Rainwater particle filter device

Abstract

The invention discloses a rainwater particle filter device, which comprises a well body as well as a water inlet pipe and a water outlet pipe which are arranged at the front end and the rear end of the well body. The rainwater particle filter device is characterized by further comprising a retaining wall arranged inside the well body and a scum retaining wall behind the retaining wall, wherein the retaining wall extends upwards from the bottom of the well body until upper end is flush with or lower than the lower surface of the water inlet pipe; the scum retaining wall extends downwards from the top of the well body until lower end is lower than the upper end of the retaining wall; and a water penetrating device, which is used for filtering rainwater at a low flow and is used for promoting overflow of the rainwater at a high flow, is arranged on the water outlet pipe behind the scum retaining wall. The filter device disclosed by the invention, which is used for processing floating objects and particles in the rainwater in a mode of combining gravity settling and penetrating interception of a water penetrating plate, is simple and efficient.

Description

technical field [0001] The invention relates to the technical field of rainwater pretreatment, in particular to a rainwater particle filtering device. Background technique [0002] With the rapid development of urbanization, non-point source pollution caused by rainwater runoff has gradually become an important source of urban water pollutants. Pollutants in urban stormwater runoff mainly come from wet deposition caused by precipitation leaching atmospheric pollutants and leaching of urban impervious surface pollutants, and the latter accounts for more than 90% of the total amount of pollutants in stormwater runoff. Particulate matter is the main carrier of urban impermeable surface pollutants, such as: atmospheric deposition, vehicle exhaust, tire wear, snow melting agent, sediment on construction sites, solid waste and leachate and other particulate matter contain a large number of pollutants (COD, nutrients , organic matter, heavy metals, pathogens, etc.), will eventuall...

AI Technical Summary

Problems solved by technology

[0004] Therefore, when the rainwater falls to the ground and forms runoff, it will contain a large amount of particles such as sediment and floating matter. If the particles and suspended matter in the rainwater are not intercepted and discharged directly into the natural water body, the natural water body will be polluted. Most of the rainwater is treated by filter screen, and the rainwater is pre-treated by simple filtration. However, this filter method will bring many problems: for example, the filter screen can only filter coarse particles and floating objects, and has no effect on fine particles. Smaller; the filter screen will be blocked after long-term use, hindering the discharge of rainwater and causing urban waterlogging, and the accumulated pollutants will be re-released into the urban water body, posing a serious threat to the urban water environment

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