城镇污水处理厂污泥处置与资源化利用探讨

随着我国经济的快速发展,人民的生活水平的日益提高,中国的城镇化建设的进程也快速进行着。随着城镇企业的发展,污水越来越多,污水处理的规模也越来越大。然而,在污水处理的过程中会产生大量的污泥,污泥的产量与污水的处理产量呈正相关的关系,净化的污水越多,则产生的污泥就越多。这些污泥既含有大量的水分、丰富的有机物及氮、磷、钾等有用的营养元素,又含有很多重金属、寄生虫等。因此,如何对这些污泥进行妥善处理,既能避免其中的有害物质对环境造成污染,又能合理利用其中的有用资源,避免资源的浪费,成为人们热切关注的话题。传统的解决污泥处理方法已经不能很好的满足环境保护与资源利用的要求,如何寻找一种更好的污泥处理办法,可以兼顾环境保护和资源利用,是我国污泥处理亟待解决的问题。本文通过分析我国污泥处理现状以及其中存在的问题,通过总结,对如何创建既符合环保要求又可以有效利用资源的污泥处理模式进行探讨,以期对完善我国污泥处理机制有所裨益。     

污泥治理技术研究与应用

城市发展过程中产生了大量的污泥,这些污泥如果不进行有效治理,将会对城市环境等各方面都会产生消极影响。所以城市有关部门一直都致力于研究污泥处理技术,多年的研究,增压式真空预压处理工艺被研发并且应用在污泥处理实践中。此种处理工艺与传统的污泥治理工艺相比,可以将污泥治理减量化、实现无害化治理,能够在比较短时间内恢复当地的生态。本文主要通过对增压式真空预压处理工艺的简单介绍,而后对该处理工艺所涉及到的技术以及具体应用进行了探讨分析,仅供参考借鉴。     

北江水厂污水及污泥处理研究

北江水厂通过污泥脱水车间的一整套设备对自来水生产过程中产生的污水及污泥进行了无害化处理。文章对该设备的工艺流程和运行成本进行分析，希望能为今后给水厂污水和污泥处理工程设计提供参考。     

堆肥技术运用于城市污水处理厂污泥再利用的研究

经对大连市某污水处理厂产生污泥进行堆肥试验,结果表明,其有机质含量合理,重金属含量远远低于规范要求,处理工艺简单,符合污泥处理减量化、无害化、资源化要求。     

市政污泥合理化处置策略探讨

在处理城镇污水的同时如何有效安全地处理市政污泥是迫在眉睫和必须解决的难题.在我国,城镇污水处理厂产生的大量副产物-市政污泥,富集了污水中大量有机物且含水率高,成分复杂等特点,具备了"资源"和"污染"的双重属性.本文通过实际案例的调分析,研究探讨了现阶段市政污泥的处置现状和存在的问题与原因,并提出了相应的对策和建议为解决...     

基于DCS大型火电机组城市污泥掺烧智能控制优化

近年来,随着我国经济高速发展,大量产生的城市生活污泥如何处置成为一大难题,传统的填埋等手段已无法满足日益严格的环保要求。煤粉炉掺烧污泥是城市污泥解决污泥一个非常简单有效的方法,能够利用最小的资源使得大量的城市污泥得到无害化处理,并能回收其中的热量,获得最大的社会和经济效益。国内外已经大量展开了煤粉炉混烧污泥的试验工作,有的已经投入了商业运行,如国内已有多家电厂300MW大型火电机组开始尝试将城市生活污泥用大型煤粉炉掺烧。     

污泥处理中的低碳化策略研究

在污染防治过程中,有关污泥的处理是污染处理的一个大课题,低碳化处理是当前中国污泥处理的最新策略。笔者结合我国现实的社会背景,对污泥的处理处置方式进行详细探讨,以能够更好的转变我国污泥处理的方式方法,实现从卫生无害化到低碳排放的目标。     

污泥干化热解处置

随着社会经济的发展，人们生活水平的越来越高，产生的污染物也越来越多，对水环境的污染也越来越严重，因此水处理产业得到了快速发展，由于我国在治理水污染的过程中，存在重污水治理轻污泥处置的现象，使得我国的污泥处理起步较晚，使我国每年2000多万吨的污泥大部分未经有效处理而处置，从而导致二次污染。     

各种焚烧炉在市政下水污泥焚烧中的应用

污水处理厂剩余活性污泥中含有99%以上的水分,其余的1%中含有机物(60%～70%)、营养物、病原体、重金属离子和毒性有机物,处置不当容易产生二次污染。文章介绍了各种污泥焚烧炉炉型,污泥焚烧设备主要有回转焚烧炉、立式多段焚烧炉、流化床式焚烧炉等。以焚烧技术为核心的污泥处理方法是最彻底的处理方法,是发达国家普遍采用的处理方法。流化床污泥焚烧炉在国际上也得到了较好的应用。文章旨在为国内市政下水污泥焚烧工作提供参考。     

污泥处理与资源化利用分析

<正>随着城市污水处理的普及,城市污水厂的产物污泥大量增加,由于污泥的含水率高,容量大,给堆放、运输、储存、利用等带来很多麻烦,污泥处置的减量化、稳定化、无害化、资源化越来越得     

Development in Information and Communications Technology (ICT) Statistics at the Australian Bureau of Statistics

This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field.     

Value at Risk in the Suburbs: Eminent Domain and the Geographical Politics of the US Foreclosure Crisis

Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.     

Towards a Theory of Serendipity: A Systematic Review and Conceptualization

Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.     

Accountability of NGOs in Bangladesh A critical overview

NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.     

Towards an Asian model of human resource management? A comparative analysis of China,Japan and South Korea

There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.     

The Creation of the Office for National Statistics

A new Office for National Statistics was created in the United Kingdom in 1996 following a series of developments designed to strengthen the relevance and integrity of statistics. This paper describes these fundamental changes and sets out a blueprint for future progress. It also sets current developments in the United Kingdom in an historical and international context.     

What helps? Women engineers' accounts of staying on

We have considerable understanding of the obstacles that women engineers encounter and the reasons that they leave the field, but we know less about what enables them to remain. Adopting an interpretivist approach, this article examines how a group of British women engineers in two FTSE 100 companies account for “staying on” in their male‐dominated work settings. We delineate four specific forms of help that facilitate women's retention in the field. We argue that exposure to help leads to women developing a habitus that enables them to continue working in engineering. To conclude, we draw on our findings to outline HR practices that will facilitate supportive relationships in the workplace and pave the way towards developing more positive organisational climates.     

论现代物流企业的发展观

物流业经过诸多年的发展目前已经成为最热门的行业之一,物流企业的注册数量也与日俱增,达到前所未有的规模。毋庸置疑,任何企业都希望自己迅速做强做大,并成为真正现代物流企业的典型代表,要实现这一目标一个首要问题就是要解决现代物流企业的发展观问题。     

浅谈大体积混凝土裂缝的控制

大体积混凝土的裂缝问题是实际工程中长期困扰工程技术人员的问题,其控制技术的研究是混凝土结构研究的热点问题,具有重大的学术价值和潜伏的工程背景。     

Supply Chain Strategies in the UK Fashion Industry—The Rhetoric of Partnership and Realities of Power

This paper focuses on the fashion industry, one characterised by issues such as dramatic shifts in the scale and power of major retail buyers in the market, the advent of retailer own brands, and the nature of sourcing and supply chain decisions, issues that are increasingly global in nature. The aim of this research is to explore the nature of relationships between UK high street multiple fashion retailers and their contracted suppliers, many of whom are entrepreneurial firms by most definitions of the term. Four core themes emerge from the literature and provide a framework for the research, namely, power, process, partnership, and people. The research approach was qualitative, and conducted over a period of twelve months. The paper ends with an agenda for future research.