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Screening for Bio-flocculants Microorganisms and Its Performance for Turbidity Removal

YIN Hua,PENG Hui,JIA Zong jian,LIANG Yu qiang,LIU Hui xuan (College of Life Science and Technology,Jinan University,Guangzhou 510632)  
flocculant producing strains which had higher turbidity removal ability were obtained by enriching and screening the strains in activated sludge from a wastewater treatment plant.The major factors which influence the flocculation of the flocculant producing strain GS7,the highest in flocculation efficiency among the 10 strains,were studied.The results showed that the optimum conditions for GS7 growth were pH 6,growth time 18h and temperature 30℃ with the best performance at pH 8 of wastewater.The addition of small amount of two valence metallic ion Ca 2+ in wastewater could increase the flocculation ability of GS7 obviously.The turbidity removal ratio of GS7 amounted to 93.5% when dealing with such real wastewater sample as municipal stream wastewater.
【Fund】: 广东省自然科学基金! (980 897);; 国务院侨办重点学科基金 !(939711)资助
【CateGory Index】: X703.5
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