Antiscour ecological trench for interception of phosphorus loss

Abstract

An antiscour ecological trench for the interception of phosphorus loss is characterized in that a natural trench is excavated or improved to form a main canal according to the natural landforms, and gully cliffs of the main canal is formed by the arrangement of hollow de-alkali cement prefabricated sections with holes at the bottom; the bottom of the trench is layered with broken stones and cultivation soil covers the surface layer of the broken stones; a phosphorus fixation matrix and the cultivated soil are uniformly mixed to coat into the prefabricated sections of the gully cliffs, and seeds of attached plants are sowed at the bottom of the trench and in the gully cliffs; and cement interception dams are arranged at intervals on the main canal. According to the ecological trench provided by the invention, by designing the form and structure of the trench, the capability of the trench to resisting waterpower scour can be effectively improved, and multiple constitutional units all have functions of absorbing and intercepting phosphorus; phosphorus in a pollutant-holding water body is rapidly and effectively intercepted by multiple technical means of plant absorption, sediment interception and phosphorus fixation matrix, which are effective methods for solving high concentration of phosphorus in superfluous phosphorus background areas, controlling the output of phosphorus under strong water-power condition and treating non-point source pollution.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, and relates to an ecological ditch, in particular to an anti-scour type ecological ditch for intercepting and fixing high phosphorus flux output in a catchment area under a phosphorus-rich geological background. Background technique [0002] Phosphorus has been recognized as the main limiting factor of lake eutrophication, so how to reduce and eliminate the input of phosphorus to lakes and other water catchment areas has always been a scientific issue that scientists around the world are concerned about. At present, for point source pollution, such as the control of phosphorus in industrial or domestic wastewater, methods such as chemical precipitation or biological treatment are mainly used, and these technologies have been developed for decades, and the methods are very mature. However, the problem of phosphorus output control from agricultural non-point sources and phos...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an anti-scouring ecological ditch for intercepting phosphorus loss, which can overcome the shortcomings of low sodium phosphorus concentration and no significant hydraulic erosion resistance of traditional agricultural ecological ditches, and is a kind of anti-scouring type with strong water flow resistance. A new type of ecological ditch with scouring capacity and high phosphorus absorption capacity, especially suitable for phosphorus-rich geological background areas with a certain water drop. The ecological ditch of the present invention can effectively control the high phosphorus output flux of the phosphorus-rich background area and control non-point source pollution

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