COD Reduction by Adsorption in Dyes & Dyes Intermediate Industry

In rapid industrialization of dyes and intermediate industry waste water treatment is the crucial problem. In dye and intermediate industry effluent, main problem arise is the COD reduction. Current days many industry used primary and secondary waste water treatment such as aeration. But in this method COD reduction rate is small as compare to tertiary treatment.

This paper includes COD reduction in dye & intermediate industry, particularly in H-acid by adsorption by using activated carbon and low cost lignite. Experimental work have been carried out by using this two adsorbent.COD reduction is depend upon two factors one is concentration of adsorbent and time of adsorption. At some concentration and some time.