Process for neutralizing and rectifying high-hydrochloric-acid n-butyl alcohol wastewater

Abstract

The invention relates to a process for neutralizing and rectifying high-hydrochloric-acid n-butyl alcohol wastewater. The method comprises the following steps: (1) adding high-purity calcium stone into a stone neutralizing tank, wherein the hydrochloric acid in wastewater can be neutralized by calcium carbonate in the calcium stone; (2) arranging a first-stage lift pump in a regulating tank, and controlling high start and low stop by a floating ball liquid level meter to supply water to the neutralizing tank; (3) adding a small amount of calcium carbonate powder into the neutralizing tank to neutralize the wastewater to be neutral, then conveying the wastewater to a security filter through a second-stage lifting pump, and filtering; (4) enabling the wastewater filtered by the security filter to enter a raw material storage tank under the pressure of a pump; (5) arranging a third-stage lift pump in the raw material storage tank, arranging a flow meter and a pneumatic valve, and controlling the flow of the wastewater entering a rectifying tower through the pneumatic valve so as to achieve the separation of n-butyl alcohol from water; and (6) arranging a finished product tank beside the rectifying tower, wherein the finished product tank is used for receiving the separated n-butyl alcohol. The method can be used for efficiently and stably treating the high-hydrochloric-acid n-butyl alcohol wastewater.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a process for neutralizing and rectifying high hydrochloric acid n-butanol wastewater. Background technique [0002] High hydrochloric acid n-butanol wastewater is produced during the production of organic silica gel. The wastewater is strongly acidic and contains a large amount of n-butanol. At present, most of the wastewater is treated by acid-base neutralization, Fenton and aerobic treatment. However, the operating cost of the Fenton method is high, and the wastewater after acid-base neutralization and Fenton treatment has extremely high salinity and poor biochemical properties, and the effect of aerobic treatment is not ideal. With the increasing national discharge standards, the waste water also needs to choose a process with stable treatment effect and qualified effluent quality. Contents of the invention [0003] The purpose of the present invention is to provide a kind o...

AI Technical Summary

Problems solved by technology

However, the operating cost of the Fenton method is high, and the wastewater after acid-base neutralization and Fenton treatment has extremely high salinity and poor biochemical properties, and the effect of aerobic treatment is not ideal.

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