• Samridhi
• Dr. Sanjay sharma
• Jyothi
• Divya Chaudhary

Industries play a vital role in economic growth of nation as well as employing workers whether skilled or unskilled. But the use of chemicals, dyes and surfactants in various processes of different industries produces massive amount of waste as sludge, fibres and chemically polluted water. This waste water degrades the quality of water when it is mixed with natural resources and its dependent habitats and environment. Waste water from industries has become nuisance for rivers and for environment. It does not only endanger the environment as well as human health. This study is a review of application of physico-chemical techniques for waste water treatment of industries. It provides a guidance to treat the industrial effluent of various industries using physical and chemical treatment. The main objective of this study is to give an overview of different parameters of waste water i.e. pH, TDS, SS, COD, BOD, Oil and grease etc. before treatment and after treatment. This paper deduces that the parameters of waste water were found satisfactory after physico-chemical treatment. Many researchers studied the effluents of industries using physico-chemical methods and analysed many parameters affecting the quality of water i.e. COD, Oil and grease, surfactants, BOD, TDS and after treatment found these parameters under limit.

"WASTE WATER TREATMENT OF INDUSTRIES USING PHYSICO CHEMICAL TECHNIQUE: A REVIEW", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.892-894, June-2019, Available :http://www.jetir.org/papers/JETIR1906E85.pdf

"WASTE WATER TREATMENT OF INDUSTRIES USING PHYSICO CHEMICAL TECHNIQUE: A REVIEW", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp892-894, June-2019, Available at : http://www.jetir.org/papers/JETIR1906E85.pdf