Coagulation and flocculation of contaminated bauxite water at Sungai Pengorak by using linear polysaccharide biocoagulant
Bauxite is a naturally occurring, heterogeneous weathering product composed primarily of one or more aluminium hydroxide minerals, plus various mixture of silica (Si2), iron oxide (Fe203), Titania (Ti,-) and other impurities in minor or trace amounts (Shaffer and Patterson et al, 1983) . Aluminium t...
| Summary: | Bauxite is a naturally occurring, heterogeneous weathering product composed primarily of one or more aluminium hydroxide minerals, plus various mixture of silica (Si2), iron oxide (Fe203), Titania (Ti,-) and other impurities in minor or trace amounts (Shaffer and Patterson et al, 1983) . Aluminium toxicity in soils is particularly harmful because it causes shallow rooting, drought susceptibility, and deficient nutrients input.
Bauxite forms a major resource of aluminium in Kuantan, Pahang. The objective of this research work is to investigate the potential and effectiveness of Linear Polysaccharide as biocoagulant to coagulate and flocculate the bauxite contaminated river at Sungai Penggorak, Kuantan, Pahang. Sample water river from Sungai Penggorak are been collected. Nine parameter are determined which is ph, Total Dissolved Solid (TDS), Dissolved Oxygen (DO), Turbidity, Colour, Total Suspended Solids (TSS), Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD) and Ammonia Nitrate (AN). Then, it treated using conventional of coagulation and locculation method by using Linear Polysaccharides as biocoagulant. The water quality condition are measured on its classes which is Class I, II, III, IV or VI by using Water Quality Index (WQT), Interim National Water Quality Standard (INWQS) and National Drinking Water (NDWQS). The selection of and optimum dosages of, pH and hydraulic retention time (HRT) are determined experimentally by using conventional Jar Test. The results indicated that the optimum dose which is I g/L was sufficient to improve the water quality parameter to safe level at pH 7. The results was followed the drinkable standards of (WQI), (INQWS) and (NDWQS) from Class TV to Class I which is tested at optimum conditions. |
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