基于射流泵式空化发生器的水华藻类的灭杀机理研究

The control and degradation of algal bloom is one of the key technologies in preventing and treating water pollution. Based on multi-disciplinary integration, the present application proposes a new algal removal technology with the hydrodynamic cavitation by a jet pump cavitation reactor. Combining with large eddy simulation, bubble dynamics, algal cell morphology and biochemical index analysis, the present research will mainly focus on: 1) the evolution of the complex cavitating flow and main features of the bubble collapse in the jet pump cavitation reactor; 2) the damage mechanism of algal cells with the effects of treatment time and cavitation stages. The following results can be got: 1) the temperal characteristics of the cavity cloud variations and the mechanism of bubble collapse; 2) the microscopic mechanism of algal removal by the cavitation with jet pump cavitation reactor; 3) the relationship between algal removal effects and the macroscopic parameters of the jet pump cavitation reactor as well as the effects of cavitation in removing the possible toxin produced from the algal cell disruption; 4) the design rules of jet pump cavitation reactor for algal removal with taking into account the energy consumption, algal removal efficiency and the toxin removal effects. The present research can enrich the fundamental theory of ecological hydraulic engineering and be expected to be applied into the water pollution control directly.

治理藻类水华是防治水体污染的关键技术之一。本申请在多学科交叉融合的基础上，提出一种基于射流泵式空化发生器的水力空化灭杀藻类的新技术。本申请将采用大涡模拟、空泡动力学理论、藻细胞形态与生化指标分析，重点研究：1）射流泵式空化发生器内部复杂空化流动以及空泡溃灭的规律；2）不同空化状态和处理时间下藻类细胞的破坏机理。预期成果：1）获取空化云的时空演变特性和空泡溃灭的力学参数分布规律；2）揭示射流泵式空化发生器内空化灭杀藻类的微观机理；3）构建射流泵式空化发生器宏观参数与杀藻效果的内在关联性，评价空化对藻类细胞破坏后可能产生的毒素的去除效果；4）提出综合考虑能耗、除藻率、藻毒素去除效果的射流泵式空化发生器的设计准则。研究成果可完善我国生态水利的基础理论，并有望直接应用于我国水体污染防治工程中。

治理藻类水华是防治水体污染的关键技术之一。本申请在多学科交叉融合的基础上，提出.一种基于射流泵式空化发生器的水力空化灭杀藻类的新技术。本申请将采用大涡模拟、空泡动.力学理论、藻细胞形态与生化指标分析，重点研究：1）射流泵式空化发生器内部复杂空化流.动以及空泡溃灭的规律；2）不同空化状态和处理时间下藻类细胞的破坏机理。预期成果：1）.获取空化云的时空演变特性和空泡溃灭的力学参数分布规律；2）揭示射流泵式空化发生器内.空化灭杀藻类的微观机理；3）构建射流泵式空化发生器宏观参数与杀藻效果的内在关联性，.评价空化对藻类细胞破坏后可能产生的毒素的去除效果；4）提出综合考虑能耗、除藻率、藻.毒素去除效果的射流泵式空化发生器的设计准则。研究成果可完善我国生态水利的基础理论，.并有望直接应用于我国水体污染防治工程中。