共查询到19条相似文献,搜索用时 218 毫秒
1.
我国污水污泥处理处置及综合利用以最终安全处置为目标,鼓励多种形式的综合利用;鼓励污泥资源和能源的回收利用,在污泥处理处置方式选取方面,应根据污泥量、污泥性质和特点、当地的经济发展水平和污水处理厂技术、消纳途径和能力等实际情况,确定最佳的污泥最终处置或综合利用方式。 相似文献
2.
3.
城市污泥是污水处理厂处理污水过程中所产生的絮状泥粒废弃物,是污水处理厂不可避免的副产物.污泥中含有病原菌、寄生虫(卵)、有毒有机物、重金属,同时含有大量的氮、磷、钾等营养物质以及微量元素等成分,其中以氮含量尤为丰富.可见,城市污泥既含有污染环境且有毒有害的物质,同时又含有诸多有用物质,这使得城市污泥具有很高的利用价值.因此,如何使城市污泥变废为宝呢?遵循避免二次污染和稳定化是污泥资源再利用的技术准则. 相似文献
4.
5.
"十一五"期间,在国家政策引导和资金支持下,河北省城镇污水处理厂建设快速发展,随之而来的是污泥产生量的急剧增加,但是,污泥处理处置却严重滞后.城镇污水处理厂污泥的化学需氧量(COD)和重金属含量分别占污水总量的50% ~60%,污泥在堆放及处理过程产生的沼气中甲烷含量为60%~65%,其温室效应为二氧化碳的20多倍.污泥造成的直接污染或由于处理处置不当造成的二次污染成为继废气、污水、垃圾之后又一群众反映强烈、政府高度关注的环境问题和社会问题.为此,国家环保部于2010年11月下发了《关于加强城镇污水处理厂污泥污染防治工作的通知》,发改委和建设部也于2011年3月联合下发了《关于进一步加强污泥处理处置工作组织实施示范项目的通知》,有关方面表示要"千方百计将污泥处理处置搞好",污泥处理处置及污染防治将成为"十二五"时期城镇基础设施建设和环境保护工作的重点. 相似文献
6.
介绍活性污泥法的基本特点和回流污泥强化技术的重要性,对目前回流污泥强化技术的措施以及存在的问题进行阐述,并指出研究新型回流污泥强化技术的方向。 相似文献
7.
8.
一、我国污泥处理发展的背景截至2010年9月,我国已建成城镇污水处理厂2630座,日污水处理能力1.22亿立方米,在建污水处理厂1849座,预计日污水处理能力4900万立方米。与污水处理工程高速建设的情况不同,我国污泥处理事业尚处于基础阶段。随着我国城市化进程的加快和环境质量标准的提高,污水处理率和处理程度逐年 相似文献
9.
陈彬 《大江周刊.城市生活》2012,(8)
城市污水厂的污泥含有大量的有机物、氮磷等营养物、重金属以及致病菌和病原菌等,如果不加处理的任意排放和投弃会对环境造成严重的污染。文中通过对污泥几种主要处置方式的分析,指出污泥的资源化利用应立足于各地实际,在兼顾环境生态效益、社会效益和经济效益平衡的前提下,选择最佳处置与利用的方案。 相似文献
10.
对固定化微生物技术净化有机废水最佳方法的探讨 总被引:4,自引:0,他引:4
该文探讨了采用固定化微生物技术净化高浓度有机废水的多种方法,阐明各种固定化方法的各自所长。并指出包埋法是相对较好的一种方法,试验证明,海藻酸钙包埋法与戊二醛交联剂联用,效果更好,不仅使用周期延长,机械强度明显增大,而且其生物污泥脱氢酶活力相对稳定,有利于废水生物处理领域的推广应用。 相似文献
11.
介绍活性污泥的组成与分解污染物的能力。分析了好氧活性污泥法处理城市污水中的各项运行参数,并阐述了在不同的状态和条件下如何调整运行参数。 相似文献
12.
This paper examines the problem of decisions about the disposal of sewage sludge, in the face of stakeholder groups with varying viewpoints, based on a current case from the state of Lower Saxony in Germany. Like other developed countries, Germany faces the dilemma that sludge arisings are increasing (e.g., because of better water treatment) while disposal options are becoming more scarce. Lower Saxony relies heavily on landfill and agricultural application, but landfill of untreated sludge will be banned after 2005. The state Environment Ministry sees agricultural application as having various advantages, but it faces scepticism from various stakeholders. The ministry has therefore taken steps to encourage a long-term dialogue process with the main stakeholders, including farming organizations, food processors, other landowners such as the churches, and environmental and consumer organizations. The process began with a discussion forum in 1995 that led to the proposal of specific discussions with stakeholders. This paper focuses in particular on the dialogue with environmental and consumer groups. It analyzes the initial positions of the various stakeholders, describes the concrete steps taken so far, describes the ongoing efforts, and critically evaluates the procedures used as well as their implications in terms of the ideas of deliberation and analysis. 相似文献
13.
Marie d'ArcimolesOlivier Borraz 《Sociologie du Travail》2003,45(1):45-62
The history of urban sewage sludge, a matter of much confusion and mobilization, illustrates the impact of controversies about farming. It also casts light on the significance of new themes and on questions about the French “co-management” model. Above all, it helps us analyze the recourse to new controls that operate outside the sway of public authorities and complete official regulations - in the form either of procedures for labeling quality, which anchor the production and elimination of sludge in a locality, or of procedures that place sludge as an input in the food chain. Such procedures seek to restore confidence and strengthen the commitments made by various parties. They also provide evidence of how farming is changing. - Special issue on Agriculture and food. 相似文献
14.
15.
16.
Stephen Schaffer M.S.W. Jerrold Pollak Ph.D. 《Child and Adolescent Social Work Journal》1987,4(1):41-49
This article addresses the special issues of the interruption and resumption of ten-month day treatment with children. It reviews behavioral and dynamic responses to their changes of treatment status, and the use of positive reframing, as a technique useful to minimize regression and maximize consolidation of treatment gains. 相似文献
18.
P.H. Irwin 《Evaluation and program planning》1981,4(2):123-130
Quality of life assessment is used as an outcome measure technique to evaluate a central medical intake (CMI) unit for drug treatment programs. While significant improvements across time are evident in both perceived well-being and in the standard federal funding criteria, no differences are observed between those referred into treatment by the CMI and those entering directly. Moreover, the improvements observed are the same regardless of whether the patient stayed in treatment or not. 相似文献
19.
水中内分泌干扰物质的研究现状及趋势 总被引:3,自引:0,他引:3
综述了内分泌干扰物质的种类、特点、作用机理、危害,内分泌干扰物质对水源的污染以及水处理工艺对其去除情况,并指出今后的研究方向。 相似文献