Study on non-chemical control of water bloom in eutrophic lakes with ozone application

在日本夏季，湖泊中经常出现由蓝藻、滩涂蓝藻组成的水华。这些浮游植物在光照充足、温度充足、湖泊富营养化等条件下有较大的繁殖能力。水华现象对湖泊的水质和环境造成了一定的破坏，如水体污染、水体异味等。为了抑制或消灭低水平的蓝藻种群，我们尝试在滩涂浮游植物中通过水进行臭氧鼓泡。蓝藻细胞表面膜被臭氧强烈的氧化作用破坏。在臭氧鼓泡后的一个半小时内，蓝藻的数量减少。

Water blooms which consist of blue-green algae, Cyanobacteria of limnoplankton are often observed in lakes in summer season in Japan. Those photo plankton have big propagation under the condition of plenty of insolation, enough temperature, eutrophication in lakes and so on. The phenomenon of water bloom gives some damage to water quality and environment in the lake like as water polution and smelling water. To suppress or exterminate Cyanobacteria population in low level, we tried to applicate ozone bubbling through water within limnoplankton. Cyanobacteria cell surface membrane was broken down by strong oxidative effect of ozone. The Cyanobacteria decreased harf in population in a harf hour after ozone bubbling.