Method for removing epichlorohydrin in saponification wastewater through oxidation

Abstract

The invention provides a method for removing epichlorohydrin in saponification wastewater through oxidation. The method comprises the following steps: S1, filtering a water sample, removing calcium hydroxide and magnesium hydroxide, adding hydrochloric acid to adjust the pH value to 7, filtering, and taking out suspended matters; S2, adjusting the temperature of the water sample in S1 to 40-80 DEGC and the pH value to 2.0-4.0, and adding an oxidant into the pretreated water sample; and S3, putting the water sample obtained in the step S2 into a conical flask, adding a defoaming agent, oscillating in a constant-temperature water bath oscillator for 45-60 minutes, cooling, standing for 60 minutes, and filtering and concentrating, wherein the filtering treatment is any one of an activated carbon adsorption method, a micro-electrolysis method, a Fenton reagent treatment method and a hydrogen peroxide treatment method, and the defoaming agent in S3 is one or two of hydrogen peroxide or potassium dichromate. The method disclosed by the invention is simple and convenient to operate, large equipment required during treatment is reduced, the treatment cost is reduced, and the treatment temperature and the treatment pH value are determined by a single-factor experiment, so that the excellence during treatment is greatly improved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment methods, in particular to a method for oxidizing and removing epichlorohydrin in saponification wastewater. Background technique [0002] Epichlorohydrin is also known as 3-chloro-1,2-epoxypropane, commonly known as epichlorohydrin, abbreviated as EPI or ECH, and its chemical formula is C3H5CIO. It is a colorless liquid, an organic compound with an odor similar to chloroform, and a boiling point of 116.11 ℃, is an important organic synthesis raw material and intermediate. It can be used in the production of epoxy resin and as a diluent for epoxy resin. It is also used in the manufacture of glycerin, nitroglycerin explosives, glass fiber reinforced plastics, glyceryl methacrylate, chlorohydrin rubber, glycidol derivatives, surfactants, electrical insulation products, etc. It is also a common raw material for the manufacture of various adhesives, medicines, pesticides, plasticizers and io...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art. The present invention proposes a method for oxidizing and removing epichlorohydrin in saponification wastewater, so as to solve the three treatment methods currently on the market proposed in the above-mentioned background technology There are insufficient problems