STATISTICAL CHARACTERISTICS OF THE OPERATION PARAMETERS OF AN ACTIVATED SLUDGE PROCESS FOR COKE-CHEMICAL WASTEWATER
活性污泥法处理焦化污水监测值的统计特性

A database was set up to hold the routine monitoring results of phenol, CN, COD, NH3-N concentrations in effluents and influents of the aeration tank of an activated sludge process for coke-chemical wastewater treatment. The outputs of time series analysis and frequency distribution analysis based on those data indicated that the majority of data are best fitted by a normal distribution while no periodic behavior was observed. The effluent COD was significantly correlated with influent COD and effluent phenol.