硫酸盐还原菌在污水处理中的应用

硫酸盐还原菌(SRB)是一组进行硫酸盐还原代谢反应的有关细菌的通称。对硫酸盐还原菌的代谢机理进行研究和总结,阐述了酸性重金属废水的特点和硫酸盐还原菌处理酸性重金属废水的原理及特点,研究了温度、pH、和硫化物对硫酸盐还原菌在厌氧处理中的影响。     

基于分子水平的硫酸盐还原菌汞甲基化机制及其影响因素研究

硫酸盐还原菌在自然界中普遍存在,在其代谢活动中,往往还会伴有甲基汞的生成。研究者从分子水平研究了硫酸盐还原菌汞甲基化的途径和机制。本文还综合论述了影响硫酸盐还原菌汞甲基化的影响因素,期待能够为控制和降低环境中甲基汞水平提供相关理论支撑。     

硫酸盐还原菌对喷气燃料腐蚀性质的影响

选取脱硫弧菌属及脱硫肠状菌属两种硫酸盐还原菌作为试验对象分别进行培养观察,通过试验模拟储存喷气燃料底层水发生硫酸盐还原菌污染,并根据银片腐蚀试验及MPN计数法考察硫酸盐还原菌能否利用喷气燃料中的含硫化合物进行生长代谢及硫酸盐还原菌对喷气燃料腐蚀性质的影响。结果表明:硫酸盐还原菌自身不能直接利用喷气燃料中的含硫化合物进行正常的生长代谢;硫酸盐还原菌可以造成喷气燃料银片腐蚀不合格且银片在油相中的腐蚀级别高于水相;底层水中的硫酸盐还原菌浓度越高,其腐蚀银片的速度就越快;在当前试验体系下,当底层水中硫酸盐还原菌的浓度超过9.5个/mL时即可造成喷气燃料银片腐蚀不合格。     

油田回注水中硫酸盐还原菌对金属腐蚀的机理及其防治方法

油田回注水中硫酸盐还原菌对生产系统中的管线、设备等造成严重腐蚀,影响油田的生产.作者综述了油田回注水中硫酸盐还原菌对金属腐蚀的机理及防治硫酸盐还原菌腐蚀的物理和化学方法.同时,提出解决硫酸盐还原菌腐蚀问题的发展方向.     

硫酸盐还原菌的环境适应性研究

采用S培养基培养的方法对硫酸盐还原菌（一下简称“SRB”）进行了分离与鉴定。实验通过对SRB的生理性和生化特性的了解,结合其生存条件和存在状态进行研究,得出了主要的环境因素中pH值和温度对SRB活性的影响关系,并提出采用合适的环境因素来更好地控制SRB的生长代谢活动,以寻求有效的防治措施来控制硫酸盐还原菌引起的腐蚀,延长有关设备的正常使用寿命。     

耐氧硫酸盐还原菌的研究进展

阐述了硫酸盐还原菌的分类、耐氧硫酸盐还原菌的发展史和耐氧机制,并对它的腐蚀机理做了全面的叙述.     

硫酸盐还原菌和异养硝化菌对304不锈钢腐蚀研究

研究了热电厂冷却塔黏泥中的硫酸盐还原菌和硝化菌的代谢特性。采用表面分析技术、腐蚀失重法、电化学技术分析304不锈钢在硫酸盐还原菌和硝化菌共同作用下的腐蚀行为。结果表明,混菌作用下304不锈钢表面形成均匀的生物膜,腐蚀速度小于单菌体系。     

嗜热硫酸盐还原菌在不同温度下的生长及其硫代谢

文章针对嗜热硫酸盐还原菌在不同温度下的生长及硫代谢进行了研究。研究发现随着生长温度的降低,其指数生长阶段的生长速度在降低,稳定生长阶段的时间在延长。并且随着生长温度的降低,其硫代谢的产物发生变化。随着生长温度的降低,该嗜热硫酸盐还原菌的代谢过程有硫代硫酸盐出现,硫代硫酸盐能够进一步被还原生成硫离子。当生长温度降低到30℃时,只有硫代硫酸盐生成,而没有硫离子出现。     

硫酸盐还原菌的微生物腐蚀及其防护研究进展

综述了硫酸盐还原菌(SRB)引起微生物腐蚀(MIC)的各种机理及其形成生物膜的腐蚀作用,以及利用微生物防治硫酸盐还原菌腐蚀的研究进展.     

富集的硫酸盐还原菌沉积物生物还原地下水中U(Ⅵ)的实验研究

通过添加富集得到的含有丰富的硫酸盐还原菌的沉积物到沉积物-地下水微模型中,并添加乙醇作为碳源,分别与接种硫酸盐还原菌并添加碳源组和仅添加碳源组相比较,研究富集的硫酸盐还原菌沉积物对地下水中U（Ⅵ）还原的作用。结果表明,添加硫酸盐还原菌沉积物组、接种硫酸盐还原菌组和对照组中的铀浓度分别在第19、22和28 d下降至GB 23727-2009规定的0.05 mg·L^-1排放标准以下。各组沉积物中具有还原U（Ⅵ）功能的微生物群落的多样性差异较小。添加硫酸盐还原菌沉积物组、接种硫酸盐还原菌组和对照组的沉积物中具有还原U（Ⅵ）功能的微生物群落的丰度分别为35.3%、32.5%和13.1%。由此可见,富集的硫酸盐还原菌沉积物增加了微模型中具有还原U（Ⅵ）功能的微生物群落的丰度,从而促进了U（Ⅵ）的还原。     

油田污水中硫酸盐还原菌检测技术的研究进展

介绍了硫酸盐还原菌（SRB）在油田污水中的生长特性,综述了硫酸盐还原菌检测技术的研究新进展,分析比较了各种检测技术的优缺点。为选择更有效的检测方法提供了依据,也为进一步完善检测技术指明了方向。     

Sulphate bioreduction for the treatment of polluted waters: solid versus liquid organic substrates

BACKGROUND: In this study a comparison between two continuously operating fixed‐bed column systems was performed in order to select the best operating conditions in terms of organic sources for sulphate reducing bacteria (SRB). The first column system (solid substrate, SS) was filled with a solid reactive mixture containing the organic matter necessary for SRB growth, while the second one (liquid substrate, LS) was filled with inert material and continuously fed by ethanol. RESULTS: In the SS column 50 ± 10% sulphate abatement was reached at steady state, while metals were totally removed. Blank tests showed that biosorption was mainly responsible for both sulphate and metal removal. In the LS column, sulphate abatement was 70 ± 10% at steady state against 10 ± 5% of an identical column without inoculum (blank liquid substrate, BLS). Comparison with BLS showed that the main mechanism operating in this system was bioprecipitation. Estimated degradation rate constants for both SS and LS columns indicate similar performances (0.008 ± 0.001 and 0.0085 ± 0.0005 d^?1 for SS and LS, respectively). CONCLUSIONS: LS column systems offer a valid alternative to conventional SS systems, avoiding the use of potentially harmful wastes as organic sources for SRB metabolism. Copyright © 2009 Society of Chemical Industry     

Kinetik des anaeroben Glycerinabbaus mithilfe sulfatreduzierender Bakterien

The efficiency of the production of Biosulfid for the elimination of heavy metals or sulphate from industrial wastewater is crucial on the used substrate and is directly related to the recoverability of the carbon source by microorganisms. Easily accessible and easy to use is glycerol as substrate for the sulfate‐reducing bacteria (SRB). Subject of the presented work was the investigation of the anaerobic degradation of glycerol in the batch fermentation. A mixed culture of SRB and a kinetic model approach was determined.     

Effects of physical parameters of a gravel bed on the activity of sulphate-reducing bacteria in the presence of acid mine drainage

The use of sulphate-reducing bacteria (SRB) in the passive treatment of acid mine drainage (AMD) requires the presence of a sediment, such as gravel bed, in which the bacteria can establish microenvironments conducive to their survival in the presence of oxygen and acidity. The characterization of relationships between the physical environment and SRB activity would be useful in the sizing of passive treatment systems using SRB. The effects of physical parameters of a gravel bed (i.e. void volume, total surface area of gravel, type of gravel) on SRB activity while in the presence of varying loads of fresh AMD was investigated. SRB activity was expressed as the proportion of sulphate removed after 7 days. The study was accomplished in a series of column reactors containing beds comprising different types and size classes of gravel. SRB were established in the beds and metal and sulphate removal were monitored. Quantifiable relationships were found to exist between SRB activity and the physical parameters of the bed. ©1997 SCI     

注水开发污水中硫酸盐还原菌抑制剂研究进展

在油田注水开发污水中,硫酸盐还原菌(SRB)是引起微生物腐蚀及环境污染的主要原因之一。SRB的存在会导致金属管道及设备的腐蚀,其腐蚀产物硫化亚铁和氢氧化亚铁以及菌体本身会被油污包裹造成管道及地层堵塞,SRB的存在还会造成聚丙烯酰胺等聚合物的降解,影响后续强化采油开发。目前,油田系统中抑制SRB最常用和有效的方法是化学方法,通过在油田回注水中投加SRB抑制剂。该文综述了注水开发污水中SRB常用化学抑制剂应用现状及研究进展,将其按照杀菌机理分为氧化型抑制剂和非氧化型抑制剂两类。然而由于地层不同、采油过程不同,应采用不同种类化学抑制剂投加回注水,因此,研制相应新型、高效、环保的SRB抑制剂是目前主要研究课题。     

硫酸盐还原菌引起的腐蚀及微生物防控研究进展

综述了硫酸盐还原菌（SRB）引起的微生物腐蚀作用机理,同时介绍了应用异养反硝化菌与SRB的生长空间和营养物质的竞争作用以及自养反硝化菌与SRB的拮抗作用及降低来源于SRB的硫化物,起到防止硫酸盐还原菌对油田管道的微生物腐蚀作用。     

硫酸盐还原菌处理废水的应用进展

硫酸盐还原菌（SRB）在废水处理方面有独特的优势,可降解很多其他微生物难以降解的物质。本文在阐明SRB降解水中污染物原理的基础上,充分探讨了SRB在处理重金属废水、矿山酸性废水、有机废水中的应用现状及研究进展,并对其在废水治理方面进行了展望。     

脱氮硫杆菌生长特性及其对碳钢SRB腐蚀的防护作用研究

将脱氮硫杆菌(TDN)作用于被硫酸盐还原菌(SRB)微生物腐蚀的碳钢,研究了SRB和TDN生长特性及最适生长条件.利用静态挂片法研究SRB在不同环境下的腐蚀行为,以及TDN的防护效果;并借助扫描电子显微镜、X-射线能谱仪等研究了腐蚀后钢片的形貌及腐蚀产物.结果表明,SRB和TDN生存条件相似并可共存于同一环境;SRB可加速对X70钢的腐蚀,若有TDN共存时腐蚀程度明显降低,且TDN可消耗SRB代谢的具有腐蚀性的硫化物从而减轻SRB对钢基体的腐蚀.     

Comprehensive Modelling of the Pitting Biocorrosion of Steel

In this paper, a comprehensive mathematical model was developed in order to estimate the instantaneous biocorrosion pit depth and shape on steel structures in sulfate‐reducing bacteria (SRB) environments. The SRB cathodic depolarization theory was adopted as the SRB‐influenced biocorrosion mechanism. The model was applied to marine, landfill, and freshwater environments. The comprehensive feature of the model made it possible to predict the pitting biocorrosion growth rate and the pit depths and shapes in each of the above environments. The model results were found to be in reasonable agreement with the experimental data found in the literature under the identical conditions.