通过碳化提高污水处理厂污泥的能源回收率

IF 8 Q1 ENERGY & FUELS Energy nexus Pub Date : 2024-04-01 DOI:10.1016/j.nexus.2024.100290
I Wayan Koko Suryawan , Iva Yenis Septiariva , Dhea Umi Falentina Widanarko , Fatimah Dinan Qonitan , Ariyanti Sarwono , Mega Mutiara Sari , Wisnu Prayogo , Nur Novilina Arifianingsih , Sapta Suhardono , Jun-Wei Lim
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引用次数: 0

摘要

污水处理厂(WWTP)使用脱水机将污泥与水分离。分离出的污泥用作垃圾衍生燃料(RDF)的原料,而分离出的水则在随后的污水处理厂装置中进行处理。然而,目前污水处理厂的污泥只是按政策处理成煤球,然后丢弃到垃圾填埋场。我们的研究重点是碳化温度对脱水装置中污泥特性的影响。初步分析表明,1 天龄的污泥含水量高(87.72%),热值低(3.44 兆焦/千克)。在 300 °C 下进行碳化可将污泥的热值大幅提高至 12,504 MJ/kg,含水量降至 60.72 %,含碳量增至 22.76 %,这表明碳化温度与能量回收率和含碳量之间存在直接关系。比较分析表明,在较低温度(200 °C和100 °C)下碳化的污泥产生的碳百分比(分别为22.23 %和21.66 %)和能量值较低,这突出表明了较高温度碳化在优化能量回收方面的效率。这项研究有助于发展可持续的有机废物回收利用实践,并支持实现可持续发展目标 11 和 12 的具体目标。这项研究通过提高污水处理厂污泥的利用率,将其作为能源生产的原材料,而不是直接丢弃在垃圾填埋场,从而促进可持续发展。这项研究深入探讨了从有机废物中回收能源的潜力、技术和政策在实现循环经济中的作用。
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Enhancing energy recovery from Wastewater Treatment Plant sludge through carbonization

The Wastewater Treatment Plant (WWTP) uses a dewatering machine to separate sludge from water. The resulting sludge is used as raw material for Refuse Derived Fuel (RDF), while the separated water is treated in the subsequent WWTP unit. However, the sludge from the WWTP is currently only processed into briquettes as per policy and then disposed of in landfills. Our investigation centers on the effects of carbonization temperature on sludge characteristics in a dewatering unit. Initial analysis revealed that 1-day-old sludge possesses a high moisture content (87.72 %) and a low calorific value (3.44 MJ/kg). Carbonization at 300 °C significantly enhanced the sludge's calorific value to 12,504 MJ/kg, reduced its moisture content to 60.72 %, and increased its carbon percentage to 22.76 %, indicating a direct correlation between carbonization temperature and both energy recovery and carbon content. Comparative analysis showed sludge carbonized at lower temperatures (200 °C and 100 °C) yielded lower carbon percentages (22.23 % and 21.66 %, respectively) and energy values, underscoring the efficiency of higher temperature carbonization in optimizing energy recovery.. This research contributes to developing sustainable organic waste recycling practices and supports achieving Sustainable Development Goals 11 and 12 targets. This research promotes sustainable development by improving sludge utilization from WWTPs as a raw material for energy production rather than being directly disposed of in landfills. This study provides insight into the potential for energy recovery from organic waste, technology, and policy's role in achieving a circular economy.

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来源期刊
Energy nexus
Energy nexus Energy (General), Ecological Modelling, Renewable Energy, Sustainability and the Environment, Water Science and Technology, Agricultural and Biological Sciences (General)
CiteScore
7.70
自引率
0.00%
发文量
0
审稿时长
109 days
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