摘要
在营养液膜技术基础上构建以盘培多花黑麦草为主要内容的模拟生态沟渠系统,来降解杭嘉湖区域一水稻田沟渠中的农业面源污染物。观测了废水中各污染物在经模拟生态沟渠运行后的降解效果。结果表明:以盘培多花黑麦草为主要内容的模拟生态沟渠对农业面源污染物具有明显的降解效果。农田面源污染物进入模拟生态沟渠系统,经运行36 d后,TN降解幅度为70%,NH4+-N降解幅度达72.1%,NO3--N降解幅度为75%,TP降解幅度达71.6%。并且在开始18 d内降解速度较快,后18 d降解速度相对较慢。
Based on the nutrient film technique,we have built up simulative ecological ditch system to degradate the agricultural non-point pollution,which was mainly composed of Lolium multiflorum strips.The results showed that the simulative ecological ditch system had obvious degradation effect on agricultural non-point pollution,and after 36 days' running,the removal rate of TN,NH4+-N,NO3——N and TP was 70%,72.1%,75.0% and 71.6 % respectively.In the earlier period of system running,the above-mentioned water quality parameters decreased greatly,while in the later period of system running,the water quality parameters decreased slowly.
出处
《江西农业学报》
CAS
2010年第9期143-145,151,共4页
Acta Agriculturae Jiangxi
基金
浙江省水利厅科技专项资助项目(RCO910)
