连续流间歇曝气工艺脱氮除磷研究

对重庆某合建式完全混合活性污泥法污水处理厂，采用连续流间歇曝气工艺进行了脱氮除磷生产性试验研究，设定了14种曝气－停曝工况进行优选，结果表明，当采用曝气 3h、停曝3h的运行方式时，出水中 COD为38mg/L，NH_3-N为 8.5mg/L，SS为14mg/L，都能达到GB8978－1996的一级排放标准要求，如果辅以化学除磷，出水中PO₄^3－P才能达标．

Research on nitrogen and phosphor removal through the continuous flow-intermittent aeration technology.

A full-scale research was conducted with continuous flow-intermittent aeration technology adopted for nitrogen and phosphor removal in a wastewater treatment plant with completely mixed activated sludge process in Chongqing City. 14 aeration-intermittent operation cycles were studied to determine the optimal one. Results indicate that when an operation cycle of which aeration lasts 3 hours and intermission lasts 3 hours was adopted, the concentrations of COD, NH_3-N and SS in effuent were 38, 8.5 and 14mg/L respectively, which might achieve the first grade discharge standard of GB8978-1996. If chemical method was also applied, the PO_4~(3-)-P concentration would reach the standard.