Faculty of Sciences, BIOMARE Laboratory, University Chouaib Doukkali, P.O. Box 20, El Jadida 24000, Morocco.
Bioresour Technol. 2010 Aug;101(15):5988-95. doi: 10.1016/j.biortech.2010.03.007. Epub 2010 Mar 23.
The aim of this work is the study of recycling urban primary sludge by in-vessel aerobic composting way. Two series of composting trials were carried out in an automated accelerated bioreactor in mixture with agricultural wastes: sugar beet leaves (C1); straw, sheep manure and sugar beet leaves (C2). Treatments were monitored with regard to physicochemical characteristics, heavy metal amounts and microbiological parameters of the final compost product. The general pattern of the temperature curve was typical for composts of organic waste. The different physicochemical characteristics of the final composts after a retention time in the bioreactor of 30 and 23 days, respectively for C1 and C2 were: pH: 7.3-7.2; C/N: 10.2-12; organic matter: 49.7-58.3%; NH(4)(+)/NO(3)(-): 0.24-0.2. Final compost showed low amounts of heavy metals, relatively high contents of nutrients and significant reduction of pathogens, suggesting the agricultural purposes of urban primary sludge.
本工作旨在研究采用罐式好氧堆肥法对城市原生污泥进行回收利用。在自动化加速生物反应器中，以农业废弃物（甜菜叶 C1；秸秆、绵羊粪便和甜菜叶 C2）进行了两系列堆肥试验。对最终堆肥产品的物理化学特性、重金属含量和微生物参数进行了监测。温度曲线的总体模式是有机废物堆肥的典型模式。在生物反应器中分别保留 30 天和 23 天之后，C1 和 C2 最终堆肥的物理化学特性分别为：pH：7.3-7.2；C/N：10.2-12；有机质：49.7-58.3%；NH(4)(+)/NO(3)(-)：0.24-0.2。最终堆肥显示出重金属含量低、养分含量相对较高且病原体显著减少，表明城市原生污泥可用于农业目的。
