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

A technology of n-butanol hydrochloride and n-butanol, which is applied in the field of water treatment, can solve the problems of unsatisfactory aerobic treatment effect, high operating cost, poor biochemical properties, etc., and achieve the effect of stable treatment effect, low cost and easy operation

Inactive Publication Date: 2020-06-09
国合恒新环保江苏有限公司
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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.

Method used

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

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Embodiment Construction

[0018] see figure 1 , a process for neutralizing and rectifying high hydrochloric acid n-butanol wastewater, comprising the following steps:

[0019] (1) Since the high hydrochloric acid n-butanol wastewater is quantitatively discharged in batches, four gravel neutralization tanks are set up to receive and process different batches of wastewater at different times, and each gravel neutralization tank is equipped with a pneumatic diaphragm The pump is used for waste water circulation to contact stones and supply water to the regulating pool; add high-purity calcium stone to the stone neutralization pool, and the calcium carbonate in the calcium stone will neutralize the hydrochloric acid in the wastewater during the process of wastewater passing through the calcium stone;

[0020] (2) The adjustment tank is equipped with two first-stage lift pumps (pneumatic diaphragm pumps are selected), and the high start and low stop are controlled by the float level gauge to supply water to...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C07C29/74C07C31/12C02F1/66C02F1/04C02F103/36
CPCC02F1/001C02F1/04C02F1/66C02F9/00C02F2103/36C07C29/74C07C31/12
Inventor 侯雯贵王旭洋万肖雄赵亚飞
Owner 国合恒新环保江苏有限公司
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