Tree pool and method for filtering runoff rainwater through tree pool

Abstract

The invention provides a tree pool. The tree pool comprises a front pool (11), a filtration pool (3) and a split-flow pipe. A water inlet (8) is formed in the front pool (11), and a division plate (7) is arranged in the front pool (11). The front pool (11) is divided into a split-flow chamber (12) and a spilling chamber (20) by the division plate (7), and the split-flow chamber (12) and the spilling chamber (20) are communicated. The split-flow pipe is provided with an inlet and an outlet, the inlet of the split-flow pipe is disposed in the split-flow chamber (12), the outlet of the split-flow pipe is disposed on the outside of the tree pool, and the inlet of the split-flow pipe is higher than the bottom of the front pool (11). Besides, the invention further provides a method for filtering runoff rainwater through the tree pool. According to the tree pool and the method, sewage interception and emission reduction can be performed on road initial runoff rainwater, rainwater is used for greening irrigation and preventing plants from being damaged by snow-melting agents.

Description

technical field [0001] The invention relates to the technical field of urban rainwater control and utilization, more specifically, to a tree pool and a method for using the tree pool to filter, purify and reduce discharge of initial runoff rainwater on roads. Background technique [0002] With the development of cities and the change of climate, in recent years, severe flood disasters have occurred continuously in many cities in our country, causing huge losses and bad social impacts, even costing a lot of lives, which has attracted great attention from the government and all walks of life. In fact, while suffering from waterlogging, many places also face serious rainwater runoff pollution and even endanger water supply sources, loss of rainwater resources and severe water shortages, a sharp drop in groundwater levels, and deterioration of the ecological environment. close major issues. [0003] The phenomenon of initial erosion of urban roads is obvious, that is, the initi...

AI Technical Summary

Problems solved by technology

[0005] However, in the application process of road detention belts, it was found that due to the limitation of urban road cross-section design, urban branch roads and some secondary arterial roads often do not have green belts for detaining and purifying rainwater, only intermittently arranged street tree green belts (that is, traditional tree green belts) Pond), so the control and utilization of rainwater on these roads is limited by the site conditions; in addition, the northern cities use a large amount of snow melting agents in winter, which has a great impact on the growth of plants in the road green belts, so the northern cities The control and utilization of rainwater on the road also needs to overcome the limitation of snow melting agent

Most of the existing rainwater tree pond technologies in foreign countries are box-type structures with a bottom, so only shrubs or small trees with shallow root systems can be planted, while street trees in tree ponds on urban roads are mostly large trees, so this kind of rainwater tree ponds are applicable. limited sex

Images