Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Treatment method of high-concentration peeling liquid wastewater

A treatment method and a wastewater treatment system technology, applied in the field of wastewater treatment, can solve the problems of ecological environment and human health hazards, high concentration of organic wastewater, difficult biodegradation, etc., and achieve low operating costs, efficient treatment, and simple operation.

Active Publication Date: 2019-11-26
SUZHOU SUJING ENVIRONMENTAL ENG
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, when the production capacity was small, physical and chemical methods were used for treatment, which could barely meet the lower emission standards, but the treatment efficiency was still low and the cost was high; and with the continuous improvement of production capacity, the amount of stripping liquid used also increased significantly. The corresponding increase in waste wat

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Treatment method of high-concentration peeling liquid wastewater
  • Treatment method of high-concentration peeling liquid wastewater
  • Treatment method of high-concentration peeling liquid wastewater

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1-6

[0030] The embodiments provide a method for processing stripping liquid wastewater, the stripping liquid wastewater contains dimethyl sulfoxide and ethanolamine, and the processing method includes the following steps:

[0031] (1) Adjust the pH value of the stripping liquid wastewater to 9±0.2 by adding an aqueous sulfuric acid solution;

[0032] (2) Pass the stripping liquid wastewater treated in step (1) into a moving bed biofilm reaction tank containing Mycelium and Thiobacillus for 24 hours, and aeration treatment is carried out at the same time during this process to control the system in the process The pH value is 7.5±0.2 (the pH value of the system can be maintained by adding sodium hydroxide aqueous solution), which can realize the conversion of dimethyl sulfoxide into sulfate;

[0033] (3) Pass the stripping liquid wastewater treated in step (2) into the anoxic tank for denitrification (the following reactions may occur: NO 2 - +3H→0.5N 2 +H 2 O+OH - , N...

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 treatment method of high-concentration peeling liquid wastewater. The peeling liquid wastewater comprises dimethyl sulfoxide and ethanol amine. The treatment method comprisesthe following steps: 1) adjusting the pH value of wastewater to 8.5-10.0; 2) introducing the treated wastewater into a moving bed biofilm reaction tank with hyphomicrobium and thiobacillus, performing treatment, and controlling the pH value of the system in the treatment process to 7-8; 3) introducing the treated wastewater into an anoxic pond, and performing denitrification treatment; 4) introducing treated the wastewater into an anaerobic tank, and performing ammoniation treatment so as to obtain wastewater with free ammonia NH3 and ammonium ion NH<4+>; 5) introducing treated the wastewater into an aerobiotic tank, performing a nitration reaction, controlling the pH value of the system in the treatment process to 7-8, and refluxing a part of the wastewater in the aerobiotic tank into the anoxic pond; and 6) performing mud-water separation on the treated wastewater. By adopting the treatment method, peeling liquid wastewater which is large in treatment amount and high in organic wastewater concentration can be effectively and efficiently treated.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to the treatment of stripping liquid wastewater, in particular to a treatment method for high-concentration stripping liquid wastewater. Background technique [0002] At present, the strength of domestic panel manufacturers, especially LCD panel manufacturers, has been continuously enhanced, and their production capacity has been greatly increased. In the process of producing panels, positive and / or negative photoresist strippers, etc. will be used. These strippers Generally, it is strongly alkaline, and the pH value is basically above 10. At present, the main pollutants of these stripping solutions are dimethyl sulfoxide (DMSO) and ethanolamine (MEA). The intermediate products of DMSO such as (dimethyl sulfide) DMS will Inhibitory to microorganisms, inhibition of microbial growth, MEA will lead to high COD concentration and high ammonia nitrogen concentrati...

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): C02F9/14C02F101/38
CPCC02F9/00C02F1/66C02F3/34C02F2301/08C02F2101/38C02F3/302
Inventor 丁兆浩孙华王明泽方东奇丁加文沈培新马楫
Owner SUZHOU SUJING ENVIRONMENTAL ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com