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中文摘要：
通过投加有机碳源改变进水的碳氮比，考察了不同碳氮比条件下缺氧／厌氧／好氧工艺的脱氮除磷效果。结果表明：在污泥回流比为120％的条件下，当C／N值为7、C／P值为75时，缺氧／厌氧／好氧工艺对污水的脱氮除磷效果最佳，对TP、NHf—N和TN的去除率分别可达95％以上、98％和67％。
英文摘要：
By adding organic carbon source to change the influent C/N ratio, the nitrogen and phosphorus removal by the anoxic/anaerobic/aerobic process at different C/N ratios was investigated. The results show that under the conditions of the return ratio 120% , the influent C/N =7 and C/P =75, the anoxic/anaerobic/aerobic process has the optimal removal efficiencies of N and P, and the removal rates of TP, NH4 -N and TN can reach more than 95%, 98% and 67% respectively.
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