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

Method for recycling textile dyeing and finishing wastewater

A technology for textile dyeing and finishing and waste water recycling, which is applied in the research field of water pollution control to achieve the effects of high water quality, cost reduction and stable operation.

Active Publication Date: 2013-08-14
JIANGSU SHANGDA WATER AFFAIR
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to use the anaerobic-aerobic + ozone oxidation disinfection and decolorization process to address the problems of poor biochemical properties, high chroma and high ionic strength in printing and dyeing wastewater, and to strengthen the biodegradation and decolorization process

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
  • Method for recycling textile dyeing and finishing wastewater
  • Method for recycling textile dyeing and finishing wastewater
  • Method for recycling textile dyeing and finishing wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The multistage circulating aerobic treatment system used in the embodiment of the present invention is composed of anaerobic / anoxic reaction pool A and aerobic reaction pool O in series according to the mode of A-O-A-O-A-O-A, anaerobic / anoxic reaction pool A (effective volume 10L) and The effective volume ratio of the aerobic reaction tank O (effective volume 5L) is 2:1,

[0048] Inoculate the anaerobic granular sludge in the IC reactor (effective volume 50L), and then pass the debugging wastewater into it. Under the condition of neutral pH value, in the anaerobic environment, the sludge is acclimated at 20-40℃, and the COD of the wastewater is adjusted. The concentration starts from 200mg / L and increases the concentration every day (100mg / L increase rate per day) until the raw water enters. The PCR-DGGE method is used to detect the microbial ecology in the wastewater, and to track the IC reactor effluent and biogas production. When the IC reactor The effluent COD can b...

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 method for recycling textile dyeing and finishing wastewater, which comprises the following steps of: regulating the pH of the textile dyeing and finishing wastewater in a regulating tank to be 7.0 by using acidic solution, performing coagulative precipitation in a coagulative precipitation tank by using an inorganic flocculating agent, and performing anaerobic treatmentin a high-efficiency anaerobic reactor; performing anaerobic / anoxic and aerobic circulation treatment in a multi-stage circulation aerobic treatment system, wherein the multi-stage circulation aerobic treatment system consists of anaerobic / anoxic reaction tanks A and aerobic reaction tanks O in an A-O-A-O-A-O-A staggered series connection mode; performing coagulative precipitation in a high-efficiency air floatation coagulative precipitation tank; and performing ozone oxidation and disinfection in an ozone oxidation tank to obtain recycled water. Compared with the conventional physical-chemical method, the technology has the advantages that: operating cost is obviously reduced, and over 30 percent of economic benefit is achieved. The quality of the treated water is high, and 70 percent ofrecycling rate can be achieved.

Description

(1) technical fields; [0001] The invention relates to a method for recycling and treating textile dyeing and finishing wastewater, which belongs to the field of water pollution control research. (two) background technology: [0002] Water is the basic condition for human survival and development, and the most important material basis irreplaceable in the production activities of human society. my country is a moderately water-scarce country, and water shortage causes the national industry and agriculture to lose 350 billion yuan every year, and the annual industrial output value loss is about 200 billion yuan. Insufficient supply and demand of water resources has increasingly become a "bottleneck" that affects social and economic development. An important reason for the serious shortage of water resources is the increasing trend of pollution. Among them, the discharge of industrial wastewater, especially textile printing and dyeing wastewater that does not meet the standards...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C02F103/30C02F3/30C02F9/14
Inventor 荆政郑展望丁青松
Owner JIANGSU SHANGDA WATER AFFAIR
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