Treatment solution for hydrazine waste liquid

A technology for waste liquid treatment and liquid treatment, which is applied in water/sewage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of high equipment maintenance cost, slow reaction speed, and large amount of ozone usage, etc. problems, to achieve the effect of low toxicity to the human body, little pollution, and reasonable formula

Active Publication Date: 2011-07-27
北京航天凯恩新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a better treatment effect, but the amount of ozone used is large, requiring huge ozone generating equipment
Large capital investment and high equipment maintenance costs
[0014] Hypochlorite treatment method, this method is not effective in treating high-concentration hydrazine sewage, and is prone to produce secondary pollutants such as nitrosodimethylamine and formaldehyde, and the reaction speed is slow

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A treatment solution for hydrazine waste liquid. The main components of the treatment solution are: 4% hydrogen peroxide, 0.04% potassium sorbate, 4% acetic acid, 2.5% phosphoric acid, 0.04% sodium selenate, and the balance is water.

[0039] The hydrazine waste liquid treatment liquid is prepared according to the following method: add about half the volume of water to be prepared in the container, start the stirring device, and the rotation speed is 90rpm, and then add hydrogen peroxide, potassium sorbate, acetic acid, phosphoric acid, Sodium selenate, the addition rate of each material is 2.5kg / min, after all the solid materials are added, add water to the volume to be prepared; continue to stir for 30min and stop; after standing for 1h, filter the residue and insoluble matter, and the clear liquid obtained is treatment fluid.

Embodiment 2

[0041] A hydrazine waste liquid treatment liquid, the main components of which are: 4% hydrogen peroxide, 0.04% potassium sorbate, 4% acetic acid, 2% phosphoric acid, 0.03% sodium selenate, and the balance is water.

[0042] The hydrazine waste liquid treatment liquid is prepared according to the following method: add about half the volume of water to be prepared in the container, start the stirring device, and the rotation speed is 85rpm, and then add hydrogen peroxide, potassium sorbate, acetic acid, phosphoric acid, Sodium selenate, the addition rate of each material is 3.0kg / min, after all the solid materials are added, add water to the volume to be prepared; continue stirring for 30min and stop; after standing for 1h, filter the residue and insoluble matter, and the resulting clear liquid is treatment fluid.

Embodiment 3

[0044] A hydrazine waste liquid treatment liquid, the main components of which are: 4% hydrogen peroxide, 0.04% potassium sorbate, 4% acetic acid, 3% phosphoric acid, 0.05% sodium selenate, and the balance is water.

[0045] The hydrazine waste liquid treatment liquid is prepared according to the following method: add about half the volume of water to be prepared in the container, start the stirring device, and the rotation speed is 80rpm, and then add hydrogen peroxide, potassium sorbate, acetic acid, phosphoric acid, Sodium selenate, the addition rate of each material is 2.5kg / min, after all the solid materials are added, add water to the volume to be prepared; continue to stir for 30min and stop; after standing for 1h, filter the residue and insoluble matter, and the clear liquid obtained is treatment fluid.

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PUM

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Abstract

The invention relates to a treatment solution for hydrazine waste liquid, and the treatment solution comprises the following main components: 0.1-20% of hydrogen peroxide, 0.01-1.0% of potassium sorbate, 0.1-20% of acetic acid, 0.1-10% of phosphoric acid, 0.01-1% of sodium selenate, and the balance of water. The treatment solution is prepared by the following steps: adding water with a volume being about half of the liquid volume of the treatment solution to be prepared into a container, starting a stirring device, adding hydrogen peroxide, potassium sorbate, acetic acid, phosphoric acid, and sodium selenate sequentially, and adding water to achieve a volume to be prepared after all the solid materials are added; continuing to stir for 30 min and stopping; allowing the solution to stand for 1 h, filtering to remove residues and insoluble substances so as to obtain a clear solution which is the treatment solution.

Description

technical field [0001] The invention relates to the field of waste liquid absorption treatment, in particular to a hydrazine waste liquid treatment liquid. Background technique [0002] Hydrazine is a high-energy liquid fuel with excellent performance, which is highly toxic, flammable and explosive. If the concentration of hydrazine substances in the air is too high, it will cause air pollution, endanger the surrounding crops, and cause the death of bee colonies. [0003] In addition, in some places exposed to hydrazine waste gas or waste liquid, these hydrazine substances are often contaminated and accumulated on the equipment. The long-term accumulation of these toxic substances will also seriously affect the health of the personnel in the site and pollute the environment around the site. This requires an effective method to regularly clean these equipment and venues to ensure the health of personnel. [0004] At present, the commonly used hydrazine waste gas and waste ...

Claims

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Application Information

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IPC IPC(8): C02F1/00C02F1/72
Inventor 刘江强贺芳孙海云卫豪李俊王亚军
Owner 北京航天凯恩新材料有限公司
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