Cold rolling tempering lubricant waste water treatment device and treatment method thereof

A wastewater treatment and leveling liquid technology, which is applied in metallurgical wastewater treatment, flotation water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of relatively large changes in water quality, serious pollution, and difficult treatment of wastewater chemical stability, etc. problems, to achieve good water quality, less investment, and less land occupation

Active Publication Date: 2009-06-17
MAIWANG INT BUSINESS SHANGHAI
View PDF0 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the leveling process, the leveling liquid wastewater is regularly discharged. Although the discharge of this type of wastewater is not large, it causes relatively large changes in water quality. The COD (chemical oxygen demand) concentration of the

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
  • Cold rolling tempering lubricant waste water treatment device and treatment method thereof
  • Cold rolling tempering lubricant waste water treatment device and treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] In order to make it easy to understand the technical means, creative features, objectives and effects achieved by the present invention, the present invention will be further explained below in conjunction with specific drawings.

[0043] Such as figure 1 As shown, a cold-rolled leveling liquid wastewater treatment device includes: a conditioning tank 1, a coagulation reaction tank 2, a CAF air flotation tank 3, an anaerobic treatment unit 4, and an MBR membrane biological reaction unit 5; its cold-rolled leveling liquid wastewater The processing method includes the following steps:

[0044] (1) Transport the leveling liquid wastewater to the regulating tank for oil recovery treatment, which is used to reduce the COD concentration and oil content in the leveling liquid wastewater;

[0045] (2) Transporting the leveling liquid wastewater that has undergone the oil recovery treatment in step (1) to the coagulation reaction tank, where the coagulation reaction is carried out,...

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 aims to disclose a device and a method for processing wastewater of cold-rolled leveling liquid. Floating oil in the levelling liquid wastewater is removed through a barrate oil receiving device; the dissolved or emulsified oil is removed through a high-efficiency CAF air floating pool, thereby having little investment and low operating expenses and saving occupied area; the water coming out from the CAF air floating pool enters an anaerobic treatment unit and an MBR membrane biological reaction unit; the water firstly passes through the anaerobic treatment unit, and the anaerobic treatment unit is used as pretreatment of an aerobic treatment unit, thereby avoiding the temperature problem met by aerobic treatment in the prior process and problems that certain organism can not be degraded under the aerobic condition, has overhigh load and impacts load and ensuring that aerobic outlet water is stable and meets the standard; the concentration of organism in the water can be reduced below 100 mg/LCODcr; and the treated water quality reaches first level standard stipulated by Integrated Wastewater Discharge Standard of People's Republic of China (GB8978-1996), thereby realizing the aim of the invention.

Description

Technical field [0001] The invention relates to a wastewater treatment device and a treatment method thereof, in particular to a treatment device and a treatment method for treating waste water containing leveling liquid (sizing liquid) in cold rolling of a steel plant. Background technique [0002] The leveling process is an important process in the production process of cold-rolled steel sheets in steel mills, and is a cold finish rolling process of strip steel after recrystallization and annealing. The wet leveling process in the leveling process can better ensure the realization of the leveling elongation of the cold-rolled steel sheet, and at the same time, it can better clean off the dirt on the surface of the cold-rolled steel sheet, improve the cleanliness of the strip surface, and maintain the leveling machine and The cleaning of each roll surface of the finishing unit avoids defects such as roll marks caused by impurity intrusion and adhesion, and prevents scratches on ...

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
IPC IPC(8): C02F9/14C02F1/40C02F1/52C02F1/24C02F3/28C02F103/16
CPCY02E50/30
Inventor 任翱李善仁
Owner MAIWANG INT BUSINESS SHANGHAI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap