Waste Water Treatment
Effluent, generated or arising from the transfer station, will be monitored before discharging into foul sewer. All effluent discharge should meet the discharge standard according to the Technical Memorandum of Water Pollution Control Ordinance. The discharged volume is measured and samples are sent to laboratory for analysis. Major testing parameters include :
Biochemical Oxygen Demand (BOD)
Chemical Oxygen Demand (COD)
Oil and Grease (OG)
pH
Suspended Solids (SS)
1. Waste Water Collection
| A rundown screen is used to remove the gross solids in the waste water collected and waste water is discharged to the waste water collection tank. |  |
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The waste water collection tank removes oil and grease using an oil mop device. |
| Waste water is pumped to the two sequencing batch reactor tanks. |  |
2. Waste Water Treatment
The two sequencing batch reactor tanks operating in parallel which will have the facility for trace element, nutrient addition, and minor pH correction.
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The sequencing batch reactor tanks will react and settle the waste water on everyday in order to reduce the amount of BOD, COD and other pollutants in waste water. |
| The treated effluent collected at the outlet buffer tank is tested before it is discharged to public foul sewer. |  |
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EPD staff takes samples of the effluent regularly to ensure the treatment system is functioning properly to discharge standards. |
| The sludge from waste water treatment is dewatered by a filter press after conditioned in the sludge tank. |  |
