The composition of industrial wastewaters is not the same for each type of
effluents. Other compositions have dyeing effluents, and are drastically different from
tanneries. Therefore, in this chapter a special mention is realized about the
characteristics of wastewaters and various physic-chemical properties.
Keywords: BOD, COD, composition, dyeing effluents, industrial wastewaters,
insecticides, ions, pesticides, phenols, phenols, SS, tannery effluents.
