共查询到20条相似文献,搜索用时 140 毫秒
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《中国环境管理干部学院学报》2019,(5)
选用实验室自有菌株,选择5μL、10μL、15μL三种不同体积菌悬液,采用夹层法制备海水BOD微生物传感器,通过测试,了解菌悬液体积对传感器性能的影响,并在最佳条件下测试传感器的性能。实验结果表明:这三种规格的传感器均能满足海水BOD在线监测的需要,从传感器性能和菌悬液使用量等方面考虑,10μL菌悬液制备的微生物膜是最优膜。最优膜组装的传感器在重现性、测量范围及使用寿命等性能指标完全能够满足海水BOD的测定。 相似文献
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油污土壤的生物处理技术及其影响因素分析 总被引:1,自引:0,他引:1
生物处理技术可以用于转化和去除土壤中的石油类污染物,微生物对油污土壤产生降解作用,其降解的最终产物是CO2和水,不产生二次污染。重点分析了影响微生物降解的主要因素,包括pH值、温度、湿度、供氧情况、营养素、表面活性剂加入量、油污染强度,论述了各种影响因素的调整和控制方法。 相似文献
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介绍了印染废水反渗透膜处理回用的原理、运作流程,并对膜处理产水进行了水质测试,评估其回用于生产的可行性。结果证明,印染废水经反渗透膜处理后含盐量和电导率大大降低,回用水的各项指标均达到印染生产用水要求,可满足中高档印染产品的生产需要。 相似文献
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对己内酰胺生产过程废水的回用处理工艺进行了研究。以某己内酰胺化工厂的LUCAS出水作为研究对象,采用膜生物反应器和反渗透膜处理工艺,研究此系统对己内酰胺废水的处理效果。试验结果表明,膜生物反应器工艺适用于该化工厂的生产废水,出水COD平均值为31.33mg/L,平均浊度为0.2NTU,氨氮平均值为2.81mg/L,可以满足反渗透膜的进水要求。在浓缩倍数为3时,反渗透膜系统运行稳定,且产水可以满足化工部循环冷却水用再生水水质标准。 相似文献
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<正> 微生物处理在有害废物处理领域中有着广阔的应用前景,它提供了一个廉价、有效的清除方法,对污染物所进行的是最终的清除。从微生物学原理出发,已经有很多混合培养系统和一系列新的培养法适用于处理有害物。多数情况下,生物处理最有利于与其它技术结合使用,如热力学去除或物理、化学预处理。许多已被封存的有害废物可用微生物来处理。微生物处理是多方面的,处理系统所用的微生物可回收利用。污染物去除的结果已表明,用可靠的工程原理是适宜的,各种生物处理方法所获得的经验越来 相似文献
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Hosny K. Khordagui 《Environmental management》1992,16(3):309-316
It is estimated that some 17 metric tons of residual oxidants (chlorine) are discharged into the enclosed coastal seawater
of Kuwait on a daily basis from power-desalination plants alone. Alarmed by the unlimited number of reported cases of damage
to marine aquatic systems due to chlorine discharge around the world, several alternatives were proposed to control such a
massive discharge of residual oxidant into seawaters. Most of the proposed alternatives lacked the basic criteria necessary
for their evaluation, justification, and then selection.
The objective of this article is to provide a conceptual approach that can be used to select a control measure for residual
oxidant discharge in Kuwait coastal seawaters. This approach is based on state-of-the-art knowledge and the unique operational
and environmental factors involved. A matrix system was designed whereby the cost of residual chlorine control alternative,
its effectiveness, and environmental and public health impact, performance, and reliability in Kuwait can be compared and
evaluated. The selection approach considered currently operating power plants in terms of their engineering design and material
(cast iron or steel condensers), current operational conditions, operator's perception, acceptability, and projected problems
associated with the environmental management of proposed modifications.
The proposed approach revealed that in Kuwait, conventinal chlorination was marginally superseded only by chlorination/dechlorination
using SO2 and operation alteration using process optimization. The overall cost-effective assessment matrix classified other alternatives
as worse than chlorination by various degrees.
Ozone and UV were found to be the worst and the least desirable alternatives for biofouling control of seawater in Kuwait.
In light of the available information on the consequences of the Gulf War on the marine environment, and the potential formation
of additional halogenated organic compounds through the reaction of residual chlorine with the released petroleum hydrocarbons,
it is essential to control residual chlorine discharged into the nearshore environment of Kuwait. 相似文献
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Fernandez L 《Journal of environmental management》2008,89(4):308-321
Maritime shipping has two vectors of spreading marine invasive species: ballast water inside the ship and biofouling on the hulls outside the ship. While some attention has focused on ballast water, virtually none is focused on biofouling. This paper offers a quantitative analysis of economic incentives for shippers and regulating ports to address both pollution vectors. The strategies to address the vectors are induced by incentive mechanisms involving liability, subsidies and taxes. Results show these offer ample incentives in order to truly foster abatement of both vectors. Data from North America's Pacific coast is included in the analysis. 相似文献
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利用二氧化氯在360nm处有一最大吸收峰以及二氧化氯能够通过微孔性聚四氟乙烯膜的特性进行了静态膜分离的研究。通过研究温度和二氧化氯的浓度对分离效果的影响,可以确定:温度越高越有利于二氧化氯的膜分离,但温度高于20℃时二氧化氯会发生分解,故最佳分离温度应为20℃。 相似文献
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