Wastewater Treatment By Sorption-Coagulation-Flocculation Method In Silkwinding Industry

Abstract

In this work, experiments were carried out on the use of an adsorbent from local mineral raw materials of bentonite of the Navbakhor field in complex combination with coagulants, aluminium sulfate, polyacrylamide and sodium bisulfite.The chemical composition of the composition for wastewater treatment has been developed.The mechanism of formation of poorly water-soluble iron and aluminium oxy-hydrates, which are sorbed on the flocculent surface, is revealed.It has been established that the greatest effect (while the efficiency of treatment in terms of COD reaches 38-65%, in terms of colour intensity - 82-95%) of wastewater treatment of silk-winding industries when using aluminium sulfate as a coagulant is achieved in the range of pH values from 6.5 up to 8.