摘要
通过建立垂直潜流人工湿地实验装置,研究ORP、DO、pH与脱氮过程之间的关系.结果表明:系统内硝化作用强于反硝化作用,硝化作用耗氧使DO浓度从进水到出水呈现下降的趋势.石灰石填料释放碱度以及硝化作用消耗碱度两者之间的作用会影响系统的pH值.在实验系统中,从进水到出水,TN、TP逐渐降低时,ORP显示为上升的趋势.
A vertical subsurface flow wetland(VSFW) was constructed to study the relationship between ORP、DO、pH with the process of denitrification.The results show that nitrification is stronger than denitrification within the system;oxygen consumption due to the nitrification process makes the concentration of DO in water descend from the inlet to the outlet;alkalinity resulting from the interaction between denitrification and limestone filling leads to a decrease in pH,and with the gradual decrease in TN and TP from the inlet to the outlet,ORP shows a trend of increase in the VSFW system.
出处
《玉溪师范学院学报》
2011年第12期24-27,共4页
Journal of Yuxi Normal University
基金
国家水体污染控制与治理科技重大专项
编号:2009ZX07102-002-04
云南省自然科学基金项目
编号:2006C0040Q
