CN215975171U - Limited response aeration water pollution treatment system - Google Patents
Limited response aeration water pollution treatment system Download PDFInfo
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- CN215975171U CN215975171U CN202122328886.0U CN202122328886U CN215975171U CN 215975171 U CN215975171 U CN 215975171U CN 202122328886 U CN202122328886 U CN 202122328886U CN 215975171 U CN215975171 U CN 215975171U
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Abstract
The utility model relates to a limited induction aeration water pollution treatment system, which comprises an anoxic tank and a contact oxidation tank, wherein an overflow pipe is arranged at the upper part of a longitudinal separation plate between the anoxic tank and the contact oxidation tank; the anoxic pond is provided with a water inlet and a stirring device; the contact oxidation tank is internally provided with a filler, a water collecting pipe, an aeration pipe and a sludge discharge pipe, and the contact oxidation tank is provided with a dissolved oxygen sensor and a liquid level sensor; the water collecting pipe is positioned at the middle lower part of the contact oxidation tank, and a first electric valve is arranged at the part of the water collecting pipe extending out of the contact oxidation tank; the part of the aeration pipe extending out of the contact oxidation tank is provided with an aeration fan; the mud pipe is provided with a second electric valve; the bottom of the contact oxidation tank is communicated with the anoxic tank through a return pipe, and a return pump is arranged on the return pipe; the dissolved oxygen sensor, the liquid level sensor, the first electric valve, the aeration fan, the second electric valve and the reflux pump are all electrically connected to the controller; the utility model has the advantages of good purification effect and high integration level.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, and particularly relates to a limited induction aeration water pollution treatment system.
Background
Aeration is an important link in water treatment, aerobic microorganisms in sewage are rapidly propagated by aerating and supplementing oxygen into a contact oxidation pond, the activity of the aerobic microorganisms is increased, a large number of microorganisms are attached to a filler to form a biological film, the biological film decomposes and nitrifies organic substances in the sewage, after the decomposition of the organic substances in the sewage is finished, the treatment of the sewage is close to the end sound, if aeration is continued, the waste of resources is caused, and meanwhile, the formation of zoogloea flocculation and the sedimentation of microbial floccules are influenced; on the other hand, in the current sewage treatment, the effluent of the contact oxidation tank directly enters a secondary sedimentation tank for solid-liquid separation, the nitrate content and the suspended matter content in the effluent are both higher, and the floor area of the secondary sedimentation tank is larger.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a limited induction aeration water pollution treatment system with low energy consumption and short solid-liquid separation time.
The technical scheme of the utility model is as follows:
a limited induction aeration water pollution treatment system comprises an anoxic tank and a contact oxidation tank, wherein an overflow pipe is arranged at the upper part of a longitudinal separation plate between the anoxic tank and the contact oxidation tank;
the anoxic pond is provided with a water inlet and a stirring device;
the contact oxidation tank is internally provided with a filler, a water collecting pipe, an aeration pipe and a sludge discharge pipe, and the contact oxidation tank is provided with a dissolved oxygen sensor and a liquid level sensor;
the water collecting pipe is positioned at the middle lower part of the contact oxidation tank, a first electric valve is arranged at the part of the water collecting pipe extending out of the contact oxidation tank, and the water collecting pipe can discharge water in the contact oxidation tank;
the aerator pipe is positioned at the bottom of the contact oxidation tank, the part of the aerator pipe positioned in the contact oxidation tank is provided with an aerator, and the part of the aerator pipe extending out of the contact oxidation tank is provided with an aeration fan;
the sludge discharge pipe is connected to the bottom of the contact oxidation pond, and a second electric valve is mounted on the sludge discharge pipe;
the bottom of the contact oxidation tank is communicated with the anoxic tank through a return pipe, and a return pump is installed on the return pipe;
the dissolved oxygen sensor, the liquid level sensor, the first electric valve, the aeration fan, the second electric valve and the reflux pump are all electrically connected to the controller.
Further, agitating unit is including installing in the agitator motor at oxygen deficiency pond top and being located the frame stirring frame in the oxygen deficiency pond, frame stirring frame is through pivot and agitator motor's output shaft fixed connection.
Further, the stirring motor is electrically connected to the controller.
Furthermore, a part of the gas collecting pipe, which is positioned in the contact oxidation pond, is provided with a plurality of water collecting branch pipes.
Further, a filler support is arranged in the contact oxidation pond, and the filler is hung on the filler support.
The principle of the scheme is as follows:
the utility model fully and evenly stirs the sewage and sludge entering the anoxic tank through the stirring device and then enters the contact oxidation tank through the overflow pipe, when the liquid level in the contact oxidation tank reaches the design height, the sewage is stopped to be discharged into the anoxic tank, then the aeration fan is started to supplement oxygen into the contact oxidation tank for aeration, in the aeration process, aerobic microorganisms in the sewage are evenly distributed in the contact oxidation tank, meanwhile, a biological film on the filler is used for decomposing organic matters and performing nitration, because the demand of the microorganisms in the contact oxidation tank on the content of dissolved oxygen is reduced along with the gradual consumption of the organic matters, then the aeration quantity in the contact oxidation tank is reduced, the content of the dissolved oxygen in the contact oxidation tank is reduced, at the moment, the microorganisms keep the growth period of deceleration, the activity of the microorganisms is poor in the stage, the repulsion force among the microorganisms is small, the biomass is large, and the flocculation effect of zooglea is good, the sedimentation of the biological floccules is facilitated; the mixed liquid of the sludge and the nitrifying liquid in the contact oxidation tank flows back to the anoxic tank, the returned sludge can supplement microorganisms lost in the anoxic tank, and the return of the nitrifying liquid can convert nitrate and nitrite in the return liquid into nitrogen by utilizing the denitrification effect of denitrifying bacteria in the anoxic tank; after the aeration reaches the set time, stopping the aeration to the contact oxidation tank, settling microbial flocs in the sewage and a biofilm dropped off from the filler in the contact oxidation tank, and simultaneously performing denitrification to a certain degree; the water treated in the contact oxidation pond is discharged through the water collecting pipe, and when the liquid level in the contact oxidation pond reaches a set low liquid level, the water is supplemented into the anoxic pond again.
Compared with the prior art, the utility model has the beneficial effects that:
the aeration amount is reduced after the aeration in the contact oxidation pond is carried out for a period of time by adopting a limited aeration mode, so that the microorganisms are kept in a deceleration growth phase to promote the formation and sedimentation of biological floccules and shorten the time of solid-liquid separation; then the sludge carrying the biological flocs and the nitrifying liquid flows back to the anoxic tank to supplement the microbial content in the anoxic tank, and the nitrifying liquid is supplemented into the anoxic tank to convert nitrate and nitrite in the backflow liquid into nitrogen by utilizing the denitrification effect of denitrifying bacteria in the anoxic tank; therefore, the sewage treatment is accelerated through the mutual synergistic action of the anoxic tank and the contact oxidation tank.
In a word, the utility model has the advantages of low energy consumption and short solid-liquid separation time.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure, A is an anoxic tank, B is a contact oxidation tank, 1 is an overflow pipe, 2 is a water inlet, 3 is a filler, 4 is a water collecting pipe, 5 is an aeration pipe, 6 is a sludge discharge pipe, 7 is a dissolved oxygen sensor, 8 is a first electric valve, 9 is an aerator, 10 is a second electric valve, 11 is a return pipe, 12 is a return pump, 13 is a controller, 14 is a stirring motor, 15 is a frame type stirring frame, 16 is a liquid level sensor, 17 is a filler support.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a limited induction aeration water pollution treatment system comprises an anoxic tank a and a contact oxidation tank B, wherein an overflow pipe 1 is arranged at the upper part of a longitudinal partition plate between the anoxic tank a and the contact oxidation tank B, the overflow pipe 1 is an inverted L-shaped pipe arranged in the contact oxidation tank B, and the overflow pipe 1 is communicated with the partition plate;
the anaerobic tank A is provided with a water inlet 2 and a stirring device, the water inlet 2 can be connected with a sewage supply device (such as a water replenishing pump), and the stirring device stirs the anaerobic tank A to ensure that sludge and sewage are uniformly mixed and then enter the contact oxidation tank B through the overflow pipe 1;
the contact oxidation tank B is internally provided with a filler 3, a water collecting pipe 4, an aerator pipe 5 and a sludge discharge pipe 6, and the contact oxidation tank B is provided with a dissolved oxygen sensor 7 and a liquid level sensor 16;
the water collecting pipe 4 is positioned at the middle lower part of the contact oxidation pond B, a first electric valve 8 is arranged at the part of the water collecting pipe 4 extending out of the contact oxidation pond B, and the water collecting pipe 4 can discharge the water in the contact oxidation pond B;
the aeration pipe 5 is positioned at the bottom of the contact oxidation tank B, the part of the aeration pipe 5 positioned in the contact oxidation tank B is provided with an aerator 9, the part of the aeration pipe 5 extending out of the contact oxidation tank B is provided with an aeration fan, and the aeration fan adopts a variable frequency fan, so that the aeration rate can be adjusted by adjusting the rotating speed of the aeration fan;
the sludge discharge pipe 6 is connected to the bottom of the contact oxidation pond B, and a second electric valve 10 is installed on the sludge discharge pipe 6;
the bottom of the contact oxidation pond B is communicated with the anoxic pond A through a return pipe 11, a return pump 12 is installed on the return pipe 11, and the mixed liquid of sludge and nitrifying liquid at the bottom of the contact oxidation pond B can be returned into the anoxic pond A through the operation of the return pump 12;
the water replenishing pump, the dissolved oxygen sensor 7, the liquid level sensor 16, the first electric valve 8, the aeration fan, the second electric valve 10 and the reflux pump 12 are all electrically connected to a controller 13, the controller 13 can adopt an industrial personal computer, the upper and lower limit thresholds of the content of the dissolved oxygen in the contact oxidation pond B and the upper and lower limit thresholds of the liquid level in the contact oxidation pond B can be set, and the controller 13 can receive the data detected by the dissolved oxygen sensor 7 and the liquid level sensor 16 in real time, and controls the rotating speed of the aeration fan and the start and stop of the water replenishing pump according to the relation between the detected numerical value and the threshold value, and the controller 13 can control the start and stop of the first electric valve 8, the second electric valve 10 and the reflux pump 12, thereby realize mixed liquid backward flow, mud discharge and sewage discharge's control, concrete mixed liquid backward flow, mud discharge and sewage discharge's time can carry out reasonable settlement according to actual conditions.
As shown in fig. 1, the stirring device comprises a stirring motor 14 mounted at the top of the anoxic tank a and a frame-type stirring frame 15 located in the anoxic tank a, wherein the frame-type stirring frame 15 is fixedly connected with an output shaft of the stirring motor 14 through a rotating shaft; the stirring motor 14 is electrically connected to the controller 13, so that the controller 13 controls the operation of the stirring motor 14 to drive the frame-type stirring frame 15 to rotate, thereby stirring the anoxic pond a.
As shown in fig. 1, the part of the gas collecting pipe 4 located in the contact oxidation pond B is provided with a plurality of water collecting branch pipes, so that the water in the contact oxidation pond is discharged through the water collecting pipe 4.
As shown in fig. 1, a filler support 17 is arranged in the contact oxidation pond B, the filler 3 is suspended on the filler support 17, and the filler support 17 can be a stainless steel grid plate fixed at the top end of the contact oxidation pond B.
When the device is used, sewage is supplemented into the anoxic tank A through the water supplementing pump, the stirring motor 14 operates in the process of supplementing the sewage, the frame type stirring frame 15 is driven to rotate to stir the sewage, the sewage enters the contact oxidation tank B through the overflow pipe 1 when the sewage in the anoxic tank A reaches the position of the overflow pipe 1, the controller 13 sends a closing instruction to the water supplementing pump when the liquid level sensor 16 in the contact oxidation tank B detects that the water level reaches a set upper limit threshold value, and then the aeration fan is started to aerate the contact oxidation tank B. And meanwhile, the controller 13 sends an opening instruction to the reflux pump 12, and the reflux pump 12 is opened to reflux the mixed liquid in the contact oxidation pond B to the anoxic pond A so as to carry out denitrification reaction. After the aeration starts for a period of time, the dissolved oxygen sensor 7 detects the dissolved oxygen content in the contact oxidation pond B in real time and feeds the detected dissolved oxygen content back to the controller 13, and the controller 13 controls the rotating speed of the aeration fan according to the detected dissolved oxygen content so as to keep the dissolved oxygen content in the contact oxidation pond B at 2-3mg/L (at the moment, the limited aeration stage is started). After the limited aeration is carried out for a certain time, the controller 13 controls the aeration fan, the stirring motor 14 and the reflux pump 12 to stop running, after the limited aeration is continuously carried out for a certain time, the first electric valve 8 and the second electric valve 10 are respectively opened to discharge water and sludge in the contact oxidation pond B, and then the first electric valve B and the second electric valve 10 are closed; thereby completing the treatment of sewage, and starting the water replenishing pump again to enter the next treatment period.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.
Claims (5)
1. The utility model provides a restricted response aeration water pollution treatment system, includes oxygen deficiency pond and contact oxidation pond, the upper portion of the vertical division board between oxygen deficiency pond and the contact oxidation pond is provided with overflow pipe, its characterized in that:
the anoxic pond is provided with a water inlet and a stirring device;
the contact oxidation tank is internally provided with a filler, a water collecting pipe, an aeration pipe and a sludge discharge pipe, and the contact oxidation tank is provided with a dissolved oxygen sensor and a liquid level sensor;
the water collecting pipe is positioned at the middle lower part of the contact oxidation tank, a first electric valve is arranged at the part of the water collecting pipe extending out of the contact oxidation tank, and the water collecting pipe can discharge the clean water treated in the contact oxidation tank;
the aerator pipe is positioned at the bottom of the contact oxidation tank, the part of the aerator pipe positioned in the contact oxidation tank is provided with an aerator, and the part of the aerator pipe extending out of the contact oxidation tank is provided with an aeration fan;
the sludge discharge pipe is connected to the bottom of the contact oxidation pond, and a second electric valve is mounted on the sludge discharge pipe;
the bottom of the contact oxidation tank is communicated with the anoxic tank through a return pipe, and a return pump is installed on the return pipe;
the dissolved oxygen sensor, the liquid level sensor, the first electric valve, the aeration fan, the second electric valve and the reflux pump are all electrically connected to the controller.
2. The limited induction aerated water pollution treatment system of claim 1, wherein: agitating unit is including installing in the agitator motor at oxygen deficiency pond top and being located the frame stirring frame in the oxygen deficiency pond, frame stirring frame is through pivot and agitator motor's output shaft fixed connection.
3. The limited induction aerated water pollution treatment system of claim 2, wherein: the stirring motor is electrically connected to the controller.
4. The limited induction aerated water pollution treatment system of claim 1, wherein: the part of the water collecting pipe positioned in the contact oxidation pond is provided with a plurality of water collecting branch pipes.
5. The limited induction aerated water pollution treatment system of claim 1, wherein: and a filler support is arranged in the contact oxidation pond, and the filler is suspended on the filler support.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022514406 | 2020-11-02 | ||
| CN2020225144065 | 2020-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215975171U true CN215975171U (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122328886.0U Active CN215975171U (en) | 2020-11-02 | 2021-09-23 | Limited response aeration water pollution treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215975171U (en) |
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2021
- 2021-09-23 CN CN202122328886.0U patent/CN215975171U/en active Active
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