Global Journal of Human-Social Science, B: Geography, Environmental Science and Disaster Management, Volume 22 Issue 3

Figure 10: Alum percentage removal efficiency for COD Figure 11: MOS percentage removal efficiency for Cr, Pb and Mn Figure 12: MOS percentage removal efficiency for COD Alum exhibited a good performance in the sample parameters compare to other coagulants. Table 2 shows that the coagulants were able to reduce heavy metals from the leachates samples to level below standard limits but COD and TSS still had values higher than the recommended standards. Volume XXII Issue III Version I 62 ( ) Global Journal of Human Social Science - Year 2022 © 2022 Global Journals B Abatement of Polluting Effects of Waste Dump Leachates using Different Coagulants