广州市郊填埋场附近蔬菜重金属检测与讨论

蔬菜是人们餐桌上必不可少的食物,重金属在受污染的自然环境中又无处不在,而蔬菜中的重金属含量尤其令人担忧。本文使用原子吸收分光光度法(石墨炉)和原子荧光分光光度法检测了广州市郊某垃圾填埋场附近所种植蔬菜中重金属含量。结果:抽样由2013年10月至2014年9月共持续一年,共抽样检测12次,按平均每个月一次的频率,检测结果并未发现有蔬菜超出国家规定的限量值。     

“We are All Refugees”: Camps and Informal Settlements as Converging Spaces of Global Displacements

ABSTRACT

This paper is in conversation with two important bodies of literature: one on informal settlements (informal and insurgent grassroots practices) and another on camps (spatial practices and governance of refugees). Reading inhabitants’ experiences in Korail, an informal settlement in Dhaka, Bangladesh, through the literature grounded in the experiences of refugees, we seek to contribute to the relational theorization of informal settlements and camps as an expanding and overlapping reality in the era of intensified global displacements. Weaving back and forth between the camp literature and Korail’s reality, we bring to light the comparable spatial practices and governance of the so-called citizens and the so-called stateless. We present the insights we gain from this analytical conversation under three organizing themes: experiential to highlight the precarious relationship of the two groups to citizenship and place, what we call a state of “citizenship in wait” and “in-situ displacement”; institutional to highlight the humanitarian matrices of care that provide governmental structures in both contexts; and micropolitical, to characterize dwellers’ contestations with state and humanitarian governance that constitute the processes of life-making in informal settlements, much as in the camps. Conceptually the paper lends a forceful voice to the mounting critiques of the state-centered canon in planning theories and the needed Southern turn in planning theorization. Politically, it lends a hand to the efforts of activists working to overcome exclusions and erasures that are endemic to the politics of citizenship, that pit refugees against the poor, and to gesture toward forging solidarities for a humane urbanism.     

危废填埋场地下水环境影响评价研究

危险废物具有各种危害性,不仅对人体健康有着威胁,对于环境治理来说也有着极大的消极影响。就目前来说,虽然安全填埋技术已经较为成熟,但在实际实施过程中还是容易出现渗漏事故,渗漏液在地下容易穿透防渗层,从而影响地下水,所以这也是我们需要重视的问题之一。     

重庆主城区生活垃圾处理及长生桥卫生填埋场设计小结

介绍重庆市主城区生活垃圾处理方法,长生桥填埋场场址和防渗方案选择、渗滤液收集与调节系统、沼气收集系统的设计.     

灌浆帷幕防渗技术在天子岭生活垃圾卫生填埋场中的应用

介绍杭州市天子岭生活垃圾填埋场的防渗工程,评价灌浆帷幕防渗技术在填埋场的应用效果.十余年运行实践证明,采用以灌浆帷幕为主的垂直防渗措施,防止填埋场渗沥液污染下游地下水的效果明显.但由于灌浆帷幕不可能完全隔离帷幕上、下游地下水的水力联系,因此,对下游地下水可能会造成轻微污染.     

城市垃圾填埋场水泥基防渗浆材的研究

针对垃圾填埋场防治沥出液渗漏的要求，研制了一种水泥基膨润土-粉煤灰-水泥（BFS）防渗浆材，该浆材具有渗透系数低、吸附阻滞性能好的特点。介绍了该浆材的材料及试验研究成果。     

欧盟垃圾填埋导则解读和启示

欧盟的垃圾填埋导则全面反映了欧盟对于垃圾管理的要求和目标,即对于可持续发展和气候变化的关注,并对垃圾管理战略和处理模式、填埋场的建设、运营管理等提出了新的要求。欧盟的垃圾填埋导则给我国垃圾处理的启示是,要从可持续发展的角度制定有关政策和处理一些具体问题,垃圾处理的目标应当是全方位的达标,而不是泛泛的、模糊的无害化。     

垃圾填埋场渗滤液回灌效果的理论研究

基于前人提出的垃圾填埋场渗滤波渗流模型，通过试验初步提出了评价回灌效果的指标和回灌有效期的概念，并分别考察了回灌水质、渗流参数及填埋深度对渗滤液中污染物浓度、微生物浓度和垃圾土中有机质溶解及降解的影响。分析结果表明，回灌能促进渗滤液中COD浓度的降低并加快垃圾土中有机质的降解；提高垃圾土的溶解速度，有利于减少垃圾土的有机质含量，同时不影响COD浓度的稳定；在相同回灌水质下，填埋越深则回灌的效果越不明显。     

A Sludge Disposal Strategy for Dumfries and Galloway Regional Council

The Dumfries and Galloway Regional Council's largely rural statutory area extends to 6370 km², with a population of 146 000. During 1988 the Council, mindful of impending legislation likely to affect existing sludge disposal outlets, particularly those to agricultural land, commissioned a detailed study into all aspects of sewage sludge production, treatment, storage and disposal. The prime aim of the study was the production of a regional sludge disposal strategy. Consideration was given to five different options of sludge disposal.     

土工合成材料在城市固体垃圾填埋场中的应用

对一系列新型化工产品———土工合成材料在城市固体垃圾填埋场中的应用 ,特别对其中土工织物 (GT)、土工膜 (GM)、土工合成材料粘土垫 (GCL)、土工网 (GN)、土工复合材料 (GC)以及土工泡沫 (GF)等在填埋场衬垫、封盖系统中的应用作了全面的总结 ,详尽地分析了各种材料的主要用途