【摘要】 研究了城市污泥高温好氧堆肥过程中各类有机物的动态变化。结果表明,污泥经30 d堆肥后,总有机质、DOC和易分解有机质的含量分别由469 g/kg、8 234 mg/kg、98.3 g/kg下降至225 g/kg、4 977 mg/kg、70 g/kg;腐殖质和胡敏酸含量升高,富里酸含量显著降低;污泥堆肥过程中有机物不断向腐殖化方向转化,污泥中有机质逐渐趋于稳定。污泥堆肥处理有助于提高其土地利用的肥料价值和降低环境风险。更多还原

【Abstract】 The dynamic changes of total organic matters,dissolved organic matters,degradable organic matters and humic matters during thermophilic aerobic composting of municipal sludge were studied.After 30 d composting of municipal sludge,the total organic matters,DOC and degradable organic matters are decreased from 469 g/kg,8 234 mg/kg and 98.3 g/kg to 225 g/kg,4 977 mg/kg and 70 g/kg respectively.The humic matters and humic acid are increased,and the fulvic acid is decreased significantly.The organic matters are continuously transformed into humic matters and gradually stabilized during composting of municipal sludge.The fertility of sludge is improved,and the environmental risks are decreased when the municipal sludge is treated by composting.更多还原