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761.
Current status and research on E-waste issues in Asia 总被引:2,自引:1,他引:2
Atsushi Terazono Shinsuke Murakami Naoya Abe Bulent Inanc Yuichi Moriguchi Shin-ichi Sakai Michikazu Kojima Aya Yoshida Jinhui Li Jianxin Yang Ming H. Wong Amit Jain In-Suk Kim Genandrialine L. Peralta Chun-Chao Lin Thumrongrut Mungcharoen Eric Williams 《Journal of Material Cycles and Waste Management》2006,8(1):1-12
Rapid economic growth in Asia and the increasing transboundary movement of secondary resources will increasingly require both
3R endeavors (reduce, reuse, recycle) in each country and appropriate control of international material cycles. Recently,
managing electrical and electronic waste (E-waste) has become an important target for domestic and international material
cycles from the viewpoints of environmental preservation and resource utilization efficiency. To understand the current status
of E-waste issues in the context of international material cycles and to discuss the future tasks related to achieving 3R
in the region, we organized the National Institute for Environmental Studies (NIES) E-waste Workshop in December 2004. This
article reviews past studies on E-waste and briefly describes the topics presented and discussions held at the workshop. The
topics at the workshop included E-waste generation, recycling systems, international trade, and environmental impacts. In
addition, we discussed various issues such as terminology, current environmental concerns, and possible solutions. Transboundary
shipments of E-waste should be conducted taking into consideration the concept of sustainable development. The direction of
future research and possible collaborations are also discussed. 相似文献
762.
以黄浦江水源水厂的滤后水为试验对象,进行饮用水O3-BAC深度处理工艺影响因素的中试研完。针对进水水质的试验结果表明,最优臭氧投加量为3mg/L左右,空床停留时间为15min左右。试验结果可为工程设计提供有益的参考。 相似文献
763.
含油污泥固化处理后油的迁移研究 总被引:3,自引:0,他引:3
利用紫外分光光度计和索氏抽提器,研究了温度、土壤含水率以及水泥与污泥的不同比例等因素在不同时间对含油污泥固化后油迁移的影响。试验结果表明:对于强度为3.84MPa的污泥固化块,油的迁移量从240h迁移6.8mg变为480h迁移178mg,之后变化较小。在20℃~30℃时,随着温度的增加,迁移量从6.8mg增加到20.6mg,超过30℃以后迁移量的增幅变小。水泥与污泥的比例从1∶0.8增加到1∶1.4,油的迁移量从256mg降到27.2mg,之后未检测到。960h后,迁移量达到348mg,此时土壤中油含量为1.16%,在环境的自净作用下,土壤能完全容纳;强度大于9.56MPa时未检测到油。这表明用固化法处理油田含油污泥是安全可靠的。 相似文献
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今年9至10月份,本市共发生火灾859起,死2人,伤7人,直接财产损失105万余元.与去年同比,除火灾死人持平外,其余三项指标均是下降的,其中火灾次数减少100起,下降10.4%,伤人减少5人,下降41.7%,直接财产损失减少27万元,下降20.5%. 相似文献
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T. D. Blackall M. R. Theobald C. Milford K. J. Hargreaves E. Nemitz L. J. Wilson J. Bull P. J. Bacon K. C. Hamer S. Wanless M. A. Sutton 《Water, Air, & Soil Pollution: Focus》2004,4(6):279-285
Ammonia emissions from two contrasting seabird colonies in Scotland were measured, based on the determination of atmospheric concentrations downwind of the colonies. Atmospheric concentrations of ammonia (NH3) across the downwind plume were compared with the inverse application of a Gaussian dispersion model (ID) to calculate the modelled NH3 emission that would generate the measured cross-wind-integrated plume concentration. In parallel, a tracer gas (sulphur hexafluoride, SF6) was released from the colonies with air samples taken to allow determination of SF6 concentrations. On the basis of the known emission rate of SF6, the magnitude of ammonia emissions was estimated by the cross-wind-integrated tracer ratio (TR) of NH3/SF6 concentrations. Coupled with data on annual bird attendance, the measurements indicate annual emissions from the Isle of May and the Bass Rock of 18 and 132 tonnes NH3-N year–1, respectively. The measured NH3 emissions were compared with estimates of seabird nitrogen excretion to estimate the proportion of excreted N that is volatilised as NH3 (FNr). The emission estimates of the two methods compared favourably, giving 4 and 6 kg NH3-N h–1 (FNr = 15%) for the Isle of May for the ID and TR methods, respectively, and 21 and 25 kg NH3-N h–1 (FNr = 50%) for the Bass Rock for the ID and TR methods, respectively. The results provide the first measurement-based estimates to allow regional up scaling of ammonia emissions from seabirds. 相似文献