STUDY ON CHEMICAL CHARACTERIZATION OF PARBOILED RICE MILL EFFLUENTS OF MIRYALAGUDA, NALGONDA DIST., T.S.

Industrialization has a negative impact on life when discharges are not treated, which can result in water and soil pollution. The regulatory treatment of contaminants is continually changing to more stringent standards in order to protect the environment overall quality and public health. As a result, organic contaminants have become a major challenge in the industrial wastewater treatment process. Parboiled rice mills make a major contribution to the pollution of water bodies and the environment by releasing significant volume of effluent as waste water. The objective of this study was to assess the amount of organic pollution in wastewater produced from parboiled rice mills in the town of Miryalguda, Nalgonda dist, Telangana state (India). Three separate parboiled rice mills were used to obtain the waste water samples. In accordance with the recommended APHA protocol, the samples were examined for pH, Electrical conductivity, Total hardness, Total Dissolved Solids (TDS), Biological oxygen demand (BOD), Chemical oxygen demand (COD), Chlorides, Phosphates, Calcium, and Magnesium. The parboiled rice mill effluents were chemically characterized, and the results revealed that the pH (5-6.5), EC (1521-1582 µs/cm), BOD (2395-2698), COD (6402-7102), Total Hardness (511-548), Calcium (166-256), Magnesium (32-40), TDS (1459-1872), and Phosphates (22-34). The results of the physicochemical examination show that all of the samples are contaminated and have values greater than permissible limits. Few more corrective and preventive steps to be made to prevent water pollution by the parboiled rice mill effluents.