CN107585868B - Water body deep purification system - Google Patents
Water body deep purification system Download PDFInfo
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- CN107585868B CN107585868B CN201710854958.0A CN201710854958A CN107585868B CN 107585868 B CN107585868 B CN 107585868B CN 201710854958 A CN201710854958 A CN 201710854958A CN 107585868 B CN107585868 B CN 107585868B
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Abstract
The invention discloses a water body deep purification system which comprises a natural contact oxidation pond and a submerged self-maintenance pond. The natural contact oxidation pond comprises a main pond and an auxiliary pond positioned at the downstream of the main pond, the main pond and the auxiliary pond are of an integrated pond body structure, and the designed water depth of the main pond is greater than that of the auxiliary pond; a water inlet pipe is arranged at the front section of the main pond close to the bottom of the pond, an aeration device is arranged in an upstream water inlet area, a ribbon type bionic biological filler is further distributed in the main pond, a porous floating type turbidity isolating curtain for isolating the main pond from the auxiliary pond is arranged at the position of the main pond close to the auxiliary pond, and the depth length of the floating type turbidity isolating curtain is greater than the depth of the auxiliary pond; a filter material layer is arranged at the bottom of the auxiliary pond; aquatic plants are planted in the main pond and the auxiliary pond; submerged plants are planted in the submerged self-supporting pond. This water deep purification system structure is simple relatively, and is with low costs, and difficult jam, can last stable carry out deep purification to water such as sewage or normal water and handle, and purification efficiency is high.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a water body deep purification system.
Background
An oxidation pond, also called a biological pond or a stabilization pond, is a general name of a facility for treating sewage by utilizing natural purification capacity. The purification process of the oxidation pond is similar to the self-purification process of natural water, and sewage is treated mainly by microorganisms, algae and plants growing in the pond. The oxidation pond is generally divided into an aerobic pond, a facultative pond, an anaerobic pond, an aeration pond and an aquatic plant pond, wherein the submerged plant pond is one of the aquatic plant ponds, and a submerged plant community is mainly configured in the pond. Because the purification efficiency is limited and the influence of climate is large, the common stabilization pond and the artificial wetland are combined and applied to the treatment of water bodies such as sewage or reclaimed water.
The artificial wetland is a unified body which is constructed and operated artificially, simulates a natural wetland, consists of saturated matrixes, plants, animals, microorganisms and the like, sewage and sludge are controlled and dosed to the artificially constructed wetland, and the sewage and the sludge are treated by mainly utilizing the physical, chemical and biological triple synergistic effects of soil, artificial media, plants and microorganisms in the process of flowing along a certain direction. The action mechanism of the plant nutrient solution comprises the actions of adsorption, detention, filtration, oxidation reduction, precipitation, microbial decomposition, transformation, plant shielding, residue accumulation, transpiration moisture and nutrient absorption and various animals. The constructed wetland improves the controllability and the engineering level of wastewater treatment of a wetland system, has the advantages of large impact load resistance, high pollution load, low operation cost and the like, and is an important water treatment technology in the field of environmental protection.
At present, a plurality of artificial wetland-stabilization pond combined ecosystems are developed in the industry to carry out treatment practice and research on polluted water bodies, different forms of artificial wetland and pond multi-stage combined processes are also widely developed, a certain effect is achieved on the purification effect of the polluted water bodies and the stability of the combined processes, and engineering practical experience and engineering data are accumulated. However, the artificial wetland has the defects of large occupied area, easy blockage, unstable later-period operation effect (the effect is rapidly reduced after 1 to 2 years of the conventional artificial wetland at present) and easy influence of climate, and the like, and the defects of low purification efficiency, low speed, large occupied area and the like of the conventional stabilization pond greatly limit the application of the stabilization pond and the artificial wetland technology in water treatment.
Disclosure of Invention
Therefore, a water body deep purification system with high purification efficiency, no blockage and continuous and stable effect is needed to be provided.
A water body deep purification system comprises a natural contact oxidation pond and a submerged self-maintenance pond;
the natural contact oxidation pond comprises a main pond and an auxiliary pond positioned at the downstream of the main pond, the main pond and the auxiliary pond are of an integrated pond body structure, and the designed water depth of the main pond is greater than that of the auxiliary pond; a water inlet pipe is arranged at the front section of the main pond close to the bottom of the pond, an aeration device is arranged in an upstream water inlet area, ribbon type bionic biological fillers are further distributed in the main pond, a porous floating type turbidity isolating curtain for isolating the main pond from the auxiliary pond is arranged at the position of the main pond close to the auxiliary pond, and the depth length of the floating type turbidity isolating curtain is greater than the depth of the auxiliary pond; a filter material layer is arranged at the bottom of the auxiliary pond; aquatic plants are planted in the main pond and the auxiliary pond;
the submerged self-supporting pond is used for receiving the effluent water from the auxiliary pond, and submerged plants are planted in the submerged self-supporting pond.
In one embodiment, the design water depth of the main pond is 2.5m-3.0m, the length-width ratio is not less than 1:1 and not more than 3: 1; the design water depth of the auxiliary pond is 0.1-0.6 m, and the length-width ratio is not less than 1:1 and not more than 3: 1; the water area ratio of the main pond to the auxiliary pond is 1-3: 1;
the submerged containment pond is provided with a pollution-resistant area and a containment area positioned at the downstream of the pollution-resistant area, the water depth of the pollution-resistant area is 1.5-2.5 m, the water depth of the containment area is 1.2-1.5 m, and the water area ratio of the pollution-resistant area to the containment area is 1: 1-2;
the area ratio of the natural contact oxidation pond to the submerged self-supporting pond is 1: 2-3.
In one embodiment, the water inlet pipe is provided with a plurality of water outlets, and the water outlets of the water inlet pipe are 0.2-0.4 m away from the bottom of the main pond;
the aeration coverage area of the aeration device accounts for 8-12% of the water area of the main pond.
In one embodiment, the ribbon-type bionic biological filler is provided with a plurality of filler units, each filler unit comprises a plurality of ribbon-type fillers, the two ends of each ribbon-type filler are respectively fixed on two long ropes, the distance between every two adjacent ribbon-type fillers on each filler unit is 10cm-20cm, and the distance between every two adjacent ribbon-type fillers along the water flow direction is 0.3m-0.5 m; the bottom end of the ribbon type bionic biological filler is 0.4-0.6 m away from the bottom of the main pond, and the top end of the ribbon type bionic biological filler is 0.2-0.4 m away from the water surface; the arrangement area of the ribbon bionic biological filler accounts for 14-21% of the area of the water area of the main pond.
In one embodiment, the mesh density of the floating turbid separating curtain is 30 meshes, and the depth is 1.0m-1.5 m.
In one embodiment, the main pond is provided with a sand basin or a sand sinking well; and/or
The effluent of the auxiliary pond is overflow effluent at one side or the periphery.
In one embodiment, the main pond and the auxiliary pond are provided with emergent aquatic plants and/or floating plants with developed root systems in the range of 0.5-1.0 m of the shoreline water area; floating plants with developed root systems are modularly configured in the inner subarea of the main pond, and the floating plants with developed root systems of all the subarea modules account for 75-85% of the area of the water area of the main pond;
and emergent aquatic plants and/or floating plants with developed root systems are arranged at the water outlet section of the auxiliary pond.
In one embodiment, the filter material layer is a limestone and coral sand mixed filter material layer with the thickness of 0.3-0.5 m, and the particle size of a filter material in the filter material layer is 10-20 mm.
In one embodiment, emergent aquatic plants and/or floating plants with developed root systems are arranged in the submerged self-supporting pond in the range of 0.5-1.0 m of the shoreline water area;
the stain resistant area is provided with stain resistant seeds and submerged plants with strong absorption seeds, the configuration area accounts for 30-50% of the water area of the stain resistant area, and the configuration density is 75 strains/m280 strains/m2；
The conservation area is provided with evergreen dwarf submerged plants in four seasons, the configuration area accounts for 50-70% of the water area of the conservation area, and the configuration density is 100 plants/m 2120 strains/m2。
In one embodiment, aquatic animals are also thrown in the natural contact oxidation pond and/or the submerged self-maintenance pond.
The water deep purification system is relatively simple in structure, low in cost, not easy to block, capable of continuously and stably carrying out deep purification treatment on water such as sewage or reclaimed water and high in purification efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a natural contact oxidation pond in a deep water purification system according to an embodiment;
fig. 2 is a schematic structural view of a submerged culture pond in the water body deep purification system according to an embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, a system for deep purification of a water body according to an embodiment includes a natural contact oxidation pond 100 and a submerged culvert 200.
The natural contact oxidation pond 100 includes a main pond 110 and a sub-pond 120 located downstream of the main pond 110. The main pond 110 and the auxiliary pond 120 are of an integrated pond body structure, namely the main pond 110 and the auxiliary pond 120 are of the same pond body without any earth ridge or water-isolating weir and other structures. The design water depth of the main pond 110 is greater than that of the auxiliary pond 120. In a particular embodiment, the design water depth of the main lagoon 110 is 2.5m to 3.0m, and the aspect ratio is not less than 1:1 and not more than 3:1, preferably less than 3: 1. The design water depth of the secondary pond 120 is 0.1m to 0.6m, and the aspect ratio is not less than 1:1 and not more than 3:1, preferably less than 3: 1. The water area ratio of the main pond 110 to the auxiliary pond 120 is 1-3: 1.
The bottom of the main pond 110 can be soft or hard, and soft bottom is preferred. The bottom of the secondary pond 120 is provided with a filter material layer 122. In a specific embodiment, the filter layer 122 is a limestone and coral sand mixed filter layer, wherein the particle size of the filter material is 10mm-20mm, and the thickness of the filter layer 122 can be, but is not limited to, 0.3m-0.5m (the designed water depth of the secondary pond 120 is the depth without the filter layer 122).
The main pond 110 is provided with a water inlet pipe 112 at a front section near the bottom of the pond. In a specific embodiment, the water inlet pipe 112 has a plurality of water outlets, such as 2 or 3, to distribute water uniformly on one side of the main pond 110. The outlet of the water inlet pipe 112 is 0.2m to 0.4m, preferably 0.3m, from the bottom of the main pond 110. Further, in one embodiment, the main pond 110 is provided with a sand basin or a sand trap to effectively remove sand. The sand basin or the sand trap can be specifically designed according to the actual water inflow and the comprehensive sand cleaning amount evaluation. The effluent of the secondary pond 120 is a unilateral or peripheral stating step overflow effluent.
The main lagoon 110 is provided with an aeration device 114 in the upstream intake zone. In one embodiment, the aeration device 114 can be made of a perforated hose, or can be replaced by a membrane aeration disc or an underwater jet oxygen-increasing oxygenation device in the current municipal sewage treatment plant. The aeration device 114 is used for aeration covering area accounting for 8-12% of the water area of the main pond 110, and preferably accounting for 10% of the water area of the main pond 110. The aeration device 114 can be operated intermittently, can be set to operate for 2-4 h every day, and can also be used for properly reducing or increasing the aeration operation time according to factors such as water quality change, air temperature change and the like.
Ribbon-type bionic biological fillers 116 are also distributed in the main pond 110. The ribbon bionic biological filler 116 is a biofilm-forming filler, can not be blocked and has good purification effect. In one particular embodiment, the banderol biomimetic biofiller 116 has a plurality of filler units. A plurality of packing units are arranged in a partitioned modular manner in the main pond 110. Each packing element includes a plurality of strip-like packings 1164 having both ends fixed to two long ropes 1162, respectively. The assembled packing units are arranged perpendicular to the water flow direction. The length of the tape filler 1164 may be, but is not limited to, 2.0m-2.5m and the width may be, but is not limited to, 8 mm. The distance between adjacent strip-shaped fillers 1164 on each filler unit is 10cm-20cm, and the distance between the front filler unit and the rear filler unit along the water flow direction is 0.3m-0.5 m. The bottom end of the ribbon-type bionic biological filler 116 is preferably 0.4m to 0.6m, preferably 0.5m, away from the bottom of the main pond 110, and the top end of the ribbon-type bionic biological filler is preferably 0.2m to 0.4m, preferably 0.3m, away from the water surface. The arrangement area of the ribbon-type bionic biological filler 116 accounts for 14 to 21 percent of the water area of the main pond 110.
The main pond 110 is provided with a porous floating turbidity-isolating curtain 118 that isolates the main pond 110 from the sub-pond 120 at a position close to the sub-pond 120. The floating turbidity isolating curtain 118 can retain floating plants and the like, but water can still flow. The depth length of the floating type turbid separating curtain 118 is larger than the depth of the auxiliary pond 120, the water level rises during rainfall, and the floating type turbid separating curtain 118 can still play a role in retention along with the change of the water level. In one embodiment, the mesh density of the floating turbid separating curtain is 30 meshes, and the depth is 1.0m-1.5 m. The floating type turbid separating curtain 118 is preferably made of a soft material such as fiber.
Further, in the present embodiment, aquatic plants are planted in both the main pond 110 and the sub-pond 120. In a specific embodiment, the main pond 110 and the auxiliary pond 120 are configured with the shoreline plants 102 in the shoreline water area range of 0.5m to 1.0 m. The shoreline plant 102 may be an emerging plant and/or a floating plant with a developed root system. Wherein the floating plant with developed root system can be, but not limited to, pennisetum, watermifoil, water poppy or water peanut, etc. Further, main pond plants 111 are modularly configured in the main pond 110 in a partitioning mode. The main pond plant 111 can be the floating plant with a developed root system, is pistia stratiotes or watermifoil and the like at first, and can be matched with the pennisetum purpureum and the hydroponic celery with a developed root system and the like. The main pond plants 111 account for 75% to 85%, preferably 80%, of the water area of the main pond 110. Further, the secondary pond 120 is configured with a watery section plant 124 in the watery section. The watery segment 124 can be the emergent aquatic plants described above and/or floating plants with developed root systems. The water outlet section plant 124 accounts for 45-55%, preferably 50% of the area of the secondary pond 120.
In addition, after the main pond 110 and the auxiliary pond 120 are constructed, aquatic animals can be thrown in the operation period of 1-2 months. The aquatic animal may be, but is not limited to, a benthic animal, a filter fish, or an inland carnivorous fish, and the like.
The submerged containment pond 200 is configured to receive effluent from the secondary pond 120, such as overflow effluent from the secondary pond 120. The effluent form of the submerged culvert 200 can be various, such as effluent overflow from an effluent well.
In a particular embodiment, the submerged containment pond 200 is preferably a soft bottom. More specifically, the submerged containment pond 200 has a containment zone 210 and a containment zone 220 located downstream of the containment zone 210. The water depth of the stain resistant area 210 is 1.5m-2.5m, the water depth of the containment area 220 is 1.2m-1.5m, and the water area ratio of the stain resistant area 210 to the containment area 220 is 1: 1-2. The area ratio of the submerged conserving pond 200 to the natural contact oxidation pond 100 is 2-3: 1.
Submerged plants are planted in the submerged culvert 200. In a specific embodiment, the submerged containment pond 200 is provided with a shoreline plant 202 in a shoreline water area ranging from 0.5m to 1.0 m. The shoreline plant 202 may be an emerging plant and/or a floating plant with a developed root system. The floating plant with developed root system can be, but is not limited to, pennisetum, watermifoil, water poppy or water peanut, etc.
More specifically, the soil-resistant area 210 is configured with submerged plants 212 resistant to soil seeds and strongly absorbed seeds, the configuration area accounts for 30% -50% of the water area of the soil-resistant area 210, and the configuration density is 75 plants/m280 strains/m2. The submerged plant 212 resistant to the stain and the strong absorbate may be, but not limited to, such as hydrilla verticillata, curly pondweed, hornwort, watermifoil, eyeweed, and the like. The conservation area 220 is provided with a submerged plant 222 of evergreen dwarf variety in four seasons, the configuration area accounts for 50-70% of the water area of the conservation area 222, and the configuration density is 100 plants/m 2120 strains/m2. The evergreen dwarf species of submerged plant 222 may be, but is not limited to, modified dwarf tape grass and the like.
In addition, after the submerged self-supporting pond 200 is constructed, aquatic animals can be thrown in the pond within 1-2 months of operation. The aquatic animal may be, but is not limited to, a benthic animal, a filter fish, or an inland carnivorous fish, and the like.
The purification principle and effect of the water body deep purification system are detailed as follows:
1. the system is simple and efficient: water inlet → a multifunctional natural contact oxidation pond 100 → a submerged conserving pond 200 → water outlet, which can save the processes of a grit chamber, a sedimentation tank, an adjusting tank and the like, realize the strong purification of sewage, and the main index of the water outlet can reach the first grade B standard in discharge standard of pollutants for municipal wastewater treatment plants to the surface water environmental quality standard (GB3838-2002) III standard (except TN);
2. settling sand and sediment by natural gravity, adsorbing and intercepting suspended matters and particles and ecologically promoting sedimentation by the non-blocking type ribbon-type bionic biological filler 116 and a developed root system of plants, and effectively removing particles, oil films, SS, flocculating constituents, colloids and the like in sewage;
3. creating a plug flow system, wherein the oxygen state of the water body is in an aerobic-facultative-anaerobic-aerobic-strong-oxygen state; wherein, the front section of the artificial oxygenation creating system is in an aerobic state; the degradation of the intermediate nutrients and oxygenates in the main lagoon 110 consumes large amounts of oxygen, resulting in facultative (DO between 0.5-2.0 mg/L) and anaerobic conditions (DO between 0.2-0.5 mg/L); the oxygen enrichment of the air and the photosynthesis and oxygen production of the plants lead the side pond 120 to be in an aerobic state (DO is more than or equal to 2.0 mg/L); the submerged plants in the submerged conserving pond 200 can produce oxygen through high-efficiency photosynthesis, so that DO in the water body can reach 5.0-14.0 mg/L; the multifunctional natural contact cultivation pond 100 creates an anaerobic zone, a facultative zone and an aerobic zone from bottom to top in sequence, comprehensively and effectively realizes the degradation/conversion of oxygen consumption matters (organic matters and the like) and nutrients (N, P and the like) of the water body;
4. the front section of the multifunctional natural contact cultivation pond 100 is provided with artificial oxygenation: intermittent operation or selective operation can be taken as an auxiliary measure to promote the improvement of the purification efficiency of the system, particularly in the season of temperature reduction in winter;
5. the water surface of the main pond 110 of the multifunctional natural contact cultivation pond 100 is provided with a floating plant with a developed root system: nutrient salts in water (especially ammonium nitrogen generated in an anaerobic zone of the system) are directly assimilated and absorbed, and photosynthesis supplies oxygen to the surface layer of the water body; adsorbing and ecologically intercepting pollutants, particles, oil films and the like in a water body by a developed root system; the developed root system is attached to pollutants in the biomembrane purified water; the water surface floating plants cover to build a light shading environment, so that the breeding of blue-green algae in the multifunctional oxidation pond is effectively inhibited; the comprehensive effects of the alternating mode of anaerobic zone-facultative zone-aerobic zone and the developed floating plants on the root system of the water surface are beneficial to slowing down the generation of peculiar smell in the water body;
6. the main pond 110 of the multifunctional natural contact cultivation pond 100 is provided with non-blocking ribbon type bionic biological fillers 116: effectively adsorb and intercept particles, floccules, colloids and the like, and effectively control the turbidity of the effluent; a large amount of biological films (the sludge concentration on the filler is 1.0-3.5 kg MLSS/m2) are loaded on the surface of the filler, so that the microbial purification efficiency of the system is greatly enhanced; under the conditions of water flow and rainfall, the banderol type bionic biological filler 116 swings along with the water flow, so that the falling and the updating of the biological film on the surface of the banderol can be promoted, the biological film on the surface of the banderol is prevented from aging and blocking, and the purification efficiency of the biological film is ensured for a long time;
7. a floating turbid separating curtain 118 is arranged between the main pond 110 and the auxiliary pond 120 of the multifunctional natural contact cultivation pond 100: debris, branch-broken weeds and floating impurities in the main pond 110 are further effectively filtered and retained without influencing the flow of water and are collected into the auxiliary pond 120;
8. the depth of the filter material layer 122 in the auxiliary pond 120 of the multifunctional natural contact cultivation pond 100 is shallow, so that the oxygen enrichment of the effluent air is effectively increased; through the mixed filter material of limestone and coral sand, phosphate in the water body can be directly and effectively degraded; meanwhile, the pores and the surface layer of the filter material are loaded with the biological membrane, so that pollutants can be further explained; in addition, the coral sand can play a role in adjusting the pH value of effluent;
9. the outlet section of the auxiliary pond 120 is provided with emergent aquatic plants, preferred varieties such as pennisetum, watermifoil, water lily, poppy and alternanthera philoxeroides, and the like, so that the purification and ecological interception efficiency of the plants can be further exerted, the concentration of suspended matters and algae in the outlet water can be controlled, the DO of the outlet water can be improved, and the quality of the outlet water can be guaranteed.
10. The submerged self-maintenance pond 200 comprehensively achieves the effect targets of deep water quality purification, photosynthesis oxygen production, stable ecological system, perfect water ecological system, ecological disinfection, beautiful landscape effect and the like by matching with the pollution-resistant submerged plant community and the four-level evergreen dwarf variety submerged plant community and constructing an ecological food chain system.
The water body deep purification system is relatively simple in structure, free of filler with low porosity and complex pipe networks, cheaper in construction cost than that of an undercurrent wetland or a vertical current wetland, simple and convenient in pipe cultivation and low in cost; the hydraulic head loss in the system is small, and the height difference of the water level of inlet and outlet water exceeds 0.3m-0.5m, so that unpowered water inlet or system water drop oxygenation can be realized; the biological filler is not easy to block, has long service life, is hardened in matrix, can guarantee low-temperature climate change, and can continuously and stably carry out deep purification treatment on water bodies such as sewage or reclaimed water; the multifunctional natural contact oxidation pond 100 is designed to have hydraulic retention time of 5-7 d, a ton water land occupation ratio of 1: 3-5, and high purification efficiency; the system is in an integral plug flow state, and the water body oxygen state is in an aerobic-facultative-anaerobic-aerobic-strong-oxygen state, so that the system is favorable for system stability and water body nitrogen and phosphorus removal.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A water body deep purification system is characterized by comprising a natural contact oxidation pond and a submerged self-maintenance pond;
the natural contact oxidation pond comprises a main pond and an auxiliary pond positioned at the downstream of the main pond, the main pond and the auxiliary pond are of an integrated pond body structure, and the designed water depth of the main pond is greater than that of the auxiliary pond; a water inlet pipe is arranged at the front section of the main pond close to the bottom of the pond, an aeration device is arranged in an upstream water inlet area, ribbon type bionic biological fillers are further distributed in the main pond, a porous floating type turbidity isolating curtain for isolating the main pond from the auxiliary pond is arranged at the position of the main pond close to the auxiliary pond, and the depth length of the floating type turbidity isolating curtain is greater than the depth of the auxiliary pond; a filter material layer is arranged at the bottom of the auxiliary pond; aquatic plants are planted in the main pond and the auxiliary pond; the designed water depth of the main pond is 2.5m-3.0m, and the designed water depth of the auxiliary pond is 0.1m-0.6 m;
the submerged containment pond is used for receiving effluent from the auxiliary pond, submerged plants are planted in the submerged containment pond, the submerged containment pond is provided with a pollution resistant area and a containment area located at the downstream of the pollution resistant area, the water depth of the pollution resistant area is 1.5m-2.5m, and the water depth of the containment area is 1.2m-1.5 m.
2. The water body depth purification system of claim 1, wherein the aspect ratio is not less than 1:1 and not more than 3: 1; an aspect ratio of not less than 1:1 and not more than 3: 1; the water area ratio of the main pond to the auxiliary pond is 1-3: 1;
the area ratio of the water areas of the stain resistant area and the self-contained area is 1: 1-2;
the area ratio of the natural contact oxidation pond to the submerged self-supporting pond is 1: 2-3.
3. The water body deep purification system of claim 1, wherein the water inlet pipe has a plurality of water outlets, and the water outlets of the water inlet pipe are 0.2m-0.4m away from the bottom of the main pond;
the aeration coverage area of the aeration device accounts for 8-12% of the water area of the main pond.
4. The water body deep purification system of claim 1, wherein the ribbon-type bionic biological filler is provided with a plurality of filler units, each filler unit comprises a plurality of ribbon-type fillers, the two ends of each ribbon-type filler are respectively fixed on two long ropes, the distance between the adjacent ribbon-type fillers on each filler unit is 10cm-20cm, and the distance between the front and the back of each filler unit along the water flow direction is 0.3m-0.5 m; the bottom end of the ribbon type bionic biological filler is 0.4-0.6 m away from the bottom of the main pond, and the top end of the ribbon type bionic biological filler is 0.2-0.4 m away from the water surface; the arrangement area of the ribbon bionic biological filler accounts for 14-21% of the area of the water area of the main pond.
5. The water body deep purification system of claim 1, wherein the mesh density of the floating type turbidity isolating curtain is 30 meshes, and the depth is 1.0m-1.5 m.
6. The water body deep purification system of claim 1, wherein the main pond is provided with a sand basin or a sand well; and/or
The effluent of the auxiliary pond is overflow effluent at one side or the periphery.
7. The water body deep purification system of claim 1, wherein the main pond and the auxiliary pond are provided with emergent aquatic plants and/or floating plants with developed root systems in the range of 0.5m-1.0m of the shoreline water area; floating plants with developed root systems are modularly configured in the inner subarea of the main pond, and the floating plants with developed root systems of all the subarea modules account for 75-85% of the area of the water area of the main pond;
and emergent aquatic plants and/or floating plants with developed root systems are arranged at the water outlet section of the auxiliary pond.
8. The water body deep purification system of claim 1, wherein the filter material layer is a limestone and coral sand mixed filter material layer with the thickness of 0.3m-0.5m, and the particle size of the filter material in the filter material layer is 10mm-20 mm.
9. The deep water body purification system as claimed in any one of claims 1 to 8, wherein emergent aquatic plants and/or floating plants with developed root systems are arranged in the submerged self-sustaining pond within the range of 0.5m to 1.0m of the shore water area;
the stain resistant area is provided with stain resistant seeds and submerged plants with strong absorption seeds, the configuration area accounts for 30-50% of the water area of the stain resistant area, and the configuration density is 75 strains/m280 strains/m2；
The conservation area is provided with evergreen dwarf submerged plants in four seasons, the configuration area accounts for 50-70% of the water area of the conservation area, and the configuration density is 100 plants/m2120 strains/m2。
10. The deep water body purification system of any one of claims 1-8, wherein aquatic animals are also thrown into the natural contact oxidation pond and/or the submerged self-sustaining pond.
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| CN108552095B (en) * | 2018-03-15 | 2020-08-21 | 浙江省淡水水产研究所 | A kind of treatment method of safe water for raising seedlings |
| CN109775941A (en) * | 2019-03-26 | 2019-05-21 | 广州太和水生态科技有限公司 | Sewage lagoon and sewage ecological treatment system based on graphene photochemical catalytic oxidation |
| CN109912038A (en) * | 2019-03-28 | 2019-06-21 | 广州太和水生态科技有限公司 | Sewage natural processing system |
| CN110451648A (en) * | 2019-07-26 | 2019-11-15 | 中秉(山东)环境工程有限公司 | A kind of substrate enhanced type surface-flow sewage disposal system |
| CN113264640B (en) * | 2021-05-25 | 2025-04-29 | 新苏智汇环境技术(江苏)有限公司 | A composite ecological purification system and purification method for efficient nitrogen and phosphorus removal |
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