摘要
采用臭氧氧化与曝气生物滤池(BAF)组合工艺深度处理某石化污水厂二级生化处理出水。实验结果表明:气水比对BAF单元的COD去除影响不大,BAF单元的COD去除率为15%～48%;NH3-N去除率随气水比的增大而显著增大,当气水比由3∶1增至5∶1时,NH3-N去除率增大不明显;随气水比增大,TN去除率逐渐减小,PO43--P去除率呈现先增大后减小的趋势;当气水比为3∶1时,PO43--P的去除率最高;经BAF单元处理后,出水中ρ(NH3-N)为0.4～2.0 mg/L,TN为8.0～15.8 mg/L,ρ(PO43--P)为1.1～2.3 mg/L。
The combined process of biological aerated filter （BAF） with ozonation was used in the advanced treatment of petrochemical secondary biochemical treatment effluent. The experimental results show that： The gas-water ratio has little effect on the removal rate of COD （15%-48%）; The removal rate of NH3-N increases obviously with the increasing of gas-water ratio, however, there is no significant increasing while the gas-water ratio increases from 3 ： 1 to 5 ： 1 ; The removal rate of TN reduces with the increasing of gas- water ratio; The removal rate of PO43--P first increases and then decreases with the increasing of gas-water ratio, and is the highest when the gas-water ratio is 3 ： 1. After treated, the p（NH3-N）, TN, p（PO4^3-P） of the effluent are 0.4-2.0, 8.0-15.8, 1.1-2.3 mg/L respectively.
出处
《化工环保》
CAS
CSCD
北大核心
2013年第6期509-512,共4页
Environmental Protection of Chemical Industry
基金
国家水体污染控制与治理科技重大专题项目(2012ZX07201-005)
关键词
臭氧氧化
曝气生物滤池
深度处理
气水比
石油化工
废水处理
ozonation
biological aerated filter
advanced treatment
gas-water ratio
petrochemical industry
wastewater treatment
