Ann: Major Chinese Lake Project, page-172

hi all

bit more reading, could post the link but you can google phoslock past week and should come up under www.yninfo.cn

How to solve the problem of eutrophication in the lake? Chinese and foreign experts recommend controlling phosphorus concentration in lakes [copy link]AdminAdminGroupadministratorbirthdayPost942Points11142GendersecrecyRegistration time2014-10-311 #font size: Published on 2019-06-25 09:26 | only see the landlordSource: China Environmental News 　　reporter Jiang Zhaohui 　　Recently, the Yunnan Provincial Environmental Science Society, the Provincial Environmental Science Research Institute and other units jointly organized the Lake Library eutrophication and phosphorus pollution control seminar held in Kunming. 　　Many famous lake experts from China, Australia and International Water Association (IWA) gathered to discuss the development history, current situation, technical practice and research results of lake eutrophication and phosphorus pollution control, and share the lake bank at home and abroad. To manage advanced experience, and to explore solutions to the current situation and problems faced by China's lake management. 　　At the seminar, experts focused on the theme of eutrophication and phosphorus pollution control in lakes, combined with actual cases at home and abroad, focusing on the eutrophication and phosphorus pollution control of lakes in China, the challenges, research and technology of water pollution control, Yunnan Nine The status quo, challenges and strategies of plateau lake protection and management, the theory and practice of basin water management intelligentization, phosphorus control-led water body repair, lake phosphorus control sediment pollution control technology, lake reservoir sediment endogenous phosphorus pollution and control technology, Exchanges and discussions on aspects of the ecological environmental protection strategy of the Yangtze River Economic Belt . 　　Dr. David Garman, former President of the International Water Association (IWA), spoke in an exchange speech: “No technology can achieve all of the goals in reservoir and lake management. In a variety of options, in situ Remediation is still a priority, and there have been more than 300 successful applications such as Labracon Lake in the Netherlands, Lake Belendorf, Germany, Lake Pampulha, Brazil, and Gordapu Lake, Poland. Among them, PHOSLOCK is a phosphorus-locking agent. A product that has been applied in the control of phosphorus pollution in the lake. The current application case shows that it basically meets the 'ideal' standard of safety, effectiveness and long duration. The next step is to further verify by improving the monitoring method and model simulation. ""　　Wang Shengrui, a researcher at the Water Science Research Institute of Beijing Normal University, believes that the rapid deterioration of water quality in China's lakes has eased in recent years, and some waters have improved in water quality. Although total phosphorus is somewhat controlled, the structure of the phosphorus source changes significantly. In the control strategy of nitrogen and phosphorus release from sediments in plateau lakes, studying its release characteristics and proposing control measures are important issues to be solved in lake governance. For example, the sediment dredging project should reduce the endogenous nitrogen and phosphorus in sediments, and it is necessary to cooperate with ecological restoration measures to strengthen the theory and technology of sediment interface control based on the nitrogen-phosphorus sediment-water interface process. Engineering materials—aquatic plants—microbial remediation sediment technology; using new engineering materials to solve problems of low concentration exceeding the standard and cross-section compliance of reservoirs and water sources. 　　Yu Yanhong, a professor-level senior engineer at the Yunnan Academy of Environmental Sciences, believes that the protection and treatment of highland lakes in Yunnan Province, which focuses on Dianchi Lake, faces many new challenges. Different strategies should be adopted for lakes with good water quality, lakes with good water quality, and polluted lakes. For example, Dianchi Lake and Yilong Lake belong to polluted lakes, and accurate pollution control must be implemented . The key to accurate pollution control is global priority. In the practice of precise pollution control and water quality compliance in Yilong Lake, the perspective of watershed pollution control will be changed from the project's own efficiency to the lake water quality improvement effect. By optimizing the technical ideas, the decision-making “trilogy” will be played (basic investigation and pollutant accounting). Large-scale three-dimensional water quality hydrodynamic model and source analysis technology, water body compliance plan), grasp the key technology application, and carry out simulation optimization analysis of key pollution control projects. 　　Yaan Andrew Winks, director of global operations of PHOSLOCK in Australia, believes that in order to solve the problem of eutrophication of water bodies, a water eutrophication prevention and control technology system based on phosphorus control should be established. PHOSLOCK® water deep dephosphorization technology originated in Australia, invented in 1997, has been applied to more than 20 countries and regions around the world. The application of this technology requires a mathematical model of large-scale water body precision phosphorus reduction technology and a water-stable steady-state construction technology of in-situ passivation of contaminated sediment, which is highly efficient, stable, safe and unique. For example, Hyde Park in London, England, before the 2012 Olympic Games and in March 2019, showed that phosphorus nutrition was greatly reduced, no cyanobacteria broke out, water was clear, and submerged vegetation was restored.　　Zhou Wei, a former researcher of the Three Gorges Office of the State Council, discussed the “Eco-environmental Protection Strategy of the Yangtze River Economic Belt”. It comprehensively analyzes the background, protection basis, response problems and protection strategies of the problem, and targets lakes, rivers, reservoirs and drinking water sources. The pressure of total phosphorus control is faced with thinking about how to remove phosphorus. He proposed to focus on the total phosphorus pollutants in the Yangtze River protection, with the aim of achieving water quality compliance and non-degradation, and to study phosphorus pollution control with the comprehensive regulation mode of water pollution under the background of the operation of the Three Gorges Reservoir. 　　Since the "Eleventh Five-Year Plan", China's lake phosphorus pollution control has achieved certain results, but the phosphorus source structure has undergone new changes, and phosphorus pollution control faces many practical problems. In promoting the protection and protection of lakes, we must adapt to local conditions, one lake and one policy, learn from domestic and foreign successful experiences, make full use of advanced technology at home and abroad, scientifically control the concentration of phosphorus in lakes, truly achieve accurate pollution control, and ensure the eutrophication of lakes. The problem has been solved effectively.