CN106938880B - Combined rural domestic sewage treatment system - Google Patents
Combined rural domestic sewage treatment system Download PDFInfo
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- CN106938880B CN106938880B CN201710356783.0A CN201710356783A CN106938880B CN 106938880 B CN106938880 B CN 106938880B CN 201710356783 A CN201710356783 A CN 201710356783A CN 106938880 B CN106938880 B CN 106938880B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
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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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The combined rural domestic sewage treatment system comprises grid tanks, anaerobic tanks and combined artificial wetland systems which are sequentially connected, wherein each combined artificial wetland system comprises a distribution tank and a plurality of groups of artificial wetland tanks which are longitudinally arranged in parallel, the distribution tank is communicated with the artificial wetland tanks, and each group of artificial wetland tanks comprises a hydrolysis acidification tank, two-stage spherical filler tanks, a multi-stage plant absorption tank, a ceramsite filtering tank, an ecological floating bed and a solar aeration tank. Rural domestic sewage flows into a buried anaerobic tank automatically after large-particle solid wastes such as leaves and domestic garbage are removed by a grid tank, part of COD in the sewage is reduced by anaerobic fermentation, undegradable macromolecular organic matters are decomposed into easily degradable micromolecular organic matters and then enter a combined artificial wetland system, the sewage is uniformly distributed into a plurality of subsequent groups of artificial wetland tanks which are longitudinally arranged in parallel through a distribution tank, and then the treated sewage directly reaches the standard and is discharged or enters a subsequent oxidation pond nearby for natural degradation and then is discharged or reused for farmland irrigation or garden greening.
Description
Technical Field
The invention discloses a combined rural domestic sewage treatment system, and particularly relates to a power-free hydraulic self-flowing rural domestic sewage distributed system.
Background
Along with the improvement of the living standard of people, the influence of domestic sewage discharge on the environment is gradually prominent, the problem of effective treatment of domestic sewage needs to be solved urgently, the construction of centralized sewage treatment plants at the city level, county level and even county level greatly solves the sewage treatment problem of urban areas, county areas and towns with centralized population, but China is used as a big agricultural country, the population in rural areas reaches 50%, the population in rural areas is relatively dispersed, a sewage collection pipe network is quite deficient, rainwater and sewage diversion cannot be basically realized, and an industrial sewage treatment mode cannot be applied to small-scale village-level sewage treatment. The land price of vast rural areas in China is relatively low, and a large number of waste ponds, wastelands and mudflats can be effectively utilized particularly in southern areas. The combined artificial wetland and oxidation pond technology is suitable for communities, campuses and rural areas with population scale below 5000 people, can effectively utilize the advantages of terrain, and can select ponds, wastelands or mudflats with lower terrain to reconstruct without rain and sewage diversion reconstruction to construct a large-scale sewage collection pipe network. Therefore, the artificial wetland technology has great advantages in the process of treating rural domestic sewage.
Disclosure of Invention
Aiming at the problem that the pollution to the environment is difficult because the existing vast rural domestic sewage is randomly discharged and cannot be treated in a centralized manner, the invention provides a combined rural domestic sewage treatment method, which effectively solves the problem that the pollution to the environment is difficult because the vast rural domestic sewage is randomly discharged and cannot be treated in a centralized manner in a powerless operation mode.
The invention relates to a combined rural domestic sewage treatment system, which comprises grid tanks, wherein the grid tanks are sequentially communicated with first to fifth anaerobic tanks and a combined artificial wetland system, the combined artificial wetland system comprises a water distribution tank and a plurality of groups of artificial wetland tanks which are longitudinally arranged in parallel, the water distribution tank is communicated with the plurality of groups of artificial wetland tanks which are longitudinally arranged in parallel, and each group of artificial wetland tanks comprises a hydrolysis acidification tank, a first spherical filler tank, a first plant absorption tank, a ceramsite filter tank, a second plant absorption tank, a third plant absorption tank, an ecological floating bed, a solar aeration tank and a second spherical filler tank which are communicated with the water distribution tank; rural domestic sewage automatically flows into a grid pond, after large-particle solid wastes in leaves and domestic garbage are removed by the grid pond, the rural domestic sewage automatically flows into first to fifth underground anaerobic ponds in sequence, COD in the sewage is reduced by anaerobic fermentation, the organic matter with high molecular weight and difficult degradation is decomposed into organic matter with low molecular weight and easy degradation, then the organic matter automatically flows into the combined artificial wetland system, firstly the sewage is uniformly distributed into a plurality of groups of subsequent artificial wetland pools which are longitudinally arranged in parallel through a water distribution pool, then the wastewater flows automatically in each group of artificial wetland pools sequentially through a hydrolysis acidification pool, a first spherical filler pool, a first plant absorption pool, a ceramsite filter pool, a second plant absorption pool, a third plant absorption pool, an ecological floating bed, a solar aeration pool and a second spherical filler pool, and the treated wastewater directly flows automatically to reach the standard and is discharged or flows automatically to enter an oxidation pond for further natural degradation and then is discharged.
The grating of the grating pool is a horizontal grating.
The lower parts of the first to fifth anaerobic ponds are buried below the ground surface, the lower parts of the first to fifth anaerobic ponds are set as anaerobic treatment functional areas, and ecological flower beds are arranged above the top plate.
Ecological flower bed highly for being higher than ground 40 ~ 60cm, and set up outstanding eaves mouth around the top of ecological flower bed, the eaves mouth width is 10 ~ 30 cm.
And a soft combined filler is arranged in the hydrolysis acidification tank.
The first spherical filler tank and the second spherical filler tank are internally provided with spherical fillers special for water treatment.
And ceramsite filler with the particle size of 3-5 mm is selected in the ceramsite filter tank.
The combined rural domestic sewage treatment system is arranged in a pond, a wasteland or a mudflat with a lower terrain into which sewage in a residential area can automatically flow.
The combined rural domestic sewage treatment system realizes unpowered operation by utilizing hydraulic self-flow.
The combined rural domestic sewage treatment system is integrally a landscape ecological garden.
The invention utilizes a grating pool, an anaerobic pool, a hydrolysis acidification pool, a spherical filler pool, a plant absorption pool, a ceramsite filter pool, an ecological floating bed and a solar aeration pool to carry out the optimized combination of biological contact oxidation, a biological filter pool, plant absorption and an oxidation pond technology, integrates microbial degradation, plant absorption and filter material filtration into a whole to be used for rural domestic sewage treatment, and the sewage treatment scale can be from 5m 3 /d～500m 3 And d, the sewage is treated in different areas, the sewage automatically flows into the sewage treatment system, the whole process adopts unpowered operation, and the problem of environmental pollution caused by the fact that the domestic sewage in vast rural areas cannot be treated in a centralized manner due to random discharge is effectively solved.
The technology of the invention is suitable for treating domestic sewage in living communities, campuses and rural areas with the population scale of 100-5000 people in the south of China. The method is particularly suitable for reforming rural waste ponds, wastelands and mudflats into wetland ecological landscape, and effectively treats domestic sewage while improving sensory environment and then is used for greening, garden irrigation and the like.
The invention is further described with reference to the following figures and detailed description.
Drawings
FIG. 1 is a sectional view of a combined rural domestic sewage treatment technology system related to the invention.
Reference numbers in the figures: 1-a grid tank, 2-a first anaerobic tank, 3-a second anaerobic tank, 4-a third anaerobic tank, 5-a fourth anaerobic tank, 6-a fifth anaerobic tank, 7-an anaerobic tank cover plate, 8-an ecological flower bed, 9-a distribution tank, 10-a hydrolysis acidification tank, 11-a first spherical filler tank, 12-a first plant absorption tank, 13-a ceramsite filter tank, 14-a second plant absorption tank, 15-a walkway plate, 16-a third plant absorption tank, 17-an ecological floating bed and solar aeration tank, and 18-a second spherical filler tank.
Detailed Description
As shown in fig. 1, an embodiment of a combined rural domestic sewage treatment system of the present invention comprises a grid tank 1, wherein the grid tank 1 is sequentially communicated with first to fifth anaerobic tanks 2, 3, 4, 5, 6 and a combined artificial wetland system, wherein the combined artificial wetland system comprises a distribution tank 9 and a plurality of groups of artificial wetland tanks which are longitudinally arranged in parallel, the distribution tank 9 is communicated with the plurality of groups of artificial wetland tanks which are longitudinally arranged in parallel, each group of artificial wetland tanks comprises a hydrolysis acidification tank 10, a first spherical filler tank 11, a first plant absorption tank 12, a ceramsite filter tank 13, a second plant absorption tank 14, a third plant absorption tank 16, an ecological floating bed, a solar aeration tank 17 and a second spherical filler tank 18 which are communicated with the distribution tank 9.
The grid pool 1, the first to fifth anaerobic pools 2, 3, 4, 5 and 6 and the combined artificial wetland system are constructed in a steel-concrete or brick-concrete mode, the sewage amount is estimated according to the population number in a sewage storage area during design, and the volume of each structure is calculated according to the sewage amount, the pollutant concentration and the pollutant treatment load of each structure.
Wherein, horizontal grids are arranged on four walls or partial walls of the grid pond 1. Vertical grid in the traditional grid pond is changed into horizontal grid like this, the effectual problem of having solved that the filter area is little, the filtration resistance is big that causes because of the clearance is not in time in the traditional grid. The use of horizontal grid, great increase filter area, prolonged the clearance time, can prolong the clearance time to more than 3 months.
First ~ fifth anaerobism pond 2, 3, 4, 5, 6's lower part is buried underground below the earth's surface, and first ~ fifth anaerobism pond 2, 3, 4, 5, 6's lower part sets up to the anaerobic treatment functional area, the roof adopts cast-in-place mode to form, the roof top sets up ecological flower bed 8, ecological flower bed 8 highly designs for being higher than ground 40 ~ 60cm according to the anthropology law, and set up outstanding eaves mouth around the top of ecological flower bed 8, the width is 10 ~ 30cm, and set up the marble panel at ecological flower bed 8's eaves mouth and facade, make it become a rest platform.
The method comprises the following steps of selecting aquatic plants with strong sewage absorbing capacity at the front section of an artificial wetland pool, selecting spherical fillers and semi-soft fillers with high filtration porosity, selecting hydrophilic plants with relatively weak sewage absorbing capacity and relatively low growth rate but developed root systems at the rear section, designing ceramsite fillers with low filtration porosity to fully filter suspended matters in the wastewater and further remove organic matters in the wastewater by utilizing microorganisms attached to and growing on the surfaces of the ceramsite. Such as: the hydrolysis acidification tank 10 is internally provided with soft combined filler. Spherical fillers special for water treatment are arranged in the first spherical filler tank 11 and the second spherical filler tank 18. Plants such as aquatic plantain and the like are planted in the first, second and third plant absorption tanks 12, 14 and 16, and plant root systems are directly placed in the wastewater to absorb pollutants such as nitrogen, phosphorus and the like. And ceramsite filler with the particle size of 3-5 mm is selected in the ceramsite filter tank 13 to filter and remove suspended fine particles in the wastewater. The ecological floating bed and the solar aeration tank 17 are internally provided with the ecological floating bed and a solar aeration device to increase the oxygen concentration in the pond and ensure that the effluent quality meets the discharge requirement.
The combined rural domestic sewage treatment system is constructed by selecting ponds, wastelands or mudflats with low terrain into which sewage in residential areas can automatically flow, so that the wastewater can automatically flow and can be conveniently discharged. Therefore, by utilizing the hydraulic self-flow principle, the whole system of the invention can run without power, and the functions of microbial degradation, plant absorption, filter material filtration and the like are fully utilized to realize the distributed treatment of rural domestic sewage.
The invention designs the combined rural domestic sewage treatment system into a landscape ecological garden on the basis of the overall appearance design.
When the combined artificial wetland system is used, rural domestic sewage automatically flows into the combined rural sewage treatment system, large-particle solid wastes such as leaves and domestic garbage are removed by the grid tank 1 and then automatically flows into the buried anaerobic tanks 2, 3, 4, 5 and 6 in sequence, part of COD in the sewage is reduced through anaerobic fermentation, and macromolecular organic matters which are difficult to degrade are decomposed into small-molecular organic matters which are easy to degrade and then enter the combined artificial wetland system. When the sewage enters the combined type artificial wetland system, the sewage is uniformly distributed into a plurality of subsequent groups of artificial wetland pools which are longitudinally arranged in parallel through a distribution reservoir 9, then the sewage sequentially passes through a hydrolysis acidification tank 10, a first spherical filler tank 11, a first plant absorption tank (flowerpot tank) 12, a ceramsite filter tank 13, a second plant absorption tank (water lettuce tank) 14, a third plant absorption tank (banana flower tank) 16, an ecological floating bed, a solar aeration tank 17 and a second spherical filler tank 18 in each group of artificial wetland pools, and the treated sewage directly reaches the standard and is discharged or enters a subsequent oxidation pond nearby for further natural degradation and then is discharged or is reused for farmland irrigation or garden greening.
The above is only a preferred embodiment of the present invention, and various modifications and variations of the present invention will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. For example, the number of the anaerobic tank, the ceramsite filtering tank, the spherical filling tank and the plant absorption tank can be increased or decreased according to the daily sewage treatment amount, and all the numbers are included in the protection scope of the invention.
Claims (10)
1. A combined rural domestic sewage treatment system comprises a grid pool (1) and is characterized in that the grid pool is sequentially communicated with first to fifth anaerobic pools (2, 3, 4, 5 and 6) and a combined artificial wetland system, the combined artificial wetland system comprises a water distribution pool (9) and a plurality of groups of artificial wetland pools which are longitudinally arranged in parallel, the water distribution pool is communicated with the plurality of groups of artificial wetland pools which are longitudinally arranged in parallel, each group of artificial wetland pools comprises a hydrolysis acidification pool (10) communicated with the water distribution pool, a first spherical filler pool (11), a first plant absorption pool (12), a ceramsite filter pool (13), a second plant absorption pool (14), a third plant absorption pool (16), an ecological floating bed, a solar aeration pool (17) and a second spherical filler pool (18); rural domestic sewage automatically flows into a grid pond, after large-particle solid wastes in leaves and domestic garbage are removed by the grid pond, the rural domestic sewage automatically flows into first to fifth buried anaerobic ponds (2, 3, 4, 5 and 6) in sequence, COD in the sewage is reduced by anaerobic fermentation, the organic matter with high molecular weight and difficult degradation is decomposed into organic matter with low molecular weight and easy degradation, then the organic matter automatically flows into the combined artificial wetland system, firstly the sewage is uniformly distributed into a plurality of groups of subsequent artificial wetland pools which are longitudinally arranged in parallel through a water distribution pool, then the wastewater flows through a hydrolysis acidification tank, a first spherical filler tank, a first plant absorption tank, a ceramsite filtering tank, a second plant absorption tank, a third plant absorption tank, an ecological floating bed, a solar aeration tank and a second spherical filler tank in sequence, and the treated wastewater directly reaches the standard and is discharged or enters an oxidation pond nearby for further natural degradation and then is discharged.
2. The combined rural domestic sewage treatment system of claim 1, wherein the grating of the grating tank is arranged as a horizontal grating.
3. The combined rural domestic sewage treatment system according to claim 1, wherein the lower parts of the first to fifth anaerobic tanks are buried under the ground surface, the lower parts of the first to fifth anaerobic tanks are arranged as an anaerobic treatment functional area, and an ecological flower bed (8) is arranged above the top plate.
4. The combined rural domestic sewage treatment system of claim 3, wherein the height of the ecological flower bed is 40-60 cm higher than the ground, and a protruded cornice is arranged around the top of the ecological flower bed, and the width of the cornice is 10-30 cm.
5. The combined rural domestic sewage treatment system of claim 1 wherein a soft combined filler is disposed in the hydrolysis acidification tank.
6. The combined rural domestic sewage treatment system of claim 1, wherein the first and second spherical filler tanks are filled with spherical fillers dedicated for water treatment.
7. The combined rural domestic sewage treatment system of claim 1, wherein the ceramsite filter tank is filled with ceramsite with the particle size of 3-5 mm.
8. The combined rural domestic sewage treatment system according to claim 1, wherein the combined rural domestic sewage treatment system is arranged in a pond, wasteland or beach with low terrain into which the sewage in the residential area can automatically flow.
9. The combined rural domestic sewage treatment system of claim 1, wherein the combined rural domestic sewage treatment system is unpowered by hydraulic gravity flow.
10. The combined rural domestic sewage treatment system of claim 1, wherein the combined rural domestic sewage treatment system is integrally a landscape ecological garden.
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| CN201710356783.0A CN106938880B (en) | 2017-05-16 | 2017-05-16 | Combined rural domestic sewage treatment system |
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| CN201710356783.0A CN106938880B (en) | 2017-05-16 | 2017-05-16 | Combined rural domestic sewage treatment system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108862829A (en) * | 2018-06-25 | 2018-11-23 | 东莞市合智知识产权代理有限公司 | Domestic sewage processing system |
| CN109879536B (en) * | 2019-03-12 | 2022-06-03 | 段林卓 | Rural domestic sewage purification system and purification method |
| CN110092534A (en) * | 2019-04-19 | 2019-08-06 | 王涛 | A kind of biodegradable sanitary wastewater processing system and its application method |
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