6 种无机絮凝剂对布朗葡萄藻的絮凝效应

探讨了6种无机絮凝剂对布朗葡萄藻的絮凝效应。采用光密度法测定布朗葡萄藻的生物量，分别研究了硫酸铝、硫酸铝铵、硫酸铝钾、硫酸镁、硫酸铁、氯化铁对布朗葡萄藻的絮凝效应。结果表明，光密度法可应用于布朗葡萄藻生物量的测定，可间接测定絮凝效应，且最佳测定波长为680nm；6种无机絮凝刺的絮凝时间为60min，同时6种无机试剂对布朗葡萄藻均有明显的絮凝效应，硫酸铝、硫酸铝钾、氯化铁对布朗葡萄藻的絮凝效应较硫酸铝铵、硫酸镁、硫酸铁明显（P〈0．05）。硫酸铝浓度控制在1．1g／L，硫酸铝钾浓度控制在0．45g／L以内，氯化铁浓度控制在0．9g／L。

Research of flocculent effects of inorganic reagents on Botryococcus braunii

In the paper, flocculent effects of six kinds of inorganic reagents on Botryococcus braunii. Optical density adopted to determine the biomass of Botryococcus braunii was explored. Effects of aluminum sulfate, ammonium aluminum sulfate, aluminum potassium sulfate, magnesium sulfate, ferric sulfate and ferric chloride on Botryococcu~ braunii were studied. The results showed that the optical density was feasible to determine the biomass of Botryococcus braunii, and optimum wavelength for assay was 680 nm. Flocculent effects of Botryococ- cus braunii treated with six kinds of inorganic reagents were obviously. The flocculent effects of aluminum sulfate, aluminum potassium sulfate, ferric chloride on Botryococcus braunii were more obvious than those of ammonitan aluminum sulfate, magnesium sulfate, ferric sulfate（P 〈 0. 05）. The control concentration of aluminum sulfate was 1.1 g/L, the control concentration of aluminum potassium sulfate was 0. 45 g/L, and the control concentration of ferric chloride was 0. 9 g/L.