Evaluation of the Irrigation Water Quality of a Canal Contaminated with Textile Dyeing Industry Effluent (original) (raw)

The textile dyeing industries discharge untreated effluent into nearby surface water bodies and introduce large numbers of inorganic, organic toxic compounds containing suspended solids, color, etc., which pose a threat to use for irrigated agricultural lands and human health. The study aimed to assess the irrigation water quality of textile dyeing industry effluent-contaminated canal water. The canal water samples were collected from several locations, analyzed for various physicochemical parameters, and assessed for water quality using multivariate statistical analysis and several water quality indices. The analysis results illustrated that the high levels of electrical conductivity (EC), total suspended solids (TSS), turbidity, Na+, NO3-, PO43-, HCO3-, BOD, and COD in the wastewater samples exceeded the DoE-BD standard limits, indicating a higher level of pollution of the canal water. Concerning heavy metal concentrations, Pb was found to be at a higher level in the water. Moreover, irrigation water quality indices such as permeability index (PI), Kelly’s ratio (KR), sodium adsorption ratio (SAR), and magnesium adsorption ratio (MAR) were found to be higher than the standard limits. The multivariate cluster analysis showed that the two clusters were found among the eighteen sampling sites that included heavily contaminated sites. The discharge of industrial effluent into canal water has a detrimental effect on agricultural products. The study observed that the canal water is not suitable for irrigation purposes, and thus the textile dyeing industrial effluent must be treated by installing an environmentally friendly effluent treatment plant (ETP) before being dumped into surface water bodies, which will help reduce environmental pollution as well as develop sustainable surface water resource management.