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

Method for recycling and reusing active turquoise blue dye production wastewater

A technology of dye wastewater and reactive turquoise blue, applied in chemical instruments and methods, textile industry wastewater treatment, water/sewage multi-stage treatment, etc., can solve the problems of non-recycled wastewater, zero discharge of process water, etc., and achieve complete reuse , The effect of saving programs

Inactive Publication Date: 2014-12-10
NAIMAN MINGZHOU CHEM TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have achieved certain effects on the treatment of dye wastewater, but the wastewater has not been recycled.
Wastewater recycling is particularly important in areas where water is scarce. So far, there is no report on the recycling of reactive turquoise dye production wastewater to achieve zero discharge of process water.

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 1

[0019] Take the production wastewater of Naiman Mingzhou Chemical Technology Co., Ltd. Active Turquoise Blue 21 for chromaticity detection, the chromaticity is 200 times, and put it into the decolorization pool for dehydration and filtration. The decolorization pool includes a 200-mesh filter screen, on which there is a molecular sieve whose main component is silicon dioxide. The decolorized wastewater is collected into the wastewater collection tank. After the collection, the wastewater in the wastewater collection tank is added to a 10-ton neutralization reactor, and then slowly add soda ash, stirring evenly while adding, and real-time detection of the neutralization reactor. When the pH value is 7.2, stop adding soda ash, continue stirring for a period of time, and then check the pH value in the neutralization reactor to show 7.0. Then, transfer the material in the neutralization reactor to the crystallization tank for cooling and crystallization at 0° C., and centrifuge af...

Embodiment 2

[0021] Get the production wastewater of Naiman Mingzhou Chemical Technology Co., Ltd. reactive turquoise blue dye 14 for chromaticity detection, and the chromaticity is 40 times, and it is collected into the waste water collection tank. After the collection, the waste water in the waste water collection tank is added to 10 Tons of neutralization reaction kettle, then slowly add soda ash, stir evenly while adding, and detect the pH value in the neutralization reaction kettle in real time at the same time, when the pH value is 8.5, stop adding soda ash, continue to stir for a period of time, and then detect The pH in the neutralization kettle showed 8.2. Then, transfer the material in the neutralization reactor to the crystallization tank for cooling and crystallization at -5°C, and centrifuge after crystallization to obtain supernatant and precipitate. The supernatant looks the same as tap water to the naked eye, the chromaticity is 40 times as tested, and the COD value is 90mg...

Embodiment 3

[0023] The production wastewater of Active Turquoise Blue 72 of Naiman Mingzhou Chemical Technology Co., Ltd. was taken for chromaticity detection, and the chromaticity was 150 times, and it was put into the decolorization tank for dehydration and filtration. The decolorization tank includes a 300-mesh filter screen, and there is a molecular sieve whose main component is silicon dioxide on the filter screen. The decolorized wastewater is collected into the wastewater collection tank. After the collection, the wastewater in the wastewater collection tank is added to a 10-ton neutralization reaction kettle, and then the mixture of soda ash and baking soda is slowly added, stirred evenly while adding, and real-time detection Neutralize the pH value in the reactor. When the pH value is 7.0, stop adding soda ash and baking soda. After continuing to stir for a period of time, check the pH value in the neutralization reactor and it is 7.1. Then, transfer the material in the neutraliz...

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

PropertyMeasurementUnit
chemical oxygen demand (mass)aaaaaaaaaa
Login to View More

Abstract

The invention provides a method for recycling and reusing active turquoise blue dye production wastewater. The method comprises the following steps of (1) respectively treating dye wastewater according to different chromas, enabling dye wastewater with the chroma of less than or equal to 50 times to directly enter a wastewater collecting tank, carrying out physical decolorization treatment on dye wastewater with the chroma of larger than 50 times in a decolorization tank, and enabling the treated dye wastewater to enter the wastewater collecting tank; (2) adding wastewater in the wastewater collecting tank into a neutral reaction kettle, then, slowly adding regulating alkali while uniformly stirring, and stopping adding the regulating alkali when the pH value is 7.0-8.5; (3) transferring substances in the neutral reaction kettle to a crystallization kettle to cool and crystallize; and (4) centrifugally separating the substances in the crystallization kettle, transferring a supernatant liquid to a clear water collecting tank, and transferring sediments into a solid collecting tank. The wastewater treated by using the method can be completely reused for active turquoise blue dye production, so that the aims of clean production and green production in the dye production process are achieved.

Description

technical field [0001] The invention relates to a method for recycling reactive turquoise dye production wastewater. Background technique [0002] In the process of dye synthesis and production, a large amount of mother liquor wastewater and washing wastewater will be produced. Because of its high COD value and chroma, if it is discharged directly without treatment, it will cause damage to the ecological environment of the water body and seriously pollute the environment. At present, many literatures have reported the treatment technologies of dye production wastewater, such as adsorption dehydration method, catalytic oxidation method, biochemical method, iron-carbon micro-electrolysis method, etc. These methods have achieved certain effects on the treatment of dye wastewater, but the wastewater has not been recycled. Wastewater recycling is particularly important in areas where water is scarce, and there is no report on the recycling of reactive turquoise dye production wa...

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 Applications(China)
IPC IPC(8): C02F9/08C02F103/30
Inventor 赵立红沈也红李永明
Owner NAIMAN MINGZHOU CHEM TECH
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