Farmland runoff pollution ecological intercepting ditch

Abstract

The invention relates to a farmland runoff pollution ecological intercepting ditch. The cross section of the ditch is trapezoid; the two walls and the bottom of the ditch are hardened by a concrete plate on which a plurality of rectangular holes are formed, and plants which have high capacity of absorbing nitrogen and phosphorus are planted in the holes; a plurality of check gates are arranged in the ditch; and the bottom of the ditch is provided with a plurality of filter boxes arranged in an S shape, holes are distributed on the four walls of each filter box all over, an adsorbing material which has high capacity of adsorbing the nitrogen and the phosphorus is filled in each filter box, and the plants which have high capacity of absorbing the nitrogen and the phosphorus are planted in the filter boxes. By the farmland runoff pollution ecological intercepting ditch, the nitrogen and the phosphorus in farmland drainage can be effectively intercepted, and the intercepting rate is over 50 percent and over 60 percent respectively; suspended matters in the farmland drainage can be effectively intercepted, and the intercepting rate is over 95 percent; the conventional farmland drainage ditch can be fully utilized, and the problem that ecological engineering occupies more cultivated land is solved; and engineering cost and maintenance cost are low, and the ditch is easy to operate and maintain and convenient to popularize and apply in a large area.

Description

Farmland runoff pollution ecological interception ditches technical field The invention belongs to the technical field of farmland drainage and prevention and control of agricultural non-point source pollution, and specifically relates to an ecological interception ditch for farmland runoff pollution that integrates farmland drainage and prevention and control of farmland non-point source pollution. Background technique Water eutrophication is a common environmental protection problem in all countries in the world, and our country is no exception. With the rapid development of our country's social economy, water eutrophication presents a general and increasingly serious development trend. The pollution sources that cause eutrophication of water bodies can be divided into point source pollution and non-point source pollution. Among them, non-point source pollution accounts for two-thirds of the total pollution, and the contribution rate of agricultural activities to non-...

AI Technical Summary

Problems solved by technology

Utilizing the farmland runoff pollution ecological interception ditches provided by the present invention can not only effectively intercept nitrogen, phosphorus and suspended solids in farmland drainage, but also can make full use of the original farmland drainage ditches, solving the problem that ecological engineering occupies more cultivated land

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