Buffer zone protective isolation area surface runoff collection and purification system

Abstract

The invention provides a buffer zone protective isolation area surface runoff collection and purification system. The purification system is composed of a lawn system, a runoff guiding system and a runoff stagnation system. The buffer zone protective isolation area surface runoff collection and purification system is mainly applied to quick interception and purification of runoff contaminants in a buffer zone protective isolation area of a river or lake to promote ecological functions in the area and reduce the load of the river or lake which the contaminants flow into. The system is used in a newly built area for returning farmland to woodland in a target region, and materials in use are free of any ecological risks; moreover, design is simple, investment is small, and maintenance is easy.

Description

Technical field: [0001] The invention belongs to the technical field of resources and environment, and specifically relates to a system for collecting and purifying surface runoff in a buffer belt protection isolation area. Background technique: [0002] Based on the increasing eutrophication of shallow lakes in my country, it has seriously affected the production and living water in the basin and has become one of the main factors restricting the sustainable development of the social economy in the basin. Since the beginning of this century, Taihu Lake, the main victim lake in my country, In the Dianchi Lake and other watersheds, a large-scale project of returning farmland to forests has been implemented in the lakeside buffer zone of the agricultural production area, which is called the buffer zone protection and isolation area, in order to intercept and purify the runoff generated in the adjacent agricultural area and its own area purpose of pollutants. However, due to the...

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Problems solved by technology

However, due to the emphasis on the construction of trees in the traditional forest belt construction, ignoring the interception and purification effect of the system on runoff pollutants, coupled with lax management, the understory or weeds in the newly built forest belt are lush, and the stems and vines are entangled with the trees. Competing with trees for nutrients has seriously affected the healthy growth of trees. At the same time, due to the large biomass of tall weeds, the accumulation of litter has become a hidden danger of secondary pollution, or in order to ensure the healthy growth of trees to achieve rapid forest growth. For the purpose of artificially clearing the herbaceous plants in the area, the ground surface is bare, and the phenomenon of water and soil loss is serious during rainfall, which makes it difficult for the new forest belt to perform its due ecological function.

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