Abstract
With the increasing of water pollution, water eutrophication is seriously affecting people’s daily life and production. Therefore, it is particularly important to explore safe and efficient algae control technology. In the current algal bloom treatment methods, the physical method is not complete in algae dissolving, and the cost of algal control is high. The chemical method is easy to produce secondary pollution and toxic by-products, and the safety is not high. However, the biological method has the advantages of low cost, high ecological security and good ecological compatibility. It is considered to be a more promising method to remove algae and biological toxins, and it is also an inevitable trend to control water eutrophication in the future.
Highlights
White rot fungus can degrade water pollutants that other microorganisms can't or are difficult to degrade, especially some pollutants with aromatic ring structure and greater toxicity, and has a strong effect on algae removal and algal toxin reduction
In this paper, we take scenedesmus quadricauda as the research object, use immobilized white rot fungi to control algae, adopt response surface experimental design to optimize the algae dissolving conditions of white rot fungus control system, and make a profound study the changes of the physiological characteristics of algae dissolving, which has important application value to promote the application of this new microbial algae control technology in the treatment of actual water eutrophication
By observing the changes of biofacies on the surface of biological carbon fiber, it was found that biomembrane appeared on the surface of filler on the second day, white rot fungi grew well on the third day, chlorophyll a in on the fifth day, indicating that the process of membrane-hanging and acclimation had been completed, and the system had entered a running state. water samples decreased significantly on the fourth day, and chlorophyll a in water samples entered a stable state
Summary
White rot fungus can degrade water pollutants that other microorganisms can't or are difficult to degrade, especially some pollutants with aromatic ring structure and greater toxicity, and has a strong effect on algae removal and algal toxin reduction. In this paper, we take scenedesmus quadricauda as the research object, use immobilized white rot fungi to control algae, adopt response surface experimental design to optimize the algae dissolving conditions of white rot fungus control system, and make a profound study the changes of the physiological characteristics of algae dissolving, which has important application value to promote the application of this new microbial algae control technology in the treatment of actual water eutrophication. The experimental device for controlling algae by white rot fungus is made of organic glass. The constant temperature heater is used to control the temperature of the reactor to 25 ~ 35°C, and the sequential batch operation mode of "water inlet - reaction - drainage" is adopted.
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