Peracetic acid wastewater treatment system

Abstract

The invention discloses a peracetic acid wastewater treatment system. The system comprises a reaction tank body, a pH value adjuster having a pH value probe and an automatic reducer adding device having an oxidation reduction potential probe, wherein the reaction tank body is divided into a catalytic deoxidization chamber, a chemical reduction chamber and a coagulation-precipitation chamber via a plurality of baffle plates, and the catalytic deoxidization chamber, the chemical reduction chamber and the coagulation-precipitation chamber are communicated in sequence; a water inlet and a water outlet are arranged on the reaction tank body; the water inlet is formed in the side wall of the upper part of the catalytic deoxidization chamber, and the water outlet is formed in the side wall of the upper part of the coagulation-precipitation chamber; a plurality of catalytic filler layers are arranged in the catalytic deoxidization chamber; a liquid outlet of the pH value adjuster is communicated with the catalytic deoxidization chamber; a liquid outlet of the automatic reducer adding device is communicated with the chemical reduction chamber; and both the pH value probe and the oxidation reduction potential probe stretch into the chemical reduction chamber. According to the peracetic acid wastewater treatment system, the strong oxidizing property in peracetic acid wastewater can be reduced, so that the microorganism killing capacity of the peracetic acid wastewater is reduced and the damage from peracetic acid in the wastewater on microorganisms in an anaerobic system or an aerobic system is avoided.

Description

technical field [0001] The invention relates to a peracetic acid wastewater treatment system, which belongs to the technical field of wastewater treatment. Background technique [0002] At present, the beverage industry is developing rapidly, but it has also brought certain environmental pollution problems. The production wastewater of the beverage industry is generally divided into bottle washing wastewater (PAA wastewater), pre-treatment and equipment cleaning water, washing workshop drainage, cleaning tank wastewater, and sugar dissolution. Waste water, end-of-life beverages and domestic sewage, etc. Beverage production wastewater has good biodegradability, but because PAA wastewater contains peracetic acid, peracetic acid has a very strong sterilizing effect, if it is not pretreated first, it will have a great impact on the subsequent anaerobic system or aerobic system Impact. Because peracetic acid in wastewater has the effect of killing microorganisms, and peracetic ...

AI Technical Summary

Problems solved by technology

Although the addition of sodium thiosulfate can quickly reduce the strong oxidation of PAA wastewater, due to the introduction of sulfur, the wastewater can produce hydrogen sulfide or mercaptan and other odorous gases in the anaerobic stage, becoming a new source of pollution

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