Rainwater inlet trash barrier sieve used for filtering initial rainwater

Abstract

The invention discloses a rainwater inlet trash barrier sieve used for filtering initial rainwater. The rainwater inlet trash barrier sieve comprises a rainwater opening with the lower portion communicated with a municipal pipeline. A rainwater grate is arranged at the upper end of the rainwater opening. At least one filtering layer is arranged below the rainwater grate. Nitrogen and phosphorus adsorbing structures are arranged between the rainwater grate and the filtering layers. Flow guide plates guiding the rainwater to the filtering layers are arranged under the rainwater grate. The trash barrier sieve has the advantages that the nitrogen and phosphorus adsorbing structures are used for effectively adsorbing nitrogen and phosphorus elements in the rainwater, river channel pollution caused by the rainwater is effectively reduced, the filtering layers are used for filtering large blockages and small sundries carried in the rainwater, the situation that the municipal pipeline is blocked by impurities is effectively avoided, and by arranging the flow guide plates, it is effectively ensured that the rainwater passes through the filtering layers first and then flows into the municipal pipeline.

Description

technical field [0001] The invention relates to rainwater treatment, in particular to a rainwater inlet trash screen used for initial rainwater filtration. Background technique [0002] The development of urbanization in my country has led to the increase of impermeable roads in cities, and the sudden urban waterlogging caused by rainstorm runoff has become an important reason for cities to "look at the sea". With the increase of high-rise buildings in the city, in midsummer, building air conditioners and vehicle exhaust will aggravate the city's "rain island effect", and rainfall runoff will carry a large amount of pollutants. However, the maintenance and management of existing urban drainage facilities are poor, and most urban drainage pipe networks are seriously silted up. So need to seek a kind of novel rainwater runoff filtering device that is applicable to existing street pavement. In addition, due to air pollution, rainwater, especially the initial rainwater, will c...

AI Technical Summary

Problems solved by technology

In addition, due to air pollution, rainwater, especially the initial rainwater, will contain ammonia nitrogen, nitrate ions, phosphate ions, etc. Municipal drainage is usually directly discharged into urban rivers, nitrogen and phosphorus elements in the river damage to the biological environment

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