Application of Natural Coagulants for Removal of Physio-Chemical Impurities from River Water

Abstract: Growing population, increased economic activity and industrialization has not only created an increased demand for fresh water but also resulted in severe misuse of this natural resource. Reusing wastewater by effective treatment can contribute to counter the water scarcity. Natural macromolecular coagulants show bright future and are concerned by many researchers because of their abundant source, low price, multifunction and biodegradation. The present study deals with the evaluation of treatment efficiency of natural coagulants Azadiracta indica and Cicer arietinum in removal of turbidity from waste water samples. The experiments were conducted at various proportions of dosages of natural coagulants Azadiracta indica (NC1) and the Cicer arietinum (NC2). The physio-chemical parameters of waste water such as pH, Colour, Turbidity, Total Dissolved Solids and Total Suspended Solids are measured before and after the treatment to evaluate the removal efficiency on the major pollutants of concerned in waste water treatment. Then, the experimental studies were carried out to find out the optimum dosage of natural coagulants. In this project, the optimum dosage Azadiracta indica and Cicer arietinum was indicated at 90 mg/L, respectively for Chitravathi river water. The Turbidity removal efficiency was 90% to 97% after treatment with NC1 and NC2 for dosage 70 to 100 Mg/L, respectively. From this study, high turbidity removal indicates that Azadiracta indica and Cicer arietinum powders has the potential for wastewater treatment application