浅议石墨炉原子吸收法测定水中的四乙基铅

用三氯甲烷萃取水中的四乙基铅,直接在石墨炉原子吸收仪上进行测定。结果表明：本方法的相对标准偏差为5．9％,平均回收率在90．4％～108％之间,检出限为1．3×10^-5mg／L,准确度高,精密度好。     

齐齐哈尔市中心城区生活垃圾处理规划

通过对齐齐哈尔市中心城区生活垃圾处理现状和发展趋势的分析,提出生活垃圾从现在的卫生填埋处理,向资源化综合处理与卫生填埋相结合的处理方式发展,同时对生活垃圾处理设施建设进行了规划。     

废铜熔化精炼过程烟尘治理系统设计

随着国民经济不断发展,铜加工原料的短缺问题日趋严重,因此,废铜回收再利用已成为弥补铜加工原料不足的重要措施。熔炼设备一般以反射炉(竖炉、精炼炉)为主,原料来源比较复杂,有边角料、废电缆电线等,所以,废铜熔化、精炼过程产生烟尘中,有CuCl、CuO、ZnO、SO2、HCl、氯化盐覆盖剂、二恶英、油脂及炉子燃烧不完全的产物CO等,必须进行净化处理。根据烟气原始参数,制定出合理的治理方案及工艺流程,使之达标排放。     

管道喷射活性炭脱除焚烧炉烟气中的多环芳烃

针对我国城市生活垃圾的特点,在一台小型流化床装置上进行了垃圾焚烧试验,研究了管道喷射活性炭对16种多环芳烃(PAHs)的脱除效果.结果表明,垃圾原料和炉渣中主要是4环和5环PAHs;飞灰中以3环、4环、5环PAHs占主导地位;烟气中3环和4环PAHs最多;随着活性炭投加量的增大,烟气中PAHs浓度降低,飞灰中PAHs含量和PAHs总去除率增加;在试验范围内,PAHs脱除率为76%～91%.     

反射式加热炉的清洁化工艺改造

介绍了一种新研制开发的加热炉型 ,并以生产运行的实践数据论证了其技术的先进性和效益的显著性 ,展望了其可作为清洁生产工艺设备进行推广的广阔应用前景。     

垃圾渗滤液排污管结垢原因分析及防治对策

针对深圳市下坪垃圾填埋场渗滤液排污管道结垢现象,从结垢物组成分析、水质情况、管道设计、管道使用方法等方面,就其结垢原因进行分析探讨,并提出防治对策。     

城市生活垃圾焚烧处理初探

对我国城市生活垃圾焚烧处理的可行性进行了初步探讨,并对目前国内城市生活垃圾焚烧处理技术的现状及关键问题进行了分析和 评述。      

Investigation of hydrogen generation from municipal solid waste incineration fly ash

Hydrogen generation from municipal solid waste incineration fly ash was investigated to understand the influences of contacting method, kinds of contact solution, liquid to solid ratio, and particle size distribution of materials. Redox properties of materials and hydrogen generation were also studied. The largest quantity of gas generated in contact with water was 29.1 ml/g-ash, most of which was hydrogen. Fluidized bed fly ash generated more gas than stoker fly ash. In order to calculate the hydrogen generation potential (the maximum quantity of gas generated in contact with water), a novel system using a Y-shaped test tube and NaOH was utilized. This method gives values which are related to the quantity of generated gas in contact with water. A relationship between the aluminum content and hydrogen generation potential was observed, especially for fluidized bed fly ash. The reducing potential of fluidized bed fly ash was higher than that of stoker fly ash. Only fluidized bed fly ash showed a positive correlation between aluminum content and reducing potential, and between reducing potential and hydrogen generation potential. These results suggest that fluidized bed fly ash contains more Al⁰ than stoker fly ash. Received: September 11, 1998 / Accepted: March 19, 1999     

A generic comparison of the airborne risks to human health from landfill and incinerator disposal of municipal solid waste

A comparison of the potential risks to human health from municipal solid waste (MSW) incineration and landfill on a generic basis is attempted. For this purpose a 'worst case' approach is adopted and a number of assumptions regarding the size and activities of each waste disposal method are made. The airborne pollutants measured for an incinerator are different from those for a landfill with or without gas collection. However, based on the available information it appears that as far as airborne pollution is concerned, landfill sites without gas collection pose a potentially higher generic risk to human health than MSW incinerators performing to Environmental Agency (UK) standards. This analysis cannot be used to replace specific evaluations for a particular incinerator or a landfill site because local conditions can have a very large impact on the magnitude of risks involved.     

市政垃圾焚烧飞灰中添加CaO抑制PCDD/Fs生成试验探究

采用自制装置,以CaO作为PCDD/Fs生成抑制剂,对市政垃圾焚烧飞灰做热处理。通过试验考察温度、CaO添加量等因素对飞灰中PCDD/Fs生成的影响。结果表明：质量分数为5%的CaO添加可以减少80%的PCDD/Fs生成。