摘要
针对常规人工湿地中溶解氧不足的问题,采用页岩空心砖构建自动增氧型人工湿地系统,研究构建系统对废水COD的净化效果。结果表明,自动增氧型湿地内的DO比人工强化曝气型湿地高0.1 mg/L左右,COD去除率达到85%以上,比人工曝气型湿地高2%左右。这说明构建的自动增氧系统可提高湿地系统内部供氧能力,提高湿地系统对废水COD的净化效率。
Aimed at the issue of dissolved oxygen （DO） concentration insufficiency in conventional artificial wetlands, shale hollow bricks were adopted to build self-aeration artificial wetland system, for studying its removal efficiency of waste water COD. The experimental results indicated that DO concentration in self-aeration artificial wetland system is about 0.1 mg/L higher than artificial enhanced aeration wetland system, and COD removal rate of self-aeration artificial wetland system is more than 85%, about 2% higher than artificial enhanced aeration wetland system. It presented that the self-aeration wetland system can increase its internal oxygen supply capacity and the purification efficiency of wetland system to waste water COD.
出处
《湖北农业科学》
2016年第1期51-53,58,共4页
Hubei Agricultural Sciences
基金
重庆市教育委员会项目(KJ121215
KJ131207)
重庆市自然科学基金项目(cstc2013jcyj A20024)
重庆市文理学院大学生创新创业训练计划项目(2013001)
关键词
自动增氧型人工湿地
DO
COD
废水处理
人工曝气
self-aeration artificial wetland
DO
COD
wastewater treatment
artificial-aeration
