River and lake runoff pollution cascade control system

Abstract

The invention belongs to the technical field of environmental engineering, and particularly relates to a river and lake runoff pollution cascade control system which comprises an initial rain filtering cut-off channel, a multistage plant filtering purification strip, an ecological wooden revetment and an underwater soft fence. The initial rain filtering cut-off channel is arranged on a water sideof a water's edge roadway or water's edge sidewalk, the multistage plant filtering purification strip is arranged on a water side of the initial rain filtering cut-off channel and comprises a ground-cover plant filtering strip, a wet plant filtering strip, an emergent aquatic plant filtering strip and a submerged plant filtering strip which are sequentially connected, the ecological wooden revetment is arranged between the wet plant filtering strip and the emergent aquatic plant filtering strip, and the underwater soft fence is arranged on the submerged plant filtering strip. Initial rainwaterpollution is effectively controlled and cut off in a targeted manner, water pollution caused by surface runoff is greatly reduced, and the river and lake runoff pollution cascade control system is high in integration, low in cost and simple and convenient to operate and maintain.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, in particular to a river and lake runoff pollution cascade control system, and to the technical field of source control and pollution interception in water environment comprehensive treatment. Background technique [0002] Rainfall runoff pollution is the most serious non-point source pollution. The occurrence of its pollution is random and the total discharge of pollutants fluctuates greatly. With the increasing environmental requirements, countries all over the world are increasingly controlling their pollution. The more attention is paid to it, and huge human and material resources have been invested in a lot of research. With the continuous acceleration of urbanization in my country, the expansion of urban scale and the change of land use, a large number of impermeable surfaces have appeared, which has significantly changed the hydrological process of the region. These chan...

AI Technical Summary

Problems solved by technology

However, many current technologies generally have problems such as single technical measures, high investment costs, and difficult operation and maintenance.

For example, the patent with the publication number CN 103938518 A discloses a construction method of road runoff pollution control greening system, which adopts multiple interception of pollutants, but the pollution interception green belt adopted in the first stage is filled with a large amount of fly ash with small particle size and The sand and gravel filler will have a good treatment effect in the initial stage of use, but will soon lose its filtering function due to the fouling of the filler, and will also form an anaerobic space, deteriorating the environment; the patent with the publication number CN207546007 U discloses A rainwater runoff regulation and pollutant removal system, which adopts a dynamic filtration and separation system, has a good treatment effect, but there are a large number of mechanical transmission mechanisms and electrical components, which are prone to failure in the wet environment on the water bank; the publication number is CN 207228302 U's patent discloses a rainwater runoff pollution interception facility, which adopts a non-powered structure and utilizes hydrocyclone to remove pollutants. However, the amount of rainwater is generally uneven, so the facility can only have a good effect in a small rainfall range. Pollution control effect, and there are problems of single technical measures, requiring a large number of reinforced concrete projects, high investment, and inconsistency with the environment

Images