利用三种工业废弃物治理印染废水的探讨

用三种工业废弃物：烟道灰、瓦斯灰、铁屑为处理剂处理印染废水的新方法。三种废弃物可组成腐蚀原电池，以电化学作用 主，兼有还原降解脱色，物理吸附和化学吸附等机制处理印染废水，给出了适宜的处理条件。     

布袋除尘器进口烟道气体流动特性的数值分析

通过计算流体软件FLUENT对布袋除尘器进口烟道进行研究,应用k-ε湍流模型对烟道在冬季极端恶劣情况下的强制对流散热的流动特性进行了模拟,详细讨论了不同截面的速度场、温度场、压力等分布。结果表明:低温烟道在不保温的情况下,在进入布袋除尘器前仍具有较高温度;烟道直段的降温速率约为0.2℃/m,弯头较集中区域,降温速率约为0.5℃/m;在出口区域,烟气温度出现"反弹"现象;烟道弯头处的冲刷较严重。     

新常态下电站锅炉深度调峰改造与调试实践

以某电厂330 MW机组为例,介绍了火电机组深度调峰新常态下的锅炉相关技术改造和调试实践.通过对具体深度调峰改造技术路线的分析,确定锅炉增加一层等离子系统和旁路烟道的改造方案,通过改造后的调试,达到了 28％额定负荷的深度调峰目标,总结成功的经验,为机组后续进一步全面完成国家能源改革的任务起到关键作用,也为其他电厂锅炉...     

不同楼梯入口设置方式下人员疏散的模拟研究

针对高层建筑楼梯疏散过程中的汇流行为,采用数值模拟的方法研究了5种不同楼梯间入口设置方式下的人员疏散过程。结果表明:高层建筑的各楼层人员进入楼梯间的疏散时间与楼层符合线性关系;楼梯间入口临近平台上段楼梯比临近下段楼梯更有利于人员的安全疏散,楼梯间入口位于楼梯对面比位于楼梯两侧更有利于人员的安全疏散;楼梯间入口位于平台上段楼梯对面最有效地促进了人员在平台的汇流行为,减少建筑中人员的疏散时间。     

上海世博会交通指南

如何去世博园,这可能是所有想去上海看世博会人最关心的事。乘地铁,上海地铁已经有13条线,哪几条线可以到达世博园区入口？最捷径的入口是在哪个站点？如何换乘？公交直达世博园的有哪几条,上车点都设在哪里？票价多少？想自驾游去看世博会的,车应该停在哪里等等,可以说都是人们最关心的实用指南,以下是本刊编辑部为大家整理的世博会交通指南,希望对要去世博园参观的朋友有所帮助。     

取消旁路后湿法脱硫系统设计方案探讨

国家环保部已明确要求火电脱硫系统取消旁路烟道,脱硫装置已上升至主设备范畴,脱硫系统安全可靠运行直接影响到主体发电机组的连续运行。以实际案例探讨,对于新建及改造脱硫项目应适当提高脱硫系统的设计余量以及提高设备的可靠性,以保证脱硫装置较高的脱硫效率以及投运率。     

新型油烟净化器

目前,国内的油烟净化器主要有静电式和运水烟罩式两个类型,此外还有一些紫外线净化器。无论那一种,都需要耗电或水,而且无法避免烟道中油污的积累,时问一长,很易引起火灾隐患。北京国通环境工程有限公司研制成功一款新型油烟净化器,不但解决了饮食行业烟道积油的难题,节省了清洗费用,而且有效的控制了油烟对环境的污染。     

沉管隧道火灾高温试验炉烟道设计与性能研究

为提高临时性砌筑烟道在沉管隧道高温火灾试验中的可靠性,通过在烟道内设置水喷淋系统,实现对烟道内热烟气有效降温,并基于FDS软件对火灾试验炉进行模拟分析,研究烟道内温度场分布,指导火灾试验炉建造.结果表明:热烟气经过水喷淋后温度降低700℃,水喷淋对热烟气降温效果良好;烟道排烟通畅,无明显开裂、漏烟现象,可满足非永久性火...     

Distribution and contamination status of chromium in surface sediments of northern Kaohsiung Harbor, Taiwan

The distribution, enrichment, accumulation, and potential ecological risk of chromium (Cr) in the surface sediments of northern Kaohsiung Harbor, Taiwan, China were investigated. Sediment samples from ten locations located between the river mouths and harbor entrance of northern Kaohsiung Harbor were collected quarterly in 2011 and characterized for Cr, aluminum, water content, organic matter, total nitrogen, total phosphorous, total grease, and grain size. Results showed that the Cr concentrations varied from 27.0 to 361.9 mg/kg with an average of (113.5±87.0) mg/kg. High Cr concentration was observed near the Jen-Gen River mouth. The mean Cr concentration was high at 255.5 mg/kg, which was at least 2 to 7 times than that of other sites. This might imply significant Cr contribution from upstream receiving tanneries wastewater into the Jen-Gen River. The spatial distribution of Cr reveals relatively high in the river mouth region, especially in Jen-Gen River, and gradually diminishes toward the harbor entrance region. This indicates that the major sources of Cr pollution from upstream industrial and municipal wastewaters discharged along the river bank; and Cr may drift with sea current and be dispersed into open sea. Moreover, Cr concentrations correlated closely to the physical-chemical properties of the sediments, which suggested the influence of industrial and municipal wastewaters discharged from the neighboring industrial parks and river basins. Results from the enrichment factor and geo-accumulation index analyses imply that the Jen-Gen River sediments can be characterized as moderate enrichment and none to medium accumulation of Cr, respectively. However, results of potential ecological risk index indicate that the sediment has low ecological potential risk. The results can provide valuable information to developing future strategies for the management of river mouth and harbor.     

利用电厂粉煤灰处理染料中间体废水

利用电厂粉煤灰，采用吸附法处理难生化降解的染料中间体二硝基氯化苯废水。结果表明，该法处理效果好，ＣＯＤＣｒ和色度去除率都很高，处理水可达标排放。而且此法处理成本大大低于活性炭吸附法。