共查询到18条相似文献,搜索用时 109 毫秒
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针对炉排炉焚烧生活垃圾及协同焚烧处置污泥(含水率40%、质量比例12%)的层燃燃烧过程,以及一次风风温对生活垃圾一污泥混合物料燃烧过程的影响开展模拟研究.结果 显示:协同焚烧污泥导致烟气温度在挥发分析出和燃烧阶段的前期上升、后期大幅下降,并导致炉膛的高温区域向炉排后段方向移动,最高温度降低,但对炉排上挥发物析出的时刻影... 相似文献
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垃圾焚烧处理技术在中国方兴未艾。但由于气候,生活水平和生活习惯的差异,中国的城市生活垃圾与西方的生活垃圾相比存在含水率高,垃圾热值较低的特点,垃圾在入炉前需要在炉前的垃圾池中进行一段时间的堆放,以尽可能渗出其中的水分,提高入炉垃圾的单位热值。垃圾不同于一般燃料,在堆放的过程中不但会有一些物理过程变化,还会发生一系列的生化反应,导致垃圾的成分特性发生变化,改变垃圾的燃料特性,从而对垃圾在炉内的燃烧状况产生明显的影响。本文通过建立实验平台模拟垃圾池中的环境,对原始垃圾进行一段时间的堆酵实验,从而得出垃圾水分及热值随堆酵条件(主要是时间)变化的情况,分析堆酵条件对垃圾燃料特性及炉内燃烧过程的影响。为中国垃圾焚烧厂堆酵工艺提供依据。 相似文献
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高虹 《中国城市环境卫生》1999,(4):20-22
研究适合我国国情的城市生活垃圾焚烧发电工艺,着重介绍低热值垃圾发电机组在运行过程中主要设备的调节参数及燃烧,给水,蒸发系统的监测与控制方法。 相似文献
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聂永丰 《中国城市环境卫生》2006,(2):12-16
可用于生活垃圾处理的技术多种多样,包括回收利用技术、填埋技术、焚烧技术和堆肥技术。近年来,世界各国纷纷开发多种生活垃圾资源化技术,通过回收生活垃圾中的有用成分实现生活垃圾的减量化和资源化。生活垃圾的再生利用包括啤酒瓶等玻璃容器的再利用,废纸、废塑料、废金属容器等的再生利用。利用生活垃圾中的有机物进行堆肥,利用可燃性物质燃烧产生热能,实现热电联供也是生活垃圾综合利用的形式。 相似文献
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加贝 《国外医学:卫生学分册》1990,(5)
八十年代,日本城市垃圾有70.6%是焚烧处理。六十年代后,伴随生活水平提高、生活方式多采,含有以石油化学产品为主的各种化学物质的垃圾进入了焚烧炉进行处理,焚烧过程很难保证安全化和无害化,随之而来的便是大气污染与水质污浊的二次公害问题。尤其是近来垃圾中电池带来汞的问题及燃烧过程中二噁(口英)的产生等都是人们所关注的。对HCI及 相似文献
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生物活性炭技术在欧洲水处理中的应用与发展 总被引:4,自引:0,他引:4
生物活性炭(BAC)技术在欧洲水处理中(包括对水进行深度处理,多种工业废水及生活污水处理)的应用非常普遍,它能有效地净化饮用水中各种微量污染物,同时,结合并优化生物降解活性炭吸附过程,对多种废水的处理显示了突出效果。 相似文献
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Labib OA Hussein AH El-Shall WI Zakaria A Mohamed MG 《The Journal of the Egyptian Public Health Association》2005,80(3-4):389-404
Medical establishments play important roles in different activities by using of modern technology to serve the humans and the environment through different departments in the establishment and its firms. Medical wastes are considered as a hazardous waste because they contain toxic materials, infectious, or non-infectious wastes and they are considered as a hazard to millions of patients, health care workers, and visitors. Treatment processes for medical wastes comprise autoclaving, microwaving, chemical disinfection, irradiation, plasma system, and incineration. Incineration is a thermal process, which destroys most of the waste including microorganisms. Combustion process must be under controlled conditions to convert wastes containing hazardous materials into mineral residues and gases. Hospital waste incinerators may emit a number of pollutants depending on the waste being incinerated. These pollutants include particulate matter, acid gases, toxic metals, and toxic organic compounds products of incomplete combustion, e.g., dioxins, furans, and carbon monoxide, as well as sulfur oxides and nitrogen oxides. So, there should be a reduction of emissions of most of these pollutants by air pollution control devices. This study was conducted in 51 medical establishments (ME) in Alexandria. To evaluate its incinerators. It was found that only 31.4% of total ME have their own incinerators to treat their medical waste. Also, the incinerators conditions were poor with incomplete combustion. So, the study recommend handling of all medical wastes of ME in Alexandria by the company which is responsible now for management of domestic solid wastes of the city. 相似文献
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Hillel I. Shuval 《Bulletin of the World Health Organization》1962,27(6):791-800
The practice of waste water utilization has grown considerably in recent years, owing to the growing demand for water for agricultural, industrial and domestic purposes. Such utilization presents certain problems in respect of the quality of the reclaimed water, on account of the presence of certain trace chemicals in the waste waters to be re-used. The presence of these trace chemicals may have important consequences in the agricultural or industrial utilization of waste waters, but from the public health point of view it is in the re-use of waste waters for domestic purposes that their presence has most importance, owing to their possible toxic effects. 相似文献
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采用水消费系数法收缴生活垃圾处理费的研究 总被引:6,自引:2,他引:4
介绍了目前收取生活垃圾处理费的几种主要方法,并对此进行了分析、比较,在此基础上提出了收取生活垃圾处理费的水消费系数法,即依据不同水消费群体的单位水消费量与生活垃圾产生量之间的规律测算其垃圾产生量及应交纳处理费金额,以供水收费系统为平台一并收缴垃圾处理费;并附以实例加以说明该方法的优缺点. 相似文献