Method for denitrification treatment of rural sewage

Abstract

The invention discloses a method for denitrification treatment of rural sewage. Sewage is treated sequentially through a buffer tank, a coarse screen, an inclined plate sedimentation tank, an aeration nitrification tank, a biological dephosphorization tank, a pH value regulating tank, a high voltage discharge organic rhodium catalysis polymerization reaction tank and a water purification tank and the like, ionic bonds in nitrate ions undergo bond fission and recombination under the direct action of energy effect and polymerization catalysis effect, finally cellulose nitrate particulate matter (weak nitrocotton) is generated, and thus nitrogen resources are recycled. In the rural sewage treated through the method, the nitrate nitrogen removal rate is 99.5%, and the conversion rate of the weak nitrocotton is 90% or above. Since the reaction is performed in a liquid state substrate, the reaction efficiency and speed are controlled, only the weak nitrocotton can be generated, the generation of strong nitrocotton or collodion with a higher nitrogen content is avoided, and thus the risk of explosion in running is eliminated.

Description

technical field [0001] The invention relates to a denitrification treatment method for rural sewage, which belongs to the field of waste water treatment in environmental protection. Background technique [0002] China's per capita water resources are small and the spatial distribution is uneven. At the same time, China is a large agricultural country. Most of the country's land area is in rural areas, and the agricultural population accounts for more than half of the country's population. Therefore, the amount of sewage discharged by production and life in rural areas in our country is huge. Rural sewage mainly includes wastewater from agricultural production, washing and bathing, excrement, animal breeding and landfill leachate. However, the development of my country's rural areas is relatively backward and the technical conditions are limited. Most of the sewage is directly discharged into lakes and rivers or used for land infiltration irrigation, causing extensive pollut...

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Problems solved by technology

[0008] The above-mentioned traditional treatment methods have certain shortcomings, such as high investment and operating costs, large material consumption, low nitrate nitrogen removal efficiency, etc.

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