垂直流湿地去除低C/N比尾水中氮磷的实验研究  

Purification Features of a Low C/N Wastewater by Using Two Aerobic Hybrid Vertical Flow Constructed Wetlands

作　　者：谭水成[1] 曹文平[2] 

机构地区：[1]河南城建学院市政与环境工程学院,河南平顶山467036 [2]徐州工程学院环境工程学院,江苏徐州221111

出　　处：《环境科学与技术》2017年第7期136-140,共5页Environmental Science & Technology

基　　金：河南省科技厅重点资助项目(142102310244)

摘　　要：构建了2个平行的不同基质的垂直流湿地,研究了2种湿地对低C/N比尾水处理效果、特性和机理。结果表明:水力停留时间为4 h,复合基质湿地对TN和TP去除率分别达到79.6%~94.69%和80.6%~95.1%,而单一陶粒基质湿地对TN和TP去除率分别32.88%~72.04%和34.5%~52.1%,复合基质湿地出水NO_2^--N浓度明显低于陶粒基质湿地。此外,复合基质湿地中的美人蕉的生长量和指示性微生物种群数量也明显优于单一基质湿地。说明复合基质湿地适合处理低C/N比尾水。Two parallel aerobic vertical flow constructed wetland （VFCW） with the different substrates were developed and applied for treating wastewater with low carbon and high NO3^--N, the treatment efficiency, performances and mechanisms were investigated. The experimental results indicated that the TN and TP removal rates of the VFCW with a hybrid substrates were respectively 79.6%-04.69% and 80.6%-05.1%, the corresponding removal rates of the VFCW with ceramisite were respectively 32.88%-72.04% and 34.5%-52.1%, and the effluent concentration of NO2^--N of the VFCW with a hybrid substrates was much lower than the VFCW with ceramisite. In addition, the canna growth quantity and the indicated microorganisms in the VFCW with hybrid substrates were higher than the VFCW with ceramisite. The conclusion suggested that the hybrid sub- strates were feasible and effective.

关 键 词：复合基质 垂直流湿地 陶粒 竹丝 氮素污染物 

分 类 号：X524[环境科学与工程—环境工程]