振打扁形滤袋除尘器的创新及经济适用性

介绍了高效振打扁形滤袋除尘器的独有优势,并通过与现在广泛使用的脉冲反吹圆袋除尘器对比,指出振打扁形滤袋除尘器占地少、清灰和运行耗能低,各项技术经济指标先进。     

公共英语与职业英语教学衔接的调研分析

目前,高职高专院校在高职英语教育方面存在着一些突出的问题,学校教育与企业对学生英语水平的要求相差很远,教学的实效性不强,高职英语课程与其他课程脱节情况严重。以河北建材职业技术学院的省级示范专业——材料工程技术专业为例,通过用人单位的反馈信息,就当前高职英语教学及课程的开发等情况进行了分析和总结,以促进高职高专教育和高职英语教学工作。     

臭氧氧化预处理难降解农药废水的研究

采用臭氧氧化技术预处理脲类农药生产废水,调节废水pH至弱碱,在此基础上考察废水臭氧氧化预处理的影响因素,得出最佳预处理条件：COD为200 mg/L,初始pH为11.3,臭氧投加量为14.2 mg/L。连续预处理180 min后,可生化性从0.12提高到0.58,说明该项技术可大大提高脲类农药废水的可生化性。     

A critical review of hydrological data collection for assessing preservation risk for urban waterlogged archaeology: A case study from the City of York, UK

Environmental change caused by urban development, possibly augmented by climate change, may result in accelerated decay of in situ archaeological resources. Damage may be related to changes in hydrological processes. Such archaeological resources have to be considered in environmental planning. In this paper we highlight the need for improved hydrological data from urban archaeological sites using the case study of the City of York, UK, arguably one of the most well studied and well preserved urban archaeological environments globally. We suggest that the quality of hydrological data collected during routine surveys and experimental work must be improved and standardised in order for us to produce reliable archaeological risk models for urban sites.     

木屑生物炭在雨水径流中的氮磷淋出和吸附特性

现阶段生物滞留系统的填料存在氮磷营养素淋出及吸附净化效果不稳定的问题.为评估木屑生物炭作为生物滞留系统过滤层填料的可行性,选用传统填料（椰糠、堆肥、陶粒和火山石）作为对比材料,通过理化性质测试、批量淋洗实验、等温吸附和解吸实验,研究木屑生物炭的基本性质、淋出特性和吸附特性,探究木屑生物炭对生物滞留系统的优化效果与改良机制.结果表明,经高温热解生成的木屑生物炭具有疏松和多孔的特性,饱和含水率为195.65%,持水效果好;热解后木屑生物炭表面的氮磷元素转换为稳定的化合物,在批量淋洗实验中其氮素淋出量低、淋出速度快,磷素淋出滞缓但在人造雨水径流的淋洗中保持线型负值增长,吸附效果稳定;在典型雨水径流浓度（2mg·L^-1的NH₄⁺及2mg·L^-1的PO₄^3-）下,木屑生物炭可吸附34.6mg·kg^-1的NH₄⁺和59.5mg·kg^-1的PO₄^3-,具有突出的综合吸附能力;NH₄⁺及PO₄^3-吸附平衡后的木屑生物炭在去离子水中的平均解吸率为21.23%和17.43%,吸附效果稳定.综上所述,木屑生物炭的施用可解决填料营养盐过剩淋出的问题,且具有较好的氮磷吸附效果,可用作生物滞留系统的填料解决雨水径流污染问题.     

关于循环经济几个问题的分析研究

粗略地估算了我国单位GDP的环境负荷在21世纪中叶以前需要降低的倍数;讨论了工业物质在3个不同层面上的循环,以及对于这3种循环需要给予同样关注的问题;指出了在大循环中工业物质的分类;分析了在经济高速增长情况下依靠大循环提高资源效率的有限性;说明了生态工业园(中循环)要向大循环方面拓展的看法;提出了深入研究企业内部物质循环(小循环)的必要性和可行性.      

资源化利用废泥生产建材的现状与展望

对近年来废泥建材化研究与应用进行了陈述、分析、总结和展望。发现淤泥、污泥、工业渣泥能够制造出性能优异的陶粒、砖、水泥;废泥生产建筑材料要按照性能测试分析、掺料掺量确定、工艺及参数确定、室内试验、中试试验、投入生产的顺序依次进行;废泥烧结建材时重金属在烧结后活性可能增强,添加水玻璃后可降低其活性;利用海港航道疏浚海淤泥烧结砖或陶粒除盐技术至关重要,已有多种技术可供参考;未来应研究废泥生产建材技术的环境影响及相应补救措施,启动和推进标准、工法的编制,加强技术和产业鼓励政策的宣传,引导和监管技术的规范化运营。     

电石渣的资源化利用

电石渣是工业废渣,其大量排放和堆积影响环境,也限制了企业的发展。介绍电石渣在建筑材料、化工生产、三废处理等行业中的资源化现状,针对电石渣利用量的局限性,高掺量高附加值电石渣砖的制备为电石渣的大量资源化利用的可行性,奠定了一定的基础。     

环境多相催化研究过程中的表面科学研究方法

简要介绍环境多相催化研究过程中应用表面科学的研究方法的必要性和将会遇到的挑战和机遇 .结合作者有关的研究事例 ,分别讨论了环境多相催化和表面科学研究领域之间材料和压力的差异所带来的问题和可能的解决方案 ,特别是催化剂原位表面表征的重要性     

Mineral materials as feasible amendments to stabilize heavy metals in polluted urban soils

Four minerals, agricultural limestone (AL), rock phosphate (RP), palygorskite (PG), and calcium magnesium phosphate (CMP), were evaluated by means of chemical fractions of heavy metals in soils and concentrations of heavy metals in leachates from columns to determine their ability to stabilize heavy metals in polluted urban soils. Two urban soils (calcareous soil and acidic soil) polluted with cadmium, copper, zinc and lead were selected and amended in the laboratory with the mineral materials) for 12 months. Results indicated that application of the mineral materials reduced exchangeable metals in the sequence of Pb, Cd > Cu > Zn. The reduction of exchangeable fraction of heavy metals in the soils amended with di erent mineral materials followed the sequence of CMP, PG > AL > RP. Reductions of heavy metals leached were based on comparison with cumulative totals of heavy metals eluted through 12 pore volumes from an untreated soil. The reductions of the metals eluted from the calcareous soil amended with the RP, AL, PG and CMP were 1.98%, 38.89%, 64.81% and 75.93% for Cd, 8.51%, 40.42%, 60.64% and 55.32% for Cu, 1.76%, 52.94%, 70.00% and 74.12% for Pb, and 28.42%, 52.74%, 64.38% and 49.66% for Zn. Those from the acidic soil amended with the CMP, PG, AL, and RP were 25.65%, 68.06%, 78.01% and 79.06% for Cd, 26.56%, 49.64%, 43.40% and 34.68% for Cu, 44.44%, 33.32%, 61.11% and 69.44% for Pb, and 18.46%, 43.77%, 41.98% and 40.68% for Zn. The CMP and PG treatments were superior to the AL and RP for stabilizing heavy metals in the polluted urban soils.