巴天酸模和北水苦荬净化生活污水

Experimental Research of Rumex patientia linn and Veronica Anagallis-aquatica L Purifying Domestic Sewage

构建了小型污水净化系统,以巴天酸模和北水苦荬2种本地野生植物为研究对象,研究其在不同水培时间下对生活污水的净化效果,并对污染物在水体和植物之间的迁移转化过程进行分析。结果表明,经过21 d的实验,对照组、巴天酸模组和北水苦荬组对生活污水中COD去除率分别为67.9%、89.3%、86.2%;NH_3-N去除率分别为79.4%、96.0%、91.1%,TN去除率分别为74.1%、93.0%、88.7%,TP去除率分别为63.6%、91.7%、87.1%。植物吸收和微生物及其它作用是系统中氮磷去除的主要途径。

By structuring a small sewage purification system, using Rumex patientia linn and Veronica anagallis-aquatica L these two kinds of native wild plants as research objects, to test their purification effect on domestic sewage at different times, and analyze the progress of migration and conversion between water and plants. After 21 d, the experimental study shows that： the blank control group, Rumex patientia linn group and Veronica anagallis- oquatica L group＇s removal efficiency of COD are 67.9%, 89.3% and 86.2%, respectively; The removal rates of NH3-N are 79.4%, 96.0% and 91.1% respectively; The removal rates of TN are 74.1%, 93.0% and 88.7%, respectively; The removal rate of TP are 63.6%,91.7% and 87.1%, respectively. Plant absorption, microbial and other functions are the main ways to remove nitrogen and phosphorus in the system.