Iron-carbon micro-electrolytic filler and preparation method thereof

Abstract

The invention discloses an iron-carbon micro-electrolytic filler and a preparation method thereof. The iron-carbon micro-electrolytic filler is prepared from, by mass, 40-75 parts of reduced iron powder, 10-40 parts of carbon powder, 10-20 parts of bentonite, 2-6 parts of a catalyst and 0.5 -5 parts of a pore-forming agent. By adding the catalyst into the iron-carbon micro-electrolytic filler, thereaction activity of the filler can be improved, the polarization phenomenon generated between electrodes along with the prolongation of the reaction time is removed, the efficiency of disposing wastewater is improved, and no hardening and passivation phenomena occur on the surface of the filler. In a roasting process for preparing the filler, since the roasting temperature is 400-700 DEG C, thebentonite cannot be decomposed, and the roasting energy consumption is reduced. In a use process of the filler, the bentonite is not hydrolyzed, has an adsorption effect, plays a certain role in removing pollutants in the wastewater and cannot generate secondary pollution. Because of the addition of the pore-forming agent, the iron-carbon micro-electrolytic filler prepared by the method has the advantages that the porosity is high, the contact area with the wastewater is large, and the disposal effect is great.

Description

technical field [0001] The invention relates to the technical field of high-salt and high-concentration wastewater treatment, in particular to an iron-carbon micro-electrolytic filler suitable for high-salt and high-concentration wastewater treatment and a preparation method thereof. Background technique [0002] With the development of society, many industrial enterprises are established rapidly, especially the rapid development of petrochemical, industrial metallurgy, electroplating, papermaking, medicine and other industries, which not only provides various conveniences for human life, but also brings a lot of Industrial wastewater that is difficult to degrade and purify naturally. These wastewaters have complex components, poor biodegradability, and high toxicity, so they cannot be treated by conventional sewage treatment methods. The country implements stricter monitoring of pollutant discharge indicators, resulting in a stricter environmental protection management sys...

AI Technical Summary

Problems solved by technology

[0004] In the existing iron-carbon micro-electrolysis technology, iron filings, activated carbon powder or coke are mostly used as raw materials for iron and carbon. Due to uneven dispersion of iron and carbon particles, iron particles are prone to rust and compaction, resulting in channeling effect and reducing The contact area between the water and the filler affects the treatment effect of the wastewater, and frequent replacement of the filler is required, resulting in a large workload