| 磷酸盐对亚硝化系统的抑制及恢复 |
| 摘要点击 1495 全文点击 713 投稿时间：2017-05-19 修订日期：2017-07-17 |
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| 中文关键词 亚硝化系统 连续流 磷酸盐 抑制 恢复 |
| 英文关键词 nitrosation system continuous flow phosphate inhibition recovery |
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| 中文摘要 |
| 通过接种城镇污水处理厂的污泥，采用连续流反应器启动亚硝化系统并改变进水磷酸盐的浓度，研究了不同磷酸盐浓度对亚硝化系统的影响.结果表明经过14 d的运行，亚硝化系统启动成功，氨氮转化率达到92.2%，亚硝酸盐累积率为73.66%，亚硝酸盐产生速率达到14.42 g·（m3·d）-1.磷酸盐浓度在10~30 mg·L-1时对亚硝化系统的影响并不大；随着磷酸盐浓度持续提高，氨氮转化率在不断降低.当磷酸盐的浓度为80 mg·L-1时，系统的氨氮转化率为13.6%，亚硝酸盐累积率仅18.19%，亚硝酸盐产生速率仅0.54 g·（m3·d）-1，亚硝化反应受到严重抑制.将进水磷酸盐浓度降低到0，经过14 d运行，亚硝化系统获得恢复，且氨氮转化率可以达到80%以上，亚硝酸盐累积率达到86.96%，亚硝酸盐产生速率为15.63 g·（m3·d）-1. |
| 英文摘要 |
| The effect of phosphate concentration on nitrification was studied by using a stabilization nitrosation system, which was started up in a continuous flow reactor by inoculating sludge from a municipal wastewater treatment plant. The results showed that the nitrification system was started successfully after operating for 14 days. The conversion rate of ammonia nitrogen reached 92.2%, the nitrite accumulation rate was 73.66%, and the nitrite generation rate was 14.42 g·(m3·d)-1. There was no effect of phosphate concentration on the nitrosation system between 10 and 30 mg·L-1; and the conversion rate of ammonia nitrogen was decreased with the continuous increase in phosphate concentration. When the concentration of phosphate was 80 mg·L-1, with an ammonia conversion rate 13.6%, accumulation rate of nitrite of 18.19%, and nitrite generation rate of 0.54 g·(m3·d)-1, the reaction was severely inhibited. After reducing the influent phosphate concentration to 0, with the ammonia nitrogen conversion rate at more than 80%, nitrite accumulation rate improved to 86.96%, and the nitrite generation rate being 15.63 g·(m3·d)-1, the system recovered after operating for 14 days. |
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