Research on Utilizing Environmental Friendly Materials of Barrier Board for Turbidity Reduction of High-Turbidity Raw Water

The high-turbidity raw water was formed during the initial period of typhoons or storms, and it affected the operation of the water supply purifying system. In this research, the raw water with various turbidity levels (1,500~5,500 NTU) was used, a barrier board treatment was used to extend the flowing route and varied flow rates were also employed to carry out the treatment of high-turbidity raw water. The experiment results indicated that under a flow rate at designed 8, 17, 50 and 100ml/s, the majority of the effluent water was between 100~1,000 NTU, exhibiting an 50% to 90% removal rater. In view of this, a certain degree of the turbidity could be reduced applying barrier board treatment and suitable for consequent water supply purifying system.