摘要
着重考察了不同温度条件下,溶解氧(DO)对硝化阶段出水中亚硝酸盐氮积累率ρ的影响。结果表明,温度分别为30、25、20℃时,DO对ρ值的影响呈现很大的差别。同时,在试验过程中发现,实现亚硝酸盐氮的初期积累作为短程硝化启动的重要环节具有一定的特殊性,其中pH值是影响亚硝酸盐氮初期积累的重要因素。此外还对"达标"点和两种"氨谷"点的定义及确定方法进行了说明,并分析了三者之间的关系,能够在出水氨氮达标的前提下,高效地实现短程硝化。
Effects of dissolved oxygen on accumulation rate of nitrite under different temperatures were investigated. The results showed significant different effects under temperatures of 30, 25, and 20 ℃. Meanwhile, it was observed that the initial accumulation of nitrite, as an important initiator of the partial nitrification process, had a certain degree of particularity, where the pH value was an important factor for the initial accumulation of nitrite. The definitions of the ＂complying point＂ and two types of ＂least ammonia point＂ were also explained, and analyzed the relationship between the three points. It was able to achieve efficient partial nitrification on the premise that the effluent ammonia was in compliance with national standards.
出处
《中国给水排水》
CAS
CSCD
北大核心
2017年第7期84-88,共5页
China Water & Wastewater
基金
国家水体污染控制与治理科技重大专项(2014ZX07201-011)
国家自然科学基金资助项目(51078008)
北京工业大学研究生科技基金资助项目(ykj-2013-10459)
关键词
温度
溶解氧
亚硝酸盐氮积累率
初期积累
达标点
氨谷点
temperature
dissolved oxygen
accumulation rate of nitrite
initial accumulation
complying point
least ammonia point
