城市污水生物除磷脱氮系统剩余污泥量的计算

剩余污泥量的计算是活性污泥法工艺设计的关键，而活性污泥法是同时生物除磷脱氮的主体工艺形式，因此，准确计算生物除磷脱氮系统的剩余污泥量十分必要。结合昆明市污水处理厂的运行实际。分析比较了传统计算法、污泥龄法和数学模型法在计算城市污水生物除磷脱氮系统剩余污泥量时的准确性，建议现阶段采用污泥龄法进行计算，提出修正系数K(0．75-1)与具体工艺形式有关，并给出K的几个建议值，同时指出数学模型法（ASM2）应是发展方向．     

市政工程基坑变形监测与数据分析

根据市政工程基坑施工变形监测的特点，介绍一种将传统的测量技术与现代测量技术相结合的监测模式以及杭州市丽水路深基坑变形监测网点布设方式和监测方法，并对监测数据分析，说明市政工程基坑施工监测的必要性及注意的问题。     

Solidification of Municipal Solid Waste Incineration Fly Ash with Cement and Its Leaching Behaviors of Heavy Metals

The solidifying qffect of cement addition on municipal solid waste incineration fly ash ( MSWFA for short, collected from the gas exhaust system of MSW incinerator), the interaction of MSWFA with cement and water and the leaching of heavy metals from cement-solidified MSWFA are investigated. The main results show that : ( 1 ) when MSWFA is mixed with cement and water, 112 evolution, the formation and volume expansion of AFt will take place, the volume expansion can be reduced by ground rice husk ash addition ; (2) heavy metals do leach from cement-solidified MSWFA and at lower pH more leaching will occur; (3) compared with cement - so-lidified fly ash, the leachate of solidified MSWFA is with higher heavy metal contents ; (4) with the increment of cement addition leached heavy metals are decreased ; and (5) concentrations of Zn , Mn , Cu and Cd in all the leachates can meet the relevant Standards of Japan, but as the regulations for soil and groundwater protection of Japan are concerned, precautions against the leaching of Pb , Cl^- and Cr^6 and so on are needed.     

基于PROFIBUS的城市生活废弃物自动化处理线方案设计

本文介绍了Profibus现场总线的技术特点和结构以及Profibus—DP现场总线技术在某城市生活废弃物自动化处理线项目中的应用，该项目的建设将在国内开创一条变废为宝、实现生活垃圾资源化的崭新途径。     

城市生活垃圾焚烧时HCl排放及脱除研究进展

在焚烧法被广泛用来处理城市生活垃圾的同时,焚烧时产生的HCl对受热面及人体的危害也日益引起人们的重视。从HCl生成机理入手,详细介绍了煤与垃圾、煤与PVC混烧时HCl的排放情况,脱除机理以及影响脱除的几个因素:含水量、温度、SO2、重金属与无机物。     

消化厚层通气法提高生活垃圾肥料菌体有机氮含量的研究

先通过厌氧消化阶段自然发酵产生的高温杀灭生活垃圾中有害病原微生物;再通过厚层通气发酵阶段黑曲霉的糖化作用和酵母菌生产菌体的增殖,把无机氮转化成酵母菌体有机氮,使产品增加了1.66%的酵母菌体有机氮.     

超滤膜法城市污水深度处理中水回用中试试验研究

以高碑店污水处理厂二级出水为处理对象，建立日产中水500t的超滤中试试验装置，研究膜法城市污水深度处理中水回用的工艺和操作条件，考察所能达到的技术经济指标，掌握放大规律，为万吨级工业装置和系统的设计提供基础数据．试验装置连续运行了约2500h，膜性能稳定，产水水质达到生活杂用水标准(CJ．25．1—89)。     

市政工程造价的优化策略分析

近年来，全国各地为了提高城市功能、改善投资环境，纷纷进行大规模的市政基础设施建设。市政建设项目既要做到尽可能地节约资金，又能完成市政项目建设。本文就如何控制市政工程造价进行了分析，并提出了若干的优化建议。     

Quantifying the water–energy nexus in Greece

In this paper we provide an assessment of the water–energy nexus for Greece. More specifically, the amount of freshwater consumed per unit of energy produced is determined: for both conventional (lignite, diesel and fuel oil-fired) and advanced (combined operation of gas turbine) thermal power plants in the electricity generation sector; for extraction and refining activities in the primary energy production sector; and for the production of biodiesel that is used as a blend in the ultimately delivered automotive diesel fuel. In addition, the amount of electricity consumed for the purposes of water supply and sewerage is presented. In view of the expected effects of climate change in the Mediterranean region, the results of this study highlight the need for authorities to prepare a national strategy that will ensure climate resilience in both energy and water sectors of the country.     

市政道路施工中沥青路面裂缝控制方法分析

本文介绍了当前市政道路建设的基本特点，阐述了裂缝问题的成因，提出了控制的办法，具有一定的借鉴价值。