V. SMITHA ASOK AND A.S. SREELA
Abstract
Industrial effluents are primarily derived from chemical manufacturing and processing and the nature of constituents in the effluents is determined by the raw materials used, the type of process employed and the efficiency with which materials are removed from the effluent either through recovery processes or effluent treatment. Hindustan Lifecare Limited (formerly Hindustan Latex Limited) is an Indian healthcare products manufacturing company based in Thiruvananthapuram, Kerala, which has its own Effluent Treatment Plant. The present study is an attempt to analyze the stage-wise reduction in pollutant load in the ETP of HLL so as to assess its efficiency of functioning with regard to some important physico-chemical parameters present in the different stages of water treatment. After each stage of treatment there is a gradual change in these parameters.