氧化还原电位在CAST工艺中的应用

APPLICATION OF ORP IN CAST PROCESS

考察了CAST系统厌氧选择区、主反应区中各时段DO、ORP及各项水质污染指标的变化。试验结果表明,在主反应区ORP主要受DO的影响,厌氧选择区中ORP与COD、TP浓度有较明显的相关关系。最后进行了设置三阶段ORP值控制曝气的试验,确认了用ORP控制CAST工艺的可行性。

DO, ORP and other water quality parameters of different reaction stages in anaerobic selector and main reactor of CAST system have been studied. The results indicated that ORP was mainly affected by DO in main reactor and there were clear correlativity between ORP and COD, between ORP and TP respectively in anaerobic selector. Finally a test of three phases aeration with ORP control was set up and the feasibility of using ORP as control parameter of CAST process was affirmed.