Suspended Solids Removal Efficiencies of a Barrier Board that Pre-Treats High-Turbidity Raw Water

Abstract:

It tends to produce high-turbidity raw water during the initial period of typhoons or storms and affect the operation of the purifying system. In this research, Raw water suspended solids roughly to 5,000-9,000 mg/l, the removal rate can be to about 70%-90 %, and reduced to 800 mg/l or less, 8 ml/s minimum about 100-400 mg/l. Overall, the quality of effluent water with the overflow water height increased removal rate rose gradually reduce the suspended solids concentration, gravity settling and effective appear, especially the section Ⅳ region (40 cm) removal are more than 80 %, flow 100 ml/s to 84 %, compared with I (10 cm) with 100 ml/s for 74 %, with obvious benefits. The overflow height of the flow of 8 ml/s, and suspended solids by the inlet concentration at 7,400 mg/l to 8,700 mg/l, down to the effluent concentrations are below 300 mg/l, which overflow height of 20, 30, and 40 cm can be reduced to below 200 mg/l, showing that gravitational sedimentation can significantly remove the high concentration of suspended solids.

• Periodical: Applied Mechanics and Materials (Volumes 253-255)
• Pages: 969-974
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.253-255.969
• Online since: December 2012
• Authors: Jian Liang Chen, Yi Kuo Chang, Chin Hsing Lai, Yun Hwei Shen
• Keywords: Barrier Board, High-Turbidity, Suspended Solid, Water Pre-Treatment

References

[1] Yung-Ya Wong: Master Degree thesis, National Cheng Kung University, Department of Environment Engineering (2003)

[2] Chi-Chuan Kang: Master Degree thesis, National Chiao-Tung University, Department of Environment Engineering (1996)

[3] Environmental Protection Administration: Taiwan (2009)

[4] Yagi M., K. Mizukawa, M. Kajino, S. Tatumi, M. Akiyama, and M. Ando: Water Supply, Vol. 10 (4) (1992), pp.65-75

[5] Shih, W. K. and Chiang, C. L.: Proceeding 4th International Workshop on Drinking Water Quality Management and Treatment Technology (1998)

[6] Taipei Water Supply Department.:(1998)

[7] Erma, D. R. and Agarwal, S. K.: Water Science and Technology, Vol. 40 (2) (1999) pp.137-141

[8] Yu-Chun Lin: Master Degree thesis, National Taipei University of Science and Technology, Department of Chemical Engineering (1999)

[9] Jian-Liang Chen: Article for the 7th Cross-the-Strait Water Environmental Protection Scholastic Seminar (2010).