Modular road rainfall runoff treatment system for sponge city and treatment method

Abstract

The invention discloses a modular road rainfall runoff treatment system for a sponge city and a treatment method. The system comprises a modular curb and treatment ponds. The treatment ponds include a primary treatment pond, a secondary treatment pond and a ternary treatment pond. Rainwater flows into the primary treatment pond, a large amount of solid waste is left, and solid suspended particulate matter impurities are filtered out selectively; then rainwater enters the second treatment pond, the speed is reduced through S-shaped flow, various kinds of hygrophytes are planted to purify water, secondary filtration is conducted on solid waste, and the concentration of organic pollutants in rainfall runoff is reduced; finally rainwater enters the ternary treatment pond for accumulating infiltration, and clean redundant rainwater is slowly discharged into a greenbelt nearby. The system solves the problem that water is gathered on the road in rainy days and facilitates handling and transportation of curbs, construction flexibility is high, preliminary purification of rainwater can be achieved, peak flow and flood volume of a rainstorm can be reduced, rainwater resources can be effectively utilized, rainwater is used as a supplement of underground water, and the amount of water for greenbelt irrigation can be reduced.

Description

technical field [0001] The invention belongs to the technical field of low-impact development of sponge city construction, and in particular relates to a modular road rainwater runoff treatment system and treatment method for sponge cities. Background technique [0002] In recent years, with the rapid development of urbanization in China, the groundwater level has dropped at an alarming rate, urban waterlogging has become a hot issue of concern, and the road traffic system is a high-incidence area for waterlogging. In the past, cities pursued "one row" for rainwater. The low urban drainage standards and the lack of rainwater utilization systems are the main reasons why resources become disasters. With the proposal of the "sponge city" LID (Low Impact Development) concept, the establishment of a new urban road rainwater treatment system that integrates "seepage, stagnation, storage, purification, use, and drainage" has become an important means of treating urban waterlogging....

AI Technical Summary

Problems solved by technology

Change the existing curb design to solve the problem of damage to green space facilities caused by rapid rainwater runoff carrying sediment garbage, organic pollutants, heavy metal ions, pathogens, etc. in the rainwater treatment of sponge city roads, including floating garbage and gravel in road rainwater runoff Screening and filtration of solid impurities such as sand and sand, adsorption and purification of harmful substances in rainwater runoff, mitigation of impact force of rainwater runoff and energy dissipation, overflow treatment of heavy rainfall and recycling of devices

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