CN209193725U - A kind of combined-flow and more pool artificial marsh sewage treatment systems - Google Patents
A kind of combined-flow and more pool artificial marsh sewage treatment systems Download PDFInfo
- Publication number
- CN209193725U CN209193725U CN201820428694.2U CN201820428694U CN209193725U CN 209193725 U CN209193725 U CN 209193725U CN 201820428694 U CN201820428694 U CN 201820428694U CN 209193725 U CN209193725 U CN 209193725U
- Authority
- CN
- China
- Prior art keywords
- wetland
- pond
- layer
- flow
- stage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 137
- 230000003647 oxidation Effects 0.000 claims abstract description 71
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 71
- 238000001914 filtration Methods 0.000 claims abstract description 49
- 238000005273 aeration Methods 0.000 claims abstract description 39
- 238000004062 sedimentation Methods 0.000 claims description 55
- 241000196324 Embryophyta Species 0.000 claims description 48
- 239000000945 filler Substances 0.000 claims description 39
- 239000002245 particle Substances 0.000 claims description 34
- 238000012856 packing Methods 0.000 claims description 33
- 230000007704 transition Effects 0.000 claims description 22
- 230000014759 maintenance of location Effects 0.000 claims description 20
- 235000014676 Phragmites communis Nutrition 0.000 claims description 18
- 235000013339 cereals Nutrition 0.000 claims description 18
- 239000002131 composite material Substances 0.000 claims description 17
- 238000006213 oxygenation reaction Methods 0.000 claims description 17
- 229910021536 Zeolite Inorganic materials 0.000 claims description 16
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 16
- 239000010457 zeolite Substances 0.000 claims description 16
- 239000002689 soil Substances 0.000 claims description 15
- 241000233948 Typha Species 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- 239000011435 rock Substances 0.000 claims description 12
- 241000746966 Zizania Species 0.000 claims description 6
- 235000002636 Zizania aquatica Nutrition 0.000 claims description 6
- 244000273256 Phragmites communis Species 0.000 claims description 4
- 241000219991 Lythraceae Species 0.000 claims description 3
- 238000005276 aerator Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 9
- 239000011574 phosphorus Substances 0.000 abstract description 9
- 238000000746 purification Methods 0.000 abstract description 7
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 6
- 230000001376 precipitating effect Effects 0.000 abstract 4
- 230000013011 mating Effects 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 11
- 238000001556 precipitation Methods 0.000 description 8
- 238000005728 strengthening Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 235000005273 Canna coccinea Nutrition 0.000 description 1
- 240000008555 Canna flaccida Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 241001553290 Euphorbia antisyphilitica Species 0.000 description 1
- 235000004224 Typha angustifolia Nutrition 0.000 description 1
- 240000001398 Typha domingensis Species 0.000 description 1
- 241001518821 Typha orientalis Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229940088623 biologically active substance Drugs 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009342 intercropping Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 108700012359 toxins Proteins 0.000 description 1
Landscapes
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model discloses a kind of combined-flow and more pool artificial marsh sewage treatment systems, comprising: the more pool artificial swamp subsystems of two groups of combined-flows arranged side by side；Wherein, the more pool artificial swamp subsystems of single group combined-flow include: sequentially connected water inlet pipe, water inlet distribution well, the precipitating filtering pool, surface flow artificial marshland, first order oxidation pond, aeration aerating pond, primary vertical artificial wetland, second level oxidation pond, secondary vertical artificial wetland, third level oxidation pond, wet well and drainpipe；Boring aeration pipe is equipped in aeration aerating pond and I and II vertical subsurface flow wetland, each boring aeration pipe is connect through air hose with air blower.The system effectively improves the treatment effect to nitrogen, phosphorus in city domestic sewage, precipitating the filtering pool simultaneously has the function of reinforcing pretreatment precipitating and filtering, the oxidation pond of each mating setting of artificial swamp has the function of precipitating and aquatic plant purification, further increases removal efficiency.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, concretely relates to compound flows and many ponds constructed wetland sewage treatment system mainly is applicable to and handles high nitrogen, phosphorus municipal sewage treatment.
Background
The artificial wetland sewage treatment system adsorbs, absorbs and converts pollutants by means of the substrate, the microorganisms and the hygrophytes, so that suspended matters, organic pollutants, nitrogen, phosphorus and the like in sewage can be effectively removed; but also can effectively remove pathogenic microorganisms, heavy metals, algal toxins and other exogenous organismsA biologically active substance; at the same time, can absorb SO2、CO2And the like, play a role in purifying air.
The surface flow wetland and the subsurface flow wetland are two main types of artificial wetland, the surface flow artificial wetland has simple design and less investment; the subsurface flow wetland has no exposed free water surface, and sewage seeps under the surface of the filler, so that the subsurface flow wetland is efficient and sanitary.
The pretreatment of precipitation and filtration can greatly reduce the blockage of the wetland and the replacement frequency of the later-stage filler. The composite vertical flow constructed wetland changes the water flow modes of the surface flow wetland, the subsurface flow wetland and the single vertical flow wetland, effectively solves the short circuit phenomenon easily caused by other types of wetlands, enables the sewage in the wetland to fully utilize the treatment matrix, and improves the treatment effect of the wetland. Meanwhile, the surface flow constructed wetland, the vertical subsurface flow wetland and the multi-pond system are combined, an aeration oxygenation tank is additionally arranged at the front section of the first-stage vertical subsurface flow wetland, an aeration pipe is additionally arranged in the second-stage vertical subsurface flow wetland, and the aeration rates of the two-stage vertical flow constructed wetland are different, so that an anaerobic, anoxic and aerobic composite water treatment structure is formed, and the overall denitrification and dephosphorization effects of the system are improved.
However, the traditional subsurface flow constructed wetland has poor oxygenation capacity, and can only oxygenate substrates through a plant and atmosphere reoxygenation way, and when the wetland is used for treating domestic sewage, because the pollutant load is obviously higher than the upper limit of the plant and atmosphere reoxygenation capacity, the dissolved oxygen concentration of the substrates is hardly influenced by plant oxygen secretion and atmosphere reoxygenation, so that a typical anoxic-anaerobic environment is easily formed in the substrates, and the main dominant bacteria are ammonifying bacteria, and the removal capacity of ammonia nitrogen is very low; and the speed of degrading organic matters by microorganisms in an anoxic-anaerobic environment is slow, and if the decomposition speed of the microorganisms is lower than that of pollutants entering a system, the substrate is blocked.
SUMMERY OF THE UTILITY MODEL
Based on the problem that prior art exists, the utility model aims at providing a compound flows and many ponds constructed wetland sewage treatment system can avoid the matrix to take place to block up, promotes the treatment effeciency.
The utility model aims at realizing through the following technical scheme:
the utility model discloses embodiment provides a compound flows and many ponds constructed wetland sewage treatment system, include:
two groups of composite flow multi-pond constructed wetland subsystems which are arranged in parallel; wherein, the many ponds of single group composite flow constructed wetland subsystem includes: the system comprises a water inlet pipe, a water inlet and distribution well, a sedimentation and filtration pond, a surface flow artificial wetland, a first-stage oxidation pond, an aeration oxygenation pond, a first-stage vertical flow artificial wetland, a second-stage oxidation pond, a second-stage vertical flow artificial wetland, a third-stage oxidation pond, a water outlet well and a water discharge pipe; wherein,
the water inlet distribution well is sequentially connected with the sedimentation pond, the surface flow constructed wetland, the first-stage oxidation pond, the aeration oxygenation pond, the first-stage vertical flow constructed wetland, the second-stage oxidation pond, the second-stage vertical flow constructed wetland, the third-stage oxidation pond and the water outlet well;
the water inlet pipe is connected with the water inlet distribution well;
perforated aeration pipes are arranged in the aeration and oxygenation tank and the first-stage and second-stage vertical subsurface flow wetlands, and are connected with an air blower through air pipes;
the water outlet well is connected with the water drainage pipe.
By the above-mentioned the utility model provides a technical scheme can see out, the embodiment of the utility model provides a compound flows and many ponds constructed wetland sewage treatment system, its beneficial effect is:
the complete AAO denitrification and dephosphorization artificial wetland system is formed by combining two groups of compound flow and multi-pond artificial wetlands which are arranged in parallel, a surface flow artificial wetland, a vertical subsurface flow wetland and a multi-pond system, additionally arranging an aeration and oxygenation pond at the front section of the first-stage vertical subsurface flow wetland, additionally arranging an aeration pipe in the second-stage vertical subsurface flow wetland, and serially connecting the systems through water inlet devices, water outlet devices, water distribution devices, water collection devices and the like. Meanwhile, the sedimentation and filtration pond has the functions of strengthening pretreatment sedimentation and filtration, and the oxidation pond matched with each artificial wetland has the functions of sedimentation and aquatic plant purification, so that the removal efficiency is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic plan view of a sewage treatment system for a multi-pond constructed wetland and a composite flow provided by an embodiment of the utility model;
FIG. 2 is a schematic cross-sectional view of a sewage treatment system for a multi-pond constructed wetland and a composite flow provided by an embodiment of the utility model;
in the figure: 1-water inlet and distribution well; 2-a sedimentation pond; 3-a filtration pond; 4-surface flow artificial wetland; 5-a first stage oxidation pond; 6-aeration oxygenation pool; 7-first-stage vertical flow artificial wetland; 8-a second oxidation pond; 9-two-stage vertical flow artificial wetland; 10-third stage oxidation pond; 11-a water outlet well; 12-a water inlet pipe; 13-perforating water distribution wall; 14-rubble retaining walls; 15-the covering layer of the sedimentation pond; 151-covering layer of surface flow artificial wetland; 16-aquatic emergent wetland plants; 17-aquatic submerged wetland plants; 18-an effluent weir; 19-perforated water distribution pipes; 20-drainage layer of the filter pond; 21-transition layer of filter pond; 22-a filler layer of the filter pond; 201-a drainage layer of the first stage oxidation pond; 211-transition layer of first stage oxidation pond; 221-a packing layer of a first-stage oxidation pond; 202-a drainage layer of the first-level vertical flow artificial wetland; 212-a transition layer of the primary vertical flow artificial wetland; 222-a packing layer of the first-level vertical flow artificial wetland; 203-a drainage layer of the secondary vertical flow constructed wetland; 213-a transition layer of the secondary vertical flow constructed wetland; 223-a packing layer of the second-level vertical flow artificial wetland; 23-a drain pipe; 24-a perforated collector pipe of the filtration pond; 241-a perforated water collecting pipe of the first stage oxidation pond; 242-perforated water collecting pipe of the primary vertical flow artificial wetland; 243-perforated water collecting pipes of the second-level vertical flow artificial wetland; 25-a perforated aeration pipe of the aeration and oxygenation tank; 251-perforated aeration pipe of second-level vertical flow artificial wetland; 26-air tube.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Details not described in the embodiments of the present invention belong to the prior art known to those skilled in the art.
As shown in fig. 1 and 2, the embodiment of the utility model provides a compound flow and many ponds constructed wetland sewage treatment system for handle urban domestic sewage, can avoid the matrix to take place to block up, promote the treatment effeciency, overcome the shortcoming of existing compound constructed wetland, include:
two groups of composite flow multi-pond constructed wetland subsystems which are arranged in parallel; wherein, the many ponds of single group composite flow constructed wetland subsystem includes: the system comprises a water inlet pipe, a water inlet and distribution well, a sedimentation and filtration pond, a surface flow artificial wetland, a first-stage oxidation pond, an aeration oxygenation pond, a first-stage vertical flow artificial wetland, a second-stage oxidation pond, a second-stage vertical flow artificial wetland, a third-stage oxidation pond, a water outlet well and a water discharge pipe; wherein,
the water inlet distribution well is sequentially connected with the sedimentation pond, the surface flow constructed wetland, the first-stage oxidation pond, the aeration oxygenation pond, the first-stage vertical flow constructed wetland, the second-stage oxidation pond, the second-stage vertical flow constructed wetland, the third-stage oxidation pond and the water outlet well;
the water inlet pipe is connected with the water inlet distribution well;
perforated aeration pipes are arranged in the aeration and oxygenation tank and the first-stage and second-stage vertical subsurface flow wetlands, and are connected with an air blower through air pipes;
the water outlet well is connected with the water drainage pipe.
In the artificial wetland sewage treatment system, the precipitation and filtration pond consists of a precipitation pond and a filtration pond which are connected in sequence;
the front end of the sedimentation pond is provided with a perforated water distribution wall and a water retaining wall in sequence, the rear end of the sedimentation pond is provided with a water outlet weir notch, the bottom in the sedimentation pond is provided with a packing layer, and wetland plants are planted on the packing layer;
the water inlet pipe at the front end of the filtering pond adopts a perforated water distribution pipe, the bottom of the filtering pond is provided with a filtering filler layer, wetland plants are planted on the filtering filler layer, and the rear end of the filtering pond is provided with a water outlet perforated wall.
In the artificial wetland sewage treatment system, the aperture of the perforated water distribution wall of the sedimentation pond is 20 mm;
the water inlet retaining wall of the sedimentation pond has an upstream surface angle of 55 degrees, and the overflowing depth of the top of the water inlet retaining wall is 0.05-0.3 m;
the filler layer of the sedimentation pond consists of planting soil with the thickness of 300mm, wherein 10% of zeolite and 10% of volcanic rock are paved on the surface of the planting soil, and wetland plants planted in the sedimentation pond are submerged vegetation and emergent vegetation;
the perforation of the perforation water distribution pipe of the filter pond is that two sides of an inclined 45-degree angle are respectively provided with holes, and the aperture is 10 mm;
the aperture of the water outlet perforated wall of the filter pond is 20 mm;
the filter filler layer in the filter pond is respectively a drainage layer, a coarse filter layer and a fine filter layer from bottom to top; the drainage layer is formed by mixing 20% of ceramsite into gravel with the particle size of 40-80 mm, and the thickness of the drainage layer is 170-270 mm;
the coarse filter layer is formed by doping 20% of zeolite into gravel with the grain size of 20-40 mm, and the thickness of the coarse filter layer is 250 mm;
the fine filter layer is formed by paving 10% of zeolite and 10% of volcanic rock on the surface of sandy soil with the particle size of 5-20 mm, and the thickness of the fine filter layer is 250 mm.
In the constructed wetland sewage treatment system, the hydraulic gradient of the precipitation filter pond is 0.5 percent, the overall length-width ratio is 3:1, and BOD5The load is 7-10 g/(m)2D); the hydraulic retention time of the sedimentation pond of the sedimentation and filtration pond is 1.5-3 h, and the hydraulic retention time of the filtration pond is 1-2 h.
In the artificial wetland sewage treatment system, the front end of the surface flow artificial wetland is provided with the perforated water distribution pipe, the bottom in the surface flow artificial wetland is provided with the packing layer, wetland plants are planted on the packing layer, and the rear end of the surface flow artificial wetland is provided with the water outlet perforated water collecting pipe.
In the artificial wetland sewage treatment system, the perforation water distribution pipe and the effluent perforation water collecting pipe of the surface flow artificial wetland both adopt perforated pipes with the aperture of 10mm, and the two sides of the inclined lower 45-degree angle of the perforated pipes are respectively provided with holes;
the filler layer in the surface flow artificial wetland consists of 10 percent of zeolite and 10 percent of volcanic rock paved on the surface of 500mm of planting soil;
the wetland plants planted on the packing layer of the surface flow artificial wetland are one or more of reed, cattail and loosestrife.
In the artificial wetland sewage treatment system, the hydraulic gradient of the surface flow artificial wetland is 0.5 percent, the overall length-width ratio is 3:1, and BOD (biochemical oxygen demand)5The load is 10 to 12 g/(m)2D), the retention time of the surface flow constructed wetland is 4-6 d.
In the artificial wetland sewage treatment system, a packed bed is arranged at the bottom in the first-stage oxidation pond, wetland plants are planted on the packed bed, and a water outlet perforated water collecting pipe is arranged at the rear end of the first-stage oxidation pond;
the first-stage vertical subsurface flow wetland adopts a downward flow subsurface flow wetland, a water distribution channel, a perforated water distribution pipe, a perforated aeration pipe and a water collection pipe are sequentially arranged in the first-stage vertical subsurface flow wetland from front to back, a packed bed is arranged in the first-stage vertical subsurface flow wetland, and wetland plants are planted on the packed bed;
the front end of the second-stage oxidation pond is provided with a perforated water distribution pipe, the bottom in the second-stage oxidation pond is provided with a packed bed, wetland plants are planted on the packed bed, and the rear end of the second-stage oxidation pond is provided with a water outlet weir trough;
the second-stage vertical subsurface flow wetland adopts an upflow subsurface flow wetland, a perforated water distribution pipe, a perforated aeration pipe and a water collection pipe are sequentially arranged in the second-stage vertical subsurface flow wetland from front to back, a packed bed is arranged in the second-stage vertical subsurface flow wetland, and wetland plants are planted on the packed bed;
and a packed bed is arranged at the bottom in the third-stage oxidation pond, wetland plants are planted on the packed bed, and a water outlet perforated water collecting pipe is arranged at the rear end of the third-stage oxidation pond.
In the constructed wetland sewage treatment system, a packed bed in a first-stage oxidation pond is respectively a bottom drainage layer, a middle packing layer and a top drainage layer from bottom to top, the thickness of the bottom drainage layer is 290-350 mm, the thickness of the top drainage layer is 150mm, and the bottom drainage layer and the top drainage layer are both composed of gravels with the particle size of 20-30 mm; the thickness of the middle filler layer is 300mm, and the middle filler layer is composed of a biological ceramsite filter material with the particle size of 4-10 mm; one or more of wetland plants, namely reeds and aquatic weeds, planted on the filler bed of the first-stage oxidation pond;
the effluent perforated water collecting pipe of the first-stage oxidation pond adopts perforated pipes with the aperture of 10mm and the two sides of an inclined lower 45-degree angle respectively;
the structures of the second stage oxidation pond and the third stage oxidation pond are the same as the structure of the first stage oxidation pond;
the packed bed in the primary vertical subsurface flow constructed wetland is respectively a drainage layer, a transition layer, a packing layer and a covering layer from bottom to top, wherein the thickness of the drainage layer is 240-300 mm, and the drainage layer is composed of gravels with the particle size of 20-30 mm; the thickness of the transition layer is 200mm, and the transition layer is composed of gravels with the grain sizes of 10-18 mm; the thickness of the packing layer is 900mm, and the packing layer is composed of a biological ceramsite filter material with the particle size of 4-10 mm; the thickness of the covering layer is 150mm, and the covering layer is composed of gravels with the grain sizes of 10-18 mm;
the wetland plants planted on the filler bed of the primary vertical subsurface flow constructed wetland are one or more of reed, wild rice stem and cattail;
the packed bed in the secondary vertical subsurface flow constructed wetland is respectively a drainage layer, a transition layer, a packing layer and a covering layer from bottom to top, wherein the thickness of the drainage layer is 420-480 mm, and the drainage layer is composed of gravels with the particle size of 20-30 mm; the thickness of the transition layer is 200mm, and the transition layer is composed of gravels with the grain sizes of 10-18 mm; the thickness of the packing layer is 700mm, and the packing layer is composed of a biological ceramsite filter material with the particle size of 4-10 mm; the thickness of the covering layer is 150mm, and the covering layer is composed of gravels with the grain sizes of 10-18 mm;
wetland plants planted on the filler bed of the secondary vertical subsurface flow constructed wetland are one or more of reed, cane shoots and cattail;
the aeration pipes in the second-stage vertical subsurface flow wetland adopt tubular aerators and are uniformly arranged in a drainage layer of a packed bed in the second-stage vertical subsurface flow wetland;
the perforated water distribution pipe, the perforated aeration pipe and the water collection pipe in the first-stage and second-stage vertical subsurface wetland are perforated pipes with holes on two sides of an inclined lower 45-degree angle with the aperture of 10 mm.
In the artificial wetland sewage treatment system, the hydraulic gradients of the first-stage, second-stage and third-stage oxidation ponds are all 0.5 percent， BOD5The load is 15-20 g/(m)2D), the hydraulic retention time is 2-3 d;
the primary vertical subsurface flow constructed wetland is a downward flow constructed wetland, the hydraulic gradient is 1 percent, the overall length-width ratio is 3:1, and BOD5A load of 30 to 40 g/(m)2D), the hydraulic retention time is 3-4 d;
the secondary vertical subsurface flow constructed wetland is an upward flow constructed wetland, the hydraulic gradient is 1 percent, the length-width ratio is 3:1, and BOD5A load of 35 to 45 g/(m)2D), the hydraulic retention time is 4-5 d.
The utility model discloses a compound flow and many ponds constructed wetland sewage treatment system, by two sets of compound flows and many ponds constructed wetland that set up side by side, make up surface current constructed wetland, perpendicular undercurrent wetland and many ponds system to add aeration oxygenation pond at the perpendicular undercurrent wetland anterior segment of one-level, add the aeration pipe in the perpendicular undercurrent wetland of second grade, establish ties the system through intaking, play water, distribution water, water-collecting device etc. and form complete AAO nitrogen and phosphorus removal constructed wetland system. Meanwhile, the sedimentation and filtration pond has the functions of strengthening pretreatment sedimentation and filtration, and the oxidation pond matched with each artificial wetland has the functions of sedimentation and aquatic plant purification, so that the removal efficiency is further improved. The sewage treatment system for the composite flow and multi-pond constructed wetlands has the beneficial effects that: (1) the sedimentation and filtration pond is arranged at the front end of the system, has the functions of strengthening pretreatment sedimentation and filtration, and can reduce the load of subsequent wetland treatment. (2) The surface flow artificial wetland is used as an anaerobic treatment area, biological ceramsite filter materials with relatively strong phosphorus absorption capacity are adopted, wetland plants with good phosphorus removal effect, such as typha orientalis, lythrata and the like, are planted, and phosphorus in a water body is removed in a targeted manner. (3) The first-level vertical subsurface flow constructed wetland is used as an anoxic treatment area, the front end of the first-level vertical subsurface flow constructed wetland is provided with a first-level oxygenation tank for preoxygenation, the water body is directly aerated and oxygenated with high efficiency, the required wind pressure is small, meanwhile, a biological ceramsite filter material with high porosity is adopted, wetland plants such as reed, wild rice stem and cattail with good denitrification effect are planted, and the ammonia nitrogen removal effect is enhanced. (4) The secondary vertical subsurface flow constructed wetland is used as an aerobic treatment area, and the aeration device is arranged in the tank body, so that the dissolved oxygen level in the tank body is ensured, the carbonization reaction is promoted, and the removal of BOD is facilitated. And (5) the three-stage oxidation ponds which are matched with the artificial wetlands have the functions of sedimentation and aquatic plant purification, so that the removal effect is further improved, and the quality of the effluent water is ensured. (6) The water distribution device and the water collection device are both perforated pipes and are uniformly arranged, and the aeration device is a tubular microporous aerator, so that the oxygenation efficiency is high.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The utility model provides a compound flows and many ponds constructed wetland sewage treatment system, concrete implementation is shown in figure 1, 2, contain two sets of compound flows and many ponds constructed wetland, singly organize constructed wetland series connection intake chamber, deposit and filter pond, surface current constructed wetland, oxidation pond, the more than two-stage undercurrent wetland and oxidation pond, play pond etc. and constitute, form complete AAO nitrogen and phosphorus removal constructed wetland system.
The single-group composite flow multi-pond artificial wetland subsystem is an artificial wetland purification subsystem which is composed of a water inlet and distribution well, a sedimentation and filtration pond, a surface flow artificial wetland, a first-stage oxidation pond, more than two stages of subsurface flow wetlands, a later two-stage oxidation pond, a water outlet well and the like which are connected in series.
In the artificial wetland sewage treatment system, the precipitation filtering pond BOD5Load of 7 to 10 g/(m)2D), the hydraulic retention time of the sedimentation pond of the sedimentation and filtration pond is 1.5-3 h, the hydraulic retention time of the filtration pond is 1-2 h, and the sedimentation pond is mainly provided with a perforated water distribution wall, a water retaining wall, a water outlet weir trough, a filler and wetland plants; the filtering pond of the sedimentation filtering pond is mainly provided with a perforated water distribution pipe, filtering gravels, wetland plants and a water outlet perforated wall. The sedimentation pond is provided with a water inlet retaining wall, wetland plants and a water outlet weir, the filler layer in the sedimentation area is mainly 300mm of planting soil (zeolite is added on the surface of the filler layer by 10 percent and volcanic rock is added by 10 percent), and the sedimentation area is planted with submerged vegetation and emergent vegetation. The filter pond packed bed is respectively provided with a drainage layer, a coarse filter layer and a fine filter layer from bottom to top, the drainage layer is mainly gravel (doped with 20% of ceramsite) with the particle size of 40-80 mm, and the thickness of the drainage layer at the bottom is 170-270 mm; the coarse filter layer is mainly composed ofGravel (20 percent of zeolite) with the grain diameter of 20-40 mm and the thickness of 250 mm; the fine filter layer is mainly sandy soil (the surface of which is added with 10 percent of zeolite and 10 percent of volcanic rock) with the particle size of 5-20 mm, and the thickness of the fine filter layer is 250 mm.
In the artificial wetland sewage treatment system, the surface flow artificial wetland BOD5Load of 10 to 12 g/(m)2D), the surface flow constructed wetland stays for 4-6 d, and a perforated water distribution pipe, a filler, wetland plants and a water outlet perforated water collecting pipe are arranged in a matched manner. The surface flow constructed wetland packing layer is mainly 500mm planting soil (zeolite is added on the surface by 10 percent and volcanic rock is added by 10 percent). The surface flow constructed wetland is mainly used for planting emergent aquatic plants such as reed, cattail, loosestrife and the like.
In the artificial wetland sewage treatment system, the primary vertical subsurface flow artificial wetland is a downward flow artificial wetland, BOD5A load of 30 to 40 g/(m)2D) keeping the hydraulic power for 3-4 d, and arranging a water inlet distribution pipe and a water outlet collection pipe in a matched manner. The first-stage vertical subsurface flow constructed wetland packed bed is respectively provided with a drainage layer, a transition layer, a packing layer and a covering layer from bottom to top, wherein the thickness of the drainage layer is 240-300 mm, and the drainage layer is mainly gravel with the particle size of 20-30 mm; the thickness of the transition layer is 200mm, and the transition layer is mainly gravel with the grain diameter of 10-18 mm; the thickness of the filler layer is 900mm, and the filler layer is mainly a biological ceramsite filter material with the particle size of 4-10 mm; the thickness of the covering layer is 150mm, and the covering layer is mainly gravel with the grain diameter of 10-18 mm. The upper part of the first-stage vertical subsurface flow constructed wetland is mainly planted with wetland plants such as reed, wild rice stem, cattail and the like.
In the artificial wetland sewage treatment system, the secondary vertical subsurface flow artificial wetland is an upflow artificial wetland, BOD5A load of 35 to 45 g/(m)2D) keeping the hydraulic power for 4-5 d, and arranging a water inlet distribution pipe, an aeration pipe and a water outlet collection pipe in a matched manner. The second-stage vertical subsurface flow constructed wetland packed bed is composed of a drainage layer, a transition layer, a packing layer and a covering layer from bottom to top, wherein the thickness of the drainage layer is 420-480 mm, and the drainage layer is mainly gravel with the particle size of 20-30 mm; the thickness of the transition layer is 200mm, and the transition layer is mainly gravel with the grain diameter of 10-18 mm; the thickness of the filler layer is 700mm, and the filler layer is mainly a biological ceramsite filter material with the particle size of 4-10 mm; the thickness of the covering layer is 150mm, mainlyGravel with the grain diameter of 10-18 mm. The upper part of the second-stage vertical subsurface flow constructed wetland is mainly planted with wetland plants such as reed, wild rice stem, cattail and the like.
In the constructed wetland sewage treatment system, BOD of the three-stage oxidation ponds (the first stage, the second stage and the third stage oxidation ponds) is adopted5A load of 15 to 20 g/(m)2D), the hydraulic retention time is 2-3 d, and a water distribution wall with a perforated bottom, a water inlet pipe and a water outlet collecting pipe are arranged in a matched manner. The packed bed is respectively provided with a drainage layer, a packing layer and a drainage layer from bottom to top, the thickness of the drainage layer at the bottom is 290-350 mm, the thickness of the drainage layer at the top is 150mm, and the gravel with the particle size of 20-30 mm is mainly used; the thickness of the filler layer is 300mm, and the filler layer is mainly a biological ceramsite filter material with the particle size of 4-10 mm. Wetland plants such as cattail, candle, reed, canna and the like are mainly planted on the upper part of the oxidation pond.
In the artificial wetland sewage treatment system, the precipitation and filtration pond has the functions of strengthening pretreatment precipitation and filtration, and the oxidation pond matched with each artificial wetland has the functions of precipitation and aquatic plant purification, so that the removal efficiency is further improved.
Examples
The treatment scale of this example was 200m3(d) town sewage, raw water quality: CODCr＝316mg/L、 BOD5＝146.5mg/L、SS＝238mg/L、TP＝6.82mg/L、TN＝54.6mg/L、NH3-N ═ 35.2 mg/L. Raw water enters the wetland system after passing through the coarse grating, the fine grating, the aeration grit chamber and the primary sedimentation tank.
BOD of the sedimentation and filtration pond5Load 10 g/(m)2D), the hydraulic retention time of the sedimentation pond is 3 hours, the packing layer of the sedimentation area is mainly 300mm of planting soil (zeolite is added on the surface of the sedimentation area by 10 percent and volcanic rock is added on the surface of the sedimentation area by 10 percent), and the golden fish algae and the reed are planted in the sedimentation area. The hydraulic retention time of the filter pond is 2 hours, the drainage layer of the filter pond is mainly gravel (20% of ceramsite) with the particle size of 40-80 mm, and the thickness of the drainage layer at the bottom is 200 mm; the rough filtering layer is mainly gravel (doped with zeolite 20%) with the particle size of 20-40 mm, and the thickness of the rough filtering layer is 250 mm; thin and thinThe filtering layer is mainly sandy soil (the surface of which is added with 10 percent of zeolite and 10 percent of volcanic rock) with the grain diameter of 5-20 mm, and the thickness of the filtering layer is 250 mm.
Surface flow artificial wetland BOD5Load 10 g/(m)2D), the surface flow constructed wetland stays for 5d, the packing layer mainly comprises 500mm of planting soil (zeolite is added on the surface of the planting soil and volcanic rock is added by 10 percent), and reed and cattail are planted in different regions.
Primary vertical undercurrent artificial wetland BOD5Load 35 g/(m)2D), the hydraulic retention time is 4d, the thickness of the drainage layer is 250mm, and the gravel with the particle size of 20-30 mm is mainly used; the thickness of the filter layer is 200mm, and the filter layer is mainly gravel with the particle size of 10-18 mm; the thickness of the filler layer is 900mm, and the filler layer is mainly a biological ceramsite filter material with the particle size of 4-10 mm; the thickness of the covering layer is 150mm, and the covering layer is mainly gravel with the grain diameter of 10-18 mm. And planting reed, wild rice stem and cattail in a intercropping manner.
Two-stage vertical subsurface flow constructed wetland BOD5Load 40 g/(m)2D), the hydraulic retention time is 5d, the thickness of the drainage layer is 420mm, and the gravel with the particle size of 20-30 mm is mainly used; the thickness of the transition layer is 200mm, and the transition layer is mainly gravel with the grain diameter of 10-18 mm; the thickness of the filler layer is 700mm, and the filler layer is mainly a biological ceramsite filter material with the particle size of 4-10 mm; the thickness of the covering layer is 150mm, gravel with the grain diameter of 10-18 mm is mainly used, and reeds and cattails are planted in the covering layer in a sleeved mode.
BOD of the three oxidation ponds (i.e. the first, second and third oxidation ponds)5Load 15 g/(m)2D), the hydraulic retention time is 2d, the thickness of a bottom drainage layer is 300mm, the thickness of a top drainage layer is 150mm, and the gravel with the particle size of 20-30 mm is mainly used; the thickness of the filler layer is 300mm, and the filler layer is mainly a biological ceramsite filter material with the particle size of 4-10 mm. Planting Typha angustifolia, candelilla, and Phragmites communis in different regions.
The treatment effect (mg/L,%) of the system in this example is shown in Table 1. Table 1 shows COD in sewage after pretreatment and treatment by the composite vertical subsurface flow-intermittent reoxygenation vertical subsurface flow constructed wetland sewage treatment processCr、BOD5、SS、TP、TN、NH3-removal effect of N.
TABLE 1 removal effect of village and town sewage after pretreatment and treatment by composite vertical undercurrent-intermittent reoxygenation vertical undercurrent artificial wetland sewage treatment system
| Index of water quality | Inflow (mg/L) | Water outlet (mg/L) | Removal rate |
| CODCr | 316 | 36.7 | 88.38％ |
| BOD5 | 146.5 | 14.3 | 90.23％ |
| SS | 238 | 6.2 | 97.39％ |
| TP | 6.82 | 0.44 | 93.5％ |
| TN | 54.6 | 6.8 | 87.54％ |
| NH3-N | 35.2 | 2.4 | 93.18％ |
Can find out through last table, the utility model discloses an artificial wetland sewage treatment system has better effect of getting rid of to sewage. This constructed wetland sewage treatment system has effectively promoted the treatment effect to nitrogen, phosphorus in the urban domestic sewage, and the sedimentation filter pond has the effect of strengthening preliminary treatment sediment and filtration simultaneously, and the supporting oxidation pond that sets up of each constructed wetland has the effect of sediment and aquatic plant purification, further improves and gets rid of efficiency.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A sewage treatment system for a composite flow and multi-pond constructed wetland is characterized by comprising:
two groups of composite flow multi-pond constructed wetland subsystems which are arranged in parallel; wherein, the many ponds of single group composite flow constructed wetland subsystem includes: the system comprises a water inlet pipe, a water inlet and distribution well, a sedimentation and filtration pond, a surface flow artificial wetland, a first-stage oxidation pond, an aeration oxygenation pond, a first-stage vertical flow artificial wetland, a second-stage oxidation pond, a second-stage vertical flow artificial wetland, a third-stage oxidation pond, a water outlet well and a water discharge pipe; wherein,
the water inlet distribution well is sequentially connected with the sedimentation pond, the surface flow constructed wetland, the first-stage oxidation pond, the aeration oxygenation pond, the first-stage vertical flow constructed wetland, the second-stage oxidation pond, the second-stage vertical flow constructed wetland, the third-stage oxidation pond and the water outlet well;
the water inlet pipe is connected with the water inlet distribution well;
perforated aeration pipes are arranged in the aeration and oxygenation tank and the first-stage and second-stage vertical subsurface flow wetlands, and are connected with an air blower through air pipes;
the water outlet well is connected with the water drainage pipe.
2. The system for treating sewage of a combined-flow and multi-pond artificial wetland according to claim 1, wherein the sedimentation and filtration pond consists of a sedimentation pond and a filtration pond which are connected in sequence;
the front end of the sedimentation pond is sequentially provided with a perforated water distribution wall and a water retaining wall, the rear end of the sedimentation pond is provided with a water outlet weir notch, the bottom in the sedimentation pond is provided with a packing layer, and wetland plants are planted on the packing layer;
the water inlet pipe at the front end of the filtering pond adopts a perforated water distribution pipe, the bottom of the filtering pond is provided with a filtering filler layer, wetland plants are planted on the filtering filler layer, and the rear end of the filtering pond is provided with a water outlet perforated wall.
3. The sewage treatment system of the combined-flow and multi-pond artificial wetland according to claim 2, wherein the aperture of the perforated water distribution wall of the sedimentation pond is 20 mm;
the water inlet retaining wall of the sedimentation pond has an upstream surface angle of 55 degrees, and the overflowing depth of the top of the water inlet retaining wall is 0.05-0.3 m;
the filler layer of the sedimentation pond consists of planting soil with the thickness of 300mm, wherein zeolite and volcanic rock are paved on the surface of the planting soil, and wetland plants planted in the sedimentation pond are submerged vegetation and emergent vegetation;
the perforation of the perforation water distribution pipe of the filter pond is that two sides of an inclined 45-degree angle are respectively provided with holes, and the aperture is 10 mm;
the aperture of the water outlet perforated wall of the filter pond is 20 mm;
the filter filler layer in the filter pond is respectively a drainage layer, a coarse filter layer and a fine filter layer from bottom to top; the drainage layer is formed by mixing 20% of ceramsite into gravel with the particle size of 40-80 mm, and the thickness of the drainage layer is 170-270 mm;
the coarse filter layer is formed by doping zeolite into gravel with the particle size of 20-40 mm, and the thickness of the coarse filter layer is 250 mm;
the fine filter layer is formed by paving zeolite and volcanic rock on the surface of sandy soil with the particle size of 5-20 mm, and the thickness of the fine filter layer is 250 mm.
4. The system for sewage treatment of a complex flow and multi-pond artificial wetland according to any one of claims 1 to 3, wherein the hydraulic gradient of the sedimentation and filtration pond is 0.5%, the overall aspect ratio is 3:1, BOD5The load is 7-10 g/(m)2D); the hydraulic retention time of the sedimentation pond of the sedimentation and filtration pond is 1.5-3 h, and the hydraulic retention time of the filtration pond is 1-2 h.
5. The sewage treatment system of the combined-flow multi-pond constructed wetland according to any one of claims 1 to 3, wherein a perforated water distribution pipe is arranged at the front end of the surface flow constructed wetland, a packing layer is arranged at the bottom in the surface flow constructed wetland, wetland plants are planted on the packing layer, and a perforated water collection pipe is arranged at the rear end of the surface flow constructed wetland.
6. The sewage treatment system of the combined-flow and multi-pond constructed wetland according to claim 5, wherein the perforated water distribution pipes and the water outlet perforated water collecting pipes of the surface-flow constructed wetland are perforated pipes with the aperture of 10mm, and two sides of the perforated pipes are respectively provided with holes at an inclined lower angle of 45 degrees;
the filler layer in the surface flow constructed wetland consists of zeolite and volcanic rock paved on the surface of 500mm of planting soil;
the wetland plants planted on the packing layer of the surface flow artificial wetland are one or more of reed, cattail and loosestrife.
7. The sewage treatment system of the combined-flow and multi-pond constructed wetland of claim 5, wherein the hydraulic gradient of the surface-flow constructed wetland is 0.5%, the overall aspect ratio is 3:1, BOD5The load is 10 to 12 g/(m)2D), the retention time of the surface flow constructed wetland is 4-6 d.
8. The sewage treatment system of the combined-flow and multi-pond artificial wetland according to any one of claims 1 to 3, wherein a packed bed is arranged at the bottom in the first-stage oxidation pond, wetland plants are planted on the packed bed, and a perforated water collecting pipe for water outlet is arranged at the rear end of the first-stage oxidation pond;
the first-stage vertical subsurface flow wetland adopts a downward flow subsurface flow wetland, a water distribution channel, a perforated water distribution pipe, a perforated aeration pipe and a water collection pipe are sequentially arranged in the first-stage vertical subsurface flow wetland from front to back, a packed bed is arranged in the first-stage vertical subsurface flow wetland, and wetland plants are planted on the packed bed;
the front end of the second-stage oxidation pond is provided with a perforated water distribution pipe, the bottom in the second-stage oxidation pond is provided with a packed bed, wetland plants are planted on the packed bed, and the rear end of the second-stage oxidation pond is provided with a water outlet weir trough;
the second-stage vertical subsurface flow wetland adopts an upflow subsurface flow wetland, a perforated water distribution pipe, a perforated aeration pipe and a water collection pipe are sequentially arranged in the second-stage vertical subsurface flow wetland from front to back, a packed bed is arranged in the second-stage vertical subsurface flow wetland, and wetland plants are planted on the packed bed;
and a packed bed is arranged at the bottom in the third-stage oxidation pond, wetland plants are planted on the packed bed, and a water outlet perforated water collecting pipe is arranged at the rear end of the third-stage oxidation pond.
9. The system for treating sewage of the artificial wetland with the composite flow and the multiple ponds according to claim 8, characterized in that a packed bed in the first-stage oxidation pond is respectively a bottom drainage layer, a middle packing layer and a top drainage layer from bottom to top, the thickness of the bottom drainage layer is 290-350 mm, the thickness of the top drainage layer is 150mm, and the bottom drainage layer and the top drainage layer are both composed of gravels with the particle size of 20-30 mm; the thickness of the middle filler layer is 300mm, and the middle filler layer is composed of a biological ceramsite filter material with the particle size of 4-10 mm; one or more of wetland plants, namely reeds and aquatic weeds, planted on the filler bed of the first-stage oxidation pond;
the effluent perforated water collecting pipe of the first-stage oxidation pond adopts perforated pipes with the aperture of 10mm and the two sides of an inclined lower 45-degree angle respectively;
the structures of the second stage oxidation pond and the third stage oxidation pond are the same as the structure of the first stage oxidation pond;
the packed bed in the primary vertical subsurface flow constructed wetland is respectively a drainage layer, a transition layer, a packing layer and a covering layer from bottom to top, wherein the thickness of the drainage layer is 240-300 mm, and the drainage layer is composed of gravels with the particle size of 20-30 mm; the thickness of the transition layer is 200mm, and the transition layer is composed of gravels with the grain sizes of 10-18 mm; the thickness of the packing layer is 900mm, and the packing layer is composed of a biological ceramsite filter material with the particle size of 4-10 mm; the thickness of the covering layer is 150mm, and the covering layer is composed of gravels with the grain sizes of 10-18 mm;
the wetland plants planted on the filler bed of the primary vertical subsurface flow constructed wetland are one or more of reed, wild rice stem and cattail;
the packed bed in the secondary vertical subsurface flow constructed wetland is respectively a drainage layer, a transition layer, a packing layer and a covering layer from bottom to top, wherein the thickness of the drainage layer is 420-480 mm, and the drainage layer is composed of gravels with the particle size of 20-30 mm; the thickness of the transition layer is 200mm, and the transition layer is composed of gravels with the grain sizes of 10-18 mm; the thickness of the packing layer is 700mm, and the packing layer is composed of a biological ceramsite filter material with the particle size of 4-10 mm; the thickness of the covering layer is 150mm, and the covering layer is composed of gravels with the grain sizes of 10-18 mm;
wetland plants planted on the filler bed of the secondary vertical subsurface flow constructed wetland are one or more of reed, cane shoots and cattail;
the aeration pipes in the second-stage vertical subsurface flow wetland adopt tubular aerators and are uniformly arranged in a drainage layer of a packed bed in the second-stage vertical subsurface flow wetland;
the perforated water distribution pipe, the perforated aeration pipe and the water collection pipe in the first-stage and second-stage vertical subsurface wetland are perforated pipes with holes on two sides of an inclined lower 45-degree angle with the aperture of 10 mm.
10. The sewage treatment system of the combined-flow and multi-pond constructed wetland according to claim 8, wherein,
the hydraulic gradient of the first-stage, second-stage and third-stage oxidation ponds is 0.5 percent, and BOD5The load is 15-20 g/(m)2D), the hydraulic retention time is 2-3 d;
the primary vertical subsurface flow constructed wetland is a downward flow constructed wetland, the hydraulic gradient is 1 percent, the overall length-width ratio is 3:1, and BOD5A load of 30 to 40 g/(m)2D), the hydraulic retention time is 3-4 d;
the secondary vertical subsurface flow constructed wetland is an upward flow constructed wetland, the hydraulic gradient is 1 percent, the length-width ratio is 3:1, and BOD5A load of 35 to 45 g/(m)2D), the hydraulic retention time is 4-5 d.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820428694.2U CN209193725U (en) | 2018-03-28 | 2018-03-28 | A kind of combined-flow and more pool artificial marsh sewage treatment systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820428694.2U CN209193725U (en) | 2018-03-28 | 2018-03-28 | A kind of combined-flow and more pool artificial marsh sewage treatment systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209193725U true CN209193725U (en) | 2019-08-02 |
Family
ID=67403904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820428694.2U Expired - Fee Related CN209193725U (en) | 2018-03-28 | 2018-03-28 | A kind of combined-flow and more pool artificial marsh sewage treatment systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209193725U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111333194A (en) * | 2020-03-09 | 2020-06-26 | 广州市环境保护工程设计院有限公司 | Multi-stage stabilization pond-artificial wetland combined system |
| CN111362418A (en) * | 2020-05-12 | 2020-07-03 | 知和环保科技有限公司 | Alternate operation subsurface flow and surface flow composite artificial wetland and application method thereof |
| CN112125405A (en) * | 2020-09-02 | 2020-12-25 | 浙江问源环保科技股份有限公司 | Composite artificial wetland system and operation method thereof |
| CN113800723A (en) * | 2021-10-19 | 2021-12-17 | 盐城师范学院 | Bionic wetland system |
-
2018
- 2018-03-28 CN CN201820428694.2U patent/CN209193725U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111333194A (en) * | 2020-03-09 | 2020-06-26 | 广州市环境保护工程设计院有限公司 | Multi-stage stabilization pond-artificial wetland combined system |
| CN111362418A (en) * | 2020-05-12 | 2020-07-03 | 知和环保科技有限公司 | Alternate operation subsurface flow and surface flow composite artificial wetland and application method thereof |
| CN111362418B (en) * | 2020-05-12 | 2021-06-01 | 知和环保科技有限公司 | Alternate operation subsurface flow and surface flow composite artificial wetland and application method thereof |
| CN112125405A (en) * | 2020-09-02 | 2020-12-25 | 浙江问源环保科技股份有限公司 | Composite artificial wetland system and operation method thereof |
| CN113800723A (en) * | 2021-10-19 | 2021-12-17 | 盐城师范学院 | Bionic wetland system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202881048U (en) | Multi-medium constructed wetland water treatment system | |
| CN209193725U (en) | A kind of combined-flow and more pool artificial marsh sewage treatment systems | |
| CN206635115U (en) | A kind of compound flow constructed wetland sewage disposal system | |
| CN105753166B (en) | Horizontal drowned flow-two-stage oxygenation vertical subsurface flow wetland sewage disposal system and method | |
| CN108147624A (en) | A kind of processing method of country sewage | |
| CN201942568U (en) | Biochemical membrane automatic aeration vertical subsurface flow constructed wetland sewage treatment device | |
| CN110550829A (en) | Tower type ecological purification integrated device for domestic sewage of small towns | |
| CN103708671A (en) | Multi-medium constructed wetland water treatment system and treatment method thereof | |
| CN111204927A (en) | Ecological public toilet sewage treatment circulating system and sewage treatment and recycling method | |
| CN108275782B (en) | Integrated three-dimensional wetland sewage treatment effluent TN control device and method | |
| CN111170580A (en) | Sewage purification treatment system | |
| CN212609832U (en) | Series-connection backflow enhanced denitrification constructed wetland | |
| CN211896515U (en) | Artificial wetland system applied to super-limit purification treatment of low-concentration polluted water body | |
| CN202063793U (en) | Biological response system used for multi-stage sewage treatment | |
| CN105110556A (en) | Integrated denitrification decarbonization biological aerated filter and processing system thereof | |
| CN202849167U (en) | Staged root zone sewage treatment ecological artificial wetland system | |
| CN202850516U (en) | Novel water-saving pollution reduction green ecological building system | |
| CN111908716B (en) | Village and town sewage transition ring type ecological treatment system and method | |
| CN211284063U (en) | Single household domestic sewage treatment system | |
| CN210313934U (en) | Distributed sewage treatment system of constructed wetland | |
| CN102515413B (en) | Sewage treatment system and treatment method of composite horizontal undercurrent constructed wetland | |
| CN110845084A (en) | Artificial wetland system applied to super-limit purification treatment of low-concentration polluted water body | |
| CN208120925U (en) | A kind of artificial swamp multi-stage filtration systems | |
| CN111362418A (en) | Alternate operation subsurface flow and surface flow composite artificial wetland and application method thereof | |
| CN101397170A (en) | Sewage treatment apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190802 |