挑选了4种水生植物：凤眼莲（Eichhornia crassipes）、大薸（Pistia stratiotes）、鸭跖草（Commelina communis）和黄花水龙（Ludwigiapeploides（Kunth）Kavensubsp ．stipulacea（Ohwi）Raven），在冬季进行生活污水处理的研究。实验结果表明：在广西地区气温较低的一周，4种植物仍然具有一定的去污能力，在处理的第2d ，各植物对CODCr的去除率均达到20％左右；在处理的第3d ，各植物对废水的pH值可控制在6．5以上，同时各植物对T P的去除率均达到35％以上，其中凤眼莲达到52．07％；各植物对 T N和N H3－N的去除率则是随着时间的增加而提高，7d后，黄花水龙对 T N的去除率达最大为42．64％，对N H3－N的去除率最大为50．91％。%Artificial wetland is a newly developed system to deal with wastewater treatment .The article se‐lects four kinds of aquatic plant to study the treatment of domestic sewage in winter ,including Eichhornia crassipes ,Pistia stratiotes ,Commelina communis ,Ludwigia peploides (Kunth ) Kaven subsp .stipulacea (Ohwi) Raven .The results indicate that during one week of low temperature in Guangxi ,the four kind of plants still have a certain dirt -removing power ;in the 2nd day of treatment ,the removal rate of CODcr is a‐round 20% ;in the 3rd day of treatment ,the plants'control of pH of waste water can reach above 6 .5 and TP removal rates are up more than 35% ,in w hich the removal rate of TP by Eichhornia crassipes is 52 .07% ;the removal rate of TN and NH3-N by all plants increases with time .After 7 days ,the removal rate of TN and NH3-N by Ludwigia peploides is up to 42 .64% and 50 .91% respectively .
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