Global NEST Journal, Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 3, 2024
<p style="text-align:justify"><span style="font-size:10.5pt"><span style="line-height:200%"><span style="font-family:"Times New Roman",serif"><a name="_Hlk170823277"><span lang="EN-US" style="font-size:12.0pt"><span style="line-height:200%"> As urbanization accelerates, an increasingly significant problem of municipal sludge treatment and disposal has emerged in China. Sludge is both a waste resource, therefore, its reasonable effective are crucial for protecting the environment promoting recycling resources. </span></span></a><span style="line-height:200%">This article reviewed current status technologies disposal, proposed mainstream routes China, including anaerobic digestion-land application, drying incineration-construction material utilization, aerobic </span></span><span style="line-height:200%">composting-land deep dewatering-emergency landfill. According to comparative analysis carbon emission, economic benefit life cycle assessment, application style="line-height:200%">was</span></span><span style="line-height:200%"> considered optimal technological route. It ha</span></span><span style="line-height:200%">s</span></span><span extremely low emissions</span></span><span (</span></span><span style="line-height:200%">-44.43 kg·t<sup>-1</sup></span></span><span style="line-height:200%">) (calculated as CO<sub>2</sub>/dry sludge)</span></span><span style="line-height:200%">, net costs</span></span> <span style="line-height:200%">($31.93/t)</span></span><span environmental benefits</span></span><span style="line-height:200%">SO<sub>2 </sub>(-1.9×10<sup>5 </sup>kg), electricity (-6.2×10<sup>8 </sup>kWh) fuel (-4.6×10<sup>7</sup>MJ)</span></span><span style="line-height:200%">.</span></span> style="line-height:200%">Based on this, it highlighted issues such vague policies, incomplete management system, inefficiency resource utilization sludge. In response these issues, suggestions were made improve relevant achieve more precise regulation, establish industrial chain sludge.</span></span> </span></span></span></p> style="text-indent:24.0pt; text-align:justify"><span Roman",serif"><span style="line-height:200%">In summary, this offer</span></span><span style="line-height:200%">ed</span></span><span innovative insights into route while highlighting practical engineering significance addressing policy, management, challenges. Its recommendations have potential drive improvements practices, contributing cleaner, greener, sustainable urban environment.</span></span></span></span></span></p>
Language: Английский