Unlock instant, AI-driven research and patent intelligence for your innovation.

Wastewater treatment method for fluorescent whitening agent CBW

A technology for fluorescent whitening agent and wastewater treatment, which is applied in chemical instruments and methods, preparation of organic compounds, compounds of Group 5/15 elements of the periodic table, etc. Recovery rate, easy to achieve, simple to operate effect

Inactive Publication Date: 2016-10-12
诚和环境科技(苏州)有限公司
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, fluorescent whitening agents will also produce a large amount of waste water and waste residue during the production process, which contains a large amount of organic salts, inorganic salts, organic solvents and some brightener products. If they are discharged directly, it will not only pollute the surrounding environment, but also cause pollution. cause waste of resources

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0017] Embodiments of the invention include:

[0018] A kind of wastewater treatment method of fluorescent whitening agent CBW, concrete steps are as follows:

[0019] (1) Rectification and separation: carry out rectification treatment on the wastewater of fluorescent whitening agent CBW, recover fractions, cool and precipitate the rectification liquid, and filter to obtain inorganic salt slag and rectification residue;

[0020] (2) Recovery of whitening agent: Add distilled water accounting for 65-80% of the mass of the rectification residue to the rectification residue obtained in step (1), stir to dissolve it, then evaporate the solvent at 80°C until the solution is saturated, cool and stand ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a wastewater treatment method of fluorescent whitening agent CBW, which comprises the following steps: (1) rectification and separation; (2) recovery of whitening agent; (3) recovery of organic salt; (4) product purification. The wastewater treatment method of fluorescent whitening agent CBW is simple in operation and easy to realize. It effectively separates and extracts organic salts, inorganic salts and brighteners in wastewater through a reasonable recovery and purification process. The method of rectification and solvent evaporation on the rectification residue realizes the double extraction of brightener and effectively improves the recovery rate of brightener.

Description

technical field [0001] The invention relates to the technical field of fluorescent whitening agent production, in particular to a wastewater treatment method for fluorescent whitening agent CBW. Background technique [0002] Fluorescent whitening agent can significantly improve the whiteness and gloss of the substrate, and is widely used in industries such as textiles, papermaking, plastics and synthetic detergents. However, fluorescent whitening agents will also produce a large amount of waste water and waste residue during the production process, which contains a large amount of organic salts, inorganic salts, organic solvents and some brightener products. If they are discharged directly, it will not only pollute the surrounding environment, but also cause pollution. cause waste of resources. Contents of the invention [0003] The technical problem mainly solved by the present invention is to provide a wastewater treatment method of fluorescent whitening agent CBW, whic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07C303/44C07C309/32C07F9/09C07F9/11
CPCC07C303/44C07F9/09C07F9/11
Inventor 孙云
Owner 诚和环境科技(苏州)有限公司