氧化沟型A^2/O工艺设计改造

STUDY ON THE DESIGN MODIFICATION OF A^2/O DITCH PROCESS

根据某化工工业园产生的高浓度工业废水特点,通过分析污水处理厂原传统型A2/O工艺存在的问题,对原有工艺进行改造。改造后运行结果表明:氧化沟型A2/O工艺对COD、NH3-N、TP的去除率分别达到57.26%、76.94%、98.36%,生化系统出水水质指标达GB 8978—1996《污水综合排放标准》一级标准。

According to the high concentrations of industrial wastewater in chemical industrial park,through the analysis of problems existing in original ordinary A2/ O process,the improved A2/ O ditch process was put forward. The transformation operation results showed that the removal rate of COD、NH3- N、TP was 57. 26% 、76. 94% and 98. 36% respectively; and indexes of the effluent by the biochemical system achieved the first level standard: 'Integrated Wastewater Discharge Standard'( GB 8978—1996).