Abstract:In order to discuss spatial and temporal distributions of blue-green algae in limnetic water with optical depth and vertical mixing, laboratory and field experiments of air circulation process were conducted, focusing on two key parameters: Emix:Eu – ratio of mixing depth and euphoric zoon depth, and Vmix - vertical mixing rate. Dynamic equilibrium of algal vertical distribution appeared beyond 20h. Within 2h, algal bloom cannot develop at water surface with Vmix31.08 cm/min; while the same situation could last for above 20h with Vmix31.35 cm/min. Coefficient of variation (CV) was introduced to depict algal vertical dispersion, and 3-order magnitude differences of CV were classified. K - the rate constant of algal decay hold positive correlation with Emix:Eu (R2=0.85), indicating that Emix:Eu was contributive to precipitating algal decline. Besides, field experiment showed that algal bloom disappeared as Emix:Eu33.
张小璐, 何圣兵, 陈雪初, 杨峰峰, 戴鼎立, 孔海南. 扬水造流技术控藻机制研究[J]. 中国环境科学, 2011, 31(12): 2058-2064.
ZHANG Xiao-Lu, HE Sheng-Bing, CHEN Xue-Chu, YANG Feng-Feng, DAI Ding-Li, KONG Hai-南. Studies on algal control mechanism of air circulation technology.. CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(12): 2058-2064.