Treatment of Dyeing Industry Effluents by Using Diverse Bioadsorbents

Adsorption as a water and wastewater treatment process has aroused considerable interest during recent years. Activated carbon is most commonly used adsorbent. Dyeing effluents are highly toxic and unaesthetic, therefore, their treatment is mandatory prior to discharge. Hence, in the present work an attempt has been made to study the possibilities of employing tea waste, saw dust, rice husk, groundnut husk and walnut shell has bioadsorbents to improve the quality of dyeing effluents. The main parameters studied were pH, EC, TS, TDS, TSS, BOD, COD, calcium, magnesium, sulphate, chloride and sodium in both treated and untreated effluents. A decline in the levels of all these parameters were observed after the treatment.