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

Decoloring method for paper-making middle section water

A technology for mid-section water and water bodies, applied in chemical instruments and methods, multi-stage water/sewage treatment, oxidized water/sewage treatment, etc., can solve problems such as no technical solutions proposed, achieve good disinfection effect, ingenious design, and convenient preparation Effect

Active Publication Date: 2006-05-10
高唐绿荫环保科技有限公司
View PDF0 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This article only deals with the decolorization of mid-stage wastewater in terms of theory and application, and does not propose specific technical solutions to solve related problems

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
  • Decoloring method for paper-making middle section water
  • Decoloring method for paper-making middle section water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Introduce 1000 tons of mid-stage water after biochemical treatment (COD is 330mg / L, chromaticity 64 times) into the first-level folded plate reaction tank, and add 15kg of O in the tank 3 , reacted for 2 hours, entered the first-level stable pond through the first-level decolorized water, left it for 48 hours, and the chroma of the water was 32 times, entered the second-level folding plate reaction tank, and added 5kg of ClO to the second-level folding-plate reaction tank 2 , reacted for 1.5 hours, then entered the secondary stable pond, stood still for 48 hours, the color of the effluent was 16 times, entered the third-stage reactor, added 100kgPAFC (PAFC-B1 type, Changzhou Zhenbang Chemical Manufacturing Co., Ltd.), after 15 minutes , add 1kg of PAM (molecular weight 18 million, anionic, Yixing Angel Synthetic Chemical Co., Ltd.), react for 30 minutes, enter the sedimentation tank, when the water body color is 8, enter the third-level stable pond, stay for 20 hours, an...

Embodiment 2

[0050] Introduce 1000 tons of mid-stage water after biochemical treatment (COD is 350mg / L, chromaticity 64 times) into the first-level folded plate reaction tank, and add 20kg of O in the tank 3 , react for 1 hour, enter the first-level stable pond through the first-level decolorized water, let it stand for 50 hours, the chromaticity of the effluent is 32 times, enter the second-level folded plate reaction tank, and add 10kg of ClO to the second-level folded plate reaction tank 2 , reacted for 1 hour, then entered the secondary stable pond, stood still for 48 hours, the chroma of the effluent was 16 times, entered the tertiary reactor, added 200kgPAFC (PAFC-B 2 type, Changzhou Zhenbang Chemical Manufacturing Co., Ltd.), after 20 minutes, add 2kg of PAM (molecular weight 15 million, anionic type, Yixing Angel Synthetic Chemical Co., Ltd.), react for 22 minutes, enter the sedimentation tank, and the water body color is 8 o'clock , into the third-level stable pond, stay for 18 ho...

Embodiment 3

[0052] Introduce 1000 tons of middle stage water (COD is 310mg / L, chromaticity 64 times) after biochemical treatment into the first-level folded plate reaction tank, and add 19kg of O in the tank 3 , reacted for 1 hour, entered the first-level stable pond through the water of the first-level decolorization, left standstill for 36 hours, and the chroma of the effluent was 32 times, entered the second-level folding plate reaction tank, and added 7kg of ClO to the second-level folding-plate reaction tank 2 , reacted for 2 hours, then entered the secondary stable pond, left standstill for 55 hours, the effluent chroma was 16 times, entered the tertiary reactor, added 160kgPAC (first-class product, Changzhou Zhenbang Chemical Manufacturing Co., Ltd.), after 16 minutes, Add 1.5kg of PAM (molecular weight 18 million, anionic type, Gongyi City Lanxing Water Purification Material Factory), react for 22 minutes, enter the sedimentation tank, when the water body chromaticity is 8, enter t...

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 decolorization method for middle stage water in papermaking. The decolorization method adopts secondary oxidation decolorization and flocculation decolorization process to realize the purpose of the invention. The method has remarkable decolorization effect, low overall operating cost, stable decolorization without yellowing, large processing capacity, low one-time investment, ingenious design idea, convenient operation and management, and convenient preparation of decolorizing agent, so that the method of the present invention not only has remarkable flocculation decolorization Efficacy, but also has a good disinfection effect, the system water can fully meet the requirements of irrigation.

Description

Technical field: [0001] The invention relates to a method for decolorizing mid-stage water in papermaking, in particular to a method for decolorizing biochemically-treated mid-stage water produced in papermaking. Background technique: [0002] The entire production process of the pulp and paper industry requires a large amount of water, which collects a large amount of industrial harmful substances during the production process, which cannot be directly used, and directly discharged will pollute the environment. Recycling and reuse of middle water has significant economic and social value and determines the survival and development of papermaking enterprises. [0003] A large number of paper-making enterprises are researching and trying to recycle, treat and reuse water in the production process. Among them, after the industrial wastewater produced in the papermaking and pulping process has been treated and reaches the discharge standard, there are still some problems in it...

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): C02F9/04C02F1/78C02F1/76C02F1/52
Inventor 曹光春杨吉慧郭良进李晓光孙冰娜
Owner 高唐绿荫环保科技有限公司
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