Canteen Greasy Water Treatment |
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Description
Principle
- Electroflocculation is a technique involving an electrolytic addition of coagulating ions directly from sacrificial electrodes, and so to remove emulsified oil and grease content from the wastewater.
- During electrolysis, the coagulating ions are dissolved in wastewater and they coagulate the emulsified oil and form small flocs, which flows at the water surface.
- The floating flocs can then be easily removed from the surface and collected as sludge.
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Location
- Floor 3, Car Park, Bank of China (Hong Kong) Complex
- Service Road, Bank of China (Hong Kong) Complex
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Notes
Due to safety reasons, site visit can be arranged by advance booking.
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Enquiry
Mr. Alan Wong (CDO)
Tel: 3442 6879
Email : fmalan@cityu.edu.hk
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More Information
Government allowable discharge limits
- Oil and Grease: 50 mg/L
- pH : 6-10
- Biochemical Oxygen Demand (BOD): 900 mg/L
- Chemical Oxygen Demand (COD): 2,200 mg/L
Conventional Methods
- Under-sink grease trap
- Oil filter
- Large Grease Trap
- De-grease biological enzyme
cannot control Oil & Grease within limit for high flow rate
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