基于微生物膜反应器的在线BOD测量仪及应用

发布时间：2018-09-19 09:02

【摘要】：以待检测水样为微生物源及有机物源,在优化的条件下,连续流经流通式管状反应器制备得到原位培养的微生物膜反应器;以此为生物降解有机物传感器,研制在线生化需氧量(BOD)监测仪,并开展了一系列现场测试应用。结果表明,在优化条件下,微生物膜反应器的培养时间为14 h,生物降解效率为18.5%,检出限为0.5 mg/L,检测上限可达20 mg/L。在线监测仪检测标样的准确度与长期稳定性的相对误差(RE)与相对标准偏差(RSD)分别为-0.8%和±3.2%,多组水样测量值与国标法(BOD_5)的平均相对误差为+5.6%。微生物膜反应器在近3个月的测试过程中,性能稳定,准确度可靠,线性范围宽,可满足对地表水的在线监测需求。
[Abstract]:Using the water sample to be detected as microbial source and organic source, under the optimized conditions, the in situ culture microbial membrane reactor was prepared by continuous flow through a flowing tubular reactor, which was used as a biosensor for biodegradation of organic matter. An on-line biochemical oxygen demand (BOD) monitor has been developed, and a series of field test applications have been carried out. The results showed that under the optimized conditions, the culture time of microbial membrane reactor was 14 h, the biodegradation efficiency was 18.5 and the detection limit was 0.5 mg/L,. The detection limit could reach 20 mg/L.. The relative error between accuracy and long-term stability of the on-line monitor is -0.8% and 卤3.2% for the relative standard deviation (RSD), respectively. The average relative error between the measured values of multi-group water samples and the national standard method (BOD_5) is 5.6%. The microbial membrane reactor is stable in performance, reliable in accuracy and wide in linear range during the last 3 months of testing. It can meet the on-line monitoring demand for surface water.
【作者单位】：无锡市环境监测中心站;中国科学院长春应用化学研究所电分析化学国家重点实验室;无锡市光大分析技术有限责任公司;
【基金】：国家自然科学基金项目(No.21305132) 科技部重大专项项目(Nos.2012ZX07101-013-06,2013YQ17058502)资助~~
【分类号】：X832

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