Series rainwater ecological filtration and cleaning collection device

Abstract

The invention relates to a wastewater, sewage and rainwater purifying and treatment system, in particular to a serial type rainwater ecological filtering and clean collecting device, which is applied to the field of organic wastewater and rainwater treatment of urban domestic sewage, food industry and agriculture. The serial type rainwater ecological filtering and clean collecting device comprises a purifying pool, wherein the purifying pool is provided with an upper opening; a first separating plate and a second separating plate are transversely arranged in the purifying pool from top to bottom, and are used for separating the purifying pool into an ecological filtering pool, a physical filtering pool and a rainwater collecting pool from top to bottom; a plurality of first water holes are formed in the first separating plate and are used for communicating the ecological filtering pool and the physical filtering pool; a plurality of second water holes are formed in the second separating plate and are used for communicating the physical filtering pool and the rainwater collecting pool; a soil layer and a first water filtering layer are filled into the ecological filtering pool, the first water filtering layer is positioned between the soil layer and the first separating plate, and a plurality of earthworms are put in the soil layer; a physical filtering layer is arranged in the physical filtering pool.

Description

technical field [0001] The invention relates to a waste water, sewage and rainwater purification treatment system, in particular to a serial rainwater ecological filtering and cleaning collection device used in the fields of urban domestic sewage, organic waste water in food industry and agriculture and rainwater treatment. Background technique [0002] At present, urban surface rainfall runoff carries a large amount of surface pollutants into the rainwater collection system. Due to the discontinuous and explosive nature of urban rainwater runoff pollutant transportation, its pollution load will double in a short period of time, which will affect the urban water collection system. cause a shock effect. [0003] The water quality of natural rainfall is generally good, and the main pollutant is suspended solids (SS), which can be basically purified by physical methods (sedimentation and filtration). (such as roofs, sidewalks, roadways, etc.) will be polluted by pollutants on ...

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Problems solved by technology

However, the initial flow abandonment has great randomness and uncontrollability: on the one hand, if there are many pollutants on the surface under the rainfall, and 2-5mm precipitation cannot wash it away, the rainwater collected later will still contain more pollutants. This will not only increase the working intensity of the filter of the rainwater collection device and cause the filter to be clogged, but also the impurities will deposit on the bottom of the pool after a long time, which will directly bring great trouble to the later cleaning work, and even cause the entire rainwater The collection device is paralyzed; on the other hand, rainfall occurs in relatively clean places such as green spaces or pedestrian walkways in the city, and the initial rainfall water quality pollutant content is small, and the initial waste flow will waste 2-5mm of the initial rainfall, wasting water resources

[0005] Existing rainwater collection devices also mostly use physical filtration devices, that is, porous filter materials with large specific surface area and high activity are used to absorb and fix the pollutants contained in rainwater. Porous filter materials such as zeolite, ceramsite, coral Sand, etc., the above-mentioned filter materials do have a strong ability to filter rainwater within a certain period of time, but as the pores of the filter material are gradually blocked by pollutants or the upper surface of the filter material is blocked by garbage, fallen leaves and other substances, its filtration efficiency also continues. Reduced, resulting in the quality of collected rainwater cannot be guaranteed

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