A Review on Medical Waste Management and Treatment in Chongqing Three Gorges Region

Medical waste ,belonging to one of top-ronking toxic wastes, should be safely deposed of. The characteristics and harmness of the medical wastes are introduced, and the practical status of medical wastes in Chongqing three gorges region, including waste management and disposal methods, is investigated. Because of the special characteristics of the waste, the paper proposes some measures for managing and separate collection and treatment in the region, including separate collection, sealed transportation, pretreatment, incineration and safe landfill, so that the ecological environment and water resource can be protected from pollution in the Three Gorges region.     

The Features of Refuse Iucinerating Process and the Sketch of Incinerator Design

This paper presents the important features of incinerating living refuse and the regularities of incinerating process in drying,burning and burning up stages respectively by the anthor in laboratory and practise operating in incinerator for many years,and gives the sketch of advances in design incinerator.     

Fundamental research of hazard-free treatment for MSW incineration fly ash by metallurgical sintering

MSW incineration fly ash should be treated safely because it is one of acknowledged hazard solid wastes. Metallurgical sinter has a similar high temperature environment as melting treatment,therefore,it is proposed as hazard-free treatment for MSWI fly ash. Experiments are carried out to investigate the pelleting properties of fly ash and the seperation and solidification of heavy matals in MSWI fly ash iron-bath melting process. The results show that adding 8% cement and 1% agent for solidification,the compressive strength of fly ash pellets is 600~700 N/bellet when its curing period is about 8 ~11 d,achieving the demands for transporting and sintering. By iron-bath melting,more than 90% Mn and Fe in MSWI fly ash are removed and solidified in iron phase,and the distribution ratio of Cr and Cu in iron phase is beyond 70%. The leaching toxicity of molten slag are tested,and the leaching toxicity of all the metals can reach the standard. All the results indicate that the hazard-free treatment for MSWI fly ash by metallurgical sintering is feasible.     

乌当区垃圾资源化处理的思考

针对垃圾围城的趋势越来越严重，从垃圾回收的意义出发，指出了垃圾分类回收的意义，对可回收利用的垃圾进行分类，引出垃圾分类回收利用的方法，同时结合乌当区目前正在运行的污水处理厂产生的污泥，提出了探讨性的解决措施，以缓解用地紧张问题。     

广州市城市生活垃圾处理策略的规划分析

在分析了城市生活垃圾的发展和广州市城市生活垃圾的处理现状的基础上,指出今后采用焚烧、堆肥、回收利用和卫生填埋多种处理方式来处理广州市的城市生活垃圾是可行的。     

某污泥焚烧项目污泥中氨对脱硝设施影响的分析

单独干化焚烧作为独立自主的、能长期妥善解决污水污泥出路的技术路线,其重要性日益凸显,但污泥焚烧产生的燃烧废气,除了无害的二氧化碳及水蒸汽外,还含有许多污染物质,主要的污染物质包括烟尘、酸性气体、重金属污染物和二噁英类,为此主要对污泥焚烧项目污泥中氨对脱硝设施的影响进行了分析。污泥在干燥过程排放的废气中含氨,可与污泥焚烧过程产生的NO_X反应,起到一定脱硝作用,经过试运行及数据监测表明,在不添加氨水的情况下使焚烧尾气中NO_X达标排放,从而降低了额外脱硝设施的投资及氨水贮存过程中的风险,降低了氨水添加后的氨逃逸对大气环境的影响,具有良好的经济环境效益。故建议:确保污泥干化量,以保证通入焚烧炉的干化废气中NH₃的量,污泥需合理配伍,确保污泥中含氮量均匀,使焚烧炉内氨氮比稳定。     

城镇生活垃圾综合处置系统及关键技术的研究进展

结合浙江省城镇生活垃圾处理处置的现状,分析了单一处理方式,如填埋、焚烧和堆肥等存在的问题;提出了城镇生活垃圾"三位一体"综合处置的工艺路线;探讨了垃圾综合处置系统应解决的关键技术问题,为实现垃圾资源化、减量化和无害化处理提供有效的途径.     

MSW Treatment Techniques Informative for Chongqing

On the basis of the geographic, climatic characteristics and air pollution conditions of Chongqing city, referring to the application and development of Municipal solid waste (MSW) treatment techniques developed recently in advanced countries and other domestic cities, Varieties of MSW treatment techniques, incineration, landfill, composting, and comprehensive utilization, are analyzed in comparison. Their applying prospects and limitations in Chongqing are marked out.     

Android用户端东北地区秸秆焚烧点监测系统开发与应用

秸秆焚烧会产生大量有毒有害物质,严重影响大气质量,且易引发火灾。随着国内农村生产生活方式的改变,秸秆逐渐转变为农业废弃物,露天焚烧情况变得越来越严重,快速、高效、秸秆焚烧点监测迫在眉睫。该研究基于安卓（Android）操作系统,结合中等分辨率成像光谱仪（Moderate Resolution Imaging Spectroradiometer,MODIS）遥感数据,利用Python语言、ArcGIS Server、MySQL技术构建了一个客户端与服务端（Client/Server,C/S）分离的秸秆焚烧火点监测系统,以实现秸秆焚烧点的快速查询、定位以及数据可视化。应用该系统的案例分析表明,2010-2020年间东北地区秸秆集中焚烧的时间有由秋季向春季转移的变化趋势,逐渐形成春季集中焚烧-夏季耕作-秋季零星焚烧-冬季覆盖的规律;焚烧点主要集中在三江平原和松嫩平原,重心在哈尔滨市和绥化市的交界处。综上,该系统可以为秸秆焚烧点监测提供快捷方便的技术手段,方便农业和环境部门协同监控保护性耕作的实施情况,促进东北地区保护性耕作的实施与农业环境保护。     

基于生态效率的垃圾焚烧发电项目选址评价体系的构建

在介绍垃圾焚烧优点的基础上,分析了基于生态效率的垃圾焚烧发电项目选址评价的必要性,构建了生态效率评价指标体系。