Granular anti-hardening acid-base dual-purpose ternary micro-electrolysis filler and preparation method thereof

Abstract

The invention relates to a granular anti-hardening acid-base dual-purpose ternary micro-electrolysis filler and a preparation method thereof. The grain size of the filler ranges from 1mm to 5mm, and iron powder, aluminium powder and graphite powder are mixed in a mass ratio of (2-6):(2-6):1 to perform granulation and then are sintered by being isolated from air, thus obtaining the filler. The micro-electrolysis filler is applicable to micro electronic treatment on acid sewage or base sewage. According to the invention, the efficiency of micro electrolysis on the sewage is high, a filling areais not easy to harden, and the period of back flushing is long. When the ternary micro-electrolysis filler is used for treating the sewage, CODcr (chemical oxygen demand) of the sewage can be reducedefficiently in a short time, and the biochemistry of the sewage can be improved. According to the invention, the raw materials are easy to obtain, the preparation process is simple, the problem of filler hardening of the conventional micro-electrolysis technology is solved, and the filler is applicable to treatment on the base sewage.

Description

technical field

[0001] The invention relates to a granular anti-hardening acid-base dual-purpose ternary micro-electrolytic filler and a preparation method thereof, belonging to the field of sewage treatment, especially the field of pretreatment of highly toxic and refractory organic waste water. Background technique

[0002] After the 1950s, due to the development of the modern chemical industry, a large number of artificially synthesized organic compounds were produced, such as synthetic plastics, synthetic fibers, organic pesticides, synthetic rubber, and surfactants. During the production and use of these organic substances, a large amount of organic wastewater will be generated. According to the "National Environmental Statistical Bulletin", by 2008, in my country's total wastewater discharge, industrial organic wastewater accounted for 44.3%. Its concentration is high, its composition is complex, and it often contains many refractory organic substances, such as dyes, ...

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