冷轧废水处理新技术及深度处理回用研究

冷轧废水含污染物多,废水成分复杂,一直以来,冷轧废水都是钢铁企业水处理技术的重点和难点,随着催化氧化、MBR等新工艺的应用,冷轧废水得到了较好的处理,但冷轧废水处理的最终出路还是需进行深度处理回用。对冷轧废水处理的新技术进行了叙述,并在此基础上,对其深度处理回用进行了研究。     

应用膜生物反应器处理焦化废水的试验研究

对膜生物反应器处理焦化废水进行了实验研究。实验以PVDF中空纤维微滤膜作为膜组件，采用缺氧-好氧-缺氧工艺运行。结果表明，采用MBR工艺进行焦化废水生物处理，系统对CODcr和NH3-N的去除均有很好的效果，CODcr的平均去除效率为83．4％，反应器内明显存在NO2-N积累，影响了反应器出水中CODcr浓度。NH3-N的平均去除效率为96．2％，TN的去除效率为77．5％。反应器内可观察到好氧颗粒污泥的存在，在好氧阶段存在同时硝化／反硝化（SND）过程。     

排至自然水体的冷轧废水处理工艺应用

介绍了排至自然水体的冷轧废水处理工艺,综述了冷轧废水中含铬废水、含酸废水、含油废水、平整液废水、稀碱废水的处理方法,对主要问题和功能进行了分析,其处理工艺达到了国内冷轧废水的先进水平。     

冷轧含油废水处理技术研究进展

概述冷轧含油废水油类物质在水中的存在形式和特点,阐述常规轧钢含油废水的各种处理方法,如气浮法、絮凝法、吸附法、膜分离法和生物法,并对各种方法处理冷轧含油废水的优缺点及其发展趋势进行探讨。最后,对膜生物反应器在处理冷轧含油废水的前景进行预测,并提出对工业化处理冷轧含油废水的一些建议和展望。     

不锈钢超滤膜在处理太钢冷轧乳化液废水中的应用

就太钢冷轧含油废水采用最新的不锈钢超滤膜过滤技术处理乳化液废水的工艺设备情况进行了介绍。乳化液废水是冷轧废水中最难处理的废水,其含油量高,有机物含量高,对下游水体污染严重,是冶金工业废水环保外排中急需解决的难题。     

接触氧化池法在鞍钢天铁公司冷轧废水处理系统中的应用

简要叙述了天津鞍钢天铁公司处理冷轧废水的生产工艺,接触氧化池在实际运行过程中出现的问题,通过提高废水的预处理效果、对接触氧化池进行相应的工艺改进、调整工艺参数及运行方式、加强对接触氧化池的污泥指标检测等措施,提高了冷轧废水生化处理效果,改善了出水水质,使接触氧化池法处理冷轧废水达到设计要求,实现了达标排放.     

冷轧废水运行过程中的环境风险管理

冷轧废水是钢铁企业中较难处理的废水之一,具有成分复杂、污染物多、难以处理等特点,可以说是钢铁企业废水管理中的重点之重。以某钢厂3座冷轧废水处理站为例,详细介绍了冷轧废水的处理工艺,并结合废水站运行过程中发生的有关问题,对运行过程中的环境风险进行了分析,并提出或制定了有关措施,从而降低了环境污染风险。     

马钢冷轧废水处理工艺优化及效果

冷轧废水是钢铁企业较难处置的废水,介绍了冷轧几种废水分质处理的工艺及效果,此工艺较好地解决了该类废水处置的难题,保证了废水处理效果,取得了良好的社会效益。     

生物法处理宝钢冷轧含铬废水的研究进展

对宝钢冷轧部几个点的含铬废水中污染物成分进行了取样分析,介绍了用生物法处理各种宝钢冷轧含铬废水的实验室研究的结果、机理和现场中试的进展。研究结果表明,用生物法处理钢铁厂冷轧含铬废水,比传统的化学法对环境保护和提高企业竞争力有更大的优越性,总铬、六价铬去除率可达99%以上,处理后水中总铬低于1．5mg／L,六价铬低于0．5mg／L。     

冷轧废水处理设计的几点看法

分析了冷轧废水产生的来源，说明了冷轧废水在处理工艺选择、水质、水量确定上的困难。通过宝钢工程改造成功的经验，提出了将生物处理应用于冶金行业的冷轧废水处理思路，并总结了冷轧废水处理工程设计的几点看法。     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.     

Quality of life of relatives of mental patients

Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。