Effect of mixed liquor volatile suspended solids (MLVSS) and hydraulic retention time (HRT) on the performance of activated sludge process during the biotreatment of real textile wastewater
Effect of mixed liquor volatile suspended solids (MLVSS) and hydraulic retention time (HRT) on the performance of activated sludge process during the biotreatment of real textile wastewater
复制标题
真实纺织废水生物处理过程中混合液挥发性悬浮固体（MLVSS）和水力停留时间（HRT）对活性污泥法性能的影响
DOI：
10.1016/j.wri.2014.01.001
复制
发表时间：
2014
影响因子：
5.1
通讯作者：
T. R. Sreekrishnan
中科院分区：
文献类型：
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作者：
K. Kumar;K. Kumar;Gaurav Singh;M. G. Dastidar;T. R. Sreekrishnan
有充分的资料，在分批模式下使用纯微生物培养物从染料污染的废水中去除颜色和有机物。有必要开发环境友好和成本效益的处理技术，为实际的现场条件。因此，本研究的目的是进行评估驯化的混合微生物菌群的潜力去除颜色和有机物从真实的纺织废水。在稳态条件下，在实验室规模的活性污泥法（ASP）单元中进行实验，改变混合液挥发性悬浮固体（MLVSS）（2500，3500和5000毫克/升）和水力停留时间（HRT）（18，24和36小时）。结果表明，随着MLVSS和HRT的增加，脱色率和COD去除率均提高。在18 h HRT时，脱色率分别为46、54和67%，在2500、3500和5000 mg/l MLVSS时分别增加到67、75和90%（36 h HRT）。COD去除率分别为62，73和77%（在18小时HRT），分别增加到77，85和91%（36小时HRT），在2000，3500和5000毫克/升MLVSS。在本研究中所获得的结果的基础上，可以开发出合适的处理技术，用于处理各种染料污染的废水在连续的操作模式。这将具有在较短时间内处理大量废水的优点。
Adequate information is available on colour and organics removal in batch mode using pure microbial cultures from dye contaminated wastewater. There was a need to develop environment friendly and cost effective treatment technique for actual field conditions. Therefore, the present study was undertaken with an aim to evaluate the potential of acclimatized mixed microbial consortia for the removal of colour and organics from real textile wastewater. Experiments were performed in laboratory scale activated sludge process (ASP) unit under steady state condition, varying mixed liquor volatile suspended solids (MLVSS) (2500, 3500 and 5000 mg/l) and hydraulic retention time (HRT) (18, 24 and 36 h). The results showed that decolourization and chemical oxygen demand (COD) removal increased with increase in MLVSS and HRT. At 18 h HRT, decolourization was found to be 46, 54 and 67%, which increased to 67, 75 and 90% (36 h HRT) at 2500, 3500 and 5000 mg/l MLVSS, respectively. COD removal was found to be 62, 73 and 77% (at 18 h HRT) which increased to 77, 85 and 91% (36 h HRT) at 2000, 3500 and 5000 mg/l MLVSS, respectively. On the basis of the results obtained in this study suitable treatment techniques can be developed for the treatment of wastewater contaminated with variety of dyes in continuous mode of operation. This shall have the advantage of treatment of larger quantity of wastewater in shorter duration.