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自1995年5月9日—8月29日，每周一次采集了青岛城阳区上马镇对虾养殖池的水样并进行生物鉴定。结果表明，7月4日和7月11日该养殖场的北场3号小池水中浮游植物总量已达到赤潮密度，其优势藻种分别为三角揭指藻（Phaeodactylumtriconutum）、裸甲藻（Gmmnodiniumsp．）（7月4日）和三角褐指藻（Phaeodactylumtriconutum）、新月菱形藻（Nitzchiaclosterium）、裸甲藻（Phaeodactylumtriconutum）及裸藻（Englenasp）（7月11日）。使用改性粘土絮凝样品中的赤潮生物，应用正交试验设计，探讨去除赤潮生物的最佳条件。结果表明，在采用最佳条件进行去除处理时，三角褐指藻、新月菱形藻和裸甲藻的去除率均可达到80％—90%。
From May 9, 1995 to August 29, 1995, the water samples of shrimp culture ponds in Shangma Town, Chengyang District, Qingdao City were collected and bioassayed once a week. The results showed that on July 4 and July 11, the total phytoplankton biomass in Xiaochang No.3 of Xiaoyan had reached the density of red tide. The dominant species were Phaeodactylumtriconutum, Gmmnodinium sp (July 4) and Phaeodactylum triconutum, Nitzchiaclosterium, Phaeodactylumtriconutum, and Englenasp (July 11). Using modified clay to flocculate the red tide organisms in the samples, the optimum conditions for removing the red tide organisms were explored using orthogonal experimental design. The results showed that the removal rates of Phaeodactylum tricornutum, C. marinus and Gymnodinium aurum could all reach 80% -90% under the optimal conditions.