CN211470928U - Integrated rural sewage treatment device - Google Patents
Integrated rural sewage treatment device Download PDFInfo
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- CN211470928U CN211470928U CN201922460800.2U CN201922460800U CN211470928U CN 211470928 U CN211470928 U CN 211470928U CN 201922460800 U CN201922460800 U CN 201922460800U CN 211470928 U CN211470928 U CN 211470928U
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- 239000010865 sewage Substances 0.000 title claims abstract description 60
- 239000010802 sludge Substances 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000001914 filtration Methods 0.000 claims abstract description 33
- 238000000605 extraction Methods 0.000 claims abstract description 19
- 238000000746 purification Methods 0.000 claims abstract description 11
- 238000004062 sedimentation Methods 0.000 claims abstract description 6
- 238000005273 aeration Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 16
- 238000004880 explosion Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000008213 purified water Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008654 plant damage Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model belongs to the technical field of sewage treatment. For solving the technical problem who exists among the present rural sewage treatment process, the utility model provides a rural sewage treatment plant of integrated form, including handling the jar, its characterized in that: a filtering tank is arranged in the treatment tank, the space between the treatment tank and the filtering tank is divided into an anoxic zone and an aerobic zone, a sewage inlet pipe and a sewage overflow pipe are arranged on the tank wall of the anoxic zone, and the sewage overflow pipe is communicated with the anoxic zone and the aerobic zone through a pipeline; a filtering layer is arranged in the tank body of the filtering tank, a water purifying area is formed at the top of the filtering layer, a settling area is formed at the lower part of the filtering layer, and a through pipe is arranged between the settling area and the aerobic area; the bottom ends of the sludge extraction pipe and the gas stripping pipe respectively penetrate through the water purification area and the filtering layer to reach the bottom of the sedimentation area, the top end of the gas stripping pipe is connected with the gas explosion pipe, and the top end of the sludge extraction pipe is positioned at the upper part of the water purification area. The device can effectively reduce the operation cost and improve the sewage treatment efficiency.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, specifically indicate a rural sewage treatment plant of integrated form.
Background
The current rural water environment treatment situation is still very severe, and the current rural sewage treatment faces various problems, including unclear sewage treatment route, large load of the sewage treatment facility caused by the excrement and urine sewage, high operation cost, specific requirements on personnel on duty operation and the like. Therefore, the rural sewage treatment in China cannot move the old set of ways for centralized treatment of urban sewage, but is combined with the requirements of low carbon, circulation, reutilization and ecology, so that a proper sewage treatment route is defined, and sewage treatment facilities with low operation cost are taken as key measures for solving the problems.
The current rural domestic sewage treatment facilities are based on a biological method, are divided into an activated sludge method and a biofilm method, and are used in the rural sewage treatment facilities. A contact oxidation process is generally used under a biofilm process, a filler is used as a carrier for attaching microorganisms, oxygen supply is realized through fan aeration or rotary disc rotation, and the process has the general problem of unstable operation caused by insufficient microorganism biomass. Compared with the biomembrane method, the activated sludge method has strong load resistance and high operation stability, and meets the current situations of unstable water quality and water quantity and unreasonable classification of the sewage in rural areas of China currently and in a future period of time, in particular to the problem of mixing of the excrement and urine sewage. At present, an anoxic/aerobic (A/O) process is mainly used, the A/O process is a feasible, economic and effective treatment mode and has a function of removing total nitrogen, but a mud-water separation (secondary sedimentation tank) facility needs to be matched, and after mud-water separation, if the effluent suspended matter is still high, a filtering device needs to be additionally arranged, so that more treatment facilities exist, and the problems of difficult operation and expensive operation exist. In addition, although the membrane treatment process (MBR) based on the activated sludge process is also used in rural water treatment, and the effluent is stable and good, the construction cost is high, the operation cost is high, and the technical level requirement is high, so that the MBR has various constraints on economic and technical requirements, and cannot be widely used in rural sewage treatment.
Disclosure of Invention
In order to solve the technical problem existing in the current rural sewage treatment process, the utility model provides an integrated rural sewage treatment device, which is used for achieving the technical purposes of saving the occupied area, reducing the production cost and stably discharging water.
In order to realize the technical purpose, the utility model discloses a technical scheme does: the utility model provides a rural sewage treatment plant of integrated form, includes the treatment tank, its characterized in that: a filtering tank is arranged in the treatment tank, the space between the treatment tank and the filtering tank is divided into an anoxic zone and an aerobic zone, a sewage inlet pipe and a sewage overflow pipe are arranged on the tank wall of the anoxic zone, and the sewage overflow pipe is communicated with the anoxic zone and the aerobic zone through a pipeline; a filtering layer is arranged in the tank body of the filtering tank, a water purifying area is formed at the top of the filtering layer, a settling area is formed at the lower part of the filtering layer, and a through pipe is arranged between the settling area and the aerobic area; the bottom ends of the sludge extraction pipe and the gas stripping pipe respectively penetrate through the water purification area and the filtering layer to reach the bottom of the sedimentation area, the top end of the gas stripping pipe is connected with the gas explosion pipe, and the top end of the sludge extraction pipe is positioned at the upper part of the water purification area.
Furthermore, the top end of the sludge extraction pipe is provided with a tee joint, two branch pipes of the tee joint are respectively connected with a sludge return pipe and a sludge discharge pipe, and the sludge return pipe is opened at the top of the anoxic zone.
The sewage treatment device further comprises an aerobic tank, wherein a circulation pipeline is arranged between the aerobic tank and the aerobic zone, the circulation pipeline is that the outlet of the sewage overflow pipe is connected with the aerobic tank, and a return pipeline is arranged between the aerobic tank and the aerobic zone.
Further, it is cylindrical jar body to filter jar and processing jar, and the bottom of filtering the jar is hourglass hopper-shaped, filters jar and the coaxial setting of processing jar.
Furthermore, the interval angle between the sewage inlet pipe and the sewage overflow pipe is close to 180 degrees.
Furthermore, a second sludge extraction pipe and a second gas stripping pipe are arranged in the aerobic zone, the bottom ends of the second sludge extraction pipe and the second gas stripping pipe are close to the bottom of the aerobic zone, the second gas stripping pipe is connected with a gas explosion pipe, and the top end of the second sludge extraction pipe is opened at the top of the anoxic zone.
The utility model has the advantages that: 1. realize depositing and filter the integration, through set up the filter layer at the filtration jar, the filter layer top sets up the water purification district, under the condition that does not have apparent increase head loss, gets rid of the suspended solid on the spot. During normal operation, the forward flushing of the filter layer is synchronously completed through rapid drop of the water level while the sludge is discharged, so that automatic cleaning is realized, and the dirt intercepting capability of the filter layer is effectively ensured; 2. the device is not additionally provided with a backwashing water pump fan, and the floor area is not obviously increased; 3. the sludge backflow and the surplus sludge discharge are both subjected to air stripping, an air source is from an aeration fan, no additional facility is provided, the multipurpose use is realized, and the sludge backflow period and the sludge backflow duration are flexibly adjusted according to the operation requirement through an electric control design (a time relay and a contactor) in the operation process; 4. by reasonably arranging the inlet and outlet positions and optimizing the flow state and realizing the process requirement of the anoxic zone through hydraulic mixing, on one hand, no external power stirring device is arranged, the operation cost is reduced, on the other hand, the dissolved oxygen in the anoxic zone is favorably controlled, and the high-efficiency operation of denitrification reaction is promoted; 4. through the physical operation analysis, the direct operation cost is mainly electric charge, the operation cost per ton of water is 0.3 yuan, and the maintenance cost is almost ignored.
Drawings
Fig. 1 is a structural plan view of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and embodiments.
As shown in attached drawings 1 and 2, the integrated rural sewage treatment device comprises a treatment tank 1, wherein a filter tank 2 is arranged in the treatment tank 1, the treatment tank 1 and the filter tank 2 are reinforced by steel frames and are made of glass steel materials, and the integrated rural sewage treatment device can be integrally formed and solve the problem of internal and external leakage. The treatment tank 1 and the filter tank 2 are cylindrical tanks, are coaxially arranged and are square, the volume utilization rate is high, dead-angle areas do not exist, and the pressure resistance is high.
As shown in attached figures 1 and 2, the space between the treatment tank 1 and the filter tank 2 is divided into an anoxic zone 3 and an aerobic zone 4 by a partition plate 16, a sewage inlet pipe 5 and a sewage overflow pipe 6 are arranged on the tank wall of the anoxic zone, the sewage inlet pipe 5 is externally connected with a lifting water pump, and the sewage overflow pipe 6 is used for connecting the anoxic zone 3 and the aerobic zone 4 in a through manner through a pipeline. Specifically, in this embodiment, as shown in fig. 1 and fig. 2, an aerobic tank 7 is further provided, a water outlet of the sewage overflow pipe 6 is connected to the aerobic tank 7, and the aerobic tank 7 is connected to the aerobic zone 4 through a return pipe 17. The aerobic tank 7 can be set according to the sewage source, the fluctuation of water quality and water quantity and the retention time needing to be adjusted. If the treatment capacity is small and the fluctuation of water quality and water quantity is not large, the aerobic tank 7 can be omitted, and the water outlet of the sewage overflow pipe 6 is directly arranged at the top of the aerobic zone 4.
As shown in attached figure 1 and attached figure 2, dirty pipe 5 and overflow dirty pipe 6 adopt diagonal arrangement mode when setting up, the angle of strideing across between dirty pipe 5 and the overflow dirty pipe 6 promptly is close 180 settings, utilize water conservancy to mix and realize anoxic zone technology demand, need not peripheral hardware power agitating unit, can reduce the running cost, on the other hand is favorable to controlling anoxic zone dissolved oxygen, promote the high-efficient operation of denitrogenation reaction and can guarantee that sewage is at the abundant flow in anoxic zone, effectively avoid the short-circuit. During operation, sewage enters the regulating tank through the pipe network, enters the lower part of the anoxic zone 3 of the treatment tank through the lifting water pump and the sewage inlet pipe 5, and is subjected to mud-water mixing and reaction to complete organic matter degradation and denitrification, so that COD (chemical oxygen demand) is realizedCrThe ammonia nitrogen is removed preliminarily, the sewage overflow pipe 6 on the upper part of the diagonal line enters an aerobic zone after biochemical reaction, the degradation of organic matters can be further completed in the aerobic zone, and COD (chemical oxygen demand) is realizedCrAnd effectively removing ammonia nitrogen. As shown in attached figures 1 and 2, a filter layer 8 is arranged in the filter tank 2, the thickness is generally controlled to be 60-80cm, the filter material is selected from graded volcanic rock, the material is light, the adsorption capacity is strong, the cost is low, and the filter material has higher applicability in technology and economy compared with quartz sand and activated carbon. The top tank body of the filter layer 8 forms a water purification area 9, the lower tank body of the filter layer 8 forms a settling area 10, and the bottom of the filter tank 2 is made into a funnel shape when being manufactured for storing and improving the sludge concentration.
As shown in the attached drawings 1 and 2, the settling zone 10 of the filtering tank 2 is communicated with the aerobic zone 4 through a pipeline, in the design process, a vertical pipe 11 is arranged at the center of the filtering tank 2, the top opening of the vertical pipe is communicated with the outside above the water purifying zone 9, the bottom end of the vertical pipe 11 points to the interior of a funnel of the settling zone 10, the vertical pipe 11 is connected with the settling zone 10 and the communicating pipeline between the aerobic zone 4, the settling zone 10 forms a central water inlet mode, the sedimentation of sludge is accelerated, the water level in the settling zone 10 also rises synchronously along with the rising of the water level in the aerobic zone 4, the water level exceeds the filtering layer 8 and then is filtered by the filtering layer 8, purified water is formed in the water purifying zone 9 above the filtering layer 8, and the purified water. Microorganisms in the settling zone 10 degrade organic matters through metabolism, and after the operation for a period of time, the microorganisms proliferate to cause the sludge amount to increase, and at the moment, part of sludge (called residual sludge) in the settling zone 10 needs to be discharged to ensure the normal operation of the system. As shown in attached figures 1 and 2, in the application, the sludge is removed by adopting an air stripping mode, and the specific structure is that a sludge extraction pipe 12 and an air stripping pipe 13 are arranged in a filter tank, the bottom ends of the sludge extraction pipe 12 and the air stripping pipe 13 respectively penetrate through a water purification area 9 and a filter layer 8 to reach the bottom of a sedimentation area 10, the top end of the air stripping pipe 13 is connected with an aeration pipe, the top end of the sludge extraction pipe is positioned at the upper part of the water purification area and is connected with a tee joint 18 at the end, two branch pipes of the tee joint are respectively connected with a sludge return pipe 14 and a sludge discharge pipe 15, and the sludge return pipe 14 is opened at the top of an. When sludge needs to be discharged, gas is blown into the bottom of the settling zone through the gas stripping pipe 13 to disturb the sludge at the bottom of the settling zone, the sludge enters the sludge extraction pipe 12 and rises along the sludge extraction pipe 12 under the blowing of the gas so as to be discharged, and the discharged sludge can enter the anoxic zone 3 or can be directly discharged and collected by arranging control valves on the sludge return pipe 14 and the sludge discharge pipe 15. Because the water level in the filtering tank 2 can be sharply reduced while the sludge is discharged, and the purified water in the water purifying area 9 flows downwards, the forward flushing of the filtering layer 8 is realized, and the sewage intercepting capability of the filtering layer is effectively ensured.
The device is through increasing water purification district 9, and head loss is little, can improve the stability of operation, under the prerequisite that does not increase backwash water pump fan, adopts the air stripping method to discharge mud, washs filter layer 8 in step when the exhaust, reaches area reduction, practices thrift the purpose of running cost.
When the device operates, all sludge backflow is not lifted by a conventional water pump, and the aeration fan is designed to carry out air stripping backflow, so that the equipment failure rate is reduced, and the maintenance cost of the lifting pump can be obviously saved. Simultaneously the device changes the drawback that the maintenance is not convenient for after glass steel horizontal tank area is big, the internal plant damages among the traditional design, designs for vertical jar, and the whole apron of tank deck is fixed with the jar body with the screw, practices thrift area, makes things convenient for the internal plant maintenance.
Claims (6)
1. The utility model provides a rural sewage treatment plant of integrated form, includes the treatment tank, its characterized in that: a filtering tank is arranged in the treatment tank, the space between the treatment tank and the filtering tank is divided into an anoxic zone and an aerobic zone, a sewage inlet pipe and a sewage overflow pipe are arranged on the tank wall of the anoxic zone, and the sewage overflow pipe is communicated with the anoxic zone and the aerobic zone through a pipeline; a filtering layer is arranged in the tank body of the filtering tank, a water purifying area is formed at the top of the filtering layer, a settling area is formed at the lower part of the filtering layer, and a through pipe is arranged between the settling area and the aerobic area; the bottom ends of the sludge extraction pipe and the gas stripping pipe respectively penetrate through the water purification area and the filtering layer to reach the bottom of the sedimentation area, the top end of the gas stripping pipe is connected with the aeration pipe, and the top end of the sludge extraction pipe is positioned at the upper part of the water purification area.
2. The integrated rural sewage treatment plant of claim 1, wherein: the top end of the sludge extraction pipe is provided with a tee joint, two branch pipes of the tee joint are respectively connected with a sludge return pipe and a sludge discharge pipe, and the sludge return pipe is opened at the top of the anoxic zone.
3. The integrated rural sewage treatment plant of claim 1, wherein: the aerobic tank is connected with the aerobic tank through a circulation pipeline, the outlet of the sewage overflow pipe is connected with the aerobic tank, and a return pipeline is arranged between the aerobic tank and the aerobic zone.
4. The integrated rural sewage treatment plant of claim 1, wherein: the filter tank is cylindrical jar body with the processing jar, and the bottom of filtering the jar is hourglass hopper-shaped, filters jar and the coaxial setting of processing jar.
5. The integrated rural sewage treatment plant of claim 1, wherein: the interval angle between the sewage inlet pipe and the sewage overflow pipe is close to 180 degrees.
6. The integrated rural sewage treatment plant of claim 1, wherein: and a second sludge extraction pipe and a second gas stripping pipe are arranged in the aerobic zone, the bottom ends of the second sludge extraction pipe and the second gas stripping pipe are close to the bottom of the aerobic zone, the second gas stripping pipe is connected with an aeration pipe, and the top end of the second sludge extraction pipe is opened at the top of the anoxic zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922460800.2U CN211470928U (en) | 2019-12-31 | 2019-12-31 | Integrated rural sewage treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922460800.2U CN211470928U (en) | 2019-12-31 | 2019-12-31 | Integrated rural sewage treatment device |
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| Publication Number | Publication Date |
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| CN211470928U true CN211470928U (en) | 2020-09-11 |
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| CN201922460800.2U Active CN211470928U (en) | 2019-12-31 | 2019-12-31 | Integrated rural sewage treatment device |
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| CN (1) | CN211470928U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018111A (en) * | 2019-12-31 | 2020-04-17 | 荣成市水务集团有限公司 | Integrated rural sewage treatment device |
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2019
- 2019-12-31 CN CN201922460800.2U patent/CN211470928U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018111A (en) * | 2019-12-31 | 2020-04-17 | 荣成市水务集团有限公司 | Integrated rural sewage treatment device |
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