Background
In the metal material processing, machinery manufacturing and other industries, emulsions are usually used as coolants or lubricants. After the emulsion is used repeatedly for many times, it is deteriorated and becomes a waste emulsion to be discharged. Although the water content is not large, the CODcr content is as high as several thousand to 200,000 mg/L, and the oil content is also high. Because the oil is emulsified as O/W forms, traditional filters and bio-chemical way can hardly treat. If the emulsion is discharged directly without treatment, it will bring serious harm to the environment.The main components of this type of wastewater are mechanical oils, surfactants, soluble organic matter and solid suspended solids.
Disadvantages of traditional process:
● Not good quality of treated water
● High consumption of chemicals
● Much floor space
● Low reliability of performance
● Low recovery rate of oil
● High running cost
● High solid waste discharge
● Complicated operation and maintenance
CRM Membranes for Emulsion Treatment
Ceramic membrane filtration method is currently a new process and is suitable for most emulsions. For emulsion treatment by membrane filtration technology, the effluent water quality is good and reused repeatedly, the management is simple, achieving better results.
Process Diagram
Process Advantages
High quality of filtrate with high rejection of oil
Reliable and stable performance
A green process without chemical agent
Valuable oil and coolants can be recycled
Low operating cost
Long membrane worklife
Reduce solid waste discharge
Low labor and maintenance cost
Compact design with small foot print
Reference and Cases:
Cutting fluid emulsion in machenical industry
Degreasing bath emulsion treatment
Cold-rolling emulsion in steel industry
CIP caustic stream treatment
If you need more details about ceramic membrane process for oily emulsion water treatment in machinery industry,please do not hesitate to contact with us or send email to us. We sincerely welcome your visit to our plant and reference projects.TANGENT is willing to communicate and share information with you on engineering process issues. We are looking forward to developing more market and more applications with your help, bring this new technology to end users, create more values and benefits for all parties.
