Bioretention facility

Abstract

The invention discloses a bioretention facility. The bioretention facility comprises a shell, a surface stagnant layer, a filler layer and a drainage layer, the shell comprises four side walls, the upper portion of the shell is open, the bottom of the shell is a plain soil base layer, and the drainage layer, the filler layer and the surface stagnant water layer are sequentially laid in the shell from bottom to top. The filler layer comprises a plurality of filler module units which are arranged in a stacked mode and are independent and detachable, and the filler module units are arranged in anarray mode in the first direction and the second direction which are perpendicular to each other. According to the facility, when the local pollution of the filler layer is severe and the filler layer needs to be replaced, part of filler module units of the filler layer can be disassembled and replaced, and then the operation and maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of municipal engineering, in particular to a biological retention facility. Background technique [0002] As an ecological water treatment facility, bioretention facilities are widely used for the regulation, storage and purification of rainwater runoff. However, at present, various types of bioretention facilities have more internal fillers or are arranged in an overall gradation along the horizontal / vertical direction. This kind of filling setting method makes the layout and function of the structural layer in the bioretention facility relatively fixed, and it is difficult to make flexible and targeted configuration according to the change of runoff pollution source. When functional or structural damage such as plugging occurs to the packing, it can only be repaired by replacing the packing inside the facility as a whole, which also greatly increases the maintenance cost of the bioretention facility durin...

AI Technical Summary

Problems solved by technology

However, at present, various types of bioretention facilities have more internal fillers or are arranged in an overall gradation along the horizontal / vertical direction

This kind of filling arrangement makes the layout and function of the structural layer in the bioretention facility relatively fixed, and it is difficult to make flexible and targeted configuration according to the change of runoff pollution source

When functional or structural damage such as plugging occurs to the packing, it can only be repaired by replacing the packing inside the facility as a whole, which also greatly increases the maintenance cost of the bioretention facility during operation

These defects restrict the efficiency and cost performance of bioretention facilities during operation

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