Water quality and environmental assessment of sugar mill effluent
Journal Title: Journal of Research in Biology - Year 2012, Vol 2, Issue 2
Abstract
Waste water samples from sugar industry were collected and analyzed for various water quality parameters like appearance, colour, odour, temperature, turbidity, Total dissolved solids (TDS), electrical conductivity(EC), pH, Total Suspended Solids(TSS), chloride (Cl-), sulphate, Calcium, Magnesium, carbonate, bicarbonate, Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Dissolved Oxygen (DO), Total acidity (TA), Iron, Sodium and dissolved phosphate for a period of six months in order to understand the extent of pollution. Sugar mill effluent showed the pH 7.5, low value of dissolved oxygen, high values of BOD (123 mg/l) and electrical conductivity (1799 mmhos/cm) which indicates that it affects the aerobic respiration of organisms and hence it is not suitable for aqua culture and irrigation purposes. Sodium Absorption Ratio (SAR), Kelly’s Ratio (KR), Percent Sodium (PS), Magnesium Ratio (MR), Residual Sodium Carbonate (RSC) and Water Quality Index (WQI) were computed. Even though SAR (5.41), KR (0.24), PS (40.98) and MR (33.19) are well below the desirable limits suitable for irrigation, high RSC (579.17mg/l) and WQI (114.35) indicate the high pollution nature of sugar mill effluent. Therefore the sugar mill effluent is unsuitable for aquatic life and irrigation. It must be treated before discharge in to the land and water system
Authors and Affiliations
Sarala Thambavani D, Sabitha MA
Keywords
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