摘要
采用SBR工艺处理模拟海水冲厕污水，研究了海水盐度、pH值、温度、氨氮负荷对模拟海水冲厕污水短程硝化的影响。结果表明，当城市生活污水中含有30％的海水时能够导致亚硝酸盐的积累从而实现短程硝化反应，亚硝酸盐的积累率可达94％，pH值和温度分别从6．5～7．5和25℃提高到8．3和28℃时，含30％海水的生活污水的亚硝酸盐积累率从65％提高到93％；原水中氨氮浓度越高则亚硝酸盐的积累量越大，在试验给定的条件下，进水氨氮浓度分别为31．1、55．43、98．48和135．07mg／L时，一个硝化周期结束时的亚硝态氮浓度分别为6、18、24和33．5mg／L。
The bench-scale sequencing batch reactor（ SBR） process was used to treat seawater toilet-flushing sewage. The influence of seawater salinity, pH, temperature and ammonia nitrogen loading on the shortcut nitrification of simulated sewage was studied. The results show that nitrite accumulation is accomplished in shortcut nitrification of municipal domestic wastewater containing 30% of seawater, and the nitrite accumulation rate reaches 94%. When the pH value and temperature increase from 6.5 - 7.5 and 25 ℃ to 8.3 and 28 ℃ respectively, the nitrite accumulation rate in the wastewater of 30% seawater increases from 65% to 93%. Furthermore, higher concentrations of ammonia nitrogen in the raw water led to enhanced capacity of nitrite accumulation. Under the given test conditions, the NO2 - N concentrations in the effluent after one operating period are 6 mg/L, 18 mg/L, 24 mg/L and 33.5 mg/L when the NH4 - N concentrations in the influent are 31.1 mg/L, 55.43 mg/L, 98.48 mg/L and 135.07 mg/L, respectively.
出处
《中国给水排水》
CAS
CSCD
北大核心
2007年第3期40-43,52,共5页
China Water & Wastewater
关键词
海水冲厕污水
海水盐度
短程硝化
seawater toilet-flushing sewage
seawater salinity
shortcut nitrification
