the leachate taken from Alor Pongsu landfill site, Kerian, Perak. The effects of mixing speed and reaction time for various coagulant dosages and pH ranges were evaluated using a standard jar test. It was found that 99.5% of turbidity and 98.3% of colour were removed at 1 g/L dosage and an agitation speed of 220 rpm. Also, the mixing time of 3 min was chosen as the best agitation time as removal of 99.3% of turbidity and 98.2% of colour were achieved for the same dosage. The study inferred that the agitation speed and time are two important factors among the different mixing conditions that need to be determined in optimizing the coagulation/flocculation process. I think the best solution is Integrated Waste Management and land filling is not waste management but waste disposal. Efforts should be concentrated on waste recycling which should also involve source separation of waste to improve the quality of recycled products and reduce efforts in the processing of the solid waste for recycling activities. The best is to avoid waste generation. This seems to be difficult in our time where increase in consumption is a major marketing target to increase product use and economy and consequently recycling appears as ´the better solution.’ However, recycling is still an
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