Algal biofilm,equipped with polyethylene carriers was cultivated by attaching Scenedesmus obliquus and Anabaena flos-aquae,respectively. Algal biofilm growth status and the treatment efficiency on nitrogen and phosphorus were detected at room temperature of 25 ℃,and 4 000 lx continuous illumination,in order to investigate the influence of p H value. Results showed p H at 9 was the optimal value for algal biofilm. When the p H value was controlled at 8 and 9,the highest production of EPS were achieved at 48....
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