Because the removal efficiency of COD in RBC is well, so in the effluent the NO3-3~-N concentration is high, but COD is low.
这是因为，生物转盘的有机物去除效果很好，出水中硝氮浓度较高而碳源含量很低。
Because the removal efficiency of COD in RBC is well, so in the effluent the NO3-3~-N concentration is high, but COD is low.
这是因为，生物转盘的有机物去除效果很好，出水中硝氮浓度较高而碳源含量很低。
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