標題: Operational performance of sludge blanket in clarification: effect of organic matter
作者: Huang, Chihpin
Lee, Tinlai
Pan, Jill R.
Hon, Jaiwai
環境工程研究所
Institute of Environmental Engineering
關鍵字: coagulation;organic removal;sludge blanket clarifiers;sludge characteristics
公開日期: 1-May-2007
摘要: Sludge blanket clarifiers (SBC) are presently an important unit of the water treatment process in Taiwan. Most studies concerning SBC have revolved around the treatment efficiency on turbidities. In Taiwan most of the raw water sources for water treatment plants are contaminated with organic substances, which often interfere with the operation Of SBC. in this study, the effects of organic materials on the formation of the sludge blanket and its were examined. Humic acid and salicylic acid were added in water to simulate natural waters polluted with organic materials of high and low molecular weights. The addition of humic acid accelerated the formation of a stable sludge blanket, however, the sludge blanket so formed contained less solid. Opposite effects were discovered with salicylic acid. Nevertheless, both organics enhanced the efficiency of turbidity removal by SBC. Large organic molecules were easily removed by SBC. Coagulant addition had no significant effect on turbidity removal although the formation time for a sludge blanket was shortened. To successfully operate SBC, the occurrence and types of organic materials must be monitored.
URI: http://dx.doi.org/10.2166/aqua.2007.102
http://hdl.handle.net/11536/10824
ISSN: 0003-7214
DOI: 10.2166/aqua.2007.102
期刊: JOURNAL OF WATER SUPPLY RESEARCH AND TECHNOLOGY-AQUA
Volume: 56
Issue: 3
起始頁: 163
結束頁: 169
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