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Electroplating wastewater treatment --- Case study
About Electroplating Wastewater• Electroplating wastewater comes from surface plating operations
where the metal is dipped in an electroplating solution of various types of metals and then rinsed.
• Typical plating includes brass, nickel, cadmium, zinc, silver, copper, and gold. Electroplating wastewater is typically from washing, rinsing and batch dumps and is at a low pH of ~3-5 and contains soluble forms of the various metals. In order to remove soluble metals from the wastewater it must first be made insoluble. The insoluble metal is then coagulated, flocculated and clarified by sedimentation.
• The typical method to reduce and remove soluble electroplating metals from wastewater is as follows:
Practical Case
Basic Info
•Project： 900TPD waste water reuse system for Heyuan Water Industrial Park•Capacity： 900m³/d•Feed water type： electroplating wastewater•Product water quality： achieve the water quality standard for urban miscellaneous water consumption（ GB18920-2002）
Water quality standardNo. item unit Discharge standard
1 PH - 6-9
2 Cr6+ mg/L 0.05
3 Total Cr mg/L 0.1
4 Total Cu mg/L 0.5
5 Total Ni mg/L 0.05
6 Total Zn mg/L 1.0
7 Total Fe mg/L 10
8 cyanide mg/L 0.5
9 CODcr mg/L 20
10 SS mg/L 10
11 conductivity μm/cm 300
Process decriptionThis zero liquid discharge water reuse project has been completed in a pharmaceutical company in Inner Mongolia, which is the largest in the use of MFT super RO membrane, recovery rate goes up to 90%. The wastewater consists of penicillin pharmaceutical wastewater, water system brine, recycled water drainage and biological effluent water. The project has been commissioned in December 2014 and under normal operation ever since, treating 6300 tons of wastewater per day. The entire treatment process use more than one thousand membranes including UF membrane, spiral wound RO membrane and super RO membrane.
Process
On-site Photos
Thank You
Contact info
Web:www.conhoo.com
Email: [email protected]
Tel: +86 20 3112 9583
Fax: +86 20 3112 6793
