Undigested dewatered domestic sewage sludge from secondary treatment plant contained N 4.12%, of which organic form of N accounted for 93%.
未经消化的二级生活污水处理厂脱水污泥含氮4.12%，其中有机态氮占93%。
The removal rate of COD, NH3-N, HCHO were high, and the average removal rate of them were over 93%, especially, the HCHO's removal rate reached over 99%.
对于COD、氨氮（NH3-N）、甲醛（HCHO）的去除率高，各项指标的平均去除率为93%以上，尤其是HCHO的去除率高达99%以上。
The removal rate of COD, NH3-N, HCHO were high, and the average removal rate of them were over 93%, especially, the HCHO's removal rate reached over 99%.
对于COD、氨氮（NH3-N）、甲醛（HCHO）的去除率高，各项指标的平均去除率为93%以上，尤其是HCHO的去除率高达99%以上。
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