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A source rainwater purification and storage system and installation method based on low-impact development

A low-impact development, rainwater technology, applied in waterway systems, chemical instruments and methods, water supply devices, etc., can solve the problems of lack of regulation and storage facilities, insufficient drainage capacity of rainwater pipe network, limited urban rainwater absorption capacity, etc. Heat island effect, light weight, flexible design effect

Active Publication Date: 2018-02-23
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a source rainwater purification and storage system based on low-impact development to solve the insufficient drainage capacity of the rainwater pipe network caused by the prior art; the urban rainwater absorption capacity is limited, and the regulation and storage facilities are serious lack of defects

Method used

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  • A source rainwater purification and storage system and installation method based on low-impact development
  • A source rainwater purification and storage system and installation method based on low-impact development

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specific Embodiment approach

[0029] figure 1 with figure 2 The specific implementation of the present invention is shown: a source rainwater purification and storage system based on low-impact development, including a permeable pavement 5 and a recessed green space 1, the permeable pavement 5 and the recessed green space 1 Connected, the bottom of the recessed green space 1 is provided with a biological retention layer 2. The biological retention layer 2 includes a biological layer 6, a sand layer 7 and a gravel layer 8, and is distributed from top to bottom. The bottom of the gravel layer 8 is provided with a rainwater collection pond 12. Geotextile 9 is provided at the junction between the gravel layer 8 and the rainwater collection tank 12. The rainwater collection tank 12 is composed of several rainwater collection modules 11, and the upper part of both sides of the rainwater collection tank 12 is provided with overflow pipes. 10. The rainwater collection tank 12 is provided with a water level monitor...

Embodiment 1

[0045] The water level monitoring device uses the combination of a water level probe 14 and a water level display alarm device 15. The water level probe 14 senses the change in water pressure, and then transmits the data to the water level display alarm device 15, so that people on the ground can check the rainwater in the rainwater collection pool 12 Understand the changes in the water level in the reservoir formed by the rainwater collection module 11, and when the water level is lower than a certain warning value, an alarm will be issued to remind the municipal managers to replenish water in time.

[0046] To understand the rainwater in the rainwater collection tank, it is easy to control, and the accuracy is higher, which is convenient for precise control, but it needs electricity to be used and installation is inconvenient.

Embodiment 2

[0048] The water level monitoring device adopts a columnar structure 17, which is vertically arranged inside the rainwater collection tank 12 and passes through the biological retention layer 2. The water level monitoring device contains liquid for observation. The columnar structure 17 is placed inside the rainwater collection pool 12, and the water rises from the bottom of the columnar structure 17 and extends to the upper surface of the concave green space 1. The water level in the rainwater collection pool 12 is judged by the height of the liquid column. The water level monitoring device of the columnar structure 17 is easy to install and easy to observe. It does not need power supply, but has a short service life.

[0049] The rainwater collection module is installed underground, and can be installed underground in cities, communities, factories, landscapes and other places as needed. It does not occupy the bottom space, and the rainwater collection tank 12 is composed of sev...

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Abstract

The invention discloses a source rainwater purification and storage system based on low impact development. The source rainwater purification and storage system comprises a permeable pavement road and a concave herbaceous field. The permeable pavement road and the concave herbaceous field are connected, the bottom of the concave herbaceous field is provided with a bioretention layer, the bioretention layer comprises a biological layer, a sand layer and a gravel layer that are distributed in order, the bottom of the gravel layer is provided with a rainwater collection tank, the joint between the gravel layer and the rainwater collection tank is externally provided with a geotechnical cloth, the rainwater collection tank is composed of several rainwater collection modules, the upper parts of the tank wall on two sides of the rainwater collection tank are respectively provided with an overflow pipe, the rainwater collection tank is equipped with a water level monitoring device, by adopting a module mutual splicing method, the construction becomes convenient and the construction period is short, the collected rainwater can provide water needed for growth of green plants on the ground for a long time, natural rainwater is effectively utilized to reduce the consumption of the tap water employed by people to irrigate plants. At the same time, retention rainwater is stored to reduce surface runoff, thus being conducive to construction of sponge cities and protection of the ecological environment.

Description

Technical field [0001] The invention belongs to the technical field of urban drainage and waterlogging prevention and non-point source pollution treatment, and more specifically relates to a source rainwater utilization, purification and storage system and installation method based on low-impact development. Background technique [0002] In recent years, high-speed urbanization has led to an increase in the proportion of impermeable surfaces, resulting in shorter rainwater confluence time, increased peak flow, and frequent waterlogging disasters. Rainwater runoff pollution in most cities in my country is relatively serious, and the use of rainwater can effectively alleviate water shortages and promote the sustainable development of the local economy. At present, the use of rainwater has received more and more attention from the government, and the construction of sponge cities has been initiated. [0003] Low Impact Development (LID) technology is a stormwater management and non-p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C11/22E03F1/00E03F5/10C02F9/14G01F23/18
CPCC02F1/001C02F3/327C02F3/34C02F9/00C02F2103/001E01C11/221E01C11/225E03F1/005E03F5/105G01F23/18
Inventor 康玲周杰民周丽伟
Owner HUAZHONG UNIV OF SCI & TECH