Aerobic fermentation composting can transform solid organic waste into biological organic fertiliser, while reducing resource wastage and ecological damage. However, in the composting process, a serious loss of nitrogen occurs, primarily in the form of the release of ammonia gas. The release of ammonia gas not only pollutes the environment, but also diminishes the presence of nutrient elements, resulting in compost products that are lower in quality. Given that many factors influence the release of ammonia gas during the aerobic fermentation process, it is difficult to determine optimal process parameters. In an effort to address this issue, we propose herein a combinational weighting method based on the analytic hierarchy process (AHP) and entropy weighting method to determine the weight of each secondary index. We also establish a parametric optimisation model based on the ammonia release conditions of the ELECTRE-I method that provides a theoretical underpinning and a decision basis for optimising the process parameters that mediate the release of ammonia during the aerobic fermentation process. This method can be widely employed to reduce the release of ammonia gas and may be of significance to the future development of bioengineering-based composting technology.

好氧发酵堆肥可以将固体有机废物转化为生物有机肥，同时减少资源浪费和生态破坏。然而，在堆肥过程中，会发生氮的严重损失，主要以氨气的释放形式出现。氨气的释放不仅会污染环境，还会减少营养元素的存在，导致堆肥产品质量下降。由于影响好氧发酵过程中氨气释放的因素很多，因此很难确定最佳工艺参数。为了解决这个问题，我们在此提出了一种基于层次分析法（AHP）和熵权法的组合加权方法来确定每个二级指标的权重。我们还建立了基于ELECTRE-I法氨释放条件的参数优化模型，为优化介导好氧发酵过程中氨释放的工艺参数提供了理论依据和决策依据。该方法可广泛用于减少氨气的释放，对未来生物工程堆肥技术的发展具有重要意义。