Supercharge Your Innovation With Domain-Expert AI Agents!

Method for circulation utilizing coating waste-water

A coating wastewater and coating technology, applied in chemical instruments and methods, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of unstable use of membrane technology and high operating costs, reduce emissions and improve economical Benefit, the effect of reducing water consumption

Inactive Publication Date: 2008-08-13
HAINAN JINHAI PULP & PAPER
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bacterial content needs to be controlled throughout the process, and the use of membrane technology is unstable and the operating cost is high, which is a bottleneck for its widespread use

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

[0018] Recycle the paint wastewater generated during the production process of the paint workshop. After the paint wastewater is buffered in the buffer tank, the water quality is stable, and the solid content is 2%. Pump the waste water to the mixing tank and add 800-1000ppm of polyaluminum chloride and 30ppm of electricity neutralizer N3448 (NALCO Suzhou company product) at the same time. After fully mixing in the mixing tank, it enters the settling tank. The settled coating slurry is buffered and solidified. steady at 10%. Then enter the disperser and add 0.2% PA40 (product of HOPAX company) to the coating slurry for decomposition, finally produce 10% decomposed coating slurry. Adding the slurry to the preparation process of the paint can reduce the water consumption of the paint preparation from 0.3 ton of water / ton of paint to 0.10 ton of water / ton of paint.

[0019] The prepared coating is used to coat ordinary 128gsm coated paper, and has no effect on the quality of th...

Embodiment 2

[0021] Recycle the paint wastewater generated during the production process of the paint workshop and during the application process of the coater. After buffering the obtained paint wastewater in the buffer tank, the water quality is stable, and the solid content is 2.5%. Pump the wastewater to the mixing tank and add 800-1000ppm of polyaluminum chloride and 50ppm of electricity neutralizer (N-3448) at the same time. After being fully mixed in the tank, it enters the settling tank, and the settled coating slurry is stabilized at 12% by buffering. Then enter the disperser and add 0.15% 211GE (product of Baoshi Amway Suzhou Co., Ltd.) to the paint slurry for decomposition, finally produce 12% decomposed paint slurry. Adding the slurry to the preparation process of the paint can reduce the water consumption of the paint preparation from 0.30 ton of water / ton of paint to 0.14 ton of water / ton of paint.

[0022] The prepared coating is used to coat ordinary 128gsm coated paper, a...

Embodiment 3

[0024] Recycle the paint wastewater generated during the production process of the paint workshop. After the paint wastewater is buffered in the buffer tank, the water quality is stable, and the solid content is 1.7%. Pump the waste water to the mixing tank and add 800-1000ppm of polyaluminum chloride and 15ppm of electricity neutralizer N3448 (NALCO Suzhou company product) at the same time, fully mix in the mixing tank and then enter the settling tank, the settled coating slurry is buffered and solidified steady at 10%. Then enter the disperser and add 0.2% 211GE (product of Baoshi Amway Suzhou Co., Ltd.) to the paint slurry to decompose, finally produce 10% decomposed paint slurry. Adding the slurry to the paint preparation process can reduce water consumption to 0.15 tons of water / ton of paint.

[0025] The prepared coating is used to coat ordinary 128gsm coated paper, and has no effect on the quality of the finished paper.

[0026] The invention can effectively reduce 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 paint waste water recycling method, which comprises the following steps: adding fitful polymerized aluminium chloride and neutralizer in the paint waste water to proceed chemical flocculation; losing partial water through gravity depositing condensation; forming paint slurry; adding chemical agent in the paint slurry; decomposing into stable condition with even grain size; replacing partial manufacturing technological water to recycle in the preparing course of paint.

Description

1. Technical field [0001] The invention relates to a method for treating wastewater in papermaking, in particular to a method for recycling paint wastewater in papermaking. 2. Background technology [0002] With the development of industry, the discharge of industrial water and waste water is also increasing. The discharge of a large amount of wastewater not only wastes limited water resources, but also the chemical substances in the wastewater have brought serious pollution to the environment, destroyed the ecological balance of the environment, and also caused great harm to the growth of animals and plants and people's lives. hazards. Especially in the papermaking process, a large amount of paint-containing wastewater will be generated during the production, storage, transportation, coating and system cleaning of coatings in coated papermaking. The ingredients of papermaking coatings include pigments, adhesives, and various chemical additives, etc. Therefore, there are m...

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): C02F9/04C02F1/52C02F1/463
Inventor 戴东昌
Owner HAINAN JINHAI PULP & PAPER
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com