TY - GEN
T1 - The effect of polyacrylamide on floc structure of typical systems
AU - Jin, Pengkang
AU - Feng, Yongning
AU - Xu, Jie
AU - Wang, Xianbao
PY - 2013
Y1 - 2013
N2 - Based on that floc structure is an important factor that influencing the coagulation effect and the post-treatment load, the effect of PAM on floc structure of typical system is analyzed and evaluated in this paper. The results show that PAM has a notable influence on floc morphological structure characteristics. For inorganic turbid system, the fractal dimension and diameter of kaolin flocs adding PAM are bigger than that formed by adding aluminum sulfate merely, and the shear-resistant ability of flocs is stronger. With regard to dissolved organic system, adding PAM under two typical pH conditions, the floc morphological characteristic has the same variation with that in inorganic turbid system. PAM could improve the floc morphological structure. However, the improving effect will be relatively weaker under slightly acidic condition, which indicates that the chemical effect of PAM is restrained under this condition. While for the coexisting system, PAM shows an obvious improvement on floc structure under two pH conditions, the floc is compact, bigger and with a higher strength. The chemical effect of PAM is not restrained under slightly acidic condition, which may owe to the interaction between PAM and inorganic suspended materials and dissolved organics in coexisting system.
AB - Based on that floc structure is an important factor that influencing the coagulation effect and the post-treatment load, the effect of PAM on floc structure of typical system is analyzed and evaluated in this paper. The results show that PAM has a notable influence on floc morphological structure characteristics. For inorganic turbid system, the fractal dimension and diameter of kaolin flocs adding PAM are bigger than that formed by adding aluminum sulfate merely, and the shear-resistant ability of flocs is stronger. With regard to dissolved organic system, adding PAM under two typical pH conditions, the floc morphological characteristic has the same variation with that in inorganic turbid system. PAM could improve the floc morphological structure. However, the improving effect will be relatively weaker under slightly acidic condition, which indicates that the chemical effect of PAM is restrained under this condition. While for the coexisting system, PAM shows an obvious improvement on floc structure under two pH conditions, the floc is compact, bigger and with a higher strength. The chemical effect of PAM is not restrained under slightly acidic condition, which may owe to the interaction between PAM and inorganic suspended materials and dissolved organics in coexisting system.
KW - Flocs
KW - Morphological structure
KW - PAM
KW - Typical system
UR - https://www.scopus.com/pages/publications/84872930302
U2 - 10.4028/www.scientific.net/AMM.260-261.887
DO - 10.4028/www.scientific.net/AMM.260-261.887
M3 - 会议稿件
AN - SCOPUS:84872930302
SN - 9783037855683
T3 - Applied Mechanics and Materials
SP - 887
EP - 890
BT - Energy, Environment and Sustainable Development
T2 - 2012 Asian Pacific Conference on Energy, Environment and Sustainable Development, APEESD 2012
Y2 - 12 November 2012 through 13 November 2012
ER -