人工水草技术在波罗江农田排水硬化沟渠中的应用  

Application of Artificial Plants in Farmland Drainage Ditches of Boluo River

作　　者：滕庆晓 庞燕[1] 胡小贞[1] 王涌涛[2] 黄天寅[2] 

机构地区：[1]中国环境科学研究院湖泊生态环境创新基地,北京100012 [2]苏州科技学院环境科学与工程学院,江苏苏州215009

出　　处：《环境工程技术学报》2016年第1期65-71,共7页Journal of Environmental Engineering Technology

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07105-003-03)

摘　　要：针对农田排水沟渠硬化,缺乏天然净化能力的问题,根据生态截污沟渠原理,采用人工水草技术进行大理市波罗江农田排水水质的原位净化研究。结果表明：人工水草对农田排水具有良好和稳定的净化效果,当沟渠进水COD_（Mn）为3.8~7.3mg/L,TN、TP和NH_3-N浓度分别为1.18~2.65、0.05~0.19和0.45~0.83 mg/L,水力停留时间（HRT）为2.1~2.5 h时,经人工水草处理后,农田排水COD_（Mn）、TN、TP和NH_3-N的去除率分别达到10.86%~40.35%、13.04%~60.52%、15.65%~48.68%和13.59%~55.13%。Aiming at the problem of the drainage ditches hardening and lacking natural purification ability,the technique of artificial plants was put forward as a solution based on the ecological sewage ditch principles. In-situ artificial plant experiment was carried out to purify the agriculture drainage in drainage ditches of the Boluo River of Dali. The results showed that the artificial aquatic plants have feasible and stable purification ability for agriculture drainage. When the COD_（Mn）,TN,TP and NH_3-N of the agriculture drainage were 3. 8-7. 3 mgL,1. 18-2. 65mg/L,0. 05-0. 19 mg/L,0. 45-0. 83 mg/L,respectively,with hydraulic retention time of 2. 1-2. 5 h,and after the treatment of artificial grass carpet,the removal rates of COD_（Mn）,TN,TP and NH_3-N in farmland drainage ditches were 10. 86%-40. 35%,13. 04%-60. 52%,15. 65%-48. 68% and 13. 59%-55. 13%,respectively.

关 键 词：农田排水沟渠 人工水草 原位净化 波罗江 

分 类 号：X522[环境科学与工程—环境工程]