废易拉罐的回收及再生利用厂的建设

再生铝工业是一棵长青的摇钱树。废易拉罐是一种优质的再生资源，做好其回收与再生利用工作有着巨大的经济效益与社会效益。据笔者的调查与估算，全球再生铝产量在14000kt／a以上，其中中国超过1350kt／a。中国废旧易拉罐的回收率在98％以上，是世界上回收率最高的国家，全球的平均回收率约58％。2006年以后中国可生产有国际市场竞争力的罐料，届时有建设废罐再生利用厂的必要。     

废铝，不可小视的再生资源

在有色金属结构材料中,铝废旧料具有很高的可再生利用性,最大限度地回收废旧铝与充分有效地加以再生利用是建设节约社会与环境友好型社会的重要一环。     

科学发展我国再生铝行业的四点对策意见

文章对科学发展我国再生铝工业提出了四点对策意见,即:①要提高废旧铝资源和熔、铸再生铝的回收率,特别是要重视对废旧铝箔回收的研究;②要研究科学地利用废旧铝资源;③重视环保的科研工作,特别是要加大对废旧铝预处理阶段的环保科技投入;④政府部门要加强科学管理。     

压铸用的再生铝合金

本文论述了压铸合金的物理、化学性能、特点,提出了用废铝生产压铸用的再生铝合金,分析对比了国内外不同牌号的压铸用的再生铝合金的性能、特点,建议合理利用废铝资源,使我国的压铸用再生铝合金标准国际化。     

再生变形铝合金成套技术应用研究

再生铝是我国工业发展中的重要组成部分,其在铝总产量中占比日益提高。再生变形铝合金成套技术的应用有利于优化再生铝过程,提高再生铝质量,降低其中的燃损和污染问题,从而实现绿色可持续的铝工业发展。本文围绕再生铝合金的特性现状进行分析,重点研究了再生变形铝合金成套技术的技术应用和优化策略、技术创新发展以及应用效果两个方面,希望能为相关工作提供一定帮助。     

中国彩涂铝板带行业发展现状分析

正彩涂铝及铝合金板带具有良好的平整、耐蚀、装饰、机械性能,作为新兴材料,近10年来在我国发展极为迅速,正被越来越广泛地运用于建筑装饰、食品封装、电子电器、印刷、交通运输等与人们生活息息相关的领域。本文对中国彩涂铝及铝合金板带材的市场运用、上下游配套产业、工艺技术、装备制造、成本控制、市场缺口等方面进行了综合分析。彩涂铝及铝合金板带(以下简称"彩涂铝板带"),顾名思义就是表面经过涂层着色处理的铝及铝     

稀土在废铝再生铸造铝合金中的应用

本文简述了稀土应用与废铝再生两者结合的重要意义和废杂铝再生铸造铝合金添加稀土新工艺的特点、技术关键操作要点及试验研究结论：分析探讨了稀土铸造铝合金的组成、结构和性能关系以及稀土加入的作用机理；扼要评述了瓣工艺的技术经济效果和推广应用前景。     

云南铝业年产12万吨铝深加工项目开工

日前,云南铝业股份有限公司年产12万吨铝深加丁项目开工建设。该项目主要由“年产8万吨中高强度、宽幅铝合金板带工艺创新与产品开发”和“年产4万吨耐热、高强度铝合金圆杆”两个子项目组成,预计总投资12亿元,建成后可实现年销售收入30亿元。“年产8万吨中高强度、宽幅铝合金板带工艺创新与产品开发”项目的核心设备采用德国西马克得马格公司的高精度2300mm六辊CVC冷轧机,生产线装机水平处于国内领先、国际先进。产品定位为优质铝箔坯料、高档建筑用铝幕墙板、PS版及铝塑带材、铝及铝合金板材等市场前景广阔,     

先进的再生铝及铝合金熔炼设备

本文对我国再生铝工业的现状进行了简要说明，重点介绍了国外先进的再生铝及铝合金熔炼设备，指出引进和开发先进的再生铝及铝合金熔炼设备已是当务之急。     

2004年上海铝行业全线飘红

上海共有29家铝企业，2004年铝材总产量为244615．82吨，与2003年相比增长了17％。其中，铝板带为30526．30吨，箔材为30598．20吨，型材为26173吨，再生铝合金157333吨。在板带箔生产方面，除个别公司之外，大多数公司生产均有较大幅度增长。例如：华源铝业增长65．6％，萨帕增长30．75％，申嘉增长19．82％，天地增长16．69％，     

湘钢配用罗布河矿的烧结试验

对罗布河矿的烧结特性及烧结规律进行了研究,针对湘钢的原料条件进行了配加该矿的烧结杯试验及工业试验。结果表明:罗布河矿烧结性能较差,随其配比增加,应适当提高混合料水分和焦粉配比,从而保证烧结矿转鼓强度和利用系数。罗布河矿配比每增加5%,烧结矿品位下降0.2%,SiO2上升0.08%,Al2O3也增加,同时,FeO含量提高,烧结矿强度指标有所改善,但烧结矿显微结构较差。因此,在应用中需综合考虑烧结矿品位、Al2O3含量及强度指标对高炉生产的影响。     

Numerical Study on Ice Transport in Vicinity of Niagara River Hydropower Intakes

Winter operation of the New York Power Authority's and Ontario Hydro's hydropower generating stations on the Niagara River is affected by the possibility that ice jams might occur in the vicinity of the hydropower plant intakes. In this study, a two dimensional numerical model was used to study the ice transport and jamming processes in the vicinity of hydropower intakes in the upper Niagara River. The model was also used to analyze the effectiveness of several possible structural and operational measures that might be used to mitigate the occurrence of ice jams and improve winter power production.     

城镇污水处理厂出水对黄河水质影响预测

文章以包头市某城镇污水处理厂为项目背景,选择国家"十二五"期间实施总量控制的污染物CODcr和氨氮为预测因子,预测分析污水处理厂运行后其排水对受纳地表水——黄河的环境影响,从而分析受纳水体的环境承载能力。     

In Situ Size Distribution of Suspended Particles in the Fraser River

Size distributions of suspended sediment particles under low flow conditions in the Fraser River were measured using a submersible laser instrument. By comparing the in situ size distribution measured using this instrument with the size distribution of primary particles (measured by collecting sediment samples and analyzing them for size distribution after dispersing the particles by ultrasonic vibration), it was concluded that suspended sediment particles in the Fraser River downstream of pulp mill effluent outfalls are transported as agglomerations of particles (flocs) rather than as individual particles. Flocculation of river sediments in estuaries has been investigated in earlier studies, which show that saltwater intrusion contributes to the flocculation mechanism. Freshwater flocculation, such as the one observed in the present study, also has been reported in the literature, and it is attributed to the presence of organic materials and other contaminants from industrial and sewage treatment plant effluents. This paper describes the details of the submersible laser instrument and its use in the Fraser River, British Columbia, Canada.     

Removal of Antibiotics from Surface and Distilled Water in Conventional Water Treatment Processes

Conventional drinking water treatment processes were evaluated under typical water treatment plant conditions to determine their effectiveness in the removal of seven common antibiotics: carbadox, sulfachlorpyridazine, sulfadimethoxine, sulfamerazine, sulfamethazine, sulfathiazole, and trimethoprim. Experiments were conducted using synthetic solutions prepared by spiking both distilled/deionized water and Missouri River water with the studied compounds. Sorption on Calgon WPH powdered activated carbon, reverse osmosis, and oxidation with chlorine and ozone under typical plant conditions were all shown to be effective in removing the studied antibiotics. Conversely, coagulation/flocculation/sedimentation with alum and iron salts, excess lime/soda ash softening, ultraviolet irradiation at disinfection dosages, and ion exchange were all relatively ineffective methods of antibiotic removal. This study shows that the studied antibiotics could be effectively removed using processes already in use in many water treatment plants. Additional work is needed on by-product formation and the removal of other classes of antibiotics.     

钢铁企业生产污水处理回用工艺探究

马钢（合肥）钢铁有限公司总排口污水处理厂是用于处理厂区排入南淝河的污水,水源于炼铁区和钢轧区的生产排污水,处理后出水全部回用,节约了水资源,减少了对环境的污染。     

莲麓一级水电站枢纽导流设计

莲麓一级水电站工程区位于甘肃省西南部渭源、康乐两县交界处的洮河干流上,为无调节河床式水电站,电站总装机容量66 MW。施工导流设计结合工程总体布置采用两期导流,一期利用先期完建后的左侧明渠泄流;二期利用一期建成的三孔泄冲闸泄流的导流方式。坝址两岸岸坡陡峻,相对河床内分期导流而言,河谷狭窄,可以利用的施工场地不足,加之基础砂卵石覆盖厚达8~16 m。导流设计是施工组织设计的重点和难点。采用复合型围堰和多种防渗措施,有效控制渗流,大大节约投资。     

塔里木河下游土壤水分和地下水位变化对植被的影响

Based on data collected over five years of monitoring the Lower Tarim River, we analyzed the variability of soil moisture content (SMC) and the relationship between SMC,groundwater table depth (GWD) and vegetation by using the methods of coefficient of variation (Cv), Pearson correlation and regression. The results of the variability of SMC indicate that it rose with increase in depth of soil layer - SMC in the soil layer of 0-60 cm was relatively small compared to SMC in the soil layer of 100-260 cm which showed a significant increase in variability. SMC and GWD before and after ecological water diversions exhibited significant differences at the site of the Yingsu transect and its vicinity of the watercourse,especially SMC in the soil layer of 100-260 cm increased significantly with a significant rise of GWD and reached maximum values at a GWD of about 4 m. Plant coverage and species diversity significantly improved with increases in SMC in the soil layer of 100-260 cm, both of them approached the maximum values and 92.3% of major plant species were able to grow when SMC was ＞ 10%. To restore the ecosystem of desert riparian forest along the Lower Tarim River, the GWD must be maintained at ＜ 4 m in the vicinity of the watercourse and at about 4 m for the rest of this arid region.     

Biodegradation of metal-EDTA complexes by an enriched microbial population

A mixed culture utilizing EDTA as the sole carbon source was isolated from a mixed inoculum of water from the River Mersey (United Kingdom) and sludge from an industrial effluent treatment plant. Fourteen component organisms were isolated from the culture, including representatives of the genera Methylobacterium, Variovorax, Enterobacter, Aureobacterium, and Bacillus. The mixed culture biodegraded metal-EDTA complexes slowly; the biodegradability was in the order Fe > Cu > Co > Ni > Cd. By incorporation of inorganic phosphate into the medium as a precipitant ligand, heavy metals were removed in parallel to EDTA degradation. The mixed culture also utilized a number of possible EDTA degradation intermediates as carbon sources.