CN113772894A - Sewage treatment system - Google Patents
Sewage treatment system Download PDFInfo
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- CN113772894A CN113772894A CN202111145120.7A CN202111145120A CN113772894A CN 113772894 A CN113772894 A CN 113772894A CN 202111145120 A CN202111145120 A CN 202111145120A CN 113772894 A CN113772894 A CN 113772894A
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- pond
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- contact oxidation
- filter bed
- biochemical
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Images
Classifications
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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
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
-
- 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
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Landscapes
- 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)
Abstract
The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system, which comprises a combined biochemical pond, a natural contact oxidation pond and a self-purification pond which are sequentially communicated; the combined biochemical pond comprises a grid pond, an adjusting pond, a biochemical pond and a filter bed which are sequentially communicated, and the filter bed is communicated with the natural contact oxidation pond. Wherein, the grid pond is mainly used for intercepting the floater in the sewage, the adjusting tank is used for maintaining the stability of the water quality, the biochemical pond can decompose the organic matter into water, carbon dioxide and other substances, the organic matter enters the natural contact oxidation pond to be further ecologically intercepted after reaching the standard, and BOD, COD and NH in the water are reduced3And organic pollutants such as-N, TP and the like finally enter the self-cleaning pond, so that the water body can be purified, and the self-cleaning pond can be combined with the rural aquaculture industry. Therefore, the rural sewage treatment system has strong realizability, and not only can treat the common BOD in the rural sewage,COD、NH3The removing effect of pollutants such as-N, TP and the like is better, and the ecological effect, the economic effect and the landscape effect in rural areas can be improved.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system.
Background
With the rapid development of economic society and the improvement of living standard, people have higher requirements on the comfort degree of living environment.
The rural sewage treatment technology which is limited by various factors of resources such as regional economic conditions, climatic conditions, village land and the like, low in development investment, small in occupied area, stable and reliable in treated water quality, low in running cost and simple in operation is an important development trend in the current water treatment field, and meanwhile, due to the fact that technical personnel are lack and economic strength is weak in rural areas, particularly the lack of matched infrastructure for sewage treatment, the development of the rural sewage treatment technology is further limited.
Disclosure of Invention
The invention aims to provide a sewage treatment system which can effectively purify pollutants in water.
The invention provides a sewage treatment system, which comprises a combined biochemical pond, a natural contact oxidation pond and a self-purification pond which are communicated in sequence;
the combined biochemical pond comprises a grid pond, an adjusting pond, a biochemical pond and a filter bed which are sequentially communicated, and the filter bed is communicated with the natural contact oxidation pond.
Further, a first partition plate is arranged between the adjusting tank and the biochemical tank, and a first overflow port is arranged above the first partition plate;
a second partition plate is arranged between the biochemical pool and the filter bed, and a second overflow port is arranged above the second partition plate;
a third clapboard is arranged between the filter bed and the natural contact oxidation pond, and a third overflow port is arranged below the third clapboard.
Further, from top to bottom, the filter bed consists of a height ratio of (5-9): (3-7): (1-5): (1-3) raw soil, river sand, zeolite and coconut coir;
wherein, any one or more of pinus alternatus, canna or arundo donax can be planted on the raw soil.
Further, a first pipeline with the length of 8-12m is arranged between the filter bed and the natural contact oxidation pond, and water-resistant plants and/or deep-rooted plants are planted above the first pipeline.
Furthermore, any one or more of camphor trees, ash trees, basswood, ash trees, metasequoia, salix robusta, quercus robur, red pine, sundew, vetiver grass, Chinese scholartree, elm, mulberry trees or pennywort is planted above the first pipeline, and the distance between any two adjacent plants is 5-7 m.
Further, flexible biological carriers, aquatic plants and emergent aquatic plants are arranged or planted in the natural contact oxidation pond;
wherein the aquatic plant comprises one or more of algae, watermifoil, copper coin grass, water lily, canna, iris or calamus;
the emergent aquatic plant comprises one or more of folium Phragmitis, herba Typhae, corm Eleocharitis, flos Nelumbinis, herba Oenanthes Javanicae, flos Chrysanthemi, flos Nelumbinis or rhizoma Typhae.
Furthermore, a second pipeline with the length of 40-60m is arranged between the natural contact oxidation pond and the self-cleaning pond, and any one or more of pumpkins, loofah, white gourds, bitter gourds, gourds or green beans are planted above the second pipeline.
Further, emergent aquatic plants, tape grass, algae, shellfish, shrimps and poultry are planted or cultured in the self-purification pond;
the algae comprises one or two of small arrowhead algae or chlorella;
the shellfish fish and shrimp comprise one or more of freshwater shrimp, periwinkle snail, freshwater mussel, snakehead or grass carp.
Furthermore, a regulating pump is arranged on a pipeline communicated with the grating tank and the regulating tank.
Further, the effective volume ratio of the grid pond, the adjusting pond, the biochemical pond and the filter bed is (4-8): (30-40): (60-80): (25-40);
the effective area ratio of the natural contact oxidation pond to the self-purification pond is (300-450): (1400-1800).
Compared with the prior art, the sewage treatment system has the following advantages:
the sewage treatment system comprises a grating tank, an adjusting tank, a biochemical tank, a filter bed, a natural contact oxidation pond and a self-cleaning pond which are sequentially communicated, wherein the grating tank is mainly used for intercepting floating objects in sewage, the adjusting tank is used for maintaining the stability of water quality, the biochemical tank can decompose organic matters into substances such as water, carbon dioxide and the like, the substances enter the natural contact oxidation pond after the treatment reaches the standard to further carry out ecological interception so as to reduce BOD, COD and NH in the water3And organic pollutants such as-N, TP and the like finally enter the self-cleaning pond, so that the water body can be cleaned, and the self-cleaning pond can be combined with the rural aquaculture industry. Therefore, the rural sewage treatment system has strong realizability, and not only can treat the common BOD, COD and NH in the rural sewage3The removing effect of pollutants such as-N, TP and the like is better, and the ecological effect, the economic effect and the landscape effect in rural areas can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a wastewater treatment system according to the present invention;
FIG. 2 is a schematic view of a filter bed of the present invention;
FIG. 3 is a schematic view of a natural contact oxidation pond of the present invention;
fig. 4 is a schematic view of the self-cleaning pond of the present invention.
Description of reference numerals:
1: a grid tank; 2: a regulating tank; 3: a biochemical pool; 4: a filter bed; 5: naturally contacting the oxidation pond; 6: a self-cleaning pond; 7: raw soil; 8: river sand; 9: a zeolite; 10: coconut coir.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used 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 thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 4, the present invention provides a sewage treatment system comprising a combined biochemical pond, a natural contact oxidation pond 5 and a self-cleaning pond 6 which are communicated in sequence; the combined biochemical pond comprises a grating pond 1, an adjusting pond 2, a biochemical pond 3 and a filter bed 4 which are sequentially communicated, and the filter bed 4 is communicated with the natural contact oxidation pond 5.
Aiming at the problems of wide dispersibility and low pollutant concentration of rural sewage in the prior art, a combined biochemical pond is used for removing most pollutants; the natural contact oxidation pond 5 can further reduce organic pollutants in water, increase dissolved oxygen in water and reduce NH through the actions of natural oxygenation, system nitrification and microbial community adhesion of plants and root systems thereof3N, COD and BOD5The effect of good ecological landscape can be achieved; the self-cleaning pond 6 combines the microorganisms and algae symbionts with aquaculture, so that the ecological restoration effect can be achieved, and certain economic benefits can be achieved. Therefore, the sewage treatment system of the invention can thoroughly recover pollutants in rural sewage without using chemical raw materials, not only can purify the pollutants in the water, but also can bring certain economic, social and ecological benefits.
On the basis of the technical scheme, a first partition plate is arranged between the regulating tank 2 and the biochemical tank 3, and a first overflow port is arranged above the first partition plate; a second partition plate is arranged between the biochemical pool 3 and the filter bed 4, and a second overflow port is arranged above the second partition plate; a third clapboard is arranged between the filter bed 4 and the natural contact oxidation pond 5, and a third overflow port is arranged below the third clapboard.
The adjusting tank 2 is mainly used for adjusting the water quality and the water quantity of sewage, when preventing that the water quantity is unbalanced, whole sewage treatment system's ecological unbalance, and water quality indicates sewage treatment index such as COD, BOD, ammonia nitrogen of sewage promptly, is provided with first baffle between adjusting tank 2 and the biochemical pond 3, and the sewage up to standard after the adjusting tank 2 handles can overflow to the biochemical pond 3 in through first overflow mouth, and the mud of adjusting tank 2 bottom can be as follow-up self-purification pond 6 or ecological landscape plant's fertilizer.
Biochemical pond 3 indicates the anaerobism pond promptly for improve anaerobic environment, with the organic matter conversion in the sewage for water and carbon dioxide, remove the organic matter in the sewage, purify the biology of sewage, need not add chemical reagent, energy-concerving and environment-protective more. A second clapboard is arranged between the biochemical pool 3 and the filter bed 4, and the sewage treated by the biochemical pool 3 can enter the filter bed 4 through a second overflow port.
The filter bed 4 mainly comprises the crushed stones/fillers which are cheap and easy to obtain and have good effect of removing the radial flow sewage, the organic pollutants in the water are ecologically restored by utilizing the filtering and adsorbing principles, the sewage flows out from top to bottom, and the function of each filter layer of the filter bed 4 can be exerted.
On the basis of the technical scheme, further preferably, the filter bed 4 is formed by a height ratio of (5-9): (3-7): (1-5): (1-3) raw soil 7, river sand 8, zeolite 9 and coconut coir 10; wherein, any one or more of pinus alternatus, canna or arundo donax can be planted on the raw soil 7.
Wherein, the original soil 7 is used for keeping the original land form and the nutrient components of the land and is convenient for planting plants; the river sand 8, the zeolite 9 and the coconut husk 10 are cheap and easily available substances and have no pollution to the environment, and the medium soil prepared from the coconut husk 10, the river sand 8, the raw soil 7 and a water retention medium according to different mixing ratios can effectively retain rainwater, ensure the normal growth of plants and remove rainwater runoff pollutants. According to past project experience, the height ratio is selected to be (5-9): (3-7): (1-5): the raw soil 7, river sand 8, zeolite 9 and coconut coir 10 of (1-3) are used as the filter bed 4, and have good filtering effect on pollutants in water. The height ratio can be adaptively adjusted according to the water quality condition of specific treated sewage, such as the height ratio is 5: 3: 1: 1 of raw soil 7, river sand 8, zeolite 9 and coconut coir 10, or the height ratio of 9: 7: 5: 3, raw soil 7, river sand 8, zeolite 9 and coconut coir 10, or the height ratio of 7: 5: 3: 2, raw soil 7, river sand 8, zeolite 9 and coconut coir 10, wherein the height ratio is 7: 5: 3: 2, raw soil 7, river sand 8, zeolite 9 and coconut coir 10 are the optimal scheme.
On the basis of the preferable technical scheme, a first pipeline with the length of 8-12m is arranged between the filter bed 4 and the natural contact oxidation pond 5, and water-resistant plants and/or deep-rooted plants are planted above the first pipeline.
The roots of the deep-rooted plants have the functions of fixation, support, absorption, conduction, storage and the like, can store and absorb nutrient substances, can further purify unpurified pollutants in the biochemical pool 3, and is very friendly to ecology. And a water-rich environment is arranged above the first pipeline, so that the water-resistant plants can be planted in the water-rich environment. The lengths of the first pipelines are 8m, 10m, 11m, 12m and the like, and can be selected according to actual needs.
Specifically, any one or more of camphor tree, ash tree, linden tree, ash tree, metasequoia, salix fortunei, salix cheilowii, quercus acutissima, pinus sylvestris, sundew, vetiver grass, sophora japonica, elm, mulberry or juniper pennywort is planted above the first pipeline, and the distance between any two adjacent plants is any number value between 5 and 7m, and is preferably 6m
On the basis of the above preferred technical scheme, more preferably, a flexible biological carrier, aquatic plants and emergent aquatic plants are arranged or planted in the natural contact oxidation pond 5; wherein the aquatic plants comprise any one or more of algae, watermifoil, delavay copper, water lily, canna, iris or calamus; the emergent aquatic plant comprises one or more of folium Phragmitis, herba Typhae, corm Eleocharitis, flos Nelumbinis, herba Oenanthes Javanicae, flos Chrysanthemi, flos Nelumbinis or rhizoma Typhae.
The natural contact oxidation pond 5 is a wetland composed of a flexible biological carrier, a floating body or a floating bed, aquatic plants and emergent aquatic plants, sewage and sludge are controllably dosed on the artificially constructed natural contact oxidation pond 5, in the process of flowing along a certain direction, mainly utilizes the physical, chemical and biological synergistic action of soil, artificial medium, plant and microorganism to treat sewage and sludge, it can be absorbed, retained, filtered, oxidized, reduced, precipitated, decomposed by microorganism, transformed, shielded by plant, accumulated in residue, absorbed by evaporated water and nutrient and acted by various animals, on the premise of promoting the virtuous cycle of pollutants in the sewage, the production potential of resources is fully exerted, the re-pollution of the environment is prevented, and the best effect of sewage treatment and resource utilization is obtained. In the present invention, the aquatic plants planted in the natural contact oxidation pond 5 include one or more of algae, watermifoil, pennywort, water lily, canna, iris or calamus, and the emergent aquatic plants include one or more of reed, cattail, water chestnut, lotus, cress, wild rice stem, lotus or cattail.
On the basis of the technical scheme, further, a second pipeline with the length of 40-60m is arranged between the natural contact oxidation pond 5 and the self-cleaning pond 6, and any one or more of pumpkin, towel gourd, white gourd, gourd or green bean is planted above the second pipeline.
After being treated by the combined biochemical pond and the natural contact oxidation pond 5, the water body is gradually purified, the pollutants are reduced, and the pollution probability is extremely low. At this time, vegetables having economic benefits can be planted above the second pipeline between the natural contact oxidation pond 5 and the self-cleaning pond 6, and crops can also be used as producers of pond ecosystems and can also be replaced by trees if necessary. The lengths of the second pipelines are 40m, 50m, 55m, 60m and the like, and can be selected according to actual needs.
In order to improve the ecological restoration effect of the self-purification pond 6, in particular, emergent aquatic plants, tape grass, algae, shellfish, shrimps and poultry are planted or cultured in the self-purification pond 6; the algae comprises one or two of small arrowhead algae or small ball algae; the shellfish fish and shrimp comprise one or more of freshwater shrimp, periwinkle snail, freshwater mussel, snakehead or grass carp. Further forming an aquatic ecosystem combining algae microorganisms and aquaculture, wherein emergent aquatic plants comprise reed, cattail and the like and are planted in the positions of 2m along the bank with the slope surfaces vertical to 1 m; photosynthesis of evergreen tape grass cultivated in the self-purification pond 6 can increase dissolved oxygen in water and enrich species of an ecological system, and algae mainly comprises one or two of small arrowhead algae or chlorella; the shellfish fish and shrimp mainly comprise one or more of freshwater shrimp, periwinkle snail, freshwater mussel, snakehead or grass carp.
In a specific embodiment of the present invention, a regulating pump is disposed on a pipeline connecting the grid tank 1 and the regulating tank 2.
The pipeline of the grid pond 1 communicated with the adjusting pond 2 is provided with an adjusting pump for adjusting the water quantity in the water using peak period, thereby ensuring the stability of the water quality under a certain hydraulic retention time,
on the basis of the above technical solution, preferably, the effective volume ratio of the grid tank 1, the adjusting tank 2, the biochemical tank 3 and the filter bed 4 is (4-8): (30-40): (60-80): (25-40); the effective area ratio of the natural contact oxidation pond 5 to the self-cleaning pond 6 is (300-): (1400-1800).
Here, the effective volume ratio of the grating tank 1, the adjusting tank 2, the biochemical tank 3 and the filter bed 4 may be 4: 30: 60: 25, and may also be 8: 40: 80: 40, and can also be 6: 35: 70: 35; the effective area ratio of the natural contact oxidation pond 5 to the self-cleaning pond 6 is 300: 1400, and may also be 450: 1800 and can also be 370: 1600.
Taking 1000 people in rural area as an example, the average water consumption is 150L/(people d), and the designed sewage flow is 150m3And d. The sewage treatment system in the preferred technical scheme is used for treating the sewage.
Firstly, sewage enters a grid pond 1 through a pipeline, large pollutants such as plastic bags, fallen leaves and the like in the sewage are removed, the smooth proceeding of subsequent treatment facilities is ensured, and the water conservancy residence time is 0.91 h;
sewage enters the adjusting tank 2 after passing through the grid tank 1, an adjusting pump is arranged between pipelines of the grid tank 1 and the adjusting tank 2, the stability of water quality in the process is maintained under the condition that the hydraulic retention time is 5.72 hours, and sludge generated in the process can be used as fertilizer for plants in a peripheral greening or self-cleaning pond 6;
the sewage in the adjusting tank 2 enters the biochemical tank 3 from the first overflow port, the hydraulic retention time is 10.99h, and the organic matters in the sewage are decomposed into substances such as water, carbon dioxide and the like by anaerobic microorganisms;
the sewage treated by the biochemical pool 3 enters the filter bed 4 from the second overflow port, and the sewage sequentially passes through the filter bed with the height ratio of 7 by the action of gravity: 5: 3: 2, filtering and adsorbing raw soil 7, river sand 8, zeolite 9 and coconut coir 10, wherein the hydraulic retention time is 5.27h, further removing organic pollutants in water, and emergent aquatic plants such as windmill grass, canna indica and floral leaf arundo which have strong adaptability, developed root system and good absorption effect on nutrient salts such as nitrogen and phosphorus are planted at the upper end of the raw soil 7, so that a better environment-friendly effect and a better landscape effect can be achieved;
the sewage is treated by the filter bed 4 to reach better water quality, at the moment, the sewage is introduced into a natural contact oxidation pond 5 planted with the following algae, the watermifoil, the pennisetum purpureum, the aloesless, the water lily, the canna, the iris and the calamus at the bottom of the pond, emergent aquatic plants such as reed, the cattail and the like are planted at 2m positions along the 1m vertical edge of two sloping surfaces of the natural contact oxidation pond 5, and the effective area of the natural contact oxidation pond 5 is 376m2Surface hydraulic load of 0.39m3/ (m2D), further solving the problem of seasonal difference of denitrification capability commonly existing in the constructed wetland system, and realizing the design requirements of low cost, light maintenance and high efficiency;
a second pipeline of 30m is arranged between the natural contact oxidation pond 5 and the self-cleaning pond 6, and crops with economic benefits such as pumpkins, loofah, white gourds, balsam pears and the like are planted above the second pipeline;
sewage enters the effective area of 1600m through the second pipeline2Surface hydraulic load of 0.09m3/ (m2D) the self-purification pond 6, the photosynthesis of the evergreen tape grass cultivated in the self-purification pond 6 can increase the dissolved oxygen in water, and the variety of the ecological system can be enriched; beneficial bacteria microorganisms of small arrowhead algae and chlorella are added into the self-cleaning pond 6, shellfish and fish such as freshwater shrimps, periwinkle snails, freshwater mussels, snakeheads and grass carps are cultured in the self-cleaning pond 6, and then a microorganism and algae symbiont and an aquatic ecosystem combined with aquaculture are formed.
After the sewage treatment system is used for treating rural domestic wastewater for a period of time, the problem of overground sewage is solved, and ecological benefits, landscape benefits and economic benefits are provided for villagers.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and such modifications and substitutions do not depart from the spirit and scope of the present invention as defined by the appended claims.
Claims (10)
1. A sewage treatment system is characterized by comprising a combined biochemical pond, a natural contact oxidation pond (5) and a self-purification pond (6) which are communicated in sequence;
the combined biochemical pond comprises a grid pond (1), an adjusting pond (2), a biochemical pond (3) and a filter bed (4) which are sequentially communicated, and the filter bed (4) is communicated with the natural contact oxidation pond (5).
2. The treatment system according to claim 1, wherein a first partition plate is arranged between the regulating tank (2) and the biochemical tank (3), and a first overflow port is arranged above the first partition plate;
a second partition plate is arranged between the biochemical pool (3) and the filter bed (4), and a second overflow port is arranged above the second partition plate;
a third clapboard is arranged between the filter bed (4) and the natural contact oxidation pond (5), and a third overflow port is arranged below the third clapboard.
3. The treatment system according to claim 1, wherein, from top to bottom, the filter bed (4) is made up of a height ratio (5-9): (3-7): (1-5): (1-3) raw soil (7), river sand (8), zeolite (9) and coconut coir (10);
wherein, any one or more of pinus alternatus, canna or arundo donax can be planted on the raw soil (7).
4. The treatment system according to claim 1, wherein a first pipe of length 8-12m is arranged between the filter bed (4) and the natural contact oxidation pond (5), and water-resistant plants and/or deep-rooted plants are planted above the first pipe.
5. The treatment system of claim 4, wherein any one or more of camphor tree, ash tree, basswood, ash tree, metasequoia, salix cheilowii, quercus acutissima, pinus densiflora, sundew, vetiver, sophora japonica, elm, mulberry, or sabina vulgaris is planted above the first pipe, and a distance between any adjacent plants is 5-7 m.
6. The treatment system according to claim 1, characterized in that flexible biological carriers, aquatic plants and emergent aquatic plants are arranged or planted in the natural contact oxidation pond (5);
wherein the aquatic plant comprises one or more of algae, watermifoil, copper coin, water lily, canna, iris or calamus;
the emergent aquatic plant comprises one or more of folium Phragmitis, herba Typhae, corm Eleocharitis, flos Nelumbinis, herba Oenanthes Javanicae, flos Chrysanthemi, flos Nelumbinis or rhizoma Typhae.
7. The treatment system according to claim 1, wherein a second pipeline with the length of 40-60m is arranged between the natural contact oxidation pond (5) and the self-cleaning pond (6), and any one or more of pumpkin, towel gourd, white gourd, gourd or green bean is planted above the second pipeline.
8. The treatment system according to claim 1, characterized in that emergent aquatic plants, tape grass, algae, shellfish, shrimps and birds are planted or cultivated in the self-cleaning pond (6);
the algae comprises one or two of small arrowhead algae or chlorella;
the shellfish fish and shrimp comprise one or more of freshwater shrimp, periwinkle snail, freshwater mussel, snakehead or grass carp.
9. The treatment system according to claim 1, wherein a conditioning pump is arranged on a pipeline of the grid tank (1) communicated with the conditioning tank (2).
10. The treatment system according to claim 1, wherein the effective volume ratio of the grid basin (1), the conditioning basin (2), the biochemical basin (3) and the filter bed (4) is (4-8): (30-40): (60-80): (25-40);
the effective area ratio of the natural contact oxidation pond (5) to the self-cleaning pond (6) is (300- & ltSUB & gt 450-): (1400-1800).
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| CN202111145120.7A CN113772894A (en) | 2021-09-28 | 2021-09-28 | Sewage treatment system |
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| CN202111145120.7A CN113772894A (en) | 2021-09-28 | 2021-09-28 | Sewage treatment system |
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|---|---|---|---|---|
| FR2876047A1 (en) * | 2004-09-16 | 2006-04-07 | Phytorestore Soc Par Actions S | Procedure for removing pollutants from waste water, air or soil uses planted filter bed which is watered periodically to provide anaerobic and aerobic phases |
| CN101948214A (en) * | 2010-08-31 | 2011-01-19 | 浙江博世华环保科技有限公司 | Ecological greenbelt treatment process and system for treating rural domestic sewage |
| CN204981491U (en) * | 2015-07-16 | 2016-01-20 | 三达水（北京）科技有限公司 | Rural sewage treatment plant |
| CN113136920A (en) * | 2021-04-23 | 2021-07-20 | 北京中铁生态环境设计院有限公司 | Rainwater collection system |
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2021
- 2021-09-28 CN CN202111145120.7A patent/CN113772894A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2876047A1 (en) * | 2004-09-16 | 2006-04-07 | Phytorestore Soc Par Actions S | Procedure for removing pollutants from waste water, air or soil uses planted filter bed which is watered periodically to provide anaerobic and aerobic phases |
| CN101948214A (en) * | 2010-08-31 | 2011-01-19 | 浙江博世华环保科技有限公司 | Ecological greenbelt treatment process and system for treating rural domestic sewage |
| CN204981491U (en) * | 2015-07-16 | 2016-01-20 | 三达水（北京）科技有限公司 | Rural sewage treatment plant |
| CN113136920A (en) * | 2021-04-23 | 2021-07-20 | 北京中铁生态环境设计院有限公司 | Rainwater collection system |
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Application publication date: 20211210 |