Abatement of Polluting Effects of Waste Dump Leachates using Different Coagulants

Oso, S; Soyingbe; O.; Terebo; O; Olayinka; O; Bamgbose; A.M; Taiwo; A.A.

Authors

Oso, S
Soyingbe
O.
Terebo
O
Olayinka
O
Bamgbose
A.M
Taiwo
A.A.

Keywords:

leachates, coagulants, jar test, removal efficiency, seasonality

Abstract

This study assessed the effectiveness of different coagulants for treating leachates before their release into the environment. Three inorganic coagulants (ferric chloride, ferrous sulphate and alum) and one organic coagulant [Moringer Oleifera seed (MOS)] were used in a jar test to determine the optimum pH and dosage for the coagulants. Raw and treated leachates were analysed for physiochemical parameters such as pH, chemical oxygen demand, Total solids, Pb and Cr. The optimum pH for ferric chloride, ferrous sulphate, alum and MOS was 7, 7,6 and 10 respectively. While the optimum dosage for each coagulant was 3g/L, 3g/L, 5g/L and 5g/L respectively. The analysis of the raw leachate sample showed that it was highly polluted (Dry season: COD -3000mg/L, TSS -2369mg/L, Cr -0.075mg/L, Pb -0.25mg/L and Mn -0.29mg/L; Wet season: COD -3000mg/L, TSS -2369mg/L, Cr -0.075mg/L, Pb -0.25mg/L and Mn -0.29mg/L). Coagulants removal efficiency (RE) for COD ranges from 12% to 41% with ferric chloride having the highest removal efficiency.

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How to Cite

Abatement of Polluting Effects of Waste Dump Leachates using Different Coagulants. (2022). Global Journal of Human-Social Science, 22(B3), 55-65. https://socialscienceresearch.org/index.php/GJHSS/article/view/103441

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