Quality of waste water effluent from waste water treatment plant UiTM Pulau Pinang using sand filtration / Lungan Ega

In this study, wastewater effluent from UiTM Pulau Pinang wastewater treatment plant is taken as the first sample (initial reading) and effluent that is pass a sand filtration process as a second sample (final reading). The entire sample taken was evaluated and tested using experiment method in UiTM Pulau Pinang Environmental Laboratory to test the parameter. The result is compared to WHO, INTERIM and EQA (A and B) standard.
A small model of sand filter was constructed with sand and gravel as a filter media. It is open sand filter where the sand filter surface is open to the atmosphere Sieve analysis was carrying out to evaluate the media. The effluent passes with vertical movement to downward using gravity force or gravity flow.
Sand filtration can improve wastewater quality such as to reduce pollutants in wastewater. The sand filtration effluent can use for domestic purposes such as cleaning and watering plant, in fact to reduce water consumption.
Properly designed and functioning sand filters can provide for enhanced BOD5, COD, SS removal, color reduction, and heavy metal of wastewater effluent. In this study sand filtration can remove suspended solid, BOD5, COD, color, ammonia, chromium and zinc, but sand filter is very effective in suspended solid removal and can achieved until 100 percent removal compared to other parameter. It is also can adjust pH values. This study shows that the sand filter improves the wastewater effluent into a better quality water confirm to the WHO Drinking Standard Guidelines, EQA (1979) and the Interim National River Water quality standard for Malaysia (within class 1 and IIA) which makes its suitable for a variety of non potable uses.