Naghavi Reza, Abdoli Mohammad Ali, Karbassi Abdolreza, Adl Mehrdad
School of Environment, College of Engineering, University of Tehran, Tehran, Iran.
Department of Energy, Materials and Energy Research Center, Karaj, Iran.
J Environ Health Sci Eng. 2022 May 19;20(1):545-554. doi: 10.1007/s40201-022-00801-6. eCollection 2022 Jun.
The current research proposed a method for optimally combining feed input ratios in order to improve the quantity and quality of daily biogas production through optimizing the variable response level in the Taguchi method. The anaerobic digestion (AD) process of an existing plant in Iran was simulated through a set of two-stage pilot reactors under mesophilic temperature conditions in order to achieve optimal operational performance. Three common substrates (organic fraction of municipal solid wastes, fruit and vegetable wastes, and horse manure) along with two recirculated materials; the post-digestion sludge and the secondary digester slurry, were investigated in 16 experimental runs based on four different pre-surface hypotheses. Comparison of the results of daily biogas energy (J/d/g-VS) in Run#9, to which the actual yield of hydrogen sulfide was minimal in parallel to a methane yield above 100 mL/g-VS, with the result of the optimal run with the ratios provided by the model, showed that the daily biogas energy was improved by 50% comparing to the control Run that had similar conditions to which was being applied in the full-scale existing AD plant.
当前研究提出了一种优化进料输入比例的方法，以便通过在田口方法中优化可变响应水平来提高每日沼气产量的数量和质量。为了实现最佳运行性能，在中温温度条件下，通过一组两级中试反应器模拟了伊朗现有工厂的厌氧消化（AD）过程。基于四种不同的预表面假设，对三种常见底物（城市固体废物有机部分、果蔬废物和马粪）以及两种循环物料；消化后污泥和二级消化池浆液，进行了16次实验运行。将第9次运行中每日沼气能量（J/d/g-VS）的结果与模型提供比例的最佳运行结果进行比较，第9次运行中硫化氢的实际产量最低，同时甲烷产量高于100 mL/g-VS，结果表明，与在现有全规模AD工厂中应用的具有相似条件的对照运行相比，每日沼气能量提高了50%。
