尽管用化学方法沉淀小球藻必然会被淘汰,目前还是用得比較广泛的一种方法,尤其是用明矾作沉淀剂。我們虽曾企图用物理方法达到沉淀小球藻的目的,如用超声波,自然沉淀等方法,結果都不滿意,不得不藉助于明矾进行采收。在实际运用中发現粗明矾含有較多的杂 Although the chemical precipitation of chlorella will inevitably be eliminated, is still a more widely used method, especially with alum as a precipitating agent. Although we have attempted to use the physical methods to achieve the purpose of sedimentation Chlorella, such as using ultrasound, natural precipitation and other methods, the results are not satisfied, had to resort to alum for harvesting. In practice, crude alum found more impurities