Removal of Turbidity and TDS from Wastewater by Using Natural Coagulants — A Review

Abstract

The highest quantity of wastewater is produced from lather industries that is mixed with oil and other pollutants and under goes to the drains from sinks, toilets, laundries, showers, etc. The wastewater is usually classified as industrial wastewater or municipal wastewater. As the population of the earth is very huge, there is a requirement that the treatment of wastewater become necessary by using different techniques. The removal of TDS and Turbidity are here done by natural coagulants such as Strychnospotatorum, Passion fruit, Phaseolus Vulgaris, Chitosan, Cicer Arietinum, Cactus, Nirmali seeds, Vingna Mungo, Ripe Okra, Surjana seed powder (SSP), Orange peel, Moringa Oleifera, and Maize seed powder. This is found from the literature review that; Jar tests were prominently used in the coagulation-flocculation process for the removal TDS and Turbidity from wastewater. The objective of this review is to find out the scope of different natural coagulants as an alternative compared to other commercial chemical-based coagulants. It has been found from the literature review that these natural coagulants are alternative, cheaper, eco-friendly, and easy to use in wastewater treatment.