The influence of influent nitrate on phosphorus removal efficiency of phosphate reduction systems under anoxic and aerobic condition was studied by changing the concentration of influent nitrate.
通过改变进水硝酸盐浓度，考察了硝酸盐对缺氧和好氧两种不同氧环境下的磷酸盐还原系统除磷效能的影响。
According to the mechanism of biological dephosphorization, the efficiency of removing phosphorus related to content and removal of organic substance.
按照生物除磷的机理，除磷效率的高低与基质中易降解有机物的含量及有机物的去除密切关联。
The removal efficiency of phosphorus in drinking water by modified filter media, especially iron oxide-coated sand has been studied.
试验研究了三类改性滤料及涂铁改性石英砂对饮用水过滤去除微量磷的效果。
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