综合调水前后苏州河下游水体耗氧特性比较

对综合调水前后的苏州河（北新泾下游）水体耗氧特性进行了定性与定量比较。结果表明，综合调水工程全面实施后，苏州河下游水体的还原性物质耗氧阶段消失，单位水体耗氧量大幅度下降，但难降解有机物阶段的耗氧量仍较高。耗氧动力学模拟计算表明，CBOD耗氧一级反应动力学速率常数（K）在综合调水前后变化不大，而硝化耗氧Logistic动力学速率常数（Kn-log)则明显提高。     

选矿废水悬浮物特征及其分级过滤处理工艺

铁矿石磨矿过程中,矿物过份粉碎,在浓缩过程中形成溢流悬浮物,造成对环境的污染。本文介绍了悬浮物的粒度、化学组成等特征,分析悬浮物产生的原因,并概述处理回收溢流悬浮物的工艺实践。     

Environmental impacts of building materials and building services components for commercial buildings in Hong Kong

The growing concerns over the environmental impacts of buildings have led to increasing demands for more environmental friendly buildings and building materials. Hitherto, there are not any comprehensive studies that show the overall environmental impact profiles of building materials and building services components for buildings. This paper intends to bridge this gap by reporting overall lifecycle environmental profiles of buildings as well as the ranking orders of environmental impacts of all the building materials and building services materials and components for commercial buildings. Twenty-five commercial buildings in Hong Kong, which include three Grade A office buildings, four Grade B office buildings, one Grade C office buildings, four retail centers and three hotels, have been selected for our study. Based upon these collected samples, no statistical differences were found in the average lifecycle environmental impacts for different building types despite some minor variations were detected. Subsequently, 10 types of building materials and 10 types of building services components have been identified for their significant lifecycle environmental impacts on commercial buildings. Among all, concrete, reinforcement bar, copper power cables, and copper busbars were ranked to be the four most significant materials or components to the total lifecycle environmental impacts. These should form the major targets for improvements in environmental performance of commercial buildings.     

利用磷石膏生产陶瓷装饰材料

利用磷石膏为主要原材料，加入适当外加剂制成的磷石膏陶瓷材料，性能优良，抗压强度达８０ＭＰａ以上，外观色彩美丽，配方中磷石膏占６０％￣８０％。     

生物反应器填埋场临时覆盖材料的选择探讨

生物反应器填埋场要求临时覆盖材料具有较强的渗透能力和一定的均衡回灌渗滤液流动的能力。通过比较,认为生物反应器填埋场在运营前期宜采用粉质砂土、黄土或轻亚粘土作临时覆盖材料,后期采用稳定垃圾分选的细粒物作临时覆盖材料,在雨季时还可配合使用塑料布防止过多的降水进入场内。     

新型PHBV吸油材料与传统聚丙烯吸油材料的性能比较研究

对以完全生物降解PHVB（β－羟基丁酸和β－羟基戊酸的共聚体）为基材采用不同方法制备的几种材料的吸油性能与常用聚丙烯吸油毡做了对比实验研究并初步探讨了其吸油机理。实验结果表明，成型后的PHBV的吸油速率、吸油率等指标均已接近聚丙烯吸油毡，而保油性优于聚丙烯吸油毡。     

建筑材料放射性的控制

通过对建筑材料放射性污染状况分析，指出建筑材料放射性与其生产原料来源直接相关；并与其生产工艺及建筑物高度和结构有关。     

中国原油的地球化学特征——兼论中国原油的有机与无机来源

中国大庆、辽河、大港、新疆等油区原油的地球化学组成显示以下特征 :含有地壳稀少而地球深部丰富的元素 ,如Re、In、Cd、Ag、Au等 ;含有生物质平均成分不见的元素 ,如Be、Ga、Zr、Nb、Sb、Te、Hf、Ta、W、Tl、Bi、Th等 ;含有较多的亲石元素 ,如Ca、Mg、K、Na、V、Li、Be、B、Ti、Cr、Mn、Rb、Sr、Y、Zr、Nb、Cs、Ba、Hf、Ta、W、Th、U等 ;原油的正烷烃结构具有奇偶优势与不显奇偶优势的特征 ,不显奇偶优势的原油沿基底断裂分布。地球化学特征是矿产资源形成途径的示踪标志。中国原油中含有生物质中不见的元素 ,说明原油可能有来自非生物成因的油源 ;含有地壳稀少而地球深部丰富的元素 ,说明原油可能有来自地球深部成因的油源 ;含有较多的亲石元素 ,说明原油可能不是从生油岩中排出的 ,而是从非岩石结构的地球深部流体中分异后聚集在岩石结构的孔隙中而形成油层的。原油的正烷烃结构显示的奇偶优势被认为系生物成因的油源 ,而不显奇偶优势被认为是甲烷石油 (即来自地球深部的无机成因油源 ) ,不显奇偶优势的油样均沿基底断裂分布 ,正旁证了地球深部来源的可能性。     

焚化炉烟气中恶臭物质分析

根据焚化炉烟气成份复杂的特点,采用不同的采样方法,采集了龙华殡仪馆焚化炉烟气样,并以不同的分析方法分析了烟气中的氨、硫化氢、三甲胺、硫氧化物及氮氧化物等物质的浓度:比较了新旧焚化炉及新焚化炉与日本焚化炉烟气中恶臭物质的浓度。     

MATERIALS INPUT OF LAKE CHAMPLAIN: A SYNOPTIC APPRAISAL1

ABSTRACT: The complex morphometry of Lake Champlain requires that detailed, regional studies be made, and the results integrated, to yield total lake conditions. Using specific conductance measurements, and values of total dissolved solids calculated from them, we present an approach to assessing the materials budget of the lake. The sampling program involved inventorying all 319 tributaries, determining the watershed area for each, and dividing the Champlain basin into appropriate hydrographic regions. Data were obtained from samples collected from 41 selected streams (representing 97.5% of the annual water input), sampling occurring in all seasons of the year since 1970. Results indicate that over one million metric tonnes of total dissolved solids enter Lake Champlain annually, about two-thirds (63%) from the eastern (Vermont) portion and almost one-fourth (22%) from the western (New York) part of the drainage basin, the remainder (15%) entering from the south end. Of the total quantity added annually, 17.4% is retained in the lake, indicating that a solids build-up is occurring, at a significant rate. We suggest that specific conductance, and therefore total dissolved solids, be utilized as a convenient indicator of water quality conditions, and results applied to permit more efficient watershed management.