Abstract：A set of automatically respirometric-titrimetric system to monitor simultaneously oxygen uptake rate(OUR)and hydrogen ion variation rate(HVR) was developed, which consists of the pH monitoring unit, titrant auto-dosing unit and hybrid respirometer. Timely sampling and measuring the NH4+-N concentration in the nitrifying process, the accuracy of the system for monitoring dynamic process of nitrification was evaluated by comparing the consistency between the measured NH4+-N concentration and the predicted concentration based on OUR and HVR respectively. For the batch experiments process with initial NH4+-N concentrations of 20 and 25 mg/L respectively, the correlation coefficients between the measured value and the predicted value based on OUR were 0.9967 and 0.9972, 0.9991 and 0.9992 between the measured value and the predicted value based on HVR, that showed that the dynamic process of nitrification could be timely and accurately presented with measuring OUR and HVR in the process.
张欣, 张代钧, 卢培利, 娄小丹, 宋雪, 林宁波. 应用呼吸-滴定测量监测硝化动态过程[J]. 中国环境科学, 2010, 30(10): 1316-1322.
ZHANG Xin, ZHANG Dai-Jun, LU Pei-Li, LOU Xiao-Dan, SONG Xue, LIN Ning-Bo. Monitoring the dynamic process of nitrification with respirometry-titrimetry. CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(10): 1316-1322.
