CN211521969U - Sewage treatment system based on oxidation ditch technology - Google Patents
Sewage treatment system based on oxidation ditch technology Download PDFInfo
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- CN211521969U CN211521969U CN202020108092.6U CN202020108092U CN211521969U CN 211521969 U CN211521969 U CN 211521969U CN 202020108092 U CN202020108092 U CN 202020108092U CN 211521969 U CN211521969 U CN 211521969U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model discloses a sewage treatment system based on an oxidation ditch process, which comprises a grid room, a first sedimentation tank, an oxidation ditch, a second sedimentation tank, a contact tank, a sludge pump room, a sludge treatment room and a wastewater disposal basin, wherein the grid room, the first sedimentation tank, the oxidation ditch and the second sedimentation tank are communicated in sequence; the upper part of the second sedimentation tank is communicated with the contact tank, the bottom of the second sedimentation tank is communicated with the sludge pump room, and the sludge pump room, the sludge treatment room and the wastewater tank are sequentially communicated; a first clapboard and a second clapboard are arranged in the wastewater pool, and the wastewater pool is divided into three reaction pools by the first clapboard and the second clapboard; through holes are respectively arranged on the first partition plate and the second partition plate to ensure that the three reaction tanks are communicated in sequence; the reaction tank at the front is communicated with the sludge pump room through a pipeline, and the reaction tank at the back is communicated with the oxidation ditch through a lift pump and a pipeline. The utility model provides high denitrogenation efficiency, the play water reaches national emission standard, and is less to the influence of former technology.
Description
Technical Field
The utility model relates to a sewage treatment technical field, concretely relates to sewage treatment system based on oxidation ditch technology.
Background
The domestic sewage treatment technology of China mainly uses an activated sludge process as a main technology, common sewage treatment technologies comprise an AAO technology, an oxidation ditch technology, an SBR technology, a CASS technology and the like, pollutants are removed mainly through biochemical reaction and flocculation precipitation of microorganisms, the oxidation ditch technology has the advantages of small investment, low operation cost, convenience in management, simple sewage treatment process, strong impact load resistance and the like, and is widely applied to municipal sewage treatment plants in China, and the main process of the oxidation ditch technology comprises grid rooms, a first sedimentation tank, an oxidation ditch, a second sedimentation tank, a contact tank, a sludge pump room, a sludge treatment room, a wastewater pool and the like (an oxidation ditch process flow chart is shown in figure 1). The oxidation ditch process generally adopts a closed ring structure, sewage and activated sludge are discharged out of a system after being circulated for many times in the ditch, and an anoxic-aerobic alternative environment is formed through aeration of surface aeration equipment. And (3) carrying out nitration reaction under aerobic condition, converting nitrogen into nitrate and nitrite, and finally converting nitrate nitrogen into nitrogen through anoxic denitrification reaction to finish the biological denitrification process.
However, in the actual operation process, since there is no independent anoxic region in the oxidation ditch, the nitrification effect is poor and the denitrification efficiency is unstable. Moreover, with the increasing severity of the environmental protection problem, the national effluent discharge standard is more and more strict, and the Total Nitrogen (TN) of the effluent of the existing oxidation ditch process cannot meet the national discharge standard. If an advanced treatment process is added or the original process is modified on the technical route, the engineering investment is large, the construction period is long, and the difficulty of later-stage operation, maintenance and management is increased.
Therefore, there is a need for an improvement of the existing sewage treatment system to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The aforesaid to prior art exists not enoughly, the utility model discloses an among the current sewage treatment system of solution, there is not independent oxygen deficiency region, lead to the digestion effect poor, go out that the unsatisfied emission standard of water total nitrogen and reform transform complicated problem with high costs, provide a sewage treatment system based on oxidation ditch technology, improved denitrogenation efficiency, make play water reach national emission standard, and less to the influence of former technology, be convenient for reform transform.
In order to solve the technical problem, the utility model discloses a technical scheme is like this:
a sewage treatment system based on an oxidation ditch process comprises a grid room, a first sedimentation tank, an oxidation ditch, a second sedimentation tank, a contact tank, a sludge pump room, a sludge treatment room and a wastewater tank, wherein the grid room, the first sedimentation tank, the oxidation ditch and the second sedimentation tank are communicated in sequence; the upper part of the second sedimentation tank is communicated with the contact tank, the bottom of the second sedimentation tank is communicated with a sludge pump room, the sludge treatment room and the wastewater tank are sequentially communicated, and meanwhile, the sludge pump room is also connected with the oxidation ditch so as to pump sludge into the oxidation ditch; a first partition plate and a second partition plate are arranged in the wastewater tank, and the wastewater tank is divided into a first reaction tank, a second reaction tank and a third reaction tank by the first partition plate and the second partition plate; the first reaction tank, the second reaction tank and the third reaction tank are sequentially communicated, the first reaction tank is communicated with the sludge pump room through a pipeline, and the third reaction tank is communicated with the oxidation ditch through a lifting pump and a pipeline.
The existing wastewater pond is improved, the wastewater pond is divided into three independent reaction ponds by adopting a first partition plate and a second partition plate, the three reaction ponds are sequentially communicated, the first reaction pond is communicated with a sludge pump room through a pipeline, and the third reaction pond is communicated with an oxidation ditch through a lifting pump and a pipeline; like this, during the mud of sludge pump room passes through the three reaction tank in the pipeline gets into the waste water pond, because three reaction tank is the oxygen deficiency environment, can utilize the microorganism to carry out endogenous denitrification reaction in three reaction tank to realize the denitrification denitrogenation, not only reduced sludge concentration, more realized the denitrogenation and reduced TN (total nitrogen) in the play water, make the play water reach national emission standard, and need not additionally to provide the carbon source at the denitrification in-process. The denitrified sludge is lifted to the oxidation ditch through a lifting pump and a pipeline, the sludge concentration required by an oxidation ditch system is supplemented, the influence on the original process is small, the change of the original process by adopting the sewage treatment system is small, the construction period is short, the engineering quantity is small, the engineering investment is low, and the sewage treatment system is worthy of popularization.
Furthermore, stirrers are respectively arranged in the first reaction tank, the second reaction tank and the third reaction tank, so that sludge and denitrifying bacteria are uniformly mixed, the denitrifying reaction is facilitated, and the nitrogen is removed better.
Further, the first partition plate and the second partition plate are distributed in a T shape and divide the wastewater tank into three reaction tanks with a large size and a small size, the first reaction tank and the second reaction tank are small reaction tanks, and the third reaction tank is a large reaction tank, so that the sludge flows into the third reaction tank after passing through the second reaction tank from the first reaction tank in the upper space, the denitrification reaction time is longer and the denitrification reaction is more thorough because the distance of the sludge is longer.
Furthermore, through holes are respectively formed in the first partition plate and the second partition plate, so that the first reaction tank, the second reaction tank and the third reaction tank are communicated in sequence, and the sludge is subjected to denitrification reaction more thoroughly.
Furthermore, the oxidation ditch comprises an aerobic tank and an anaerobic tank, and the third reaction tank is respectively communicated with the aerobic tank and the anaerobic tank through a lifting pump and a pipeline, so that sludge subjected to denitrification reaction is supplemented into the aerobic tank and the anaerobic tank for reaction, the total nitrogen in the effluent is further reduced, the original process is not changed, and the influence on the original process is reduced.
Furthermore, the lift pump is two, is linked together through pipeline respectively with good oxygen pond and anaerobism pond, like this, can be timely convenient will through the mud after the denitrification denitrogenation send into good oxygen pond and anaerobism pond and react reasonable in design.
Furthermore, the sludge treatment room is communicated with the first reaction tank through a pipeline, so that sewage separated from the sludge treatment room is discharged into the first reaction tank to react, and the discharge of a sewage treatment system is reduced.
Compared with the prior art, the utility model has the advantages of as follows:
1. through reforming transform current wastewater disposal basin, adopt first baffle and second baffle to separate into three independent reaction tank with the wastewater disposal basin, and three reaction tank communicates in order, and first reaction tank passes through the pipeline and communicates with the mud pump house, and the third reaction tank is linked together through elevator pump and pipeline and oxidation ditch. Like this, during the mud of sludge pump room passes through the three reaction tank in the pipeline gets into the waste water pond, because three reaction tank is the oxygen deficiency environment, can utilize the microorganism to carry out endogenous denitrification reaction in three reaction tank to realize the denitrification denitrogenation, not only reduced sludge concentration, more realized the denitrogenation and reduced TN (total nitrogen) in the play water, make the play water reach national emission standard, and need not additionally to provide the carbon source at the denitrification in-process.
2. The denitrified sludge is lifted to the oxidation ditch through a lifting pump and a pipeline, the sludge concentration required by an oxidation ditch system is supplemented, the influence on the original process is small, the change of the original process by adopting the sewage treatment system is small, the construction period is short, the engineering quantity is small, the engineering investment is low, and the sewage treatment system is worthy of popularization.
Drawings
FIG. 1 is a flow chart of a conventional oxidation trench process.
FIG. 2 is a schematic diagram of a sewage treatment system based on an oxidation ditch process.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example (b):
referring to fig. 2, the sewage treatment system based on the oxidation ditch process comprises a grid room, a first sedimentation tank, an oxidation ditch, a second sedimentation tank, a contact tank, a sludge pump room, a sludge treatment room and a wastewater tank, wherein the grid room, the first sedimentation tank, the oxidation ditch and the second sedimentation tank are communicated in sequence. The upper part of the second sedimentation tank is communicated with the contact tank, the bottom of the second sedimentation tank is communicated with the sludge pump room, the sludge treatment room and the wastewater disposal basin are communicated in sequence, and meanwhile, the sludge pump room is also connected with the oxidation ditch so as to pump sludge into the oxidation ditch. A first partition plate and a second partition plate are arranged in the wastewater tank, and the wastewater tank is divided into a first reaction tank, a second reaction tank and a third reaction tank by the first partition plate and the second partition plate. In specific implementation, the first partition plate and the second partition plate are distributed in a T shape to divide the wastewater tank into three reaction tanks with two large reaction tanks and two small reaction tanks. The first reaction tank and the second reaction tank are small reaction tanks, and the third reaction tank is a large reaction tank, so that the sludge flows into the third reaction tank after passing through the second reaction tank from the first reaction tank in the upper space. The stirrers are respectively arranged in the first reaction tank, the second reaction tank and the third reaction tank, so that sludge and denitrifying bacteria are uniformly mixed, the denitrifying reaction is facilitated, and the nitrogen is removed better. Through holes are respectively formed in the first partition plate and the second partition plate, so that the first reaction tank, the second reaction tank and the third reaction tank are communicated in sequence, and the denitrification reaction of sludge is more thorough. The first reaction tank is communicated with the sludge pump room through a pipeline, and the third reaction tank is communicated with the oxidation ditch through a lifting pump and a pipeline. When the device is implemented, the oxidation ditch comprises an aerobic tank and an anaerobic tank, and the third reaction tank is respectively communicated with the aerobic tank and the anaerobic tank through a lifting pump and a pipeline. Preferably, two lifting pumps are arranged and are respectively communicated with the aerobic tank and the anaerobic tank through pipelines, so that the sludge subjected to denitrification reaction is supplemented into the aerobic tank and the anaerobic tank for reaction, the total nitrogen in the discharged water is further reduced, the original process is not changed, and the influence on the original process is reduced. The sludge treatment room is communicated with the first reaction tank through a pipeline, so that sewage separated from the sludge treatment room is discharged into the first reaction tank to react, and the discharge of a sewage treatment system is reduced.
The existing wastewater pond is improved, the wastewater pond is divided into three independent reaction ponds by adopting a first partition plate and a second partition plate, the three reaction ponds are sequentially communicated, the first reaction pond is communicated with a sludge pump room through a pipeline, and the third reaction pond is communicated with an oxidation ditch through a lifting pump and a pipeline; like this, during the mud of sludge pump room passes through the three reaction tank in the pipeline gets into the waste water pond, because three reaction tank is the oxygen deficiency environment, can utilize the microorganism to carry out endogenous denitrification reaction in three reaction tank to realize the denitrification denitrogenation, not only reduced sludge concentration, more realized the denitrogenation and reduced TN (total nitrogen) in the play water, make the play water reach national emission standard, and need not additionally to provide the carbon source at the denitrification in-process. The denitrified sludge is lifted to the oxidation ditch through a lifting pump and a pipeline, the sludge concentration required by an oxidation ditch system is supplemented, the influence on the original process is small, the change of the original process by adopting the sewage treatment system is small, the construction period is short, the engineering quantity is small, the engineering investment is low, and the sewage treatment system is worthy of popularization.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that those modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all should be covered in the scope of the claims of the present invention.
Claims (7)
1. A sewage treatment system based on an oxidation ditch process comprises a grid room, a first sedimentation tank, an oxidation ditch, a second sedimentation tank, a contact tank, a sludge pump room, a sludge treatment room and a wastewater tank, wherein the grid room, the first sedimentation tank, the oxidation ditch and the second sedimentation tank are communicated in sequence; the upper part of the second sedimentation tank is communicated with the contact tank, the bottom of the second sedimentation tank is communicated with a sludge pump room, the sludge treatment room and the wastewater tank are sequentially communicated, and meanwhile, the sludge pump room is also connected with the oxidation ditch so as to pump sludge into the oxidation ditch; the device is characterized in that a first clapboard and a second clapboard are arranged in the wastewater pool, and the wastewater pool is divided into a first reaction pool, a second reaction pool and a third reaction pool by the first clapboard and the second clapboard; the first reaction tank, the second reaction tank and the third reaction tank are sequentially communicated, the first reaction tank is communicated with the sludge pump room through a pipeline, and the third reaction tank is communicated with the oxidation ditch through a lifting pump and a pipeline.
2. The sewage treatment system based on the oxidation ditch process, according to claim 1, wherein stirrers are respectively arranged in the first reaction tank, the second reaction tank and the third reaction tank.
3. The sewage treatment system based on the oxidation ditch process, as recited in claim 1, wherein the first partition and the second partition are distributed in a T shape and divide the wastewater tank into three reaction tanks with two large reaction tanks and two small reaction tanks, the first reaction tank and the second reaction tank are small reaction tanks, and the third reaction tank is a large reaction tank.
4. The sewage treatment system based on the oxidation ditch process, as recited in claim 1, wherein the first partition plate and the second partition plate are respectively provided with through holes, so that the first reaction tank, the second reaction tank and the third reaction tank are communicated in sequence.
5. The sewage treatment system based on the oxidation ditch process of any one of claims 1 to 4, wherein the oxidation ditch comprises an aerobic tank and an anaerobic tank, and the third reaction tank is respectively communicated with the aerobic tank and the anaerobic tank through a lift pump and a pipeline.
6. The sewage treatment system based on the oxidation ditch process, as recited in claim 5, wherein the number of the lift pumps is two, and the two lift pumps are respectively communicated with the aerobic tank and the anaerobic tank through pipelines.
7. The sewage treatment system based on the oxidation ditch process, according to claim 1, wherein the sludge treatment room is communicated with the first reaction tank through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020108092.6U CN211521969U (en) | 2020-01-17 | 2020-01-17 | Sewage treatment system based on oxidation ditch technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020108092.6U CN211521969U (en) | 2020-01-17 | 2020-01-17 | Sewage treatment system based on oxidation ditch technology |
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| CN211521969U true CN211521969U (en) | 2020-09-18 |
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| CN202020108092.6U Expired - Fee Related CN211521969U (en) | 2020-01-17 | 2020-01-17 | Sewage treatment system based on oxidation ditch technology |
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| CN (1) | CN211521969U (en) |
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- 2020-01-17 CN CN202020108092.6U patent/CN211521969U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200918 Termination date: 20220117 |
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| CF01 | Termination of patent right due to non-payment of annual fee |