CN210369236U - Gutter inlet with initial rainwater sewage interception function - Google Patents
Gutter inlet with initial rainwater sewage interception function Download PDFInfo
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- CN210369236U CN210369236U CN201920741293.7U CN201920741293U CN210369236U CN 210369236 U CN210369236 U CN 210369236U CN 201920741293 U CN201920741293 U CN 201920741293U CN 210369236 U CN210369236 U CN 210369236U
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Abstract
The utility model relates to a gutter inlet with initial rainwater dirt-intercepting function, which comprises an inner well, an outer well and a connecting pipe, wherein the inner well is arranged in the outer well, a gap is arranged between the outer wall of the inner well and the inner wall of the outer well, and the gap forms a water storage tank; one end of the connecting pipe penetrates through the outer well, the water storage tank and the inner well in sequence and then is connected to the bottom of the inner well, and the other end of the connecting pipe is connected to the rainwater inspection well; the outer well is built by adopting waterproof concrete; the inner well is built by mortar with pores. The utility model has the advantages that: early rainwater with high pollutant content in the early stage of rainfall is collected in time, and urban non-point source pollution is reduced; the inner well is built by mortar with pores, clean rainwater after pollutant precipitation can be slowly released into the inner cavity of the inner well, and water is automatically emptied and stored; the gutter inlet has the advantages of good intercepting effect, simple structure, simple and easy construction, less engineering investment, no need of additionally occupying land and the like.
Description
Technical Field
The utility model relates to a drainage engineering technical field especially relates to a inlet for stom water with initial stage rainwater cuts dirty function.
Background
With the rapid development of economy in China, the urbanization process is accelerated continuously, and although the urban industrial development creates huge wealth for human beings, a series of environmental pollution problems are generated at the same time, wherein the non-point source pollution problem generated by rainwater in the initial stage of the city is more and more emphasized by environmental workers.
Initial rain, i.e. rain formed during the early stages of rainfall, the formation of early rainfall pollutants is mainly achieved through the following two ways:
1. urban industrial enterprises discharge a large amount of waste gas into the atmosphere, and simultaneously along with the increase of the holding capacity of urban automobiles, a large amount of automobile tail gas enters the air, once rainfall occurs, harmful substances in polluted gas are dissolved in rainwater and fall to the ground along with the rainfall, so that non-point source pollution is formed;
2. the hardening area of modern cities is relatively large, relatively high heavy metal, grease and suspended solids are attached to the hardened ground, and when the hardened ground is washed by rainfall, initial rainwater wrapped with pollutants flows into a rainwater pipe network and is finally discharged into river channels or urban water areas without treatment to pollute the urban water areas, so that the serious problems of eutrophication and the like are caused, and the method becomes an urgent problem of water pollution of modern cities.
At present, overflow pollutants of a combined drainage system and initial rainwater discharged by a split drainage system in some urban areas become main pollution sources of inland rivers. In the eastern coastal cities of developed heavy industry and traditional manufacturing industry, industrial parks are densely distributed, and in rainy days, rainwater scours polluted ground or storage yard to become sewage instantly, and directly flows to rivers, lakes and seas from rainwater pipelines to cause huge environmental pollution. In 2015, China issued 'action plan for water pollution prevention and control', wherein clear proposals are made for collecting initial rainwater, and then treating and recycling the rainwater.
At present, the methods for treating the initial rainwater of the city at home and abroad comprise the following steps:
1. rainwater infiltration facility
Rain water permeating facilities such as sponge facilities like permeable pavement, concave greenbelts, grass planting ditches and the like are added, the rain water in the initial stage is intercepted and permeated in the early stage of rainfall, the pollutants are permeated and purified by utilizing the soil, and the pollution treatment load of a subsequent treatment system is reduced.
2. Sewage treatment plant is carried after rainwater is amassed
The utilization is with natural depression in the city, pond, park pond etc. rebuild into rainwater regulation pond, temporarily dams, collects, saves the regulation pond with the higher initial stage rainwater of pollutant concentration, treats after the rainfall, carries the rain sewage of storing in the regulation pond to sewage treatment plant through sewage conduit again and handles. The purposes of controlling non-point source pollution and protecting water bodies are achieved.
3. Rainwater accumulation in situ treatment
Initial rainwater can be intercepted by water storage systems such as a natural ditch, a wet pond, an artificial wetland and the like, and pollutants in the initial rainwater can be removed by utilizing a soil-microorganism-plant ecological system. The artificial wetland is a sewage treatment facility integrating physical and chemical treatment and biological treatment, the aquatic plants in the artificial wetland absorb substances such as nitrogen, phosphorus and the like in rainwater, and bacteria at the roots of the aquatic plants can effectively degrade organic pollutants in the rainwater; the gravel, the sand and the root system of the plants in the wetland play a certain role in filtering the solid suspended matters of the initial rainwater.
However, the above method also has some disadvantages in practical operation:
1. the infiltration method is limited by the soil infiltration capacity, requires a large permeable area, has a tight land area, and cannot be effectively implemented by using cities with few greenbelts;
2. the permeable pavement is easy to block and difficult to clean and recover after being blocked;
3. the mode that the rainwater was amassed needs to be built the great regulation pond of area in the city, causes the land used nervous on the one hand, and on the other hand carries the rainwater to the sewage plant and handles and also can increase sewage plant operation load, increase cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a gutter inlet with initial rainwater cuts dirty function is provided to overcome not enough among the above-mentioned prior art.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a gutter inlet with an initial rainwater and sewage intercepting function comprises an inner well, an outer well and a connecting pipe, wherein the inner well is arranged in the outer well, a gap is formed between the outer wall of the inner well and the inner wall of the outer well, and a water storage tank is formed in the gap; one end of the connecting pipe penetrates through the outer well, the water storage tank and the inner well in sequence and then is connected to the bottom of the inner well, and the other end of the connecting pipe is connected to the rainwater inspection well; the outer well is built by adopting waterproof concrete; the inner well is built by mortar with pores.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
In the scheme, the top surface of the inner well is provided with the counter-slope overflow weir, and the slope of the counter-slope overflow weir slopes to the water storage tank.
In the scheme, the device also comprises a rainwater grate which covers the well mouth of the inner well, the well mouth of the outer well and the notch of the water storage tank.
In the scheme, the density of the rainwater grate facing the notch of the water storage tank is higher than that of other areas.
In the above scheme, the direction of the grate holes in the long side direction of the rainwater grate is vertical to the direction of the grate holes in the middle of the rainwater grate.
The utility model has the advantages that:
1. early rainwater with high pollutant content in the early stage of rainfall is collected in time, and urban non-point source pollution is reduced;
2. the reverse slope overflow weir is arranged, so that the initial rainwater collection efficiency is accelerated, and the rainwater at the middle and later stages can not enter the connecting pipe while the initial rainwater is collected;
3. the inner well is built by mortar with pores, clean rainwater after pollutant precipitation can be slowly released into the inner cavity of the inner well, and water is automatically emptied and stored;
4. by adopting the rainwater grate of the utility model, the pore space of the grate hole is reduced, and the porosity is increased, thereby improving the initial rainwater receiving capacity and the impurity interception effect;
5. the gutter inlet has the advantages of good intercepting effect, simple structure, simple and easy construction, less engineering investment, no need of additionally occupying land and the like.
Drawings
Fig. 1 is a schematic structural view of a gutter inlet with an initial rainwater dirt intercepting function according to the present invention;
fig. 2 is a sectional view of the gutter inlet with initial rainwater dirt blocking function of the present invention;
fig. 3 is a partial structure view of the gutter inlet with initial rainwater dirt-intercepting function of the present invention;
fig. 4 is a schematic structural view of the rain grate of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the device comprises an inner well, 110, a reverse slope overflow weir, 2, an outer well, 3, a connecting pipe, 4, a water storage tank, 5, a rainwater grate, 510 and grate holes.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 4, the gutter inlet with the initial rainwater dirt blocking function comprises an inner well 1, an outer well 2 and a connecting pipe 3, wherein the inner well 1 is arranged in the outer well 2, a gap is formed between the outer wall of the inner well 1 and the inner wall of the outer well 2, the gap forms a water storage tank 4, and the wall thickness of the inner well 1 and the wall thickness of the outer well 2 are both preferably 120mm in a normal condition. The one end of connecting pipe 3 inserts well 1 bottom in the interior after passing outer well 2, catch basin 4 and interior well 1 in proper order, and the other end of connecting pipe 3 is located the outside of outer well 2, and connecting pipe 3 is used for carrying the rainwater that the inlet for stom water collected to the rainwater trunk.
The outer well 2 is formed by pouring concrete and is coated with waterproof mortar to prevent rainwater from penetrating and eroding the roadbed; the inner well 1 is formed by pouring mortar mixed with certain sand and stone, so that certain pores are formed, the inner well has permeability, initial rainwater in the water storage tank 4 can permeate into the inner well 1 slowly through the pores, the rainwater in the water storage tank 4 can permeate into the inner cavity of the inner well 1 slowly through the wall surface of the inner well 1, certain filtering effect is generated in sand and stone gaps of the inner well 1, suspended substances in water are further filtered, after rainfall is completed, the rainwater in the inner well 1 can be emptied under the action of evaporation and the slow permeation of the rainwater, and the water collecting volume is emptied before the next rainfall.
The water storage tank 4 is preferably in a shape like a Chinese character 'hui', the water storage tank 4 is the core part of the rainwater port and has the functions of collecting initial rainwater and storing the rainwater for a period of time for slow degradation, the width of the water storage tank 4 is 100mm, a certain water storage volume is provided, the volume requirement of the initial rainwater volume is approximately met, and the width of the water storage tank 4 can be properly increased in areas with frequent rainfall or large rainfall.
The top surface of the inner well 1 is provided with a reverse slope overflow weir 110, the slope of the reverse slope overflow weir 110 slopes towards the water storage tank 4 to form a funnel-shaped water falling structure, so that rainwater flowing onto the inner well 1 reversely falls, and initial rainwater is completely collected as far as possible. The top surface of the inner well 1 is lower than or parallel to the top surface of the outer well 2, and after the water storage tank 4 is full of water, rainwater overflows into the inner well 1 to be collected conventionally. After rainfall, the suspended solid in the rainwater is precipitated in the water storage tank 4, the pollutants are degraded by the microorganisms in the rainwater, and the content of the pollutants in the water is gradually reduced.
The rainwater inlet with the initial rainwater sewage interception function further comprises a rainwater grate 5, the rainwater grate 5 covers the well mouth of the inner well 1, the well mouth of the outer well 2 and the notch of the water storage tank 4, the rainwater grate 5 just faces the density of the notch of the water storage tank 4 and is large in density of other areas, namely, the rainwater grate 5 is of a peripheral encryption type, the holes of grate holes 510 above the water storage tank 4 are reduced, the number of grate holes 510 which are perpendicular to the middle and short in clearance are increased on the periphery, the scum which enters can be effectively isolated from rainwater, and the water storage tank 4 is prevented from being blocked. The orientation of the grate holes 510 in the longitudinal direction of the rain grate 5 is perpendicular to the orientation of the grate holes 510 in the middle of the rain grate 5, and the porosity is increased.
When rainfall happens, rainwater flows into the rainwater inlet through the gradient of the road surface, the flow rate of the initial rainwater is smaller, more pollutants are contained, the rainwater firstly flows in from the edge of the rainwater grate 5, passes through the grate holes 510 on the periphery of the rainwater grate 5 and falls into the water storage tank 4, the slope of the anti-slope overflow weir 110 at the top of the inner well 1 slopes towards the water storage tank 4, a funnel-shaped water falling structure is formed, and the initial rainwater can be collected completely. The water storage tank 4 has a certain volume, initial rainwater is collected as far as possible until the space in the whole tank is full, after water is stored fully, the rainwater crosses over the rainfall initial stage at the moment, the rainwater directly overflows into the inner cavity of the inner well 1, the content of pollutants in the rainwater is greatly reduced at the moment, the rainwater can be directly discharged into the connecting pipe 3, and the rainwater is discharged into the urban rainwater pipeline through the connecting pipe 3.
After precipitation is finished, the water storage tank 4 forms a natural sludge biochemical reaction tank to finish microbial degradation of partial pollutants, the inner well 1 with certain porosity is equivalent to a porous filter, suspended matters in the rainwater are further filtered in the process of slowly permeating the rainwater in the water storage tank 4, and the rainwater in the water storage tank 4 is gradually emptied under the dual functions of evaporation and permeation to ensure the water receiving volume during next precipitation.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (5)
1. The gutter inlet with the initial rainwater and sewage intercepting function is characterized by comprising an inner well (1), an outer well (2) and a connecting pipe (3), wherein the inner well (1) is arranged in the outer well (2), a gap is formed between the outer wall of the inner well (1) and the inner wall of the outer well (2), and a water storage tank (4) is formed in the gap; one end of the connecting pipe (3) penetrates through the outer well (2), the water storage tank (4) and the inner well (1) in sequence and then is connected to the bottom of the inner well (1), and the other end of the connecting pipe (3) is connected to the rainwater inspection well; the outer well (2) is built by adopting waterproof concrete; the inner well (1) is built by adopting mortar with pores.
2. A gutter inlet with initial rainwater sewage intercepting function according to claim 1, characterized in that the top surface of the inner well (1) is provided with an anti-slope overflow weir (110), and the anti-slope overflow weir (110) slopes towards the water storage tank (4).
3. A gutter inlet with initial rainwater sewage intercepting function according to claim 2, characterized in that it further comprises a rainwater grate (5), and the rainwater grate (5) covers the well mouth of the inner well (1), the well mouth of the outer well (2) and the notch of the water storage tank (4).
4. A gutter inlet with initial rainwater dirt intercepting function according to claim 3, characterized in that the density of the rainwater grate (5) facing the opening of the water storage tank (4) is higher than that of other areas.
5. A gutter inlet with initial rainwater drainage function according to claim 3 or 4, characterized in that the orientation of the grate holes (510) in the longitudinal direction of the rainwater grate (5) is perpendicular to the orientation of the grate holes (510) in the middle of the rainwater grate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920741293.7U CN210369236U (en) | 2019-05-22 | 2019-05-22 | Gutter inlet with initial rainwater sewage interception function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920741293.7U CN210369236U (en) | 2019-05-22 | 2019-05-22 | Gutter inlet with initial rainwater sewage interception function |
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| Publication Number | Publication Date |
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| CN210369236U true CN210369236U (en) | 2020-04-21 |
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| CN201920741293.7U Active CN210369236U (en) | 2019-05-22 | 2019-05-22 | Gutter inlet with initial rainwater sewage interception function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115653065A (en) * | 2022-11-02 | 2023-01-31 | 中核华纬工程设计研究有限公司 | Rainwater collecting and recycling system, control method and integrated control box |
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2019
- 2019-05-22 CN CN201920741293.7U patent/CN210369236U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115653065A (en) * | 2022-11-02 | 2023-01-31 | 中核华纬工程设计研究有限公司 | Rainwater collecting and recycling system, control method and integrated control box |
| CN115653065B (en) * | 2022-11-02 | 2023-10-10 | 中核华纬工程设计研究有限公司 | Rainwater collecting and recycling system, control method and integrated control box |
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