project name: jinchang city, gansu water supply project
project time: september 2006
use of technology: advection settling tank, v-type filter
technical advantages: the processing capacity is increased by more than 30%, the effluent water quality is less than 0.3 ntu, the drug consumption is reduced by 40%, the chlorine consumption is reduced by 30%, the backwashing water consumption is reduced to 0.9% of daily production, and the filter operation period is prolonged to more than 48 hours .