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以云湖度假村生活污水处理工程为实例,不用一次性投资较大的膜处理法,采用预曝调节+生化+生物过滤+消毒,并从理论上及实际应用中进行了探讨说明该工艺。 相似文献
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李向东 《铁路节能环保与安全卫生》2020,(1):17-21
通过海产品加工生产污水处理站“设计施工系统联调联试”的全过程,对其污水性质及特点进行分析,采取以“气浮+ICER生化”为核心的污水处理工艺,结合污水处理系统联调联试,从提温降盐、确定混凝剂投放量及活性污泥培养驯化等方面进行工艺改进,以确保污水达到《污水综合排放标准》(GB 89781996)二级标准。 相似文献
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在城市发展中,人口增多和居民生活方式的变化都加大了城市污水量的增加,现代城市污水已经对地下水体产生了污染,人们的生活用水受到了严重影响。在国家环保要求下,利用先进污水处理式方法对城市污水进行处理至关重要,本文对城市污水特点进行了分析,并重点对生化法污水处理工艺进行了分析,希望能为行业内人士提供参考,提高城市污水的净化能力,促进城市的持续发展。 相似文献
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污水生化处理过程中N2O的产生特征研究进展 总被引:1,自引:0,他引:1
N2O是大气中重要的温室气体之一,而污水生化处理已被报道是导致N2O产生的潜在人为源之一。大量研究表明,污水生化处理过程中N2O主要产生于微生物的硝化和反硝化代谢过程中。从微生物学和生物化学反应角度,阐述了硝化和反硝化过程中N2O的生成机理,同时给出了几种典型污水处理工艺N2O的产生量和相关影响因素,并对A/A/O工艺中不同处理单元N2O的释放情况进行重点论述。研究发现,对于几种典型的污水处理工艺,由于工艺条件和主要影响因素的不同,N2O的释放量存在较大的差异;对于同一污水处理工艺,不同处理单元N2O的释放量也存在很大差别。污水处理厂中,好氧处理单元是N2O的主要排放单元,而在好氧单元中,DO质量浓度及NO2--N质量浓度是影响N2O释放量的主要因素。在综合分析硝化和反硝化过程N2O产生机理的基础上,进一步总结了污水生化处理过程中DO质量浓度、NO3-和NO2-质量浓度、pH值、C/N比、污泥龄等对N2O释放的影响。 相似文献
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现如今,面对庞大的生活工业污水排放量,污水处理已成为环境工程建设的难点,而膜生物反应技术在污水处理方面有着显著的优势。本文首先就膜生物反应技术相关概念予以概述,详细介绍膜生物反应技术的优、劣势,重点分析膜生物反应技术应用的类型及其在污水处理实际应用,希望对环境工程建设有借鉴价值。 相似文献
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介绍了CO泄漏点的自控检测及报警系统的原理、硬件电路设计、系统软件设计及主要技术指标。并就其在铁合金矿热炉CO泄漏点上的应用与美、德国家产品进行了经济对比,在性能一样的情况下,优于国外产品,应用前景很好。 相似文献
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本文对一起“矿井动力现象”事故,从发生这起事故的条件和可能性及其事故后的特征等多方面进行了分析论证,认为该次事故不是一起“矿井动力现象”——煤与瓦斯突出,而是一次因放炮引起的瓦斯爆炸事故。指出了发生这次事故的原因,总结了该次事故的经验及教训,同时也提出了防止这类事故的预防措施。 相似文献
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Debra L. Nelson 《组织行为杂志》1987,8(4):311-324
This paper examines socialization and adjustment processes of newcomers to organizations. While scholars in this area agree that the socialization process is a stressful event, few have empirically approached the process from this perspective. In addressing this problem, a theoretical synthesis of the literatures of organizational socialization and organizational stress is proposed. From this integration, a model is developed which facilitates an examination of the task, role, and interpersonal demands which individuals face in the stages of socialization and an analysis of the interrelationships of these demands and their effects upon individual and organizational outcomes of the socialization process. Finally, directions for future research are proposed for extending understanding of this crucial part of organizational entry. 相似文献
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姜蔚文 《中国特种设备安全》2014,(8):66-68
为保证集装箱堆高机和正面吊的安全作业,本文对几起集装箱堆高机和正面吊事故的原因进行了归纳和分析,从提高作业人员的安全意识、企业安全管理、以及对设备的技术改进等方面出发,对该类事故的预防和控制进行了探讨。 相似文献
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《Process Safety and Environmental Protection》2014,92(6):760-765
Drawing on historical data we show that the international community of process engineers has not been good at learning lessons from their past accidents. We call for a paradigm change in the way we approach this and the creation of a single new, multi-national, multilingual accident database that is free at the point of use and that includes immediate and underlying causes as well as “lessons learned”. It must be user-friendly and provide links to key source documents. The purpose of this paper is to challenge those in authority, and with the power to do so, to make this happen. We give some preliminary views on what may be required. In countries that so choose this could include an element of compulsion to consult the database in specific circumstances and a sign-off procedure to verify that this has been done. 相似文献
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矿井通风系统评价的可拓方法 总被引:3,自引:3,他引:3
首先提出通风系统评价的指标体系,该指标体系主要涵盖了技术可行性、经济合理性和安全可靠性等3个方面的13个评价指标;然后应用可拓学的理论与方法,建立多层次可拓综合评价模型。该模型以综合关联度作为评价准则,避免了评价中的主观性。通过将该方法对河南神火煤电股份有限责任公司新庄矿通风系统进行评价,指出该矿通风系统整体状况的优劣,通风系统中存在的问题并提出了相应的改进对策。结果表明,该方法较其他评价方法更加客观,结论更符合生产实际。 相似文献
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In our introduction to this special issue on understanding knowledge hiding in organizations, we provide some context to how and why this phenomenon should be studied. We then describe the five articles that comprise the special issue, and we note some common themes and divergences in this collection. Our introduction concludes with some suggestions for future research on knowledge hiding in organizations. 相似文献
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This paper aims at presenting the evolution of process safety in Spain from various points of view. In first place, a study of the accidents occurred in this country in the process industry and in the transportation of chemical substances is presented. After this, the starting point of the process safety research in Spain and its evolution during the years are explained. The importance of this topic has also been reflected in the chemical engineering studies in some Spanish universities. Therefore, the current status of the studies on process safety in Spain is analyzed in this paper. A section has also been devoted to the process safety in the Spanish industry. An analysis of the related legislation and its implementation in the Spanish process industry is also presented in this paper. Finally, the professional career of Prof. Joaquim Casal, the pioneer in Spain in process safety and risk assessment, is summarized. 相似文献