摘要
采用人工废水对已受到严重抑制的厌氧氨氧化UASB反应器进行二次启动，通过降低进水浓度，在进水桶中加入加热棒，降低进水DO浓度，再逐步提高流量和浓度，经过69d使反应器恢复到高负荷状态，对总氮的去除速率为5.86kgTN／（m^3·d）。在反应器二次启动的过程中，需严格控制温度、DO、pH值、水力负荷等因素。反应器进水浓度较低时，应适当提高进水pH值，控制在7.5～7.7，随着反应器总氮负荷的提高，再逐步降低进水pH值至7.2～7.4。反应器进、出水电导率差值与总氮去除率呈线性关系，可根据其关系式计算反应器对总氮的去除速率。
The second start-up of the severely suppressed ANAMMOX UASB reactor was conducted with synthetic wastewater. The high load status of the reactor was recovered by reducing the influent concentration, adding heating bar into the influent tank, decreasing the influent DO concentration and gradually increasing the flow rate during the 69 d operation. The removal rate of total nitrogen was 5.86 kgTN/（ m3 ~ d）. Some parameters such as temperature, DO, pH and hydraulic load should be strictly controlled during the second start-up process of the reactor. The influent pH should be increased to 7.5 to 7.7 for low nitrogen load and be reduced gradually to 7.2 to 7.4 for high nitrogen load. There was a strong linear relationship between the removal rate of total nitrogen and the difference between influent and effluent conductivity. The removal rate of total nitrogen could be deduced from their relationship.
出处
《中国给水排水》
CAS
CSCD
北大核心
2013年第21期28-32,共5页
China Water & Wastewater
基金
国家自然科学基金资助项目(21277052)
中央高校基本科研业务费专项资金资助项目(2012ZM0042)
广东省自然科学基金资助项目(S2011040005784)
