In this paper, two different types of biowaste composting processes were carried out – composting without and with bioaugmentation. All experiments were performed in an adiabatic reactor for 14 days. Composting enhanced with bioaugmentation was the better choice because the thermophilic phase was achieved earlier, making the composting time shorter. Additionally, a higher conversion of substrate (amount of substrate consumed) was also noticed in the process enhanced by bioaugmentation. A mathematical model was developed and process parameters were estimated in order to optimize the composting process. Based on good agreement between experimental data and the mathematical model simulation results, a three-level-four-factor Box-Behnken experimental design was employed to define the optimal process conditions for further studies. It was found that the air flow rate and the mass fraction of the substrate have the most significant effect on the composting process. An improvement of the composting process was achieved after altering the mentioned variables, resulting in shorter composting time and higher conversion of the substrate.

在本文中，进行了两种不同类型的生物垃圾堆肥工艺——不使用生物强化和使用生物强化的堆肥。所有实验均在绝热反应器中进行 14 天。通过生物强化增强堆肥是更好的选择，因为更早达到了嗜热阶段，使堆肥时间更短。此外，在通过生物强化增强的过程中，还注意到更高的底物转化率（消耗的底物量）。为了优化堆肥过程，开发了一个数学模型并估计了过程参数。基于实验数据与数学模型模拟结果的良好一致性，采用三水平四因素Box-Behnken实验设计确定了进一步研究的最佳工艺条件。研究发现，空气流速和基质的质量分数对堆肥过程的影响最为显着。在改变上述变量后实现了堆肥过程的改进，导致堆肥时间更短，基质转化率更高。