High-concentration phenol-containing sewage up-to-standard discharge treatment system

Abstract

The invention discloses a high-concentration phenol-containing sewage up-to-standard discharge treatment system. The system comprises a catalytic oxidation pond, an oxidation stabilization pond, a post biochemical BAF pond, a clean water tank, a dilution integrated tank, a pretreatment primary BAF pond, a pretreatment secondary BAF pond and a water outlet tank; an ozone generator is connected intothe catalytic oxidation pond through a gas pipeline, the clean water tank is provided with a water inlet hole and a water outlet hole, the water inlet hole of the clean water pond is connected with the post biochemical BAF pond through a rear section transmission pipeline, the clean water tank is connected to one end of a backwashing pump, and the other end of the backwashing pump is connected into the catalytic oxidation pond and the post biochemical BAF pond through a rear section backflow pipeline; a carrier is prepared from, by weight, 60-70 parts of high density polyethylene, 10-15 partsof polypropylene resin, 6-8 parts of low density polyethylene, 8-10 parts of bamboo charcoal powder, 4-6 parts of wood powder, 2-3 parts of lignin, 2-3 parts of dichloromethane, 1-2 parts of 1,1-diethylguanidine sulfate and 0.5-1 part of N,N'-ethylene bis stearamide. Accordingly, the biodegradability of effluent is improved, and the purpose of efficiently degrading organic pollutant is achieved.

Description

technical field [0001] The invention relates to a standard-reaching discharge treatment system for high-concentration phenol-containing sewage, which belongs to the technical field of wastewater treatment. Background technique [0002] At present, the treatment methods for phenolic wastewater mainly include extraction method, adsorption method, chemical oxidation method, biochemical treatment method and so on. The extraction method consumes a lot of energy, and it is easy for the extractant to remain in the subsequent wastewater, which affects the subsequent treatment process; the adsorption method is simple to operate and is suitable for wastewater with low phenol content, but the one-time investment in equipment is large, and the regeneration of the adsorbent is difficult ; Although the chemical method can oxidize and remove phenol, the operating cost of direct oxidation is relatively high. Contents of the invention [0003] The purpose of the present invention is to pr...

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Problems solved by technology

The extraction method consumes a lot of energy, and it is easy for the extractant to remain in the subsequent wastewater, which affects the subsequent treatment process; the adsorption method is simple to operate and is suitable for wastewater with low phenol content, but the one-time investment in equipment is large, and the regeneration of the adsorbent is difficult ; Although the chemical method can oxidize and remove phenol, the operating cost of direct oxidation is relatively high

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