Nitrogen-phosphorus non-point source pollution control and recycling system and method for farmland

Abstract

The invention discloses a nitrogen-phosphorus non-point source pollution control and recycling system and method for a farmland, and relates to the field of agricultural environmental protection. The system comprises: a main ridge arranged around the farmland, branch ridges arranged inside the farmland vertically and horizontally, and an aquatic plant cultivation trench arranged around the main ridge, wherein green plants are cultivated on the main ridge and the branch ridges respectively, and aquatic plants are cultivated in the aquatic plant cultivation trench; multiple pipelines are buried in earth between a water collection facility and the aquatic plant cultivation trench; a filtration adsorption facility is a filtration adsorption tank, and comprises a first buffer area, a filter screen, a nitrogen-phosphorus adsorption material and a second buffer area; a water suction pump is arranged in the first buffer area, and a water pump is arranged in the second buffer area; a water storage facility is a reservoir, and a drain valve is arranged on the water storage facility. According to the nitrogen-phosphorus non-point source pollution control and recycling system and method for the farmland, agricultural non-point source pollution can be better controlled, and nitrogen-phosphorus elements can be effectively recycled.

Description

technical field [0001] The invention relates to the field of agricultural environmental protection, and in particular to a system and method for controlling and recycling nitrogen and phosphorus non-point source pollution in farmland. Background technique [0002] With the effective control of point source pollution such as industrial wastewater and urban domestic sewage, agricultural non-point source pollution has become an important source of water environment pollution. Among them, nitrogen (N) and phosphorus (P) pollution is a typical type of agricultural non-point source pollution, which is the main substance causing eutrophication of water bodies. Therefore, solving the non-point source pollution of N and P in farmland has important practical significance for the control of eutrophication in water bodies. [0003] At present, technologies for controlling agricultural non-point source pollution mainly include reducing chemical fertilizer input, artificial wetlands, eco...

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Problems solved by technology

[0005] The embodiment of the present invention provides a system and method for the control and recycling of farmland nitrogen and phosphorus non-point source pollution, which is used to solve the problems in the prior art that the better control of agricultural non-point source pollution and the effective utilization of resources cannot be achieved

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