CN210855718U - Novel rural sewage treatment system - Google Patents
Novel rural sewage treatment system Download PDFInfo
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- CN210855718U CN210855718U CN201921720647.6U CN201921720647U CN210855718U CN 210855718 U CN210855718 U CN 210855718U CN 201921720647 U CN201921720647 U CN 201921720647U CN 210855718 U CN210855718 U CN 210855718U
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Abstract
The utility model discloses a novel rural sewage treatment system, which is provided with a hydrolysis acidification adjusting tank, balances the water quality and water quantity, removes macromolecular organic matters and ensures the stable operation of structures and treatment equipment; the rear anoxic tank is arranged, so that a sludge backflow route is changed, the sludge backflow amount is increased, and a carbon source of the anaerobic tank is increased, so that the influence of nitrate on the anaerobic environment of the anaerobic tank is reduced; the separated corridor type aerobic pool is adopted, so that aeration is more sufficient, and energy consumption is reduced; the split MBR membrane tank has the advantages that the membrane group is not easy to block, the split MBR membrane tank is suitable for aerobic and anaerobic environments, and can replace a secondary sedimentation tank sedimentation unit so as to reduce facility construction. The artificial wetland and the UV disinfection tank can be adopted to obtain higher-quality effluent quality, and the four discharge standards of surface water are met. The system has the advantages of reasonable design, high utilization rate, impact resistance, good treatment effect, convenient operation and maintenance, ensures the treatment quality of sewage, and is suitable for being popularized in the field of sewage treatment.
Description
Technical Field
The utility model relates to a sewage treatment field specifically is a novel rural sewage treatment system.
Background
The amount of rural domestic sewage is small, except for some small towns, the amount of the domestic sewage generated by relatively small water amount due to dispersed general rural population living is small; the rural domestic sewage has large change coefficient, most people have similar life laws, and the rural domestic sewage discharge amount is larger in the morning and at night than in the daytime, the water discharge amount at night is small, and the water amount change is obvious. The treatment difficulty is high. Generally, the traditional sewage treatment method can not reach the discharge standard, for example, a simple physical method is adopted, an artificial grating or natural precipitation is adopted, only most of floating matters and large granular substances which are difficult to dissolve in water can be taken out, the discharge standard reaching the standard is far away, secondary treatment is required, and A is adopted in the conventional secondary treatment2The biochemical treatment method can achieve better effect.
An MBR (membrane bioreactor) is a wastewater treatment process produced by organically combining a membrane technology and a sewage biological treatment technology, is an important means for recycling sewage, and basically solves the problem of poor effluent quality caused by factors such as sludge expansion and low sludge concentration in the traditional activated sludge process.
Therefore, the current secondary treatment is generally adopted as A2The O + MBR integrated device is still not particularly ideal in the aspects of nitrogen and phosphorus removal, and a large amount of nitrate generated in the anaerobic tank has certain influence on the anaerobic environment of the anaerobic tank, so that the removal rate of nitrogen and phosphorus is influenced.
In order to ensure better effluent quality, the traditional three-stage treatment adopts a rapid filtration irrigation or ozone catalysis facility, but the facility increases the operation capital construction cost and is difficult to maintain and manage.
With the increase of the intensity of national environmental comprehensive treatment, the sewage discharge standard is gradually improved, the water inlet requirement of a river and lake storage system cannot be met by referring to the first-class A discharge standard in the national standard (GB18918-2002) at present, and the sewage discharge standard of partial regions is improved to more than four types of surface water environmental quality standards (GB 3838-2002). To sum up, in order to achieve a better effect of rural domestic sewage treatment, improve sewage treatment quality, realize reuse of reclaimed water, save water resources, reduce capital construction cost, facilitate maintenance and management, a novel rural sewage treatment system needs to be changed urgently to meet higher-standard discharge requirements.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel rural sewage treatment system to solve the improvement sewage treatment quality that proposes in the above-mentioned background art, reduce the technical problem of capital construction cost.
In order to achieve the above object, the utility model provides a following technical scheme: a novel rural sewage treatment system comprises: artifical grid (1), hydrolysis acidification equalizing basin (2), anaerobism pond (3), oxygen deficiency pond (4), good oxygen pond (5), rearmounted oxygen deficiency pond (6) MBR membrane cisterna (7), wherein: the artificial grid (1) is used for removing larger floating objects and suspended matters, and primary particles are larger than insoluble particles in gaps among the grids; the hydrolysis acidification adjusting tank (2) can balance the water quality and the water quantity and simultaneously remove macromolecular organic matters, plays a role in hydrolysis acidification, ensures the stable operation of subsequent treatment structures or treatment equipment, and is internally provided with an adjusting tank lift pump (10) for conveying sewage into the anaerobic tank (3) through a water pipeline; an anaerobic tank stirrer (11) is arranged in the anaerobic tank (3) to mix the sewage and the sludge so as to prevent the sludge from settling.
The anoxic tank (4) takes carbon-containing organic matters which are not decomposed in the sewage as a carbon source, nitrate radicals which flow back from the aerobic tank (5) through the internal reflux pipeline (16) are reduced for denitrification, and meanwhile, part of COD is removed. An aeration pump (13) is arranged at the upper part of the aerobic tank (5) and is connected with a main pump pipeline, a first pipeline and a second pipeline which are branched from the main pump pipeline extend into the aerobic tank (5) and the MBR membrane tank (7) to mainly carry out aeration reaction, and COD (chemical oxygen demand) is further removed, nitrification and phosphorus absorption are further carried out; rearmounted oxygen deficiency pond (6) bottom is equipped with first mud return line (17) and anaerobism pond (3) intercommunication, and the bottom still is equipped with second mud return line (19) and MBR membrane cisterna (7) bottom and excess sludge discharge pipeline (18) intercommunication, has changed the mud return circuit, increases the mud backward flow volume, improves biochemical nature, and more importantly increases the anaerobism pond carbon source to reduce the influence of nitrate to anaerobism pond anaerobic environment. The MBR membrane tank (7) is internally provided with an MBR membrane 701 which is connected with a suction pump (14) through a suction pipeline, so that microorganisms are completely intercepted in the bioreactor, higher microorganism concentration can be maintained in the system, the integral pollutant removal efficiency of the reaction device is improved, good effluent quality is ensured, and meanwhile, the reactor has good adaptability to various changes of water inflow load (water quality and water quantity), is impact-resistant, and can stably obtain high-quality effluent quality. The upper part of the MBR membrane tank (7) is provided with a dosing device, ferric salt is added to further remove phosphorus, phosphate is enriched in the supernatant of the anaerobic section, the purpose of removing phosphorus is achieved by removing the phosphorus-rich supernatant, the negative influence of sludge age on the nitrification effect is effectively overcome, and the phosphorus-rich supernatant can be treated by a chemical method to achieve the recovery of phosphorus.
Further, the system further comprises: an artificial wetland (8) and a UV disinfection tank (9). Wherein the collection pipeline (801) is communicated with the right side of the MBR membrane tank (7) to remove refractory organic matters; the UV disinfection tank (9) is communicated with the artificial wetland (8) through a disinfection pipeline 901, and is used for disinfecting the effluent by ultraviolet rays and then discharging the effluent through a discharge pipeline.
Furthermore, the aerobic tank (5) adopts a separated gallery type aerobic tank, so that the aeration is more sufficient, and certain energy consumption is reduced.
Furthermore, the MBR membrane tank (7) adopts a split type MBR membrane tank, and is not only suitable for aerobic treatment, but also suitable for anaerobic treatment.
Furthermore, the water delivery pipeline (101), the main pump pipeline (121), the second pipeline (123) and the suction pipeline (141) are provided with control valves (15) for controlling the water quantity.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the system is provided with a hydrolytic acidification regulating tank, macromolecular organic matters can be removed while water quality and water quantity are balanced, the hydrolytic acidification effect is achieved, and stable operation of subsequent treatment structures or treatment equipment is guaranteed.
2. The system is provided with a post-positioned anoxic tank, changes the traditional internal reflux mode and a sludge reflux route, increases the sludge reflux amount and improves the biochemical property; and a carbon source of the anaerobic tank is increased to reduce the influence of nitrate on the anaerobic environment of the anaerobic tank, so that a better treatment effect is achieved, the economic benefit is good, and the operation and management are convenient.
3. The system is provided with the separated corridor type aerobic pool, and because the aerobic pool is large in size, the dissolved oxygen content is increased by adopting the separated corridor type aerobic pool, so that the aeration is more sufficient, and certain energy consumption is reduced.
4. The system is provided with a split type MBR membrane tank, the membrane group is not easy to block, the operation and management are convenient, the system is suitable for aerobic and anaerobic environments, and a secondary sedimentation tank sedimentation unit can be replaced, so that the facility construction is reduced, and the investment is saved.
5. The system is provided with an artificial wetland for removing refractory organic matters; and the UV disinfection tank carries out ultraviolet disinfection on the effluent to obtain high-quality effluent quality, and the effluent quality meets the four discharge standards of surface water.
6. The system has the advantages of reasonable design, high utilization rate, impact resistance, good treatment effect, convenient operation and maintenance, ensures the treatment quality of sewage, and is suitable for being popularized in the field of sewage treatment.
Drawings
FIG. 1 is a schematic view of a rural sewage treatment system of the utility model;
an artificial grating-1, a hydrolytic acidification regulating tank-2, an anaerobic tank-3, an anoxic tank-4, an aerobic tank-5, a post-anoxic tank-6, an MBR membrane tank-7, an artificial wetland-8, an UV ultraviolet disinfection tank-9, a regulating tank lift pump-10, an anaerobic tank stirrer-11, an aeration pump-12, a dosing device-13, a suction pump-14, a control valve-15, an internal reflux pipeline-16, a sludge reflux pipeline-17, a residual sludge discharge pipeline-18, an MBR membrane tank pipeline-19, an MBR membrane-701, a collection pipeline-801, a disinfection pipeline-901, a water pipeline-101, a main pump pipeline-121, a first pipeline-122, a second pipeline-123, an aerobic tank aeration device-124, an MBR membrane tank aeration device-125, a water tank-6, an MBR membrane tank-6, A medicine feeding pipeline-131, a suction pipeline-141 and a second sludge return pipeline-191.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a novel rural sewage treatment system comprises: the device comprises an artificial grating 1, a hydrolysis acidification adjusting tank 2, an anaerobic tank 3, an anoxic tank 4, an aerobic tank 5, a post-anoxic tank 6 and an MBR membrane tank 7. The right side of the artificial grid 1 is provided with a hydrolysis acidification adjusting tank 2, an adjusting tank lifting pump 10 is arranged in the hydrolysis acidification adjusting tank 2, the adjusting tank lifting pump 10 is communicated into the anaerobic tank 3 through a water delivery pipeline 101, an anaerobic tank stirrer 11 is arranged in the anaerobic tank 3, the right side is provided with an anoxic tank 4, and the right side of the anoxic tank is provided with an aerobic tank 5. The bottom of the aerobic tank 5 is provided with an internal reflux pipeline 16 communicated with the anoxic tank 4, the upper part of the aerobic tank is provided with an aeration pump 12 connected with a main pump pipeline 121, the main pump pipeline 121 branches into a first pipeline 122 and a second pipeline 123 which extend into the aerobic tank 5 and the MBR membrane tank 7 and are respectively connected with an aerobic tank aeration device 124 and an MBR membrane tank aeration device 125, and the right side of the main pump pipeline is provided with a rear anoxic tank 6. 6 bottoms in rearmounted oxygen deficiency pond are equipped with first mud return line 17 and anaerobism pond 3 intercommunications, and the bottom still is equipped with second mud return line 191 and passes through MBR membrane cisterna pipeline 19 and MBR membrane cisterna 7 intercommunication, and the right side is equipped with MBR membrane cisterna 7, is equipped with MBR membrane 701 in it and is connected through suction pipeline 141 with suction pump 14, and upper portion is equipped with charge device 13 and stretches into in through adding medicine pipeline 131, and the bottom is equipped with MBR membrane cisterna pipeline 19 and branches second mud return line 191 and surplus sludge discharge pipeline 18.
Further, the system further comprises: an artificial wetland 8 and a UV disinfection tank 9. The left side of the artificial wetland 8 is provided with a collecting pipeline 801 which is communicated with the right side of the MBR membrane tank 7. The left side of the UV ultraviolet disinfection tank 9 is provided with a disinfection pipeline 901 which is communicated with the artificial wetland 8, and the right side is provided with a discharge pipeline.
Furthermore, the aerobic tank 5 adopts a separated gallery type aerobic tank.
Further, the MBR membrane tank 7 adopts a split type MBR membrane tank.
Further, the water delivery pipeline 101, the main pump pipeline 121, the second pipeline 123 and the suction pipeline (141) are provided with control valves 15.
The sewage treatment process comprises the following steps:
firstly, sewage is collected by a pipe network and enters an artificial grating 1, larger floating objects, suspended matters and insoluble particles with primary particles larger than gaps of the grating are removed, then the sewage enters a hydrolytic acidification regulating tank 2 by utilizing a gravity-flow mode, macromolecular organic matters can be removed while water quality and water quantity are balanced, the hydrolytic acidification effect is achieved, and stable operation of subsequent treatment structures or treatment equipment is guaranteed.
Then, the sewage enters the closed anaerobic tank 3 through the lifting pump water conveying pipeline 101, and the stirrer 11 is arranged on the anaerobic tank 3 to stir the sewage, and anaerobic phosphorus release occurs in the process. The sewage flows to the anoxic tank 4 for denitrification, flows to the aerobic tank 5 for aerobic phosphorus absorption and nitrification, removes a part of COD, and flows to the post-anoxic tank 6. Meanwhile, nitrate nitrogen in the aerobic tank 5 flows back to the anoxic tank 4 through the internal return pipeline 16 for mixing reaction, and sludge in the post-positioned anoxic tank 6 flows back to the anaerobic tank 3 through the first sludge return pipeline 17. The effluent of the post-positioned anoxic tank 6 enters an MBR membrane tank, denitrification and dephosphorization are carried out through an MBR membrane (701) arranged in the tank, COD (chemical oxygen demand) is removed, and meanwhile, a dosing device 13 is arranged on the MBR membrane tank to carry out chemical dephosphorization on sewage.
Finally, a part of the generated sludge is returned to the post-anoxic tank 6 through a second sludge return pipe 191, and a part of the surplus sludge is discharged phosphorus through a surplus sludge discharge pipe 18. And the effluent of the MBR membrane tank 7 enters the artificial wetland 8, the organic matters which are difficult to degrade are removed, and then the effluent enters the UV disinfection tank 9, and is discharged after being disinfected by ultraviolet.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Claims (5)
1. A novel rural sewage treatment system comprises: an artificial grating (1), a hydrolytic acidification regulating tank (2), an anaerobic tank (3), an anoxic tank (4), an aerobic tank (5), a post-positioned anoxic tank (6) and an MBR membrane tank (7),
an artificial grid (1): the right side of the device is provided with a hydrolytic acidification regulating tank (2);
a hydrolysis acidification adjusting tank (2): a regulating reservoir lifting pump (10) is arranged in the anaerobic tank, and the regulating reservoir lifting pump (10) is communicated into the anaerobic tank (3) through a water pipeline (101);
an anaerobic tank (3): an anaerobic tank stirrer (11) is arranged in the anaerobic tank, and an anoxic tank (4) is arranged on the right side;
an anoxic tank (4): the right side of the aerobic tank is provided with an aerobic tank (5);
an aerobic tank (5): an internal reflux pipeline (16) arranged at the bottom of the anaerobic tank is communicated with the anoxic tank (4), an aeration pump (12) connected with a main pump pipeline (121) is arranged at the upper part of the anaerobic tank, a first pipeline (122) and a second pipeline (123) which are branched from the main pump pipeline (121) extend into the aerobic tank (5) and the MBR membrane tank (7) to be respectively connected with an aerobic tank aeration device (124) and an MBR membrane tank aeration device (125), and a rear anoxic tank (6) is arranged at the right side of the anaerobic tank;
a post anoxic tank (6): the bottom of the anaerobic tank is provided with a first sludge return pipeline (17) which is communicated with the anaerobic tank (3), the bottom is also provided with a second sludge return pipeline (191) which is communicated with the MBR membrane tank (7) through an MBR membrane tank pipeline (19), and the right side is provided with the MBR membrane tank (7);
an MBR membrane tank (7): an MBR membrane (701) is arranged in the sludge treatment device and is connected with a suction pump (14) through a suction pipeline (141), a medicine adding device (13) is arranged at the upper part of the sludge treatment device and extends into the sludge treatment device through a medicine adding pipeline (131), and an MBR membrane pool pipeline (19) is arranged at the bottom of the sludge treatment device and branches into a second sludge backflow pipeline (191) and a residual sludge discharge pipeline (18).
2. The novel rural sewage treatment system of claim 1, wherein: the system further comprises: an artificial wetland (8) and a UV disinfection tank (9),
an artificial wetland (8): the left side of the device is provided with a collecting pipeline (801) which is communicated with the right side of the MBR membrane tank (7);
a UV disinfection tank (9): the left side of the device is provided with a disinfection pipeline (901) which is communicated with an artificial wetland (8), and the right side is provided with a discharge pipeline.
3. The novel rural sewage treatment system of claim 2, wherein: the aerobic tank (5) adopts a separated gallery type aerobic tank.
4. The novel rural sewage treatment system of claim 2, wherein: the MBR membrane tank (7) adopts a split type MBR membrane tank.
5. The novel rural sewage treatment system of claim 2, wherein: and the water conveying pipeline (101), the main pump pipeline (121), the second pipeline (123) and the suction pipeline (141) are provided with control valves (15).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921720647.6U CN210855718U (en) | 2019-10-10 | 2019-10-10 | Novel rural sewage treatment system |
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| CN201921720647.6U CN210855718U (en) | 2019-10-10 | 2019-10-10 | Novel rural sewage treatment system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112661357A (en) * | 2020-12-24 | 2021-04-16 | 江苏泰源环保科技股份有限公司 | Steel modular municipal sewage emergency treatment process |
| CN115180775A (en) * | 2022-08-02 | 2022-10-14 | 陕西地建土地工程技术研究院有限责任公司 | Low-load villages and small towns sewage rainwater flow distribution treatment system |
| CN116947249A (en) * | 2023-07-31 | 2023-10-27 | 上海勘测设计研究院有限公司 | Sewage purification treatment system |
-
2019
- 2019-10-10 CN CN201921720647.6U patent/CN210855718U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112661357A (en) * | 2020-12-24 | 2021-04-16 | 江苏泰源环保科技股份有限公司 | Steel modular municipal sewage emergency treatment process |
| CN115180775A (en) * | 2022-08-02 | 2022-10-14 | 陕西地建土地工程技术研究院有限责任公司 | Low-load villages and small towns sewage rainwater flow distribution treatment system |
| CN116947249A (en) * | 2023-07-31 | 2023-10-27 | 上海勘测设计研究院有限公司 | Sewage purification treatment system |
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