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生态聚磷石对低浓度景观水的除磷研究 被引量:2

Study of Calcium Silicate Hydrates to Enhance Phosphorus Removal from Landscape Water
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摘要 研究了新型填料水化硅酸钙对景观水中低浓度磷的去除效果。考察了反应时间、初始磷浓度、投加量对除磷率的影响,同时采用以水化硅酸钙为填料的滤床,研究其实际低浓度景观水中磷去除效果。结果表明,初始磷浓度为0.3mg/L的低浓度模拟水,在投加量为1500mg/L、反应时间为24h时,水化硅酸钙对模拟水中除磷率达到60%以上,针对浓度为0.50mg/L的实际景观水,投加量为800mg/L时,除磷率达到65.0%;动态试验中,水力停留时间为60min、初始磷浓度为0.15~0.3mg/L,运行8d后,过滤床除磷率保持在44%以上。 The objective ,of the study is to test the phosphorus-removing property of calcium silicate hydrates, a new material potentially suitable for the filter bed as a substrate used in subsurface flow constructed wetlands which are applied to the purification of landscape water and eutrophication control of lakes and reservoirs.
出处 《环境科学与技术》 CAS CSCD 北大核心 2008年第6期44-46,134,共4页 Environmental Science & Technology
关键词 水化硅酸钙 晶析 景观水 calcium silicate hydrates phosphorus crystallization landscape water
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