Research on Water Treatment of Kongmu-Lake based on Micro Vortex Flocculation Technology with the combination of vortex reactor

Abstract

Aiming to solve the problems of greater blindness and randomness in selecting design and operating parameters of micro vortex clarifier, this experiment used the Kongmu-Lake water as the research object to investigate the effects of flocculation time and coagulant dosage on flocs performance and flocculation efficiency under different working conditions, and the best parameter of vortex reactor dosage ratio and operational limits of the micro-vortex flocculation tank are optimized. The raw water flows through the type of HJTM-2 vortex reactor firstly, and the ratio of flocculation time that water flow through the type of HJTM-2 and HJTM-1 vortex reactor is 1:2. Under the best optimal working condition, the best coagulant dosage is 22mg/L and the flocculation time is 14.3min. At this time, the removal rate of turbidity, CODMn, UV254 reached 96.81%, 64.12%, 55.56%, respectively. The maximum floc equivalent diameter is 1.39mm, and the fractal dimension is 1.73.