Advanced wastewater treatment by integrated vertical flow constructed wetland with vetiveria zizanioides in north China
The use of tail water for irrigation is becoming increasingly common. However, raw tail water is often contaminated and can cause environmental harm and pose health risks. Nevertheless, it is often used without any significant pre-treatment, a practice mistakenly considered safe. The aim of this study is to explore the removal efficiency of Integrated Vertical Flow Constructed Wetland (IVFCW) with Vetiveria zizanioides, an economically sound, low-tech and easily maintainable treatment system that would allow safe and sustainable use of tail water for landscape irrigation for COD, NH3-N, TN at different hydraulic retention time and different temperature in north China. The IVFCW can remove about 71% of the chemical oxygen demand, 67% of NH3-N and 80% of TN after five days at the hydraulic load of 0.6～0.8m3/m2.d in summer; But at low temperature, all kinds of pollutants has a lower removal efficiency compared with summer. At 10℃, the highest removal ratio of CODCr, NH3-N, TN are only 51.71%, 19.87%, and 29.76%, respectively.
Vetiveria zizanioides Integrated Vertical-flow Constructed Wetland tail water treatment
Wang Xiao Han Bao-ping Shi Ying-zheng Pang Zong-qiang
Jiangsu Key Laboratory of Resources and Environmental Information Engineering, Xuzhou 221116, China China University of Mining and Technology, Xuzhou 221116, China
国际会议
The 6th International Conference on Mining Science & Technology ICMST 2009(第六届国际矿业科学技术大会)
徐州
英文
1-5
2009-10-18（万方平台首次上网日期，不代表论文的发表时间）