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Technique for recycling ketazine-process hydrazine hydrate high-salt wastewater

A technology of high-salt wastewater and ketazine method, which is applied in the field of resource treatment, can solve the problems of failure to meet the reuse requirements and high Cl- content, and achieve resource utilization, high removal rate, and resource reuse. Effect

Active Publication Date: 2015-06-24
SUZHOU JUZHI TONGCHUANG ENVIRONMENTAL PROTECTION TECH
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  • Abstract
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Problems solved by technology

However, due to the high content of Cl-, it cannot be treated by conventional biochemical methods, and the treatment effects of direct oxidation, adsorption, aeration and other methods cannot meet the requirements of recycling

Method used

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  • Technique for recycling ketazine-process hydrazine hydrate high-salt wastewater

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Embodiment Construction

[0019] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0020] The technical scheme of concrete implementation of the present invention is:

[0021] The water quality of the hydrazine hydrate wastewater to be treated is as follows:

[0022] chemical composition

Mass fraction (% or mg / L)

Sodium chloride

8％-10％

total ammonium

0.07％

Acetone

769mg / L

Hydrazine

424mg / L

NH 3

<200mg / L

[0023] Such as figure 1 As shown, the process for resourceful treatment of high-salt waste water produced by ketazine method to hydrazine hydrate comprises the following steps:

[0024] 1) The hydrazine hydrate wastewater is discharged into the regulating t...

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Abstract

The invention discloses a technique for recycling ketazine-process hydrazine hydrate high-salt wastewater, which changes the solution idea that the ketazine-process hydrazine hydrate wastewater often adopts abundant oxidizers for oxidation treatment and then is discharged. The treatment technique based on air stripping oxidation and microwave catalytic oxidation is utilized to effectively perform oxidative decomposition and remove ammonia nitrogen and organic matters which can cause harm in wastewater in the diaphragm-process chlorine alkali production process, so that the treated wastewater can be recycled as a NaCl solution to be the diaphragm-process chlorine alkali production raw material, thereby implementing recycling of wastewater, lowering the diaphragm-process chlorine alkali production cost and achieving the treatment goal of zero wastewater discharge in deed.

Description

technical field [0001] The invention relates to a process for resourceful treatment of high-salt wastewater produced by a ketazine method to produce hydrazine hydrate. Background technique [0002] Hydrazine hydrate (also known as hydrazine hydrate) is an important chemical raw material, mainly used for boiler water deoxidation, high-purity metal production, organic compound synthesis and reduction, rare element separation, and also used in the manufacture of rocket fuel and explosives. With the advancement of technology and the development of society, the application fields of hydrazine hydrate are constantly expanding in recent years. [0003] The production methods of hydrazine hydrate mainly include Raschig method, urea method, ketazine method, hydrogen peroxide method and air oxidation method. Due to serious environmental pollution, large investment in equipment, and low product yield, Rasig method has basically been eliminated in foreign countries. At present, domest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08C02F103/36
Inventor 宋兴福金艳孙玉柱
Owner SUZHOU JUZHI TONGCHUANG ENVIRONMENTAL PROTECTION TECH
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