A NOVEL MEMBRANE BIOREACTOR FOR DETOXIFYING INDUSTRIAL WASTE-WATER .2. BIODEGRADATION OF 3-CHLORONITROBENZENE IN AN INDUSTRIALLY PRODUCED WASTE-WATER
A NOVEL MEMBRANE BIOREACTOR FOR DETOXIFYING INDUSTRIAL WASTE-WATER .2. BIODEGRADATION OF 3-CHLORONITROBENZENE IN AN INDUSTRIALLY PRODUCED WASTE-WATER
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DOI：
10.1002/bit.260411003
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发表时间：
1993-04-25
影响因子：
3.8
通讯作者：
LIVINGSTON, AG
中科院分区：
文献类型：
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作者：
LIVINGSTON, AG
采用新型膜生物反应器处理间氯硝基苯工业废水。由于废水的无机组成（pH < 1，盐浓度4%w/w），该废水在没有某种形式的预处理或稀释的情况下不适合直接生物处理。在膜生物反应器中，有机污染物首先通过选择性膜渗透从废水中分离，然后在生物反应器的生物生长室中生物降解。在废水流速为64 mL h-1（对应于约1.7 h的接触时间）时，废水中99%以上的3-氯硝基苯和99%以上的硝基苯被降解。3-氯硝基苯的降解伴随着氯离子的化学计量比的演变。3-氯硝基苯和硝基苯的降解都伴随着二氧化碳的释放，进入系统的碳约80%被氧化为CO2碳。跨膜传质分析表明，3-氯硝基苯和硝基苯的传输速度比苯酚。这是解释在一个电阻串联模型，它表明苯酚转移率限制的膜扩散步骤，而氯硝基苯和硝基苯转移率限制的液膜传质。
A novel membrane bioreactor has been used for the treatment of an industrially produced wastewater arising in the manufacture of 3-chloronitrobenzene. This wastewater is not amenable to direct biological treatment without some form pretreatment or dilution, due to the inorganic composition (pH < 1, salt concentration 4% w/w) of the wastewater. In the membrane bioreactor, the organic pollutants are first separated from the wastewater by selective membrane permeation, and then biodegraded in the biological growth compartment of the bioreactor. At a wastewater flow rate of 64 mL h-1 (corresponding to a contact time of approximately 1.7 hours) over 99% of the 3-chloronitrobenzene and over 99% of the nitrobenzene in the wastewater were degraded. Degradation of 3-chloronitrobenzene was accompanied by evolution of chloride ions in a stoichiometric ratio. Both 3-chloronitrobenzene and nitrobenzene degradation were accompanied by the evolution of carbon dioxide; approximately 80% of the carbon entering the system was oxidized to CO2 carbon. Analysis of mass transport across the membrane revealed that 3-chloronitrobenzene and nitrobenzene are transported more rapidly than phenol. This is explained in terms of a resistances-in-series model, which shows phenol transfer to be rate limited by the membrane diffusion step, whereas the chloronitrobenzene and nitrobenzene transfer are rate limited by the liquid film mass transfer.