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Method for recycling facility farmland irrigation water through land treatment

A technology for farmland irrigation and land treatment, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as undiscovered patent documents, and achieve the effect of improving the reuse rate

Active Publication Date: 2015-05-13
STATE GRID CORP OF CHINA +1
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  • Method for recycling facility farmland irrigation water through land treatment

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Embodiment Construction

[0020] The implementation of the present invention will be described in further detail below. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0021] A land treatment circulation method for facility farmland irrigation water, comprising steps as follows:

[0022] (1) Transform the facility farmland. The transformed farmland includes the upper layer of soil, the middle layer of quartz sand, the lower sump, and the pump placed in the sump. The pump pumps water back to the biological unit on the ground through the return pipe. Treatment, the treated water is discharged into the field through the irrigation valve, wherein the thickness of the upper layer of soil is 1 meter, and the thickness of the middle layer of quartz sand is 0.5 meters. The porous plate blocks the upper quartz sand to form a space;

[0023] (2) The infiltration water is treated by biological units to meet the "Farmland Irrigation W...

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Abstract

The invention relates to a method for recycling facility farmland irrigation water through land treatment. The method comprises the following step: transforming facility farmland, wherein the transformed farmland comprises an upper layer of soil, a middle layer of quartz sand, a water collection tank, a perforated plate and a lift pump, wherein the middle layer of quartz sand is arranged under the upper layer of soil, the water collection tank is arranged under the quartz sand, the perforated plate used for stopping the quartz sand from dropping is arranged in an upper opening in the water collection tank, the lift pump placed in the water collection tank is used for pumping water into a biological unit on the ground through a return pipe, the pumped water is treated with the biological unit, the treated water is drained into the facility farmland under the control of an irrigation valve, the drained water is filtered through the soil layer and the quartz sand layer, and the filtered water returns to the water collection tank, so that the irrigation water can be recycled through land treatment. Through the adoption of the method, the reuse rate of the agricultural irrigation water is improved, the energy is saved, the emission is reduced, and the current contradiction between water resource supply and demand in China is relieved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to a land treatment circulation method for irrigation water of facility farmland. Background technique [0002] The development of agriculture has increased the demand for irrigation water, exacerbating the current severe water scarcity. Groundwater is the main irrigation water for farmland in northern China, and the excessive exploitation of groundwater leads to a series of consequences such as ground drop. Therefore, it is very necessary to solve the contradiction of agricultural water use, so as to maintain the sustainable development of agriculture. [0003] Utilizing the interception and microbial degradation of pollutants in wastewater by soil, as well as the subsequent filtration of quartz sand, double intensified treatment of pollutants in wastewater is adopted to make the relevant indicators of wastewater meet the "Water Quality Standard for Farmland Irrigation" (G...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 郭军科于金山苏展李兴卢立秋邵林林琳赵鹏
Owner STATE GRID CORP OF CHINA
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