Tree box filter and application method thereof

Abstract

The invention relates to a tree box filter and an application method thereof. The tree box filter comprises a concrete tree box; a water-permeable concrete slab is arranged in the concrete tree box and divides the internal space of the concrete tree box into a rainwater runoff storage cavity and a rainwater storage cavity. The top of the rainwater runoff storage cavity is provided with a water inlet and an air vent hole. Mixed soil which is mixed by rough sand, fine sand, charcoal and compound organic soil is stored in the rainwater storage cavity; the compound organic soil comprises cohesive soil, straw dregs and ceramsite. A street tree is planted in the mixed soil and extends out of a planting soil layer on the top of the mixed soil. Both bottoms of the rainwater runoff storage cavity and the rainwater storage cavity are laid with rubble layers, and a drain pipe and an overflow pipe are arranged in the rubble layer at the bottom of the rainwater storage cavity. By the tree box filter, runoff of large-area impervious earth surfaces such as roads and squares is stored and filtered and ponding area of the roads or squares is reduced, thereby bringing convenience to pedestrians and making good use of rainwater.

Description

technical field [0001] The present invention relates to a tree box filter and its use method, in particular to provide a tree box filter for sponge city construction measures for roads and squares, including a set of large-area impermeable water for collecting and purifying roads and squares The low-impact development (Low Impact Development, LID) device for the generated storm runoff belongs to the field of municipal engineering. Background technique [0002] With the acceleration of urbanization in our country, the area of ​​impervious ground has increased rapidly, including a large number of impervious pavements. The impermeable ground has destroyed the original natural infiltration system of the city, resulting in a substantial increase in urban rainwater runoff; in order to prevent waterlogging, it can only be directly removed through the underground water network pipeline, resulting in a large amount of rainwater resources being wasted. At the same time, as rainwater ...

AI Technical Summary

Problems solved by technology

The impermeable ground has destroyed the original natural infiltration system of the city, resulting in a substantial increase in urban rainwater runoff; in order to prevent waterlogging, it can only be directly removed through the underground water network pipeline, resulting in a large amount of rainwater resources being wasted

At the same time, as the rainwater washes away the impermeable ground of the city, surface runoff brings a large amount of pollutants into the receiving water body, threatening the safety of the water ecological environment

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