摘要
为考察乡土植物对当地生活污水的净化效果,探究乡土植物替代外来引种植物应用于水体修复的可能性,选取聚花草(Floscopa scandens)、疏穗莎草(Cyperus distans)、线叶水芹(Oenanthe linearis)、石龙芮(Ranunculus sceleratus)和鱼腥草(Houttuynia cordata)5种广东省乡土植物,以不同浓度梯度的自配溶液模拟生活污水,分析几种植物对化学需氧量(COD)、总氮(TN)、氨氮(NH4+-N)和总磷(TP)的去除效果。结果表明,5种乡土植物对生活污水均具有明显的净化效果,且各植物之间净化效果差异显著。疏穗莎草处理生活污水的效果最好,高浓度污水处理下,对COD、TN、 NH4+-N和TP的去除率分别为89.56%、82.66%、88.89%和83.32%(20 d);鱼腥草对TN和NH4+-N的去除效果明显,各浓度污水处理下,其对TN的去除率为83.52%~85.50%, NH4+-N的去除率为77.40%~89.33%,但对磷元素的净化效果较差,适合治理高氮低磷污染类型;聚花草对TP的去除效果明显,不同浓度梯度污水处理下,其去除率最高可达91.43%,建议应用于低氮高磷的生活污水治理。
In order to determine the purification effect of domestic wastewater by indigenous plants and investigate the possibility of substituting indigenous plants for exotic species in water remediation,in this study,five indigenous plants,including Floscopa scandens,Cyperus distans,Oenanthe linearis,Ranunculus sceleratus and Houttuynia cordata,were selected to investigate the removal effects of chemical oxygen demand(COD),total nitrogen(TN),ammonia nitrogen(N H+4-N)and total phosphorus(TP)in synthetic municipal wastewater.The results showed that all the selected five indigenous plants had an obvious performance on COD,TN,TP,and NH4+-N removal from synthetic municipal wastewater,and significant differences occurred in their purification efficiencies.Cyperus distans showed the best treatment results for high concentration wastewater,and the removal rates of COD,TN,NH4+-N and TP were 89.56%,82.66%,88.89%and 83.32%after 20 d treatment.Houttuynia cordata presented the remarkable removal rates of TN and NH4+-N,which were83.52%%~85.50%%and 77.40%~89.33%for wastewater with different concentration gradients,respectively.However,Houttuynia cordata had poor purification effect on phosphorus,and might be suitable for polluted water treatment with high nitrogen and low phosphorus.Floscopa scandens had good TP removal effect with the highest removal rate of 91.43%in three kinds of wastewater.The result suggests that Floscopa scandens may be suitable for treatment of municipal wastewater with low nitrogen and high phosphorus concentrations.
作者
谢东升
朱文逸
陈劲鹏
袁晓初
徐蕾
王发国
XIE Dongsheng;ZHU Wenyi;CHEN Jinpeng;YUAN Xiaochu;XU Lei;WANG Faguo(Guangdong Provincial Key Laboratory of Applied Botany,South China Botanical Garden,Chinese Academy of Sciences,Guangzhou 510650,China;College of Horticulture and Landscape Architecture,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China;College of Natural Resource and Environment,South China Agricultural University,Guangzhou 510642,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《环境工程学报》
CAS
CSCD
北大核心
2019年第8期1903-1908,共6页
Chinese Journal of Environmental Engineering
基金
广东省自然科学基金资助项目(2015A030308015)
中国科学院大学生创新实践训练计划
广东省省级科技计划项目(2015A020220011)
中科院A类战略性先导科技专项(XDA13020500)
关键词
植物修复技术
生活污水净化
水体修复
phytoremediation technology
municipal wastewater purification
water remediation
