千屈菜在富营养化水体中生长及磷去除效果试验初报

Study on Growth and Phosphorous Removal effect of Lythrum salicaria in Eutrophia Water

研究了千屈菜在不同TP(Total Phosphorous)浓度的模拟富营养化水体中的生长情况和净化作用.结果表明,千屈菜在0～0.4mg·L-1的TP浓度范围内均生长良好,对水体中的TP的去除效果非常显著.在试验的30d内,千屈菜对始浓度为0.4mg·L-1的模拟富营养化水体中磷的去除率高达98%以上,其去除速率均明显高于对照凤眼莲.在最初10d内,千屈菜具有'快速'吸收的净化特性,水体中TP浓度呈直线下降,而且它的磷去除率与水体TP浓度呈正相关.

Study on growth and phosphorous removal of Lythrum salicaria in different levels of TP of eutrophia water resulted that it grew well and good phosphorous removal effect in 0 ~ 0.4mg·L-1. During the 30 days experimental period, the highest removal percentage of TP in eutrophia water(TP=0.4 mg·L-1) reached more than 98%, which was higher than the control(Eichhornia crassipes). In the first 10 days, Lythrum salicaria had the characteristics of quick reduction of TP.Within the range of TP concentrations(0.05 mg·L-1 to 0.4 mg·L-1),the removal percentage to TP positively correlated to TP concentrations.