High-efficiency heterogeneous catalytic iron oxide carbon micro-electrolytic filler and preparation method thereof

Abstract

The invention discloses efficient heterogeneous catalytic oxidation ferric-carbon micro-electrolysis packing and a preparation method thereof. The packing is prepared from the following raw materials in parts by weight: 45-65 parts of pure iron powder, 10-25 parts of cast iron powder, 2-8 parts of graphite powder, 5-15 parts of active carbon powder, 2-10 parts of copper powder, 2-10 parts of manganese powder, 2-10 parts of aluminum powder, 2-10 parts of fine wood bits, 1-6 parts of sodium silicate, 1-6 parts of sodium borate, 2-6 parts of pyrite dust and 5-15 parts of an adhesive. The efficient heterogeneous catalytic oxidation ferric-carbon micro-electrolysis packing disclosed by the invention is prepared by taking heterogeneous metal alloy with high potential difference as a catalyst and using a high-temperature micropore roasting technology and has the characteristics of heterogeneous metal and ferric-carbon integration, micropore framework type alloy structure, large specific surface area, low density, strong activity, high current density and the like; organic wastewater is treated so that COD, ammonia nitrogen and total phosphorus can be efficiently removed, the chroma can be reduced, the biodegradability can be improved, the treatment effect is extremely stable, and the phenomena of packing passivating, hardening and the like caused in the operation process can be avoided.

Description

technical field [0001] The invention relates to the technical field of iron-carbon micro-electrolysis packing, in particular to a high-efficiency heterogeneous catalytic iron-carbon micro-electrolysis packing and a preparation method thereof. Background technique [0002] Micro-electrolysis technology, also known as internal electrolysis, iron reduction, iron-carbon method, zero-valent iron method, etc., is an ideal process for treating high-concentration organic wastewater. It does not need to be powered on. It uses the wastewater itself as the electrolyte, the iron filled in the acidic wastewater as the anode, and the carbon as the cathode. It generates a 1.2V potential difference by itself, forming tens of thousands of tiny batteries to electrolyze the wastewater to achieve the degradation of wastewater. The purpose of organic pollutants. [0003] The materials used in the existing iron-carbon bed micro-electrolytic packing are iron shavings (with a carbon content of 8-1...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of the existing iron-carbon fillers such as short running time, easy hardening of fillers, and easy blockage of iron sludge in processing equipment, and to provide a high-efficiency heterogeneous catalytic iron oxide carbon micro-electrolytic filler and a preparation method thereof. The invented filler has the characteristics of large specific surface area, light density, strong activity, and high current density. It can efficiently remove COD, ammonia nitrogen, and total phosphorus for the treatment of high-concentration organic wastewater, and can reduce chroma and improve biodegradability. The treatment effect is extremely stable.

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