Iron-carbon coupled bio-particle carrier material for wastewater denitrification and preparation method of iron-carbon coupled bio-particle carrier material

Abstract

The invention discloses an iron-carbon coupled biological particle carrier material for wastewater denitrification and a preparation method thereof. The iron-carbon coupled biological particle carrier material for wastewater denitrification is prepared from the following raw materials: iron powder, activated carbon, gypsum powder, composite metal powder and polytetrafluoroethylene, the particle size of the iron powder is 100-300 [mu] m, the activated carbon is powdery activated carbon, the particle size of the powdery activated carbon is 200-400 [mu] m, the particle size of the composite metal powder is 50-100 [mu] m, and the composite metal powder is copper powder, manganese powder and titanium powder. The iron-carbon coupled bio-particle carrier material for wastewater denitrification can effectively realize the function of an iron-carbon coupled carrier material, iron, activated carbon and composite metal form a primary battery structure, electrolysis is realized by utilizing a plurality of electron transfer pathways formed by potential differences among different metals in the primary battery structure, and the iron-carbon coupled bio-particle carrier material has the characteristics of high electrolysis rate, high efficiency and the like. The problem that the treatment efficiency is low due to the fact that traditional zero-valent iron powder is prone to oxidation and passivation is solved.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and particularly relates to an iron-carbon coupled biological particle carrier material for wastewater denitrification and a preparation method. Background technique [0002] Sewage plants are the suppliers of nitrogen in natural water bodies. At present, most cities in my country (especially in the northwest) are facing threats such as increased water pollution, increased pollution of drinking water sources, and shortage of water resources. However, at present, the treatment process of sewage treatment plants is difficult to meet the increasingly strict sewage treatment and discharge standards. In order to achieve the total nitrogen control target of sewage discharge, many sewage treatment plants are undergoing upgrades. Among them, increasing the enhanced treatment of tail water is an important way. This poses a new challenge to the denitrification process of traditional sewage tre...

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Problems solved by technology

The present invention takes iron powder, activated carbon, gypsum powder, composite metal powder and polytetrafluoroethylene as raw materials, and the obtained iron-carbon coupling biological particle carrier material for denitrification of wastewater can effectively realize the function of iron-carbon coupling carrier material. Iron, activated carbon and composite The metal forms the primary battery structure, and utilizes various electron transfer pathways formed by the potential difference between different metals in the primary battery structure to realize electrolysis, which has a high electrolysis rate and solves the problem of low treatment efficiency caused by the easy oxidation and passivation of traditional zero-valent iron powder

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