Study on the Treatment of HNS Production Wastewater by Composite Flocculants

Flocculation performance of HNS wastewater treated by using synergy of microbial flocculant SY-6 and inorganic flocculant FeCl3was studied,and the dosage,dosing sequence,pH and temperature were optimized.The results showed that the treatment efficiency of composite flocculants is better than that of single flocculant,and the removal efficiency of COD was 70.77%,the flocculation rate was 72.7%,the removal rate of chromaticity was 84%.