摘要：

研究了NaClO₃抑制剂对SBBR工艺亚硝化过程的影响，并对NaClO₃抑制剂潜在生态毒性进行了分析。研究结果表明，投加NaClO₃对NH₄⁺-N的去除无明显影响，但可以提高NO₂^--N的积累速度，当NaClO₃投加量为1 mol/L时，实现NO₂^--N积累的时间比不投加NaClO₃缩短了10 d；且活性污泥颗粒化程度更高，生成颗粒污泥速度更快。NaClO₃毒性分析结果表明，投加1 mol/L NaClO₃不会对水体造成二次污染。投加NaClO₃抑制剂有利于SBBR工艺亚硝态氮的快速积累，能够在更短的时间内实现亚硝化。

关键词: 厌氧氨氧化, SBBR, 氯酸钠抑制剂, 污水处理

Abstract:

The influence of NaClO₃ inhibitor on the nitrosation process of SBBR process was studied, and the potential ecotoxicity of NaClO₃ inhibitor was analyzed. The research results showed that adding NaClO₃ had no obvious effect on the removal of NH₄⁺-N, but it could increase the accumulation rate of NO₂^——N. When the dosage of NaClO₃ was 1 mol/L, the time to achieve NO₂^——N accumulation was 10 days shorter than that of no NaClO₃. The degree of granulation of activated sludge was higher, and the rate of granular sludge generation was faster. The NaClO₃ toxicity analysis results showed that adding 1 mol/L NaClO₃ would not cause secondary pollution to the water body. The addition of NaClO₃ inhibitor was conducive to the rapid accumulation of nitrite nitrogen in the SBBR process and could achieve nitrosation in a shorter time.

Key words: anaerobic ammonia oxidation, sequencing batch biofilm reactor, sodium chlorate inhibitor, sewage treatment

中图分类号: 

• X703