Textile Industry Wastes

Textile industry wastes are categorized by their source. Man-made fibers constitute approximately 80% of the fibers used. Table 8.2.8 lists wastewater compositions from synthetic fiber finish mills, and Table 8.2.9 reflects performance data of the various treatment methods in reducing BOD, SS, color, grease, and alkalinity.

In textile wastes the suspended solids concentration is minute, the BOD range can attain 3000 ppm, and color can sometimes reach as high as 3000 APHA color units. Electroflocculation removes most color by electrolytically inducing flotation and collection of foam. Thereafter, biological or chemical oxidation can be utilized to polish the effluent and reduce the BOD to 25—virtually eliminating color. Such textile mill effluent is of sufficient quality to be recycled and reused.

0 0

Post a comment