CN210216634U

CN210216634U - Urban rainwater and sewage diversion system

Info

Publication number: CN210216634U
Application number: CN201920534523.2U
Authority: CN
Inventors: Jun Xu; 徐隽; Zhongmei Gu; 顾忠美; Minhui Hu; 胡敏慧; Changlin Wu; 吴昌林; Bo Xu; 徐博; Ruiping Wang; 王瑞萍
Original assignee: Nanjing Tongli Construction Group Co Ltd
Current assignee: Nanjing Tongli Construction Group Co Ltd
Priority date: 2019-04-18
Filing date: 2019-04-18
Publication date: 2020-03-31
Anticipated expiration: 2029-04-18

Abstract

The utility model discloses an urban rainwater and sewage diversion system, belonging to the field of rainwater diversion systems, which has the technical proposal that the system comprises a natural drainage system, a rainwater garden system, a permeable pavement and a sewage treatment tank, the natural drainage system comprises a vegetation depression, a plurality of first collecting pipelines are arranged in soil of the vegetation depression, the rainwater garden system comprises a flower bed for urban greening, a second collecting pipeline is arranged at the bottom of the flower bed, a drainage pipeline is arranged under the permeable pavement, a collecting main pipe is arranged on the sewage treatment tank, the first collecting pipeline, the second collecting pipeline and the drainage pipeline are all connected with the collecting main pipe, the urban rainwater and sewage diversion system has the advantages that the concept utilization of sponge city construction is integrated into the rainwater and sewage diversion design, rainwater and sewage diversion and sponge city construction are combined, and the maintenance and construction cost of drainage facilities is reduced.

Description

Urban rainwater and sewage diversion system

Technical Field

The utility model relates to a rainwater reposition of redundant personnel system, in particular to city distribution of rain and sewage system.

Background

With the rapid development of social economy, practical city construction and design are important factors for improving the overall appearance and functions of cities. Urban drainage and sewage treatment are closely related to the lives of common people. In a rainstorm road, water is seriously polluted, urban river channels are stink, the practical urban call is higher and higher, and the practicability pursued in urban construction is reflected by urban drainage and water treatment. The research on how the urban water treatment is suitable for urban development is carried out, so that the life quality of people is really improved. A sewage pipe network system is generally used in a city, rainwater and sewage use the same sewage discharge pipeline, so that part of sewage is discharged into a river channel, and the water environment is deteriorated; meanwhile, a large amount of rainwater enters the sewage pipe network system to bring overlarge load to a sewage treatment plant, and the low-concentration combined water also brings about not little challenge to the operation of the sewage treatment plant.

At present, domestic attempts are made to change a drainage system to separate rainwater and sewage, and the rainwater and the sewage are respectively conveyed by a pipeline and then discharged or subjected to subsequent treatment, so that domestic rainwater and sewage flow distribution really achieves a qualitative result, but the pressure of a collecting water body main pipe is not considered, and rapid collection cannot be achieved. Often some reality pendulum are in the front, and the city road drainage is not smooth when rainstorm comes, only opens sewage well lid, lets a large amount of rainwater sneak into sewage system, and sewage treatment plant can only change water and arrange into the river course and then to river course secondary pollution. After the rain and sewage diversion is well transformed in many areas, only sewage purification is achieved, the long-term flood control and waterlogging resistance are really considered, and the fundamental problems of waterlogging and rainwater physical utilization are not really solved in the district after the rain and sewage diversion is transformed.

Current rain sewage reposition of redundant personnel system need reform transform a large amount of pipelines and drainage equipment to having compromise pollution treatment ability and flood discharge ability, having required to carry out omnidirectional transformation to original drainage pipe, the construction volume is big, and the construction cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a city distribution of rain and sewage system has merged into distribution of rain and sewage design with the theory utilization of sponge city construction, combines together distribution of rain and sewage and sponge city construction, reduces the maintenance and the construction cost of drainage facility.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides an urban rainwater and sewage diversion system, includes natural drainage system, rainwater garden system, permeable road surface and sewage treatment pond, natural drainage system includes the vegetation depression, be provided with a plurality of first collection pipelines in the soil of vegetation depression, rainwater garden system is including the flower bed that is used for urban afforestation, the bottom of flower bed is provided with the second and collects the pipeline, be provided with drainage pipe under the permeable road surface, be provided with on the sewage treatment pond and collect the house steward, first collection pipeline, second collection pipeline and drainage pipe all with collect house steward and be connected.

By adopting the technical scheme, the natural drainage system mainly retains rainwater by depending on a vegetation depression, and supplements underground water by filtering plants and infiltrating soil; the rainwater garden system is an engineering measure for planting shrubs, flowers and plants, even trees and other plants in a shallow depression area, is generally applied to residential areas and commercial environments, and mainly utilizes the filtration and rainwater infiltration of soil and plants of a flower bed to reduce runoff and beautify the environment; the permeable pavement enables rainwater to permeate downwards, the rainwater flows into the drainage pipeline, engineering measures of surface runoff are directly reduced, landscape and greening occupied areas are reasonably utilized to build small-sized domestic sewage treatment equipment or build an artificial wetland, domestic sewage treatment of the land is achieved, purified water is stored underground or is discharged to a nearby river channel, reasonable utilization of water resources is achieved, and maintenance and construction costs of drainage facilities are reduced.

Further, the vegetation depression comprises an improved soil layer for planting landscape plants, and the improved soil layer is formed by mixing local original soil and foreign improved soil.

By adopting the technical scheme, due to the limitation of regions, local original soil may have some defects, such as poor fertility or poor water retention performance of original soil, so that loam or artificial soil with good texture is used as soil dressing, and after the soil dressing and the original soil are mixed, the water retention and the fertility of the soil are improved, thereby being beneficial to the survival of vegetation on the one hand and preventing water and soil loss on the other hand.

Furthermore, an underground water storage cavity is arranged below the improved soil layer, and the first collecting pipeline is communicated with the underground water storage cavity.

Through adopting above-mentioned technical scheme, the rainwater infiltration permeates the improvement soil horizon, and the rainwater flows into groundwater storage chamber, and the rainwater supplements groundwater, and the excessive rainwater flows into the collection house steward through first collecting tube in, flows into sewage treatment plant's sewage treatment pond at last.

Furthermore, an overflow pipe for dredging rainwater is arranged between the improved soil layer and the underground water storage cavity.

Through adopting above-mentioned technical scheme, the rainwater of infiltration flows into groundwater storage cavity through the overflow pipe in the improvement soil horizon.

Further, be provided with artifical soil horizon in the flower bed, the below on artifical soil horizon is provided with the filter layer, the filter layer uses the activated carbon sediment to pave and fills up and form.

By adopting the technical scheme, the activated carbon residue has large surface area and finer pores in the carbon granules, so that the activated carbon residue can adsorb one or more substances in water, such as organic substances, synthetic detergents, microorganisms, viruses and a certain amount of heavy metals, and the rainwater is purified.

Further, be provided with the culvert pipe in the filter layer, the culvert union coupling has domestic sewage treatment box, the second collection pipeline sets up at domestic sewage treatment box.

Through adopting above-mentioned technical scheme, the rainwater major part is all absorbed by artifical soil horizon, and unnecessary rainwater flows into domestic sewage treatment case through the culvert pipe in, through secondary filter, later during the rainwater collects the pipeline through the second and converges sewage treatment plant, carries out final treatment, reaches the running water standard.

Further, the permeable pavement comprises asphalt pavement, and the asphalt pavement is paved by using permeable asphalt.

By adopting the technical scheme, rainwater can seep below the pavement, and surface runoff is directly reduced.

Further, the below on bituminous paving is provided with the cement grid board, it has the rubble to fill in the net of cement grid board, drainage pipe passes through the water drainage way and links to each other with the cement grid board.

Through adopting above-mentioned technical scheme, the cement grid plate is used for supporting the road surface on the one hand, and on the other hand is filled with the rubble in the net of cement grid plate, has the clearance between the rubble, and the rainwater can pass in the clearance flows into the water drainage, discharges through drainage pipe again.

To sum up, the utility model discloses following beneficial effect has:

1. by arranging the natural drainage system, the rainwater garden system, the permeable pavement and the sewage treatment pool, the concept of sponge city construction is integrated with a rainwater and sewage diversion design, the rainwater and sewage diversion is combined with the sponge city construction, and the maintenance and construction cost of drainage facilities is reduced;

2. through the setting on improvement soil horizon, after foreign soil and former soil mix, improve soil water retention and fertility, be favorable to the vegetation to survive on the one hand, on the other hand prevents soil erosion and water loss.

Drawings

Fig. 1 is a schematic structural diagram of a city rain and sewage diversion system.

In the figure, 1, a natural drainage system; 11. a vegetation depression; 12. improving the soil layer; 121. an overflow pipe; 13. a groundwater storage chamber; 14. a first collection conduit; 2. a rain garden system; 21. flower bed; 211. an artificial soil layer; 212. a filter layer; 213. a culvert pipe; 22. a second collection conduit; 23. a domestic sewage treatment tank; 3. a permeable pavement; 31. an asphalt pavement; 32. a cement grid plate; 321. crushing stone; 33. a water discharge pipeline; 331. a water drain; 4. a sewage treatment tank; 41. a collection manifold.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): a city rain and sewage diversion system is shown in figure 1 and comprises a natural drainage system 1, a rainwater garden system 2, a permeable pavement 3 and a sewage treatment pool 4, wherein the natural drainage system 1 and the rainwater garden system 2 retain rainwater by means of natural plants, and simultaneously, rainwater is filtered, small-sized domestic sewage treatment equipment or artificial wetland is built for reasonably utilizing the occupied landscape and greening regions, so that the domestic sewage treatment of the land is realized, purified water is stored underground or discharged to a nearby river channel, and the reasonable utilization of water resources is realized.

As shown in fig. 1, the natural drainage system 1 includes a vegetation depression 11, landscape plants are provided on the vegetation depression 11, the vegetation depression 11 includes a modified soil layer 12, and the landscape plants are planted on the modified soil layer 12. The improved soil layer 12 is formed by mixing local original soil and local improved soil, and due to regional limitations, for example, in northwest China, the local original soil has poor fertility or poor water retention performance, so that loam or artificial soil with good texture is required to be used as soil dressing, and after the soil dressing is mixed with the original soil, the water retention and fertility of the soil are improved.

As shown in fig. 1, a groundwater storage cavity 13 is excavated in a soil layer below the modified soil layer 12, an overflow pipe 121 is arranged between the groundwater storage cavity 13 and the modified soil layer 12, the overflow pipe 121 is mainly used for dredging leaked rainwater, the top end of the overflow pipe 121 is located in the modified soil layer 12, and a first collecting pipeline 14 for draining water is connected to the side surface of the groundwater storage cavity 13. One part of rainwater is absorbed by vegetation, the other part of rainwater infiltrates through the improved soil layer 12, the rainwater flows into the underground water storage cavity 13, the rainwater supplements the underground water, and the excessive rainwater is discharged through the first collecting pipeline 14.

As shown in fig. 1, the rainwater garden system 2 includes a flower bed 21, and the flower bed 21 is generally disposed in an urban trade space or a living district. The flower bed 21 is provided with an artificial soil layer 211, a filter layer 212 is laid below the artificial soil layer 211, the filter layer 212 adopts activated carbon slag as a raw material, the activated carbon slag has a large surface area, and finer holes are formed in carbon particles, so that the activated carbon slag has good adsorption and filtration performance, and when rainwater permeates into the filter layer 212, the filtration is completed. Most of the rainwater is absorbed by the artificial soil layer 211, and the excessive rainwater permeates into the filter layer 212.

As shown in fig. 1, a culvert 213 is provided in the filter layer 212, the culvert 213 is connected to the domestic sewage treatment tank 23, and the second collecting duct 22 is installed on the domestic sewage treatment tank 23. The rainwater flows into the culvert 213 through the filter layer 212, and then is injected into the domestic sewage treatment tank 23 to be filtered.

As shown in fig. 1, the permeable pavement 3 comprises an asphalt pavement 31 and a cement grid plate 32, the asphalt pavement 31 is laid on the cement grid plate 32, broken stones 321 are filled in meshes of the cement grid plate 32, a water discharge channel 331 is arranged below the cement grid plate 32, and a plurality of water discharge pipes 33 are vertically arranged at the bottom of the water discharge channel 331. Rainwater can seep below the road surface, surface runoff is directly reduced, and the rainwater flows into the drainage pipeline 33 through gaps of the broken stones 321.

As shown in fig. 1, the sewage treatment tank 4 is provided in a sewage treatment plant, the sewage treatment tank 4 is connected to a collecting main 41, and the first collecting duct 14, the second collecting duct 22, and the water discharge duct 33 are all connected to the collecting main 41. The small-sized domestic sewage treatment equipment or the constructed wetland is built in the areas occupied by landscape and greening reasonably, so that the domestic sewage treatment of the land is realized, the purified water is stored underground or discharged to a nearby river channel, and the reasonable utilization of water resources is realized.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a city distribution of rain and sewage system which characterized in that: including natural drainage system (1), rainwater garden system (2), permeable pavement (3) and sewage treatment pond (4), natural drainage system (1) is including vegetation depression (11), be provided with a plurality of first collection pipeline (14) in the soil of vegetation depression (11), rainwater garden system (2) is including flower bed (21) that are used for the urban afforestation, the bottom of flower bed (21) is provided with second collection pipeline (22), be provided with drainage pipe (33) under permeable pavement (3), be provided with on sewage treatment pond (4) and collect house steward (41), first collection pipeline (14), second collection pipeline (22) and drainage pipe (33) all are connected with collection house steward (41).

2. The urban rain and sewage diversion system of claim 1, wherein: the vegetation depression (11) comprises a modified soil layer (12) for planting landscape plants, and the modified soil layer (12) is formed by mixing local original soil and modified soil outside.

3. The urban rain and sewage diversion system of claim 2 wherein: an underground water storage cavity (13) is arranged below the improved soil layer (12), and the first collecting pipeline (14) is communicated with the underground water storage cavity (13).

4. The urban rain and sewage diversion system of claim 3, wherein: an overflow pipe (121) for dredging rainwater is arranged between the improved soil layer (12) and the underground water storage cavity (13).

5. The urban rain and sewage diversion system of claim 1, wherein: be provided with artifical soil horizon (211) in flower bed (21), the below of artifical soil horizon (211) is provided with filter layer (212), filter layer (212) use activated carbon sediment bedding to form.

6. The urban rain and sewage diversion system of claim 5, wherein: a culvert pipe (213) is arranged in the filter layer (212), the culvert pipe (213) is connected with a domestic sewage treatment tank (23), and the second collecting pipeline (22) is arranged in the domestic sewage treatment tank (23).

7. The urban rain and sewage diversion system of claim 1, wherein: the permeable pavement (3) comprises an asphalt pavement (31), and the asphalt pavement (31) is formed by paving permeable asphalt.

8. The urban rain and sewage diversion system of claim 7 wherein: the below of bituminous paving (31) is provided with cement net check board (32), it has rubble (321) to fill in the net of cement net check board (32), drainage pipe (33) link to each other with cement net check board (32) through water drainage (331).