共查询到18条相似文献,搜索用时 203 毫秒
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污泥是城市污水处理厂的处理副产物,污泥堆肥的土地利用是污泥处置和资源化利用的最经济可行的方式,被许多国家广泛采用,由于近年来污泥产量不断增大。污泥堆肥的应用范围也在增大,为保护生态环境,对污泥稳定化和无害化处理的资源化利用已成为当务之急。 相似文献
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随着污水处理量的增加,污泥的产量也将随之增多,污泥的处理越来越引起人们的关注。目前许多国家将污泥堆肥作为污泥稳定化处理的主要方法。综述了国内外污泥堆肥化技术研究的最新进展,并提出了今后研究的主攻方向。 相似文献
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模拟污泥好氧堆肥系统,将本实验室筛选所得嗜热高效降解复合菌F12,按投加量2%、5%及10%投加至堆肥体系中,研究该复合菌合适的堆肥接种量及对堆体的降解特性。结果表明,投加量为5%时堆肥效果最好,接种复合菌可提高堆体温度、延长堆肥高温期,实验组高温期可维持4 d,较对照组的1 d效果显著;与对照组相比含水率下降较多,相差5.7%;接种该复合菌有助于有机质的降解,7 d降解率与对照组的差值为3%。pH和氨气含量的变化反映了接种有利于有机质代谢,但对堆肥的保氮效果较差,堆肥产品农用质量下降,需进一步做这方面的研究;三种接种比例实验组的细菌、真菌及放线菌数量均大于对照组,外源接种给堆体带来更多微生物,加速了有机质的降解。 相似文献
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目前,许多中小城镇污水处理处理厂投入运行后,面临着产出的污泥处理处置的新问题。如何在建设资金、运行经费不足的情况下,实现污泥的无害化、减量化、稳定化,能够做到资源化利用,也是我们要深入研究的新课题。本文对中小城镇污水处理厂的污泥处理处置及资源化利用进行了阐述,提出了"太阳能自然干化+好氧堆肥发酵+造粒烘干制肥"的工艺,与其他污泥处置工艺相比,具有投入建设资金少、节省运行经费、生产管理简单、产生经济效益等特点,以10万吨/日规模的城镇污水处理厂为例,污泥处置设施建设费用估计900多万元,建成投产后可年产有机复合肥10000吨,实现了化害为利、变废为宝,为中小污水处理厂的污泥处理处置和资源化利用提供了出路。 相似文献
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随着城市化进程的不断加快和人们生活水平的不断提高,城镇污染问题也日益加重,在城镇污水处理中产生的大量污泥也成为了污水处理厂面临的一大问题。如何将污泥进行科学合理地处理,使其得到有效利用,是城镇居民广泛关注的问题,也是污水处理厂应当着重解决的问题。本文通过分析城镇污泥处理的现状及其存在的问题,提出了几点污泥处理的有效措施,希望能对有效处理污泥、提高污泥利用率、减少环境污染起到一定的帮助作用。 相似文献
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This exploratory study focuses on processes of food purchases, food habits and waste management in the household. The purpose of the study has been to investigate what influences the amount and type of waste generated in the household. Information was collected in 13 households in a residential area close to central Göteborg, Sweden, where a separation of waste and local composting experiment had just been launched. The households registered purchases, meals served, and weight of biodegradable waste, for 2 weeks. In-depth interviews were also carried out. At a general level, environmental concern was found not to influence purchase behaviour. The results show that the households produced a higher level of biodegradable than non-biodegradable waste. Variations between families were found to be considerable. There are clear indications that the experience of participation in the experiment which required local composting per se was a very powerful determinant for increasing the awareness in families of the relationship between consumption and the nature and quantity of waste produced. 相似文献
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聚合氯化铝是目前最广泛使用的高效混凝剂,它具有用量少、污泥少、除浊高,对出水pH影响小等优点。聚合氯化铝是一系列介于Al^3+和氢氧化铝之问聚合物的复合体,对于何种物种能起到决定性的混凝效果,目前尚没有公认的结论。通过对不同生产工艺得到的商品聚合氯化铝进行聚合物种类的研究,并结合混凝实验,发现高分子聚合氯化铝对混凝效果发挥了更大的作用。 相似文献
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通过对剩余污泥利用的现状和利用过程中存在问题的分析,指出污泥再利用在处理工艺和新型反应器研究方面的新进展,提出污泥资源化的重点应放在农业利用及材料化和能源化利用上。 相似文献
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Business analytics is a revolution that is impossible to miss. At its core, business analytics is about leveraging value from data. Instead of being referred to as the ‘sludge of the information age,’ data has recently been deemed ‘the new oil.’ While data can be employed for purposes such as detecting new opportunities, identifying market niches, and developing new products and services, it is also notoriously amorphous and hard to extract value from. In this Guest Editors’ Perspective, we first present a structural framework for deriving value from business analytics. Extracting value from data requires aligning strategy and desirable behaviors to business performance management in conjunction with analytic tasks and capabilities. We then introduce three special articles that provide in-depth insights regarding how business analytics is being employed in the management of healthcare, accounting, and supply chains. 相似文献
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Towards sound environmental behaviour: Exploring household participation in waste management 总被引:2,自引:0,他引:2
The article reports a study of household participation in waste management. The empirical material stems from a long-term experiment with local composting carried out in a suburb of the city of Göteborg, Sweden. Fifty-two households of a population of 180 voluntarily participated in the field experiment where three makes of compostors were tested. The aim of the paper is to shed light on some critical factors that are of importance when introducing and evaluating new waste management systems that rely on active participation by households. The motives behind the initial decision to participate, as well as factors influencing continuation or discontinuation, are identified and analysed. Data were collected through three interviews carried out in the homes of participating families during the experimental period of one year. Amongst the results reported it can be seen that a general environmental concern was a common factor behind the decision to participate in the project. The positive attitude towards composting was strong throughout the experiment, although composting behaviour in the implementation phase declined in such a way that less material was composted due to lack of knowledge, technical misfits, and problems related to internal household dynamics. Another important result found was that the obstacles perceived by prospective participants prior to the commencement of the composting were not those that in fact proved to be decisive.
Helena Åberg is doctoral candidate and Helena Shanahan is associate professor at the Department of Hand Craft and Home Economics at the University of Göteborg, Box 12204, S-402 42 Göteborg, Sweden. Sven Dahlman is associate professor at the Department of Consumer Technology at Chalmers University of Technology, Göteborg. Roger Säjö is professor at the Department of Communication Studies, Linköping University, S. 581 85, Linköping, Sweden.The research reported here was financed by the Swedish Council for Building Research, the REFORSK Foundation, the Swedish Association of Housing Companies, and the National Board for Consumer Policies. 相似文献
In Richtung auf umweltverträgliches Verhalten: Die Untersuchung der Beteiligung von Haushalten an Abfalltrennung und Müllvermeidung
Zusammenfassung Das empirische Material der Studie, über die der Beitrag berichtet, stammt aus einer Langzeituntersuchung in einem Stadtteil von Göteborg in Schweden, bei der es um lokale Kompostierung von Müll ging. 52 Haushalte aus einer Population von 180 Haushalten nahmen freiwillig an einem Feldexperiment teil, bei dem drei verschiedene Fabrikate von Kompostieren verglichen wurden.Der Beitrag möchte einige kritische Faktoren beleuchten, die bei der Einführung und Evaluierung solcher Müllsysteme von Bedeutung sind, die die aktive Teilnahme der Haushalte voraussetzen. Analysiert werden die Motive zu einer solchen Teilnahme ebenso wie die Faktoren, die gegebenenfalls einen Abbruch der Teilnahme bewirken. Die Datenerhebung erfolgte durch drei Interviews, die in den Haushalten der teilnehmenden Familien während der Untersuchungsdauer von einem Jahr durchgeführt wurden.Zu den Ergebnissen gehört der Befund, daß ein allgemeines Umweltbewußtsein ein allgemeiner Faktor ist, der hinter der Entscheidung, am Projekt teilzunehmen, seht. Von Bedeutung ist ebenfalls eine positive Einstellung gegenüber dem Kompostieren, obwohl das Kompostierungsverhalten während der Untersuchungsphase aus mehreren Gründen nachließ, unter anderem wegen Wissensmängeln, wegen technischer Pannen oder interner Haushaltsprobleme. Ein anderes wesentliches Ergebnis war, daß die Hindernisse, die die prospektiven Teilnehmer vor dem Beginn der Kompostierung zu erkennen glaubten, nicht die waren, die sich als entscheidend herausstellten.
Helena Åberg is doctoral candidate and Helena Shanahan is associate professor at the Department of Hand Craft and Home Economics at the University of Göteborg, Box 12204, S-402 42 Göteborg, Sweden. Sven Dahlman is associate professor at the Department of Consumer Technology at Chalmers University of Technology, Göteborg. Roger Säjö is professor at the Department of Communication Studies, Linköping University, S. 581 85, Linköping, Sweden.The research reported here was financed by the Swedish Council for Building Research, the REFORSK Foundation, the Swedish Association of Housing Companies, and the National Board for Consumer Policies. 相似文献
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