城市污泥焚烧研究进展

Research Progress of Municipal Sludge Incineration

城市污泥含有大量病原微生物、重金属等污染物质,且近年产量剧增,若处理不当将污染环境,危害人体健康。目前我国城市污泥处置方式有填埋、堆肥、土地利用、焚烧等。污泥焚烧是目前污泥处置最彻底、快捷、安全、有效的方法。本文从污泥焚烧的发展历程、焚烧方式、焚烧装置等方面对污泥焚烧的研究应用进展进行了总结归纳,系统地梳理污泥在焚烧过程中的各种影响因素,并对比了流化床焚烧炉、多膛式焚烧炉、回转窑焚烧炉、炉排焚烧炉等焚烧炉的各项指标和参数。在“双碳”背景下,结合污泥资源化利用的发展动向,提出将城市污泥与废弃物混合制成衍生燃料,发展循环经济,减少碳排放,也是城市污泥剩余价值再利用的一种有效途。

Urban sludge contains a large number of pathogenic microorganisms,heavy metals and other pollutants,and its output has increased sharply in recent year.If it is not handled properly,it will pollute the environment and endanger human health.At present,China's urban sludge disposal methods include landfill,compost,land use,incineration,etc.Sludge incineration is currently the most thorough,rapid,safe and effective method for sludge disposal.This paper summarized the research and application progress of sludge incineration from the aspects of the development history,incineration mode and incineration device,systematically sorted out various influencing factors of sludge incineration process,and compared various indexes and parameters of fluidized bed incinerator,multi-chamber incinerator,rotary kiln incinerator,grate incinerator and other incinerators.Under the background of“double carbon”and in combination with the development trend of sludge resource utilization,it is proposed that mixing urban sludge and waste into derivative fuel,developing circular economy and reducing carbon emissions is also an effective way to reuse the surplus value of urban sludge.