TY - GEN
T1 - Particle removal efficiencies of a barrier board that pre-treats high-turbidity raw water
AU - Chen, Jian Liang
AU - Chang, Yi Kuo
AU - Lai, Chin Hsing
AU - Shen, Yun Hwei
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - 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, the particles size (D98) in raw water was 100-125 μm; that in effluent water was <25 μm. When was under 8 ml/s, effluent water D98 was <10 μm. Flow ratio mitigation and the increase of overflow level can improve the particle removing ratio In aspect of particle size analysis, optimal operating conditions can be achieved setting an 8 ml/sec and 40cm overflow level and D98 grain size can be reduced to 6.25μm as well, particle size removal ratio will gradually climb with the increase of accumulated percentage so that it can reach 70 % for the respective effluent water under D50 and even becomes over 80 % under D98. When under D90, the removing ratio can even go beyond 90 % at an 8 ml/s of flow ratio. Therefore, the proposed pre-treatment reduces high turbidity due to the sudden increase of raw water to the barrier in front of the board.
AB - 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, the particles size (D98) in raw water was 100-125 μm; that in effluent water was <25 μm. When was under 8 ml/s, effluent water D98 was <10 μm. Flow ratio mitigation and the increase of overflow level can improve the particle removing ratio In aspect of particle size analysis, optimal operating conditions can be achieved setting an 8 ml/sec and 40cm overflow level and D98 grain size can be reduced to 6.25μm as well, particle size removal ratio will gradually climb with the increase of accumulated percentage so that it can reach 70 % for the respective effluent water under D50 and even becomes over 80 % under D98. When under D90, the removing ratio can even go beyond 90 % at an 8 ml/s of flow ratio. Therefore, the proposed pre-treatment reduces high turbidity due to the sudden increase of raw water to the barrier in front of the board.
UR - http://www.scopus.com/inward/record.url?scp=84872970742&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84872970742&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMM.253-255.921
DO - 10.4028/www.scientific.net/AMM.253-255.921
M3 - Conference contribution
AN - SCOPUS:84872970742
SN - 9783037855645
T3 - Applied Mechanics and Materials
SP - 921
EP - 926
BT - Sustainable Development of Urban Infrastructure
T2 - 2nd International Conference on Civil Engineering and Transportation, ICCET 2012
Y2 - 27 October 2012 through 28 October 2012
ER -