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首页> 外文期刊>Journal of Hazardous Materials >Evaluation of an aerobic composting process for the management of Specified Risk Materials (SRM)
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Evaluation of an aerobic composting process for the management of Specified Risk Materials (SRM)

机译：评估有氧堆肥工艺对特定风险物料（SRM）的管理

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摘要

In Nova Scotia (NS), approximately 2700 tonnes of Specified Risk Materials (SRM) are produced annually. SRM disposal is a serious concern for abattoirs and the beef industry. Composting offers a low risk and simple means to transform raw SRM into a more stable and easily managed material. In this project, wheat straw and sawdust were used to compost with SRM on a pilot scale. The study evaluated changes over time in total carbon, total nitrogen, Ph, temperature, moisture content and electrical conductivity. Compost temperatures in all treatments met the Canadian Council of Ministers of the Environment (CCME) guidelines for pathogen kill. The compost maturity tests showed that the evolution of CO_2-C in all the final compost products was less than 1 mg g~(-1) organic matter day~(-1). Wheat straw performed well as a composting feedstock for raw SRM as sawdust. While the wheat straw has advantages including greater availability, lower cost and easily decomposable carbon compounds more management is required to maintain adequate compost temperatures. The influences of seasonal variations due to temperate climatic conditions on SRM composting were also studied with wheat straw. The results suggest no significant differences in composting effectiveness between the two seasons.
机译：在新斯科舍（NS），每年生产约2700吨特定风险材料（SRM）。 SRM处置是屠宰场和牛肉行业的一个严重问题。堆肥提供了低风险和简单的方法，可以将原始SRM转换为更稳定和易于管理的材料。在该项目中，小麦秸秆和锯末被用于SRM的中试规模堆肥。该研究评估了总碳，总氮，Ph，温度，水分含量和电导率随时间的变化。所有处理中的堆肥温度均符合加拿大环境部长理事会（CCME）杀灭病原体的准则。堆肥成熟度试验表明，所有最终堆肥产品中CO_2-C的释放量均少于1 mg g〜（-1）有机物日〜（-1）。小麦秸秆作为木屑SRM的堆肥原料表现良好。尽管小麦秸秆的优势包括可获得性更高，成本更低以及易分解的碳化合物，但仍需要进行更多管理才能保持适当的堆肥温度。小麦秸秆还研究了温带气候条件引起的季节性变化对SRM堆肥的影响。结果表明两个季节之间的堆肥效果没有显着差异。

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