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

Reverse osmosis concentrated water treatment process and treatment system in cold rolling steel plant

A technology of reverse osmosis concentrated water and treatment process, which is applied in the field of reverse osmosis concentrated water treatment process and its treatment system in cold rolling steel mills. It can solve the problems of increasing project investment and wastewater treatment operation costs, and achieves simple structure and stable operation. , obvious economic and social benefits

Inactive Publication Date: 2011-12-14
WISDRI ENG & RES INC LTD
View PDF6 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Evaporation and drying of reverse osmosis concentrated water or adding a special wastewater treatment device will also increase project investment and operating costs of wastewater treatment

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
  • Reverse osmosis concentrated water treatment process and treatment system in cold rolling steel plant
  • Reverse osmosis concentrated water treatment process and treatment system in cold rolling steel plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The reverse osmosis concentrated water treatment process in cold rolling steel mills includes the following steps:

[0024] 1) Concentrated reverse osmosis water (first-stage reverse osmosis concentrated water) first enters the regulating tank (wastewater stays in the regulating tank for 4 to 6 hours, the main function is to resist impact load and homogenize water quality), and the reverse osmosis treated by the regulating tank Infiltrate the concentrated water into the ozone contact reactor, use the strong oxidizing property of ozone to inorganicize or degrade the difficult biodegradable organic substances in the reverse osmosis concentrated water into biochemical substances, and decompose the macromolecular organic substances into small molecular organic substances;

[0025] 2) The effluent treated by the ozone contact reactor enters the attenuation pool (note that there is no need to add anything to the attenuation pool). After passing through the attenuation pool, th...

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 belongs to the technical field of wastewater treatment in the metallurgical industry, and in particular relates to a reverse osmosis concentrated water treatment process and a treatment system of a cold rolling steel plant. The reverse osmosis concentrated water treatment process in cold rolling steel mills is characterized in that it includes the following steps: 1) the reverse osmosis concentrated water first enters the adjustment tank, and the reverse osmosis concentrated water after the adjustment treatment in the adjustment tank enters the ozone contact reactor; 2) passes through the ozone The effluent treated by the contact reactor enters the attenuation tank, and the wastewater treated by the attenuation tank enters the MBR membrane bioreaction tank. The effluent after liquid separation is pumped into the intermediate water production pool by the suction pump to obtain the intermediate water production; 3) The intermediate product water is pumped into the reverse osmosis unit through the high pressure pump for the second reverse osmosis desalination treatment; the effluent treated by the reverse osmosis unit It is used as reuse water; the concentrated water produced by the reverse osmosis unit is directly discharged. The process has the characteristics of high waste water recovery rate.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment in the metallurgical industry, and in particular relates to a reverse osmosis concentrated water treatment process and a treatment system for cold rolling steel mills. Background technique [0002] The cold rolling production process will generate a large amount of wastewater, including acid-base wastewater, oily and emulsion wastewater, and leveling fluid wastewater. Its conventional treatment process is neutralization reaction, coagulation, air flotation, contact oxidation, precipitation, filtration and discharge after reaching the wastewater discharge standard. To achieve energy saving and emission reduction, the water must be recycled. The common process is to use ultrafiltration After deep desalination treatment with reverse osmosis, it can be reused as circulating cooling water. In the actual operation process of reverse osmosis technology applied to the advanced treatment and ...

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): C02F9/14
Inventor 贺杏华万焕堂
Owner WISDRI ENG & RES INC LTD
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