Jørgensen K S, Puustinen J, Suortti A M
Finnish Environment Institute, Research Laboratory, Hakuninmaantie 4-6, FIN-00430 Helsinki, Finland.
Environ Pollut. 2000 Feb;107(2):245-54. doi: 10.1016/s0269-7491(99)00144-x.
Composting of contaminated soil in biopiles is an ex situ technology, where organic matter such as bark chips are added to contaminated soil as a bulking agent. Composting of lubricating oil-contaminated soil was performed in field scale ( [Formula: see text] m(3)) using bark chips as the bulking agent, and two commercially available mixed microbial inocula as well as the effect of the level of added nutrients (N,P,K) were tested. Composting of diesel oil-contaminated soil was also performed at one level of nutrient addition and with no inoculum. The mineral oil degradation rate was most rapid during the first months, and it followed a typical first order degradation curve. During 5 months, composting of the mineral oil decreased in all piles with lubrication oil from approximately 2400 to 700 mg (kg dry w)(-1), which was about 70% of the mineral oil content. Correspondingly, the mineral oil content in the pile with diesel oil-contaminated soil decreased with 71% from 700 to 200 mg (kg dry w)(-1). In this type of treatment with addition of a large amount of organic matter, the general microbial activity as measured by soil respiration was enhanced and no particular effect of added inocula was observed.
生物堆中污染土壤的堆肥处理是一种异位技术，在该技术中，诸如树皮碎片等有机物质作为膨松剂添加到污染土壤中。以树皮碎片作为膨松剂，在田间规模（[公式：见正文]立方米）下对润滑油污染土壤进行堆肥处理，并测试了两种市售混合微生物接种剂以及添加养分（氮、磷、钾）水平的影响。还在一种养分添加水平且不接种的情况下对柴油污染土壤进行堆肥处理。矿物油降解速率在最初几个月最快，且遵循典型的一级降解曲线。在5个月期间，所有含润滑油的堆中矿物油的堆肥处理量从约2400毫克/（千克干重）降至700毫克/（千克干重），这约为矿物油含量的70%。相应地，含柴油污染土壤的堆中矿物油含量从700毫克/（千克干重）降至200毫克/（千克干重），降幅为71%。在这种添加大量有机物质的处理方式中，通过土壤呼吸测量的一般微生物活性增强，未观察到添加接种剂有特别的效果。
