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Method for treating nitrated bamboo cellulose soda boiling wastewater

A treatment method and cellulose technology, which is applied in the direction of processing wastewater treatment, water/sewage treatment, water treatment parameter control, etc., can solve the problems of recycling nitrated bamboo cellulose alkali-boiled wastewater, environmental pollution, Waste of resources and other problems, to achieve the effect of solving the problem of sewage discharge, good treatment effect and low cost

Inactive Publication Date: 2021-02-23
江西吉润花炮新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous increase of nitrocellulose fiber production, a large amount of nitrocellulose cellulose washing and alkali boiling wastewater is continuously discharged, causing serious environmental pollution. It is necessary to study a new treatment method for the purification or recycling of nitrocellulose cellulose wastewater
[0003] There are many existing treatment methods for nitrated bamboo cellulose alkali-boiled wastewater, but they do not take into account the recycling problem of nitrated bamboo cellulose alkaline-boiled wastewater in essence. For example, adding acidic chemicals such as hydrochloric acid to nitrocellulose Alkaline boiling wastewater is neutralized and then discharged, causing environmental pollution and waste of resources, which is not the most scientific treatment method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of processing method of nitrated bamboo cellulose alkali boiling waste water, concrete steps are as follows:

[0018] Transfer 1000L of nitrobamboo cellulose alkaline cooking wastewater to container A with a capacity of 2000L, and inject nitrobamboo cellulose washing wastewater into container A while container A is stirring, and monitor the pH value in container A during the injection process Change, when the pH value reaches 7, stop injecting nitrocellulose washing wastewater into container A, and measure the amount of washing wastewater injected at this time to be 423L; heat the temperature of container A to 70°C, stir for 10 minutes, and observe again The pH value in container A is found to have no change, and the mixed liquid in container A is recorded as liquid M at this time; liquid M in container A is transferred to vacuum evaporation container B, and under stirring state, vacuum evaporation container B Vacuumize, in the state of continuous vacuuming, rais...

Embodiment 2

[0021] A kind of processing method of nitrated bamboo cellulose alkali boiling waste water, concrete steps are as follows:

[0022] Transfer 150L of nitrobamboo cellulose alkaline cooking wastewater to 300L container A, and inject nitrobamboo cellulose washing wastewater into container A under the stirring state of container A. During the injection process, monitor the pH value change in container A, When the pH value reaches 7-8, stop injecting nitrocellulose washing waste water into container A, measure and inject a total of 45L; heat container A to 50°C, stir for 15 minutes, and observe the pH in container A again Value changes, and now the pH value is close to 9, higher than 7, in the stirring state, add nitrocellulose washing waste water in the container A, and monitor the pH value change in the container A simultaneously, when the pH value reaches 7, Stop adding the nitrocellulose washing waste water in the container A, measure and add 5L altogether, the mixed liquid in ...

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Abstract

The invention relates to a method for treating nitrated bamboo cellulose soda boiling wastewater, and belongs to the technical field of environmental protection. The method comprises the steps: transferring the nitrated bamboo cellulose soda boiling wastewater into a container A, stirring, injecting nitrated bamboo cellulose washing wastewater, and stopping injection when the pH value is 7-8; heating and stirring the container A, if the pH value is higher than 7, supplementing nitrified bamboo cellulose washing wastewater, and stopping supplementing when the pH value is 7-8 so as to obtain toobtain liquid M; transferring the liquid M into a vacuum evaporation container B, stirring, vacuumizing, heating, and collecting liquid X; after 2-5 minutes, collecting liquid Y, when the residual liquid accounts for 5-10% of the initial total amount, stopping the operation so that the residual liquid is liquid Z; washing the nitrified bamboo cellulose by using the liquid X; using the liquid Y forsoda boiling of nitrified bamboo cellulose; recycling the liquid Z; and finishing the treatment of the nitrified bamboo cellulose washing wastewater. According to the treatment method provided by theinvention, cyclic utilization of washing and soda boiling of the nitrified bamboo cellulose can be realized, and the problem of sewage discharge in the preparation process of the nitrified bamboo cellulose is effectively solved.

Description

technical field [0001] The invention relates to a treatment method for nitrated bamboo cellulose alkali boiling wastewater, which belongs to the technical field of environmental protection. Background technique [0002] Bamboo nitrocellulose is another source of nitrocellulose after nitrocellulose. It is formed by nitrating cellulose with sulfuric acid and belongs to nitrate esters. Nitrocellulose with high nitrogen content is used to make single-base medicine, smokeless gunpowder, and fireworks; nitrocellulose with low nitrogen content is used to make spray paint, artificial leather, film, plastic, etc. my country is a big bamboo producing country in the world and has abundant bamboo resources, so nitrocellulose has a very broad production prospect. With the continuous increase of nitrocellulose fiber production, a large amount of nitrocellulose cellulose washing and alkali boiling wastewater is continuously discharged, causing serious environmental pollution. It is necess...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F103/28
CPCC02F1/66C02F1/048C02F2103/28C02F2209/06C02F2209/02C02F2301/063
Inventor 刘吉平刘克普吉伟生于保藏李琪军周耀明
Owner 江西吉润花炮新材料科技有限公司
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