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采用SBR工艺对炼厂渣油催化裂化废水的脱氮效果进行了研究,结果表明,一个运行周期内,连续进水好氧—缺氧交替的方式可使TN去除率达到92％以上。好氧—缺氧交替次数以3～4次为宜,时间比为1.4～1.6。
SBR technology was used to study the effect of denitrification on the refinery residue catalytic cracking wastewater. The results showed that the TN removal efficiency could reach more than 92% with continuous inflow of oxygen and hypoxia in one operation cycle. Aerobic - hypoxia alternation frequency to 3 to 4 times is appropriate, the time ratio of 1.4 to 1.6.