided with propeller, to promote waste water to flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620519448.9U CN205773635U (en) | 2016-05-31 | 2016-05-31 | A kind of oxidation ditch nitrogen rejection facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620519448.9U CN205773635U (en) | 2016-05-31 | 2016-05-31 | A kind of oxidation ditch nitrogen rejection facility |
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| CN205773635U true CN205773635U (en) | 2016-12-07 |
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| CN201620519448.9U Expired - Fee Related CN205773635U (en) | 2016-05-31 | 2016-05-31 | A kind of oxidation ditch nitrogen rejection facility |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108059244A (en) * | 2017-12-26 | 2018-05-22 | 绍兴水处理发展有限公司 | A kind of energy-efficient coupling oxidation ditch denitrification process |
-
2016
- 2016-05-31 CN CN201620519448.9U patent/CN205773635U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108059244A (en) * | 2017-12-26 | 2018-05-22 | 绍兴水处理发展有限公司 | A kind of energy-efficient coupling oxidation ditch denitrification process |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20180531 |
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| CF01 | Termination of patent right due to non-payment of annual fee |