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化工学报  2015 

电絮凝-半短程硝化-厌氧氨氧化组合工艺处理裂化催化剂废水

DOI: 10.11949/j.issn.0438-1157.20150597, PP. 4669-4675

Keywords: 半短程硝化,厌氧氨氧化,电絮凝,生物脱氮,裂化催化剂废水,过程控制,实验验证,数值分析

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Abstract:

裂化催化剂生产过程中产生的高盐度、高浊度、高氨氮、低C/N比废水难以处理。构建了电絮凝-半短程硝化-厌氧氨氧化组合工艺,考察了该组合工艺对实际裂化催化剂废水的处理效果以及处理稳定性。结果表明组合工艺处理裂化催化剂废水具有较好的稳定性,出水水质稳定在以下水平:浊度<30NTU,NH4+-N<10mg·L-1,NO2--N<3mg·L-1,NO3-<40mg·L-1,COD<100mg·L-1;通过进水氨氮浓度确定曝气时间的方式可以保证长期稳定的半短程硝化过程,出水NO2-/NH4+-N比值维持在0.9~1.4之间,满足厌氧氨氧化反应器的进水要求;同时在裂化催化剂废水的高盐度胁迫下厌氧氨氧化工艺能够表现出显著的厌氧氨氧化效果。

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