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首页> 外文会议>Moratuwa Engineering Research Conference >Mechanistic model for electricity generation via biomethane production through anaerobic digestion of organic fraction of municipal solid waste generated in Sri Lanka
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Mechanistic model for electricity generation via biomethane production through anaerobic digestion of organic fraction of municipal solid waste generated in Sri Lanka

机译：通过在斯里兰卡产生的城市固体废物有机分数的厌氧消化，通过生物甲烷生产的发电力学模型

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Waste management practices such as open dumping and composting are widely used for the management of municipal solid waste (MSW) in Sri Lanka. Severe socio-economic and environmental problems occur due to open dumping of major fraction of MSW. Anaerobic digestion is a sustainable waste management strategy to manage organic fraction of MSW (OFMSW). In order to evaluate the feasibility of this strategy, a mechanistic model was developed using a steady state anaerobic digestion model which was modified using improved Chen-Hashimoto kinetic equations. It was applied to treat OFMSW generated in open dumping site at Karadiyana in Sri Lanka. The daily MSW arrival to the site is 550 tons/day and input OFMSW slurry to the anaerobic bioreactor contained of total solids 70 g/l, volatile solids 55.6 g/l, carbohydrates 58.5%, proteins 13% and lipids 3%. According to the mechanistic model, minimum payback period of 1.79 years was achieved when anaerobic bioreactor operated in continuously fed mode at operating temperature of 40°C and hydraulic retention time of 11.28 days. The volatile solid reduction efficiency of 76.62%, methane yield of 0.26 m per kg of volatile solids added, electricity generation of 10.31 W per kg of OFMSW per day and carbon dioxide generation of 0.21 kg per kg of OFMSW were achieved at these optimized process conditions. The model was limited to apply for continuously fed anaerobic bioreactors operated at temperature ranging from 30°C to 40°C.
机译：诸如公开倾销和堆肥等废物管理实践广泛用于斯里兰卡的市政固体废物（MSW）的管理。由于MSW的主要分数，由于开放倾销而发生严重的社会经济和环境问题。 Anaerobic Digestion是一种可持续的废物管理策略，用于管理MSW（OFMSW）的有机分数。为了评估该策略的可行性，采用稳态厌氧消化模型开发了机械模型，其使用改进的Chen-Hashimoto动力学方程进行了修改。它被应用于在斯里兰卡卡拉迪亚纳的开放式倾销部位产生的威胁。每日MSW到达该网站是550吨/日，并输入含有总固体70g / L的厌氧生物反应器，挥发性固体55.6g / L，碳水化合物58.5 ％，蛋白质13 ％和脂质3 ％ 。根据机械模型，当厌氧生物反应器以40°C和液压保留时间为11.28天的液压保留时间，厌氧生物反应器时，最低回收率为1.79岁。挥发性固体降低效率为76.62 ％，每千克挥发性固体甲烷产率为0.26米，在这些优化过程中实现了每千克/天/千克/千克的二氧化碳产生0.21kg的二氧化碳产生。状况。该模型仅限于在温度范围为30℃至40℃的温度下施加连续供给的厌氧生物反应器。

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