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市政污泥与生活垃圾混烧技术验证

Keywords: 市政污泥,生活垃圾,混烧

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Abstract:

对市政污泥与生活垃圾混烧进行了验证研究。结果表明,与生活垃圾单独焚烧相比,污泥与生活垃圾混烧后烟气中NOx、CO和HCl的浓度没有出现明显变化,而SO2浓度出现了下降(从82~93mg/m3下降至41~70mg/m3);Hg、Pb、Sn、Cr和Zn的浓度均表现为不同程度的上升,但仍然符合GB18485;二恶英从0.0087ngTEQ/m3降至0.0047ngTEQ/m3。掺烧半干污泥比例为10%、12%和15%时,吨物质的发电量分别为311.8kWh/t、306.7kWh/t和296.1kWh/t。混烧污泥在一定程度上降低了系统的发电量,因此建议混烧污泥的比例不应大于15%。测算的污泥混烧成本约209元/t(80%含水率)。

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