Flocculation of two different fresh-water green microalgae, Chlorella vulgaris and Dictyosphaerium sp., was explored using chitosan, FeCl₃ and NaOH as flocculants. The most optimal dosage of each flocculant under certain pH was determined. Both chitosan and FeCl₃ gave a higher flocculation efficiency then flocculation induced by pH increase. Flocculation induced by chitosan could be achieved with lower dosage. The optimal dosages of chitosan for Chlorella vulgaris and Dictyosphaerium sp. were 10 mg/L and 5 mg/L, respectively. Furthermore, the synergy between membrane filtration and flocculation was investigated and showed a higher membrane filtration performance and harvesting efficiency compared with the filtration without flocculation in both dead-end filtration and filtration with vibration. The filtration under sub-optimal flocculation conditions also showed significant potential. Introducing such flocculation into the membrane filtration process prominently reduced both energy input and required membrane area.

两种不同的淡水绿微藻絮凝，小球藻和Dictyosphaerium属，壳聚糖，的FeCl进行了探讨₃和NaOH作为絮凝剂。确定了在一定pH下每种絮凝剂的最佳剂量。壳聚糖和FeCl ₃的絮凝效率均高于pH升高引起的絮凝。壳聚糖诱导的絮凝可以以较低的剂量实现。壳聚糖的最佳剂量的小球藻和Dictyosphaeriumsp。分别为10 mg / L和5 mg / L。此外，对膜过滤和絮凝之间的协同作用进行了研究，结果显示，与无絮凝的过滤相比，无端过滤和振动过滤均具有更高的膜过滤性能和收获效率。在次优絮凝条件下的过滤也显示出很大的潜力。将这种絮凝引入到膜过滤过程中，显着减少了能量输入和所需的膜面积。