CN210261442U - Gas stripping vertical type village and town sewage treatment device - Google Patents
Gas stripping vertical type village and town sewage treatment device Download PDFInfo
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- CN210261442U CN210261442U CN201920413854.0U CN201920413854U CN210261442U CN 210261442 U CN210261442 U CN 210261442U CN 201920413854 U CN201920413854 U CN 201920413854U CN 210261442 U CN210261442 U CN 210261442U
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Abstract
The utility model discloses a vertical villages and small towns sewage treatment plant of air stripping, it includes vertical sewage treatment plant, gas-water separation device, mud-water separation sedimentation tank and provides aerodynamic's screw air-blower. The vertical sewage treatment device, the gas-water separation device and the sedimentation tank are communicated through a pipeline, a rotational flow water distributor is arranged at a water inlet of the vertical sewage treatment device, and an exhaust pipe is arranged on the gas-water separation device and is communicated with the atmosphere. An air pipe of the screw type blower is introduced into the vertical sewage treatment device and is divided into two parts, wherein the upper part is an oxygen consumption nitrification O section, and the lower part is a denitrification A section. The utility model discloses change the AO technology of conventional level arrangement into vertical, improve oxygen utilization ratio and treatment effeciency, saved area greatly, be particularly suitable for middle and small-scale villages and small towns sewage treatment plant (station). Meanwhile, the air-lift power device is used for replacing a traditional water pump, so that kinetic energy is greatly saved.
Description
Technical Field
The invention relates to a sewage treatment facility, in particular to a vertical sewage treatment device which is suitable for small and medium-sized village sewage treatment plants (stations).
Background
At present, the treatment of sewage in villages and towns becomes an important part of the construction of beautiful villages, and the technology in the field of sewage treatment is gradually applied to the treatment of sewage in small and medium-scale villages and towns. However, the treatment station has two problems, namely small water treatment amount, high emission standard, long process and high treatment cost; and secondly, the treatment stations are dispersed, the equipment and the technology are complex, the operation and maintenance capacity is weak, and the management cost is high.
The invention aims to solve the problems and provides a village and town sewage treatment process and a device which have the advantages of simple technology, low energy consumption, small occupied area, simple operation and maintenance management and operation and can be discharged and recycled after reaching standards.
Disclosure of Invention
The invention provides a novel vertical sewage treatment device for village and town sewage treatment, and aims to reduce energy consumption, floor area and management complexity of village and town sewage treatment facilities and realize a construction mode of efficient treatment and convenient management.
A gas stripping vertical sewage treatment device comprises a vertical sewage treatment device 1, a gas-water separation device 2, a mud-water separation sedimentation tank 3 and a screw type blower 4 for providing air power; the water inlet of the vertical sewage treatment device 1 is communicated with a sewage inlet pipe 101 at the bottom, the outlet at the top is communicated with a water outlet pipe 201, the tail end of the sewage inlet pipe 101 is provided with a cyclone water distributor 102, the top of the gas-water separation device 2 is provided with an exhaust pipe 202, and a sedimentation tank inlet pipe 301 is connected with the water outlet of the gas-water separation device 2.
Wherein, the tail end of the air pipe 401 is provided with a microporous aerator 402, the tail end of the air pipe 401 is provided with the microporous aerator 402, the microporous aerator 402 divides the vertical sewage treatment device 1 into an upper part and a lower part, the upper part is an aerobic O section, and the lower part is an anoxic A section.
Wherein the length ratio of the aerobic section O to the anoxic section A is 3: 1.
more, the sedimentation tank 3 still be equipped with return sludge pipe 303, sewage gets into vertical sewage treatment plant 1 through inlet tube 101 together with sedimentation tank return sludge pipe 303.
The gas-water separation device 2 is arranged on the ground, the volume of the gas-water separation device is 1/3-1/2 of the vertical sewage treatment device 1, the mud-water separation sedimentation tank 3 can be a vertical sedimentation tank or a radial sedimentation tank, and the designed surface load is 1-1.5m3/m2.d。
The invention has the remarkable characteristics that:
1) aerodynamic force replaces water pump power: the rising power of the return sludge and the mixed liquor in the sedimentation tank comes from the air stripping action, the return flow depends on the ventilation quantity, the air power simultaneously ensures the oxygen demand of the activated sludge and also protects the integrity of the activated sludge (the power of a water pump has the crushing action on the activated sludge);
2) vertical replacement of planar arrangement: the traditional AO process has large floor area, low oxygen utilization rate and low sewage treatment efficiency. The water depth of the vertical device is increased to 9-12 m from 4-5 m of planar arrangement, the oxygen utilization rate is doubled, the treatment efficiency is improved, and the occupied area is greatly reduced; meanwhile, for medium and small treatment scale, the diameter of the vertical device is only 1-3 m, and the vertical device can be realized by an open caisson construction method;
3) the key parts of the vertical sewage treatment device comprise a conical mixed liquid flow rising device at the top, a microporous aerator at the middle part and a rotational flow water distributor at the bottom. The uniqueness of the device ensures that the mixed liquid flows in a high-speed and rotating mode, is a necessary condition for forming aerobic granular sludge, and becomes an important guarantee for realizing high-efficiency denitrification, dephosphorization and decarburization of the device and realizing up-to-standard discharge and recycling.
Drawings
FIG. 1 is a drawing of a concrete structure device of the present invention
Wherein, 1 is a vertical sewage treatment device, 101 is a sewage inlet pipe, A is an upper aerobic O section, a lower anoxic A section, an upper aerobic O section and 103 is a water outlet; 2, a gas-water separation device, 201 is a water inlet, and 202 is an odor outlet; 3 is a reverse water separation sedimentation tank, 301 is a water inlet, 302 is a purified water outlet, 303 is a sludge return port, and 304 is a sludge discharge port; 4 is screw type blower, 401 is ventilation pipe, 402 is micropore aerator.
Detailed Description
Taking village and town sewage treatment as an example, the raw water quality is as follows: SS400mg/l, COD450mg/l, ammonia nitrogen 40mg/l, total nitrogen 50mg/l, total phosphorus 4 mg/l. Raw water enters the vertical sewage treatment device through the pump after intercepting dirt by the grille, and the flow is 50m3And d. The vertical sewage treatment device is started by inoculating activated sludge of a sewage plant and starting the screw type blower with the air volume of 60m3D, wind pressure 12.5mH2O, the amount of return sludge is 100m3And d. Under the action of air stripping, raw sewage, returned sludge and inoculated sludge pass through the anoxic section, the aerobic section and the conical mixed liquid flow rising device to enter a gas-water separator to realize gas-liquid separation, and then enter a sedimentation tank to separate sludge from water to obtain water. Under the working condition, the operation lasts for about 20 days, and the sludge in the vertical sewage treatment device is found to be granular, light yellow in color, irregular in shape, about 0.9-1.8mm in particle size and more than 88% in granulation rate.
The detection goes out water quality, benefits from unique vertical sewage treatment plant, and the reactor has good treatment effect to the pollutant: the removal rates of indexes such as COD, ammonia nitrogen, total phosphorus and the like reach 87%, 78-97%, 75-93% and 58-95% respectively, so that pollutant removal and synchronous nitrogen and phosphorus removal are realized in the single-stage bioreactor, and effluent reaches the first-level A standard. The whole vertical processing device and the process occupy less than 6m of land2. Meanwhile, energy consumption equipment only comprises a water inlet pump and an air blower, kinetic energy consumption is reduced, and a phosphorus removal agent is added at a sedimentation tank only when total phosphorus exceeds the standard, so that the total phosphorus is guaranteed to reach the standard and be discharged, and the agent cost is also greatly reduced. Estimate the total operating cost of 0.7 yuan/m3。
Claims (5)
1. The air stripping vertical type village and town sewage treatment device is characterized by comprising a vertical sewage treatment device (1), an air-water separation device (2), a mud-water separation sedimentation tank (3) and a screw type blower (4) for providing air power; the water inlet of the vertical sewage treatment device (1) is communicated with a sewage inlet pipe (101) at the bottom, the outlet at the top is communicated with a water outlet pipe (201), the tail end of the sewage inlet pipe (101) is provided with a cyclone water distributor (102), the top of the gas-water separation device (2) is provided with an exhaust pipe (202), and a water inlet pipe (301) of a sedimentation tank is connected with the water outlet of the gas-water separation device (2).
2. The device according to claim 1, characterized in that the end of the air pipe (401) of the screw-type blower (4) is provided with a microporous aerator (402), the end of the air pipe (401) is provided with the microporous aerator (402), and the microporous aerator (402) divides the vertical sewage treatment device (1) into an upper part and a lower part, wherein the upper part is an aerobic O section, and the lower part is an anoxic A section.
3. The apparatus of claim 2, wherein the length ratio of the aerobic O zone to the anoxic a zone is 3: 1.
4. the device according to claim 1, characterized in that the sedimentation tank (3) is further provided with a return sludge pipe (303), and sewage enters the vertical sewage treatment device (1) together with the return sludge pipe (303) of the sedimentation tank through the water inlet pipe (101).
5. The device according to claim 1, wherein the gas-water separation device (2) is arranged on the ground, has the capacity of 1/3-1/2 of the vertical sewage treatment device (1), and the sludge-water separation and sedimentation tank (3) can be a vertical sedimentation tank or a radial sedimentation tank, and is designed to have the surface load of 1-1.5m3/m2.d。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920413854.0U CN210261442U (en) | 2019-03-29 | 2019-03-29 | Gas stripping vertical type village and town sewage treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920413854.0U CN210261442U (en) | 2019-03-29 | 2019-03-29 | Gas stripping vertical type village and town sewage treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210261442U true CN210261442U (en) | 2020-04-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920413854.0U Expired - Fee Related CN210261442U (en) | 2019-03-29 | 2019-03-29 | Gas stripping vertical type village and town sewage treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210261442U (en) |
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2019
- 2019-03-29 CN CN201920413854.0U patent/CN210261442U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200407 Termination date: 20210329 |