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Abstract
In this project, preliminary investigation was carried out for the possible use of natural coagulants for treatment of waste water. The industrial wastewater were treated by coagulation-flocculation and sedimentation using dyeing water extracts of Opuntia- Ficus Indica Gel as primary coagulant. The quality of the treated wastewater was analyzed and compared with Alum and gel. The experiments were conducted at various dosages of the dyeing water extract of Opuntia- Ficus Indica gel using jar-test experiment. The optimum dosage of the coagulant dosage was identified. Parameters of quality of the wastewaters were measured before and after the treatment to evaluate the removal efficiency on the major pollutants of concern in waste water treatment, such as BOD, pH, TDS, Turbidity, Hardness, Alkalinity, and Chloride. Result showed that the Opuntia- Ficus Indica gel were efficient as a primary coagulant in wastewater treatment and maintains pH. From the observed results, the Cactus is a suitable dyeing effluent. Compared to Alum, natural coagulants (Cactus Gel) gives better results.