CN209338220U - A kind of sewage disposal system based on anaerobism-AO- combined artificial wetland - Google Patents
A kind of sewage disposal system based on anaerobism-AO- combined artificial wetland Download PDFInfo
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- CN209338220U CN209338220U CN201822029724.5U CN201822029724U CN209338220U CN 209338220 U CN209338220 U CN 209338220U CN 201822029724 U CN201822029724 U CN 201822029724U CN 209338220 U CN209338220 U CN 209338220U
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Abstract
The disclosure discloses a kind of sewage disposal system based on anaerobism-AO- combined artificial wetland, including anaerobic pond, anoxic pond, aerobic tank, sedimentation basin, ecological pond and artificial swamp.The disclosure is by increasing combined artificial wetland on the basis of traditional AO technique, construct the ecosystem of sewage treatment, utilize intergrowth of species, substance principle of recycling and regeneration and structure and orthofunction principle, promote the benign cycle of Pollutants in Wastewater matter, water body activity, control water pollution and degradation harmful substance can effectively be increased.
Description
Technical Field
The disclosure belongs to the field of sewage treatment, and particularly relates to a sewage treatment system based on an anaerobic-AO-composite artificial wetland.
Background
Along with the improvement of the rural living standard of China, the discharge of rural domestic sewage is continuously increased, the problem of water pollution is serious day by day, while sewage treatment facilities in vast rural areas of China fall behind, even a large amount of domestic sewage is directly discharged without being treated, the polluted water body and the surrounding ecological environment are seriously polluted, and the discharged sewage has the characteristics of large water quality and water quantity fluctuation, extensive discharge, increasingly complex components and the like. The rural population is relatively dispersed and independent, the population base is large, the scale is small, and the density is low, so according to the characteristics of rural population distribution, sewage discharge and water quality, the traditional rural domestic sewage treatment process is only suitable for treatment in general rural areas, and can not meet the requirements of gravity basins such as lakes, reservoirs, water sensitive zones, water ecosystem weak areas and the like with higher requirements on the effluent water quality, and further deep treatment is needed.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned deficiencies in the prior art, the present disclosure aims to provide a sewage treatment system based on an anaerobic-AO-composite artificial wetland, which can effectively remove organic matters, nitrogen and phosphorus in sewage by matching a traditional AO treatment process with the composite artificial wetland, and realize the standard discharge and recycle of sewage.
To achieve the above object, the technical solution of the present disclosure is described as follows:
an anaerobic-AO-composite constructed wetland based sewage treatment system comprising: the system comprises an anaerobic tank, an anoxic tank, an aerobic tank, a sedimentation tank, an ecological pond and an artificial wetland; wherein,
the output port of the anaerobic tank is connected with the input port of the anoxic tank;
the output port of the anoxic tank is connected with the input port of the aerobic tank;
the output port of the aerobic tank is connected with the input port of the sedimentation tank;
the output port of the sedimentation tank is connected with the input port of the ecological pond;
and the output port of the ecological pond is connected with the input port of the artificial wetland.
Preferably, any one of the following adsorbents is added into the anaerobic tank: activated carbon, mineral powder, fly ash and limestone.
Preferably, an artificial floating bed is arranged in the ecological pond.
Preferably, biological carbon fibers are hung at the bottom of the artificial floating bed.
Preferably, the artificial wetland is a surface flow wetland or a subsurface flow wetland.
Preferably, the substrate of the artificial wetland comprises any one of the following components: natural gravel, limestone and volcanic rock.
Compared with the prior art, the beneficial effect that this disclosure brought does:
1. the operation of the anaerobic stage is strengthened by adding the medicament, the microbial concentration and the system stability are improved, and the removal of organic matters is facilitated;
2. the composite artificial wetland can ensure the high efficiency and stability of the treatment system, and can increase the water activity and control the water pollution;
3. the method has the advantages of simple processing flow, low energy consumption and cost saving.
Drawings
Fig. 1 is a structural schematic diagram of a sewage treatment system based on an anaerobic-AO-composite constructed wetland of the present disclosure.
Detailed Description
The technical solution of the present disclosure is described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1, the present disclosure provides an anaerobic-AO-composite constructed wetland based sewage treatment system comprising: the system comprises an anaerobic tank, an anoxic tank, an aerobic tank, a sedimentation tank, an ecological pond and an artificial wetland; wherein the output port of the anaerobic tank is connected with the input port of the anoxic tank; the output port of the anoxic tank is connected with the input port of the aerobic tank; the output port of the aerobic tank is connected with the input port of the sedimentation tank; the output port of the sedimentation tank is connected with the input port of the ecological pond; and the output port of the ecological pond is connected with the input port of the artificial wetland.
The embodiment discloses a sewage treatment system based on an anaerobic-AO-composite constructed wetland, which can effectively degrade organic matters in sewage and remove nitrogen and phosphorus in the sewage.
The specific implementation process of the embodiment is as follows:
the sewage flows into the anaerobic tank, and one or more of active carbon, mineral powder, fly ash or limestone is added into the anaerobic tank, so that the microbial concentration and the system stability are improved, the removal of organic matters is facilitated, and partial BOD is removed through anaerobic decomposition for a certain time, so that partial nitrogen-containing compounds are converted into N2Releasing, wherein phosphorus is released by phosphorus accumulating microorganisms in the returned sludge; then the sewage flows into an anoxic tank, and nitrate which flows back through internal circulation in the aerobic tank is reduced into N by denitrifying bacteria2(ii) a Then the sewage flows into an aerobic tank, ammonia nitrogen is nitrified to generate nitrate, organic matters are degraded, microorganisms absorb phosphorus, and the phosphorus-rich sewage is discharged after precipitation, so that the effect of dephosphorization is achieved; the biochemical effluent is filtered by a sedimentation tank and flows into a composite artificial wetland, the composite artificial wetland consists of an ecological pond and an artificial wetland, and organic matters, nitrogen and phosphorus in the water body are deeply removed by utilizing the physical, chemical and biological synergistic reaction of plants, microorganisms and artificial media.
In another embodiment, any one of the following is added into the anaerobic tank: activated carbon, mineral powder, fly ash and limestone.
In the embodiment, the activated carbon contains a large number of micropores and has a huge specific surface area, so that the chromaticity and the odor can be effectively removed, and most of organic pollutants and certain inorganic matters in sewage can be removed; al contained in fly ash2O3Active components such as CaO, etc. can produce coordination compounds with fluorine in the sewage or produce colloid ions with flocculation on the fluorine, and also contains zeolite, mullite, carbon particles, silica gel, etc. and has inorganic ion exchange characteristic and adsorption decoloration function; the mineral powder has the characteristics of pore structure and high porosity, can retain suspended matters and organic matters in water, can fix phosphorus in water, and has a phosphorus removal effect; limestone can be used as a pH regulator, can precipitate metal ions in water, can remove impurities such as suspended matters and the like while removing the metal ions in the water, and has the functions of chemical precipitation dephosphorization and phosphorus adsorption.
In another embodiment, an artificial floating bed is arranged in the ecological pond.
In this embodiment, the artificial floating bed is based on aquatic plants, uses soilless culture technology, uses high molecular materials as carriers, and establishes an efficient artificial ecosystem by applying the symbiotic relationship among species and the principle of fully utilizing the water space ecological niche and the nutrient ecological niche, and has the effect of reducing the pollution load in the water.
In another embodiment, biological carbon fibers are hung at the bottom of the artificial floating bed.
In this embodiment, biological carbon fiber hangs in artifical floating bed below, has super large specific surface area, utilizes the biomembrane of adsorbing on the carbon fiber filler and the oxygen of aquatic to pass through biological oxidation, with the organic matter oxidative decomposition in the water, reaches the purification purpose.
In another embodiment, the artificial wetland is a surface flow wetland or a subsurface flow wetland.
In the embodiment, the wastewater in the surface flow wetland flows over the surface of the filler, and the degradation of most of organic matters is completed by microorganisms in the biological membrane of the plant stem base immersed in the wastewater; the subsurface flow wetland is an artificial landscape which takes hydrophilic plants as surface greening materials and sandstone soil as fillers and leads water to permeate and filter naturally. The two artificial wetlands can be selected according to specific conditions.
In another embodiment, the substrate of the artificial wetland comprises any one of the following components: natural gravel, limestone and volcanic rock.
In the embodiment, materials such as natural gravel, limestone and volcanic rock are used as the local composite artificial wetland matrix, so that the synergistic effect among air, water, the matrix, plants and microorganisms can be enhanced, and organic matters, nitrogen and phosphorus can be removed more efficiently.
The technical effects of the technical solution of the present disclosure will be further explained by experiments.
The water quality of the raw water of the sewage in a certain rural area in the suburb is as follows:
| item | CODcr | NH3-N | TN | TP |
| Content (mg/L) | 400 | 35 | 40 | 5 |
After the treatment of the technical scheme disclosed by the invention, the COD (chemical oxygen demand) of the effluent is less than or equal to 30mg/L, and NH3N is less than 10mg/L, TN is less than or equal to 10mg/L, TP is less than or equal to 0.2mg/L, and partial indexes of effluent quality can reach the IV class of the environmental quality standards of surface water.
According to the experiment, the technical scheme can effectively degrade organic matters in the sewage, and can effectively remove nitrogen and phosphorus in the sewage, so that the effluent quality reaches the standard.
The above description is only a preferred embodiment of the present disclosure and should not be interpreted as limiting the scope of the present disclosure, it should be noted that those skilled in the art can make various changes and modifications without departing from the spirit of the present disclosure, which falls within the protection scope of the present disclosure.
Claims (6)
1. An anaerobic-AO-composite constructed wetland based sewage treatment system comprising: the system comprises an anaerobic tank, an anoxic tank, an aerobic tank, a sedimentation tank, an ecological pond and an artificial wetland; wherein,
the output port of the anaerobic tank is connected with the input port of the anoxic tank;
the output port of the anoxic tank is connected with the input port of the aerobic tank;
the output port of the aerobic tank is connected with the input port of the sedimentation tank;
the output port of the sedimentation tank is connected with the input port of the ecological pond;
and the output port of the ecological pond is connected with the input port of the artificial wetland.
2. The sewage treatment system of claim 1, wherein any one of the following adsorbents is added to the anaerobic tank: activated carbon, mineral powder, fly ash and limestone.
3. The sewage treatment system of claim 1, wherein an artificial floating bed is arranged in the ecological pond.
4. The wastewater treatment system of claim 3, wherein the bottom of the artificial floating bed is suspended with biological carbon fibers.
5. The wastewater treatment system according to claim 1, wherein the artificial wetland is a surface flow wetland or a subsurface flow wetland.
6. The wastewater treatment system according to claim 5, wherein the substrate of the artificial wetland comprises any one of: natural gravel, limestone and volcanic rock.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111807611A (en) * | 2020-06-20 | 2020-10-23 | 山东三加环保新材料有限公司 | A2O process-based sewage nitrogen removal method |
| CN113912248A (en) * | 2021-10-12 | 2022-01-11 | 安徽省通源环境节能股份有限公司 | A composite process treatment system suitable for rural domestic sewage |
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2018
- 2018-12-04 CN CN201822029724.5U patent/CN209338220U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111807611A (en) * | 2020-06-20 | 2020-10-23 | 山东三加环保新材料有限公司 | A2O process-based sewage nitrogen removal method |
| CN113912248A (en) * | 2021-10-12 | 2022-01-11 | 安徽省通源环境节能股份有限公司 | A composite process treatment system suitable for rural domestic sewage |
| CN113912248B (en) * | 2021-10-12 | 2025-01-10 | 安徽省通源环境节能股份有限公司 | A composite process treatment system suitable for rural domestic sewage |
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