Analysis and Evaluation of a Three-Stage Anaerobic Digestion Plant for Management of Biodegradable Municipal Solid Waste

IF 0.8 Q3 ENGINEERING, MULTIDISCIPLINARY

International Journal of Engineering Research in Africa Pub Date : 2022-05-20 DOI:10.4028/p-a24obb

E. K. Orhorhoro, Emmanuel E. Lindsay, J. O. Oyejide

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引用次数: 1

Abstract

Sub-Sahara Africa countries are faced with the problem of solid waste management and access to sustainable energy. There is a need to develop a technology that can help to manage the generated solid waste and the same time produce green energy that is sustainable. Hence, this research work that focused on the development of a novel three-stage anaerobic digestion (AD) plant for management of biodegradable portion of municipal solid waste. An experimental design and preliminary tests using co-digestion of municipal solid waste was conducted with the operation and process parameters utilized in this research work. Conceptual design was generated based on results of experimental design. The developed AD plant was evaluated for performance and the results obtained compared to an existing single stage fixed dome AD pilot plant using 100 kg of substrates with an organic loading rate of 3 kg/m3day for an operating time of 163 days. The cumulative biogas yield, and behaviour of the operation and process parameters utilized in this research work were evaluated. The results obtained reveal that unlike the single stage fixed dome AD pilot plant, the three-stage AD plant enables continuous production of biogas. Besides, optimum conditions of neutral pH range of 6.99 m to 7.01 m, slurry mesophilic temperature range of 37.05 °C to 37.15 °C, and organic loading rate of 3kg/m3d that favoured optimum biogas yield were established.

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三段式厌氧消化装置处理可降解城市生活垃圾的分析与评价

撒哈拉以南非洲国家面临着固体废物管理和获得可持续能源的问题。有必要开发一种技术，帮助管理产生的固体废物，同时生产可持续的绿色能源。因此，本研究工作的重点是开发一种新型的三级厌氧消化（AD）装置，用于管理城市固体废物的可生物降解部分。利用本研究中使用的操作和工艺参数，对城市固体废物的共消化进行了实验设计和初步测试。概念设计是根据实验设计的结果生成的。与现有的单级固定圆顶AD中试装置相比，对开发的AD装置的性能和结果进行了评估，该装置使用100kg基质，有机负荷率为3kg/m3天，运行时间为163天。对本研究工作中使用的累积沼气产量、操作和工艺参数的行为进行了评估。结果表明，与单级固定圆顶AD中试装置不同，三级AD装置能够连续生产沼气。此外，还确定了中性pH为6.99m～7.01m、浆液中温为37.05°C～37.15°C、有机负荷为3kg/m3d的最佳产气条件。

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来源期刊

International Journal of Engineering Research in Africa ENGINEERING, MULTIDISCIPLINARY-

CiteScore

1.80

自引率

14.30%

发文量

期刊介绍： "International Journal of Engineering Research in Africa" is a peer-reviewed journal which is devoted to the publication of original scientific articles on research and development of engineering systems carried out in Africa and worldwide. We publish stand-alone papers by individual authors. The articles should be related to theoretical research or be based on practical study. Articles which are not from Africa should have the potential of contributing to its progress and development.