CN212174590U - Biological retention tank for treating tail water of distributed sewage treatment facility - Google Patents
Biological retention tank for treating tail water of distributed sewage treatment facility Download PDFInfo
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- CN212174590U CN212174590U CN202020252696.8U CN202020252696U CN212174590U CN 212174590 U CN212174590 U CN 212174590U CN 202020252696 U CN202020252696 U CN 202020252696U CN 212174590 U CN212174590 U CN 212174590U
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Abstract
The utility model discloses a biological detention pond for processing tail water of a distributed sewage treatment facility, wherein a port is communicated with a main water distribution pipe, reducing tees are equidistantly arranged on the main water distribution pipe, and the reducing tees are communicated with one end of a branch water distribution pipe; the biological detention pool body is internally provided with a detention layer, a filter layer, a transition layer, a drainage layer and an HDPE (high-density polyethylene) impermeable membrane in sequence from top to bottom, the transition layer and the drainage layer are used as submerging layers, the height of the submerging layers is realized by the height of a water outlet of a main water distribution pipe, the main water distribution pipe is divided into two parts, one part is positioned in the drainage layer, and the other part is positioned outside the biological detention pool body; the utility model discloses a view crop, aquatic plant and multiple functions are packed, and collection plant, microorganism equal an organic whole, in many-sided water-purifying quality, form comparatively complete ecosystem, create manifold broken end habitat, promote water purification to be favorable to long-term steady operation.
Description
Technical Field
The utility model belongs to the technical field of the river is administered, concretely relates to be used for handling distributed sewage treatment facility tail water's biological delay pond.
Background
The river channel is an important component of an urban and rural ecosystem and has multiple functions of water and soil conservation, climate improvement, living comfort improvement and the like. For a long time, in order to improve the water environment of a river channel, improve the flood control and flood fighting standards of the river channel, a gray river channel landscape with hardness, manual work and canalization is formed, and a plurality of headquarters and creeks which are formed naturally or are formed due to blockage, landfill and the like exist, so that the ecological system and the natural landscape factors of the river channel are seriously influenced, the self-purification capacity of a water body is reduced, and the lives of residents, the images of cities and towns and the surrounding environment are seriously influenced.
Point source pollution is one of the main sources of river pollution and is one of the main pollution sources which are difficult to treat. At present, with the improvement of economic and living standards, people have higher and higher requirements on ecological landscape, the nation advocates ecological civilization construction, the water ecological construction is rapidly promoted, and the aims of realizing water quality improvement, ecological restoration and landscape construction are provided. The water ecosystem mainly consumes pollutants by using the exchange of matter energy of aquatic animals, plants and microorganisms in the growth and reproduction processes, and has the advantages of ecological coordination, difficult generation of secondary pollution and the like, so that the water ecosystem is widely applied to the treatment of the water environment of rivers at home and abroad, and has remarkable effect and small side effect.
The utility model discloses to distributed sewage treatment facility tail water point source pollution, combine non-point source pollution to administer biological detention pond, get rid of pollutants such as COD, BOD, nitrate nitrogen, total nitrogen, water purification.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a biological detention pond for handling distributed sewage treatment facility tail water through a series of effects such as soil adsorption, plant absorption, biodegradable, reduces soil erosion and water loss, reduces the content of nitrogen phosphorus in getting into the river course.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a biological retention tank for treating tail water of a distributed sewage treatment facility, which comprises a biological retention tank body and a submersible pump arranged in a well body,
the submersible pump is communicated with a port arranged in one side wall surface of the biological retention tank body through a pipeline, the port is communicated with the main water distribution pipe, reducing tees are arranged on the main water distribution pipe at equal intervals, and the reducing tees are communicated with one end of the branch water distribution pipe;
this internal from last to having set gradually detention layer, filter layer, transition layer and drainage blanket and HDPE prevention of seepage membrane down of biological detention pond, transition layer and drainage blanket are as submerging the layer, and the high delivery port that is responsible for through the water distribution of submerging the layer highly sets up the realization, the water distribution is responsible for and is divided into two parts, and partly lies in the drainage blanket, and another part lies in biological detention pond body outside.
Preferably, the distance between the reducing tee and the reducing tee is 800-1200 mm.
Preferably, 6 apopores have been seted up at least to the equidistance of water distribution branch pipe leaves, and the distance between apopore and the apopore is 350 and 450mm, and the apopore aperture is 3-6 mm.
Preferably, the bioretention pond body is plastered with a deashing brick layer through cement mortar.
Preferably, the tail end of the straight pipe section of the water distribution main pipe is provided with a ball valve.
Preferably, the water distribution device also comprises an aeration device arranged on one side of the water distribution main pipe.
Preferably, the thickness of the retention layer is 280-320mm, the thickness of the filtration layer is 380-420mm, the thickness of the transition layer is 260-320mm and the thickness of the drainage layer is 180-220 mm.
Preferably, the upper part of the well body is provided with a tail water inlet of the distributed water treatment equipment.
Above-mentioned be used for handling biological detention pond of distributed sewage treatment facility tail water, distributed sewage treatment facility tail water flows into biological detention pond by oneself, and biological detention pond flows into the river course.
The aquatic plant in the biological detention pond is preferably perennial aquatic plant suitable for local climate and water quality conditions, such as floating plant preferably flos Nymphaeae, emergent aquatic plant preferably canna, Thalictrum aquilegifolium, Iris acorus, etc. The stem and root combined type oxygen-enriched water purifier has the functions of absorbing and purifying external and internal source pollutants in a water body, and simultaneously generates oxygen through photosynthesis, the oxygen is conveyed and released into the water body through the stems and the roots, an aerobic area can be formed around the root hairs, the dissolved oxygen in the water body is increased, and the oxygen required by degrading pollutants is supplied to microorganisms and the like. Through the effects of adsorption, precipitation, filtration, absorption, transformation and the like of plant roots and microorganisms, the transparency of the water body is improved, and the concentration of pollutants such as organic matters, nutritive salts, heavy metals and the like is effectively reduced.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the problem of broken river course running water is solved, and the self-purification capacity of the water body of the Duantou creek is improved.
2. The ecological pond and the biological detention pond are integrated, and the removal effect of non-point source pollution nitrogen and phosphorus is improved.
3. The utility model discloses a view crop, aquatic plant and multiple functions are packed, and collection plant, microorganism equal an organic whole, in many-sided water-purifying quality, form comparatively complete ecosystem, create manifold broken end habitat, promote water purification to be favorable to long-term steady operation.
Drawings
FIG. 1 is a water distribution diagram of a bioretention pond.
FIG. 2 is a view showing the structure of a bioretention pond.
In the figure: 1 thing detention pond body, 2 well bodies, 3 immersible pumps, 4 pipelines, 5 interfaces, 6 water distribution main pipes, 7 reducing tee joints, 8 water distribution branch pipes, 9 apopores, 10 ball valves, 11 aeration equipment, 12 distributed water treatment facilities tail water inlet, 13 detention layers, 14 filter layers, 15 transition layers, 16 drainage layers, 17HDPE impermeable membranes, 18 deashing brick layers.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting of the invention. Based on the embodiments in 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.
The utility model provides a bioretention pond for treating tail water of a distributed sewage treatment facility as shown in figures 1-2, which comprises a bioretention pond body 1 and a submersible pump 3 arranged in a well body 2,
the submersible pump 3 is communicated with a port 5 arranged in one side wall surface of the biological retention tank body 1 through a pipeline 4, the port 5 is communicated with a main water distribution pipe 6, reducing tees 7 are arranged on the main water distribution pipe 6 at equal intervals, and the reducing tees 7 are communicated with one end of a branch water distribution pipe 8;
biological detention pond body 1 is interior from last to having set gradually detention layer 13, filter layer 14, transition layer 15 and drainage blanket 16 and HDPE prevention of seepage membrane 17 down, transition layer 15 and drainage blanket 16 are as submerging the layer, and the high delivery port height that is responsible for 6 through the water distribution of submerging the layer sets up the realization, the water distribution is responsible for 6 and is divided into two parts, and partly lies in drainage blanket 16, and another part lies in biological detention pond body 1 outside for the biological detention pond ammonia nitrogen clearance 69.42% of handling distributed sewage treatment facility tail water, total nitrogen clearance > 90%, total phosphorus clearance > 70%.
Preferably, the distance between the reducing tee 7 and the reducing tee 7 is 800 and 1200 mm;
by the scheme, the distance between the reducing tee 7 and the reducing tee 7 is ensured, so that the distance between the water distribution branch pipes 8 is ensured, and reasonable and uniform distribution of water distribution can also be ensured;
the optimal selection is that the distance between the reducing tee 7 and the reducing tee 7 is 1000 mm;
preferably, the water distribution branch pipe 8 is provided with at least 6 water outlets 9 at equal intervals, the distance between each water outlet 9 and each water outlet 9 is 350-450mm, and the aperture of each water outlet 9 is 3-6 mm;
through the scheme, reasonable water spraying can be ensured through reasonable arrangement of the water outlet holes 9 of the water distribution branch pipes 8, and the size of the water outlet holes can influence the treatment effect of tail water;
the optimal selection is that the water distribution branch pipe 8 is provided with 8 water outlet holes 9 at equal intervals, the distance between the water outlet holes 9 and the water outlet holes 9 is 400mm, and the aperture of the water outlet hole 9 is 5 mm;
preferably, the bioretention pond body 1 is plastered with a deashing brick layer 18 through cement mortar.
Preferably, the ball valve 10 is arranged at the tail end of the straight pipe section of the water distribution main pipe 6, the opening and closing of the ball valve can be easily controlled, and the type Qv347 ball valve is optimally selected.
Preferably, still including setting up the aeration equipment 11 in 6 one sides of the water distribution person in charge, the utility model discloses choose for use efficient fluidic device as aeration equipment 11, in sewage treatment, can transmit oxygen/gas high-efficiently in the aeration tank of any degree of depth, extensively be applicable to city domestic sewage and industrial waste water treatment, it is especially obvious to the waste water treatment of high concentration. The pressurized working (power) fluid enters the jet cavity from the inlet of the jet device to form high-speed jet fluid. The high velocity fluid creates a pressure drop that causes the substance (liquid/gas) to be added to be drawn from the suction port and into the working fluid. The mixed liquor thus formed passes through the diffuser section to the ejector outlet, where the flow rate slows down the pressure rise (but below the inlet pressure). The GW Venturi ejector has high mixing efficiency and wide working pressure range. The liquid or gas can be sucked in under negative pressure only by a small pressure difference between the inlet and the outlet.
Preferably, the thickness of the retention layer 13 is 280-320mm, the thickness of the filtration layer 14 is 380-420mm, the thickness of the transition layer 15 is 260-320mm and the thickness of the drainage layer 16 is 180-220 mm.
In the best embodiment, the thickness of the detention layer 13 is 300mm, the thickness of the filtering layer 14 is 400mm, the thickness of the transition layer 15 is 300mm and the thickness of the drainage layer 16 is 200mm, the device is composed of aquatic plants, the filtering layer (fine sand), the transition layer (fine sand and coarse sand), the submergence layer (coarse sand and 5% wood dust) and the drainage layer (gravel) which are sequentially arranged in the vertical direction, and the point source polluted water quality is improved and the river point source pollution is reduced through the physical, chemical and biological effects of soil, plants, filtering materials and microorganisms.
The aquatic plant in the biological detention pond is preferably perennial aquatic plant suitable for local climate and water quality conditions, such as floating plant preferably flos Nymphaeae, emergent aquatic plant preferably canna, Thalictrum aquilegifolium, Iris acorus, etc. The stem and root combined type oxygen-enriched water purifier has the functions of absorbing and purifying external and internal source pollutants in a water body, and simultaneously generates oxygen through photosynthesis, the oxygen is conveyed and released into the water body through the stems and the roots, an aerobic area can be formed around the root hairs, the dissolved oxygen in the water body is increased, and the oxygen required by degrading pollutants is supplied to microorganisms and the like. Through the effects of adsorption, precipitation, filtration, absorption, transformation and the like of plant roots and microorganisms, the transparency of the water body is improved, and the concentration of pollutants such as organic matters, nutritive salts, heavy metals and the like is effectively reduced.
Preferably, the upper part of the well body 2 is provided with a tail water inlet 12 of the distributed water treatment equipment.
TABLE 1 Table of average concentration of water in and out at steady state operation
| Inflow (mg/L) | Water outlet (mg/L) | Removal Rate (mg/L) | |
| COD | 1245 | 185 | 85.1 |
| Ammonia nitrogen | 69.8 | 4.3 | 93.4 |
| TKN | 161.8 | 25.8 | 83.9 |
| N01--N | 0 | 2.1 | / |
| N02--N | 0 | 35.3 | / |
| N0x--N | 0 | 37.4 | / |
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (8)
1. The utility model provides a biological detention pond for handling distributed sewage treatment facility tail water, includes biological detention pond body and sets up the immersible pump in the well body, its characterized in that:
the submersible pump is communicated with a port arranged in one side wall surface of the biological retention tank body through a pipeline, the port is communicated with the main water distribution pipe, reducing tees are arranged on the main water distribution pipe at equal intervals, and the reducing tees are communicated with one end of the branch water distribution pipe;
this internal from last to having set gradually detention layer, filter layer, transition layer and drainage blanket and HDPE prevention of seepage membrane down of biological detention pond, transition layer and drainage blanket are as submerging the layer, and the high delivery port that is responsible for through the water distribution of submerging the layer highly sets up the realization, the water distribution is responsible for and is divided into two parts, and partly lies in the drainage blanket, and another part lies in biological detention pond body outside.
2. A bioretention pond for treating tail water from a decentralized sewage treatment plant according to claim 1 wherein: the distance between the reducing tee and the reducing tee is 800-1200 mm.
3. A bioretention pond for treating tail water from a decentralized sewage treatment plant according to claim 1 wherein: the water distribution branch pipe equidistance leaves and has seted up 6 apopores at least, and the distance between apopore and the apopore is 350 and adds 450mm, and the apopore aperture is 3-6 mm.
4. A bioretention pond for treating tail water from a decentralized sewage treatment plant according to claim 1 wherein: the bioretention pond body is plastered through cement mortar and is laid with deashing brick layer.
5. A bioretention pond for treating tail water from a decentralized sewage treatment plant according to claim 1 wherein: and the tail end of the straight pipe section of the water distribution main pipe is provided with a ball valve.
6. A bioretention pond for treating tail water from a decentralized sewage treatment plant according to claim 1 wherein: also comprises an aeration device arranged on one side of the water distribution main pipe.
7. A bioretention pond for treating tail water from a decentralized sewage treatment plant according to claim 1 wherein: the thickness of the retention layer is 280-320mm, the thickness of the filter layer is 380-420mm, the thickness of the transition layer is 260-320mm and the thickness of the drainage layer is 180-220 mm.
8. A bioretention pond for treating tail water from a decentralized sewage treatment plant according to claim 1 wherein: and the upper part of the well body is provided with a tail water inlet of the distributed water treatment equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020252696.8U CN212174590U (en) | 2020-03-04 | 2020-03-04 | Biological retention tank for treating tail water of distributed sewage treatment facility |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020252696.8U CN212174590U (en) | 2020-03-04 | 2020-03-04 | Biological retention tank for treating tail water of distributed sewage treatment facility |
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| CN212174590U true CN212174590U (en) | 2020-12-18 |
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| CN202020252696.8U Expired - Fee Related CN212174590U (en) | 2020-03-04 | 2020-03-04 | Biological retention tank for treating tail water of distributed sewage treatment facility |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111362411A (en) * | 2020-03-04 | 2020-07-03 | 江苏东恒环境控股有限公司 | Biological retention tank for treating tail water of distributed sewage treatment facility |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111362411A (en) * | 2020-03-04 | 2020-07-03 | 江苏东恒环境控股有限公司 | Biological retention tank for treating tail water of distributed sewage treatment facility |
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| CF01 | Termination of patent right due to non-payment of annual fee |