Flow making device for improving denitrification efficiency of treatment system for ecological pond with agricultural non-point source

Abstract

The invention discloses a flow making device for improving the denitrification efficiency of a treatment system for an ecological pond with an agricultural non-point source. The flow making device adopts a barrel-shaped structure; an air chamber (5) is formed i the bottom of the flow making device; a baffle is arranged at an outlet of the air chamber (5); an air inlet (4) of the air chamber is connected with an air compressor through an air conveying pipe; the top of the flow making device (1) is connected with a floating barrel (2), and the bottom of the flow making device is connected with a sinker (3); and the sinker is vertically erected in water and is fixed in position. Compared with the prior art, the flow making device has the advantage that a water body in the barrel circularly flows from the bottom up through an 'air bomb' formed by the compressed air introduced at the bottom of the flow making device so as to bring the water body with rich nitrate in the ecological pond to the position of a muddy water interface at the bottom of the flow making device. Denitrifying bacteria of apposition growth in the position of the muddy water interface can reduce the nitrate in a water phase into nitrogen by utilizing rich organic matters in bottom mud so as to remove the nitrate from the water body. Therefore, the denitrification efficiency of the treatment system for the ecological pond is improved.

Description

technical field [0001] The invention relates to an agricultural non-point source ecological pond treatment system, in particular to a flow-making device installed in the ecological pond system, which can effectively utilize denitrifying bacteria and organic carbon sources at the mud-water interface at the bottom of the ecological pond, and improve system denitrification The denitrification effect belongs to the technical field of agricultural non-point source pollution treatment. Background technique [0002] In recent years, in lake basins with dense agricultural population and well-developed planting industry, the total nitrogen produced by nitrogen fertilizer application and transported into lakes through surface runoff often accounts for the main part of nitrogen pollution in lakes, which has become a major cause of nitrogen pollution in important lakes in my country such as Taihu Lake, An important reason for the eutrophication of water bodies such as Chaohu Lake, Dianch...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to address the deficiency of the denitrification efficiency of the existing ecological pond system, to provide a water body flow-making device, which causes the vertical flow of the water body, makes the water body and the sediment interface fully contact, and improves the denitrification efficiency of the ecological pond system

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