[ Objective] The study aimed to explore the approaches of utilizing Nymphaea tetragona Georgi by doing research on removing nitrogen and phosphorus from sewage using N. tetragona Georgi. [Method] With N. tetragona Geo...[ Objective] The study aimed to explore the approaches of utilizing Nymphaea tetragona Georgi by doing research on removing nitrogen and phosphorus from sewage using N. tetragona Georgi. [Method] With N. tetragona Georgi as the research object, a comparative analysis on the content of total nitrogen （TN） and total phosphorus （TP） was carded out after N. tetragona Georgi was planted in sewage. TN content was deter- mined by alkaline potassium persulfate digestion -UV spectrophotometric method （GB11894 -89）, and TP content was measured by using ammo- nium molybdate spectrophotometric method （GBl1893 -89）. [ Result] The removal rate of TN and TP reached 12.31% and 8.64% respectively under natural conditions after N. tetragona Georgi was cultivate in the sewage for 13 days. Afterward, the removal rate has no significant change. [ Conclusion] N. tetragona Georgi can purify sewage to some degree, and the removal efficiency of TN was higher than that of TP.展开更多
文摘[ Objective] The study aimed to explore the approaches of utilizing Nymphaea tetragona Georgi by doing research on removing nitrogen and phosphorus from sewage using N. tetragona Georgi. [Method] With N. tetragona Georgi as the research object, a comparative analysis on the content of total nitrogen （TN） and total phosphorus （TP） was carded out after N. tetragona Georgi was planted in sewage. TN content was deter- mined by alkaline potassium persulfate digestion -UV spectrophotometric method （GB11894 -89）, and TP content was measured by using ammo- nium molybdate spectrophotometric method （GBl1893 -89）. [ Result] The removal rate of TN and TP reached 12.31% and 8.64% respectively under natural conditions after N. tetragona Georgi was cultivate in the sewage for 13 days. Afterward, the removal rate has no significant change. [ Conclusion] N. tetragona Georgi can purify sewage to some degree, and the removal efficiency of TN was higher than that of TP.
