Abstract:Self-forming dynamic membrane (SFDM) was used to separate the high-concentration redusidal sludge (belong to non-newtonian fluid) with fermented for the production of volatile fatty acids (VFAs). The efficiencies of the retaining of substrates and selective transmission of the produced VFAs by SFDM were investigated. Characteristics of SFDM resistance and composition of the pollution layer were analyzed. Results indicated the suspend solid (SS) concentration in effluent of SFDM could be remained below 1.5g /L after operated for 3days, and the retention rates of polysaccharide and protein could reach about 40% and 75%, respectively. After operated for 5days, nutrients with large molecular could be retained and the retention rate of SCOD could stable at 45%. Moreover, the productd VFAs could be selectively discharged timely and the retention rate of VFAs were just about 3%. Resistance of SFDM was mainly from membrane surface, and the pollutants are primarily extracellular protein.
马惠君, 黄帅, 刘和, 陈兴春, 刘宏波, 白杰. 自生动态膜分离厌氧产酸污泥效果与特征研究[J]. 中国环境科学, 2015, 35(6): 1780-1785.
MA Hui-Jun, HUANG Shuai, LIU He, CHEN Xing-Chun, LIU Hong-Bo, BAI Jie. Efficiencies and characteristics of self-forming dynamic membrane in separating fermented sludge for acid production. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(6): 1780-1785.