Treatment of textile wastewater with an anaerobic fluidized bed reactor
Treatment of textile wastewater with an anaerobic fluidized bed reactor
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DOI：
10.1016/j.desal.2008.01.027
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发表时间：
2009-02-01
期刊：
影响因子：
9.9
通讯作者：
Dris, Azni
中科院分区：
文献类型：
--
作者：
Haroun, Mahdi;Dris, Azni
含有染料的纺织废水在环境中的排放由于毒理学和美学原因而令人担忧，因为染料阻碍光穿透，损害接收流的质量并且对食物链生物体有毒。以活性炭为载体材料，采用流化床反应器（FBR）对印染废水的化学需氧量（COD）、生化需氧量（BOD）和色度的去除效果进行了研究。在水力停留时间（HRT）为4 h时，不补充葡萄糖（阶段1和阶段2）和补充葡萄糖（阶段3 - 5）的情况下连续进料FBR，然后分别以36、18、12 L/d的流速增加至8和12 h。HRT操作持续14天。考察了有机负荷率（OLR）、水力停留时间（HRT）、底物添加剂葡萄糖浓度等操作条件对反应器去除效果的影响。结果表明，添加底物添加剂作为外加碳源，如葡萄糖（约0.6g/l），可使纺织废水厌氧处理成为可能。进一步增加纺织废水中的外加碳源并不能提高厌氧FBR反应器的脱色效率。研究表明，98%的可溶性COD，95%的BOD 5，和65%的颜色减少是可能的厌氧FBR。
The discharge of textile wastewater containing dyes in the environment is worrying for both toxicological and esthetical reasons as dyes impede light penetration, damage the quality of the receiving streams and are toxic to food chain organisms. A fluidized bed reactor (FBR) with activated carbon as Support material has been used to investigate the removal efficiency of chemical oxygen demand (COD), biochemical oxygen demand (BOD), and color of textile wastewater. The FBR was fed continuously without supplemented (Phase 1 and 2) and supplemented with glucose (Phase 3-5) at hydraulic retention times (HRT) of 4 h, and increased to 8 and 12 h with flow rates of 36, 18,12 L/d, respectively. The HRT was operated for a duration of 14 days. The effect of operational conditions such as organic loading rate (OLR), (HRT), and influence of glucose concentration as substrate additives was investigated to achieve the maximum removal efficiency in the reactor. Results indicated that anaerobic treatment of textile wastewater was possible with the supplementation Of Substrate additives as external carbon sources such as glucose (about 0.6 g/l). A further increase in the external carbon source added to textile wastewater did not improve the color removal efficiency of the anaerobic FBR reactor. The study implied that 98% soluble COD, 95% BOD5, and 65% color reduction were possible by an anaerobic FBR.