耗氧速率在线测定装置的应用  

Application of oxygen uptake rate online monitoring device

作　　者：文扬[1] 龙海涛[1] 王洪臣[1] 齐鲁[1] 何志江[1] 张源凯[1] 王皓[1] 石璧函 

机构地区：[1]中国人民大学环境学院,北京100827

出　　处：《环境工程学报》2017年第4期2621-2626,共6页Chinese Journal of Environmental Engineering

基　　金：国家高技术研究发展计划(863计划)(2012AA063404);国家水体污染控制与治理重大专项(2013EX07314-001)

摘　　要：该文研发了高精度的耗氧速率(OUR)在线测定装置,测试结果可为污水处理厂节能降耗优化运行控制提供重要参数。研究中通过梯形图软件编程(Ladder logic programming language,LAD)与可编程逻辑控制器(PLC)硬件控制来实现装置的研发。在河南某污水处理厂以及北京4座污水处理厂进行了现场测试,研究OUR在单个点位的变化规律以及沿程和随时间的变化规律。结果表明,推流式与SBR工艺类似,OUR随着污染物逐渐被降解而降低,MLVSS则变化不大,COD相对NH_4^+-N对OUR的影响更大。对于推流式工艺,可以用公式来计算出整个曝气池的平均OUR。该装置在现场应用中具有较好的稳定性与可靠性。In this study,a high precision oxygen uptake rate（ OUR） online monitoring device was developed,and the test results can be used as an important parameter in energy savings and optimum operation control of a wastewater treatment plant（ WWTP）. A device was developed using Ladder Logic programming language（ LAD） software and a programmable logic controller（ PLC） hardware control. Field testing was completed in a WWTP in Henan and four WWTPs in Beijing,and the variations in OUR at one point and along the tank or over time were studied. The results indicate that the plug flow is similar to the sequencing batch reactor activated sludge process（ SBR） process,the OUR declined with pollutant degradation,the variation of MLVSS was not obvious,and the impact of COD on OUR was greater than NH_4-＋-N. For the plug flow process,an equation can be used to calculate the average OUR of the entire aeration tank. This device had high stability and reliability in the field application.

关 键 词：耗氧速率 在线测定 活性污泥 梯形图编程 可编程逻辑控制 

分 类 号：X703.1[环境科学与工程—环境工程]