Application of bacteria involved in the biological sulfur cycle for paper mill effluent purification
Application of bacteria involved in the biological sulfur cycle for paper mill effluent purification
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DOI：
10.1016/j.scitotenv.2008.09.054
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发表时间：
2009-02-01
影响因子：
9.8
通讯作者：
Buisman, Cees J. N.
中科院分区：
文献类型：
--
作者：
Janssen, Albert J. H.;Lens, Piet N. L.;Buisman, Cees J. N.
在厌氧废水处理中，硫酸盐的生物还原作用会产生恶臭、腐蚀性强、有毒的有害硫化氢。本文介绍了细菌在厌氧硫转化和好氧硫转化中的作用和应用，并以造纸废水处理为例进行了说明。硫酸盐废水首先通过厌氧UASB反应器去除大量COD，同时伴随着沼气和硫化氢的形成。在曝气池中，残留的COD(有机)和形成的溶解硫化氢被去除。沼气由CH(4)(80-90体积%)、CO(2)(10-20体积%)和H(2)S(0.8-1.2体积%)组成，在发电机中燃烧前进行脱硫，从而采用一种新的生物脱H_2S工艺。这一过程将在本文中更详细地描述。厌氧生物反应器的生物质具有紧凑的颗粒结构，并含有多样化的微生物群落。因此，世界各地的其他厌氧生物反应器都接种了来自UASB反应器的生物量。该污泥还成功地用于以一氧化碳为电子供体的硫酸盐还原和甲硫醇转化的研究。这表明了这种复杂的反应堆生物质的生物技术潜力。(C)2008爱思唯尔B.V.保留所有权利。
In anaerobic wastewater treatment, the occurrence of biological sulfate reduction results in the formation of unwanted hydrogen sulfide, which is odorous, corrosive and toxic. in this paper, the role and application of bacteria in anaerobic and aerobic sulfur transformations are described and exemplified for the treatment of a paper mill wastewater. The sulfate containing wastewater first passes an anaerobic UASB reactor for bulk COD removal which is accompanied by the formation of biogas and hydrogen sulfide. In an aeration pond, the residual COD(organic) and the formed dissolved hydrogen sulfide are removed. The biogas, consisting of CH(4) (80-90 vol.%), CO(2) (10-20 vol.%) and H(2)S (0.8-1.2 vol.%), is desulfurised prior to its combustion in a power generator thereby using a new biological process for H2S removal. This process will be described in more detail in this paper. Biomass from the anaerobic bioreactor has a compact granular structure and contains a diverse microbial community. Therefore, other anaerobic bioreactors throughout the world are inoculated with biomass from this UASB reactor. The sludge was also successfully used in investigation on sulfate reduction with carbon monoxide as the electron donor and the conversion of methanethiol. This shows the biotechnological potential of this complex reactor biomass. (C) 2008 Elsevier B.V. All rights reserved.