通过曝气生物滤池的中试试验找到了火力发电厂低浓度生活污水处理回用于循环冷却水的新工艺,为火力发电厂实现废水零排放提供了技术依据。得出了BAF运行于电厂生活污水水质条件下的最佳水力负荷为3m³/(m²·h),其CODCr、BOD5、氨氮、SS平均去除率分别为78.21%、82.53%、86.97%、85.82%,相应出水平均水质为CODCr14.17mg/L、BOD53.72mg/L、氨氮0.40mg/L、SS3.67mg/L,满足于以合金铜管为凝汽器管材的循环冷却水水质标准。

Through a pilot-scale study of biological aerated filter(BAF)，a new technology to reclaim the low concentrated domestic wastewater as circulating cooling water has been developed. In addition，the experiment can also provide some technical foundations of realizing zero drainage in a heat power plant，then we can conclude that the best hydraulic load for BAF's running under the condition which has low concentrated domestic wastewater in a power plant is 3m³/(m²·h). In this experiment, the average removal efficiency of COD_Cr,BOD₅,NH₃-N，SS is 78.21%，82.53%，86.97%，85.82% respectively. The average quality of the outlet is COD_Cr. 14.17 mg/L,BODS 3.72 mg/L, NH₃-N 0.40 mg/L, SS 3.67 mg/L. In conclusion, using BAF, the outlet of the reclaimed wastewater can meet the water quality standard of circulating cooling water used for the steam condensers which is made of alloy copper pipes.