Rainwater filtering device

Abstract

The invention belongs to the field of water treatment, and specifically relates to a rainwater filtering device. The rainwater filtering device is characterized by comprising a filtering frame, filtering nets, a filtering material and a flow guiding device, wherein the filtering frame comprises a top, a side part and a bottom; the filtering nets are arranged at the bottom and the side surface of the filtering frame; the filtering material is arranged at the bottom of the filtering frame; the flow guiding device is mounted in the filtering frame. With the adoption of the rainwater filtering device, rainwater can be subjected to multi-grade treatment from the source, and pollutants such as granules, floating objects, nitrogen, phosphorus, oil and grease in rainwater can be separated; the intercepting effect is good; the pollution caused by that pollutants in rainwater is directly discharged to pollute natural water can be avoided.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a rainwater filtering device. Background technique [0002] With the acceleration of urbanization, the impermeable area on the ground has increased significantly, and pollutants have gradually accumulated on these impermeable ground. When it rains, the rainwater washes the ground and the pollutants are washed into the rainwater runoff system to form rainwater runoff pollution. Rainwater runoff pollution is a kind of diffuse pollution. Pollutants enter natural water bodies and cause water pollution. The pollutants include particulate matter, organic matter, heavy metals and other toxic and harmful substances. Therefore, the process of urbanization and industrialization has led to increasingly serious water crisis and rain and flood hazards. [0003] With the aggravation of water source crisis and rain and flood damage, it has become an important emerging topic to collec...

AI Technical Summary

Problems solved by technology

[0004] At present, the collection and treatment of initial rainwater in my country is still in its infancy. Rainwater will fall to the ground to form runoff, which will contain a large amount of particles and floating objects. Pollution to natural water bodies. At present, most of the rainwater is treated with a filter screen. However, this method is single and can only remove floating objects, and cannot perform multi-stage treatment of rainwater.

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