A joint system of agricultural non-point source pollution reduction and recycled water agricultural irrigation

Abstract

The invention discloses an agriculture non point source pollution reduction and reclaimed water agriculture irrigation combined system comprising a district cut pollution pipe network and a village cut pollution pipe network respectively connected with a river cut pollution pipeline; the river cut pollution pipeline is connected with a sewage processing station and / or an around lake cut pollution pipeline; the sewage processing station is connected with a high pond and reservoir system; the high pond and reservoir system is connected with a high farmland; the high farmland is connected with a middle pond and reservoir system; the middle pond and reservoir system is connected with a middle farmland; the middle farmland is connected with a low pond and reservoir system; the low pond and reservoir system is connected with a low farmland; the low farmland is connected with an ecological ditch; the ecological ditch is connected with an irrigation pumping station ditch; the around lake cut pollution pipeline is connected with a sewage treatment plant; the sewage treatment plant is connected with the irrigation pumping station ditch; the irrigation pumping station ditch comprises a low area ditch, a middle area ditch and a high area ditch connected in sequence from low position to high position; the low and middle area ditches are respectively connected with the low pond and reservoir system; the high area ditch is connected with the middle pond and reservoir system.

Description

technical field [0001] The invention belongs to the field of environmental management, and in particular relates to a combined system for reducing agricultural non-point source pollution and reclaimed water for agricultural irrigation. Background technique [0002] With the rapid development of the city, in order to meet the needs of the rapid expansion of the city, for urban water use, the strategy of cleaning up the sewage without diversion and using the river as a sewage ditch is generally adopted, resulting in urban rivers generally becoming sewage ditch, and organic pollutants in the river. As the content rises, the dissolved oxygen decreases, and even in a state of hypoxia for a long time, the submerged plants cannot respire, which eventually leads to the demise of the submerged plants. As the main body of the river ecosystem, once the submerged plants disappear, the river ecosystem will collapse. With the increasing pressure on the water environment and the improvemen...

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Problems solved by technology

[0002] With the rapid development of the city, in order to meet the needs of the rapid expansion of the city, for urban water use, the strategy of cleaning up the sewage without diversion and using the river as a sewage ditch is generally adopted, resulting in urban rivers generally becoming sewage ditch, and organic pollutants in the river. As the content rises, the dissolved oxygen decreases, and even in a state of hypoxia for a long time, the submerged plants cannot respire, which eventually leads to the demise of the submerged plants. As the main body of the river ecosystem, once the submerged plants disappear, the river ecosystem will collapse

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