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Emission reduction and cyclic utilization method for agricultural tail water and rural domestic sewage

A domestic sewage and tail water technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the characteristics of poor nutrient recycling effect of agricultural tail water and seasonal variation of tail water Complementary problems are formed to achieve the effect of reducing the content of nitrogen and phosphorus nutrients, reducing the treatment load and reducing the content of nitrogen and phosphorus nutrients

Inactive Publication Date: 2017-11-24
SUZHOU WUJIANG DISTRICT SOIL FERTILIZER TECH GUIDANCE STATION
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Problems solved by technology

[0009] In order to solve the disadvantages of poor recycling of agricultural tail water nutrients in the prior art and lack of complementarity by utilizing the seasonal variation characteristics of tail water, the present invention provides a method for reducing and recycling agricultural tail water and rural domestic sewage

Method used

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  • Emission reduction and cyclic utilization method for agricultural tail water and rural domestic sewage
  • Emission reduction and cyclic utilization method for agricultural tail water and rural domestic sewage

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Embodiment

[0027] A method for reducing and recycling agricultural tail water and rural domestic sewage, comprising the following steps:

[0028] 1) Use the storage pool to collect farmland runoff within 1 hour after rainfall (usually 15-30 minutes, depending on the amount of rainfall to determine the time to collect rainwater runoff), farmland runoff within 1-2 days after fertilization, and fish and shrimp pond cleaning Temporary storage of pond water, livestock and aquaculture tail water, vegetable tail water, biogas slurry, and rural domestic sewage that has been treated by subsurface wetlands for rain and sewage diversion, adding microorganisms and aeration, and inputting at the link where crops need to be fertilized Fields or fish ponds are used to fertilize and replenish water; the bottom of the storage and allocation pool is equipped with an anti-seepage layer and a soft partition wall to prevent leakage. The area of ​​field crops, the area of ​​fruit and vegetables, and the size ...

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Abstract

The invention discloses an emission reduction and cyclic utilization method for agricultural tail water and rural domestic sewage. The emission reduction and cyclic utilization method comprises the following steps: 1) collecting eutrophic runoff tail water by utilizing a storage and blending tank and carrying out temporary storage and aeration; 2) discharging the tail water which exceeds the capacity into an ecological channel pond; 3) culturing photosynthetic bacteria by utilizing one part of the tail water and utilizing the photosynthetic bacteria to improve the water quality and a feed additive; 4) discharging domestic sewage into a subsurface flow wetland and treating the domestic sewage; 5) temporarily storing biogas slurry by utilizing the storage and blending tank. According to the emission reduction and cyclic utilization method disclosed by the invention, the agricultural tail water with high nutrients is selected and is cyclically utilized after being temporarily stored and treatment pressure of the ecological intercepting channel pond is alleviated; eutrophic agricultural wastewater is cyclically utilized to the greatest extent; in a non-agricultural tail water water-draining season, the disadvantages of a current rural domestic sewage treatment facility can be made up by utilizing a nitrogen and phosphorus intercepting facility and sufficient utilization can be realized; the emission reduction and cyclic utilization method has the advantages of investment saving, high efficiency and less manpower needed by management and protection; meanwhile, the problem that a previous sewage collection and treatment process has many intermediate links is also solved.

Description

technical field [0001] The invention belongs to the field of rural sewage treatment, in particular to a method for reducing and recycling agricultural tail water and rural domestic sewage. Background technique [0002] In recent years, with the development of industry, the sharp increase in the number of rural populations, and the high use of agricultural fertilizers, the amount of sewage generated has increased significantly. The original sewage facilities have been far from meeting the needs of sewage treatment, resulting in A large number of problems such as black and odorous water bodies and blue-green algae outbreaks have seriously affected the daily lives of the broad masses of the people, and have aroused great attention from the central government. The existing solution is usually to enter the sewage treatment plant through the sewage pipe after the industrial sewage is treated, and the domestic sewage is directly discharged into the sewage pipe through the rain and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34
CPCC02F3/32C02F3/34Y02E50/30Y02W10/10
Inventor 高建峰丁瑞芬韩国新陈雪明徐明芳黄海丁宁汪文斌化占勇
Owner SUZHOU WUJIANG DISTRICT SOIL FERTILIZER TECH GUIDANCE STATION
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