Department of Civil and Environmental Engineering, University of Trento, Via Mesiano 77, I-38050 Trento, Italy.
Waste Manag. 2011 Sep-Oct;31(9-10):2085-91. doi: 10.1016/j.wasman.2011.02.024. Epub 2011 Apr 8.
In the sector of residual municipal solid waste management an increasing attention is put towards the role of biological treatments like bio-drying and bio-stabilization in order to decrease the need of landfilling volumes. The literature shows a lack of information concerning the emission factor of pollutants released from these processes. The available data are generally spot characterizations of concentration and air flow-rate that are used together in order to assess the emission factors. This approach caused significant differences among the available data as the release of pollutants is not steady. This paper belongs to a group of six papers concerning a research on material and energy recovery in integrated waste management systems, developed by a network of five universities. The contribution of the University of Trento, focuses on the bio-drying process with the following targets: (a) developing an innovative low cost method of sampling/measurement able to take into account the dynamics of release of pollutants; (b) checking the efficiency of a bio-filter; (c) verifying the variability of generation of some pollutants; (d) generating emission factors. The research was developed using a bio-drying pilot plant. As a treatment of the process air, the bio-reactor was coupled with a bio-filter. The emissions were characterized using an original approach based on the adoption of two measurement chambers suitable for hosting passive samplers. The passive samplers allowed the characterization of VOCs, N(2)O, NH(3) and H(2)S. A bio-chemical model, useful for energy and mass balances, supported the interpretation of the presented bio-drying run.
在城市固体废物管理领域，人们越来越关注生物处理方法，如生物干燥和生物稳定化，以减少对填埋量的需求。文献表明，关于这些过程释放的污染物排放因子的信息缺乏。现有的数据通常是污染物浓度和空气流速的现场特征，这些特征一起用于评估排放因子。这种方法导致了可用数据之间存在显著差异，因为污染物的释放并不稳定。本文是关于综合废物管理系统中物质和能量回收研究的六篇论文之一，由五所大学组成的网络开发。特伦托大学的贡献侧重于生物干燥过程，其目标如下：（a）开发一种创新的低成本采样/测量方法，能够考虑到污染物释放的动态；（b）检查生物过滤器的效率；（c）验证一些污染物生成的可变性；（d）生成排放因子。该研究使用生物干燥试验工厂进行。作为对工艺空气的处理，生物反应器与生物过滤器耦合。排放物的特征采用了一种基于采用两个适合容纳被动采样器的测量室的原始方法。被动采样器允许对 VOCs、N（2）O、NH（3）和 H（2）S 进行表征。生物化学模型有助于能量和质量平衡的解释，支持了所呈现的生物干燥运行的解释。
