A rain garden system for anti-clogging sponge city construction

A technology for rain gardens and sponge cities, applied in waterway systems, sewer systems, horticulture, etc., can solve the problems of poor permeability of planting soil layers and artificial filling layers, poor permeability of the overall structure of rain gardens, and limited removal capacity, etc. Achieve the effect of improving water purification function, benefiting water purification and improving water permeability

Active Publication Date: 2021-08-03
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing rain garden technology still has the following shortcomings: the ability to remove organic pollutants and nitrogen and phosphorus contained in rainwater, especially the initial rainwater surface runoff is limited; in the actual use process, some light debris on the ground Or sand, stones, and solid debris can easily flow into the rain garden with rainwater, and it is easy to cause blockage of the permeable surface layer during the infiltration process, resulting in a decrease in water permeability, which requires timely flushing and maintenance and is difficult to maintain; the rain garden The planting soil layer and artificial filling layer have poor permeability, and the overall structure of the rain garden has low permeability

Method used

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  • A rain garden system for anti-clogging sponge city construction

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] An anti-clogging sponge city construction rainwater garden system is designed according to the following structural parameters:

[0034] The initial rainwater surface runoff is discarded and then discharged into the municipal sewage pipe network (or the combined rainwater and sewage pipe network) for centralized treatment by the sewage treatment plant. The design volume of the initial rainfall runoff is calculated according to the runoff thickness of 6mm in the abandoned well by the improved volumetric method. A liquid level float switch is installed in the well to control the water inlet and outlet valves. When the abandoned flow well is full, the water inlet valve is closed, and the rainwater continues to flow into the aquifer 1 of the rain garden system through the rainwater pipe. The initial rainwater in the abandonment well flows slowly through the drain pipe within 18 hours. When the liquid level in the abandonment well is lower than 10%, the valve of the rainwate...

Embodiment 2

[0042] An anti-clogging sponge city construction rainwater garden system is designed according to the following structural parameters:

[0043] The initial rainwater surface runoff is discarded and then discharged into the municipal sewage pipe network (or the combined rainwater and sewage pipe network) for centralized treatment by the sewage treatment plant. The design volume of the initial rainfall runoff is calculated according to the runoff thickness of 7 mm in the abandoned flow well by the improved volumetric method. A liquid level float switch is installed in the well to control the water inlet and outlet valves. When the abandoned flow well is full, the water inlet valve is closed, and the rainwater continues to flow into the aquifer 1 of the rain garden system through the rainwater pipe. The initial rainwater in the abandonment well flows slowly through the drain pipe within 20 hours. When the liquid level in the abandonment well is lower than 10%, the valve of the ra...

Embodiment 3

[0051] An anti-clogging sponge city construction rainwater garden system is designed according to the following structural parameters:

[0052] The initial rainwater surface runoff is discarded and then discharged into the municipal sewage pipe network (or the combined rainwater and sewage pipe network) for centralized treatment by the sewage treatment plant. The design volume of the initial runoff of rainfall is calculated according to the runoff thickness of 8mm in the abandoned flow well by the improved volumetric method. A liquid level float switch is installed in the well to control the water inlet and outlet valves. After the abandonment well is full, the water inlet valve is closed, and the rainwater continues to flow into the aquifer 1 of the rain garden system through the rainwater pipe. The initial rainwater in the abandonment well flows slowly through the drain pipe within 24 hours. When the liquid level in the abandonment well is lower than 10%, the valve of the ra...

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Abstract

The invention relates to a rain garden system for anti-clogging sponge city construction, comprising an aquifer (1), a covering layer (2), a planting soil layer (3), a permeable geotextile (4), Artificial filler (5), sand layer (6), gravel layer (7), waterproof membrane (8) and plain soil tamping (9); described gravel layer (7) is provided with perforated drainage pipe (10) and perforated The aeration pipe (12), the perforated drainage pipe (10) and the perforated aeration pipe (12) are respectively connected to a water storage tank (16). Compared with the prior art, the invention has the advantages of anti-clogging, strong permeability, strong ability to purify rainwater, simple use and maintenance, and the like.

Description

technical field [0001] The invention relates to the technical field of rain gardens, in particular to a rain garden system for anti-clogging sponge city construction. Background technique [0002] "Sponge city" means that the city, like a sponge, has good "elasticity" in adapting to environmental changes and responding to natural disasters. It can absorb, store, infiltrate, and purify water when it rains. Water is "released" and used. Its essence is to use measures such as "seepage, stagnation, storage, purification, utilization, and drainage" to control the amount of water, peak reduction, pollution reduction, and resource utilization of urban rainfall runoff. That is, on the premise of ensuring the safety of urban drainage and waterlogging prevention, the accumulation, infiltration and purification of rainwater in the urban area can be realized to the maximum extent, and the utilization of rainwater resources and the protection of the ecological environment can be promote...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E03F1/00E03F3/02C02F1/28C02F101/16C02F101/10A01K67/033A01G22/00A01G17/00A01G25/00
CPCA01G17/005A01G25/00A01K67/0332A01G22/00C02F1/283C02F2101/105C02F2101/16E03F1/002E03F3/02
Inventor 王进车生泉谢长坤
Owner SHANGHAI JIAOTONG UNIV
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