Effects of Organic Matters on Floc Characteristics and Sludge Blanket Stability

• Main Authors: Sung, Shang-Shiuan, 宋尚軒
• Other Authors: D. J. Lee
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/83143712507669366353

碩士 === 國立臺灣大學 === 化學工程學研究所 === 90 === 　　This thesis studied the settibility of flocs and stability of the sludge blanket, using the highly turbid storm water by tropical storm Nari and synthetic raw water as samples. The resulting flocs size and compactness were monitored using small angle light scattering technique. Experimental design technique was adopted to study the effects of pH, turbidity, and alkalinity of suspension, the PACl dosage, and the dosed amount of humic acid on the supernatant quality. 　　Experimental results revealed that the loose floc is preferable to gravity settling applications. PACl dose and the pH values are the most influential factors on turbidity and humic acid removal after particle coagulation. Meanwhile, the blanket stability is strongly correlated with the humic acid/clay ratio and the floc strength, but is little affected by the floc size and its structural compactness.