混凝—铁碳微电解—次氯酸钠氧化处理高氮废水
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黄雷,刘叶芳,乐孝楠,黄瑞敏
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Treatment of high nitrogen wastewater by coagulation－iron carbon microelectrolysis－sodium hypochlorite oxidation process
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Lei HUANG,Yefang LIU,Xiaonan LE,Ruimin HUANG
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表5 不同因素对TN、NH4+-N去除率的影响
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Table 5 Effect of different factors on the removal rate of TN and NH4+-N
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| m（NaClO）∶m（TKN） | 6∶1 | 7∶1 | 8∶1 | 8.5∶1 | 9∶1 | 10∶1 |
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| 出水TN/（mg·L-1） | 37.37 | 26.55 | 15.18 | 12.31 | 12.31 | 12.01 | | TN去除率/% | 64.19 | 74.56 | 85.45 | 88.20 | 88.29 | 88.24 | | 出水NH4+-N/（mg·L-1） | 0.76 | 0.73 | 0.67 | 0.57 | 0.56 | 0.55 | | NH4+-N去除率/% | 97.48 | 97.56 | 97.78 | 98.08 | 98.12 | 98.18 | | 初始pH | 4 | 5 | 6 | 6.88 | 7 | 8 | 9 | 10 | | 出水TN/（mg·L-1） | 57.78 | 36.54 | 15.53 | 12.12 | 11.68 | 13.46 | 37.65 | 52.74 | | TN去除率/% | 42.48 | 63.62 | 84.54 | 87.93 | 88.37 | 86.60 | 62.52 | 47.49 | 出水NH4+-N/ （mg·L-1） | 1.28 | 1.15 | 0.81 | 0.59 | 0.54 | 0.74 | 1.06 | 1.09 | | NH4+-N去除率/% | 95.43 | 95.89 | 97.12 | 97.91 | 98.07 | 97.34 | 96.23 | 96.12 | | 反应时间/min | 0 | 10 | 20 | 30 | 60 | | 出水TN/（mg·L-1） | 102.78 | 20.41 | 13.21 | 11.76 | 11.07 | | TN去除率/% | 0 | 80.14 | 87.15 | 88.56 | 89.23 | | 出水NH4+-N/（mg·L-1） | 28.67 | 2.55 | 0.66 | 0.64 | 0.59 | | NH4+-N去除率/% | 0 | 91.08 | 97.68 | 97.75 | 97.95 |
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