Specific nutrient removal rates in saline wastewater treatment using sequencing batch reactor
Specific nutrient removal rates in saline wastewater treatment using sequencing batch reactor
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DOI：
10.1016/j.procbio.2005.03.068
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发表时间：
2006-01-01
影响因子：
4.4
通讯作者：
Uygur, A
中科院分区：
文献类型：
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作者：
Uygur, A
在序批式反应器（SBR）中研究了不同盐浓度（0 ~ 6%,w/v）对含盐废水中特定营养物去除率的影响。序批操作分为厌氧、好氧、缺氧、好氧4个阶段，水力停留时间（HRT）为1/3/1/1 h，沉淀时间为3/4 h，固相保留时间（SRT）均为10 d。随着盐浓度的增加，特定营养物（COD、NH4-N和PO4-P）的去除率降低，这是由于盐对微生物的不利影响。在活性污泥培养液中加入耐盐菌盐盐杆菌（1/1,v/v），以提高SBR的除营养物性能。比较了无盐杆菌和添加盐杆菌的活性污泥培养物对所有盐含量的去除效果。添加盐杆菌的活性污泥的营养物质去除率高于不添加盐杆菌的活性污泥，特别是在高盐含量时。(C) 2005 Elsevier Ltd版权所有。
Effects of salt concentration (0-6%, w/v) on specific nutrient removal rates from saline wastewater in a sequencing batch reactor (SBR) were investigated. The sequencing batch operation consisted of anaerobic, oxic, anoxic and oxic phases with hydraulic residence times (HRT) of 1/3/1/1 h and a settling phase of 3/4 h. Solids retention time (SRT) was kept constant at 10 days in all experiments. Specific nutrient (COD, NH4-N and PO4-P) removal rates decreased with increasing salt concentration due to adverse effects of salt on microorganisms. A salt tolerant organism, Halobacter halobium, was added to the activated sludge culture (1/1, v/v) in order to improve the nutrient removal performance of the SBR. Nutrient removal performances of Halobacter-free and Halobacter-added activated sludge cultures were compared for all salt contents tested. Specific rates of nutrient removal obtained with the Halobacter-added culture were higher that those of Halobacter-free activated sludge, especially at high salt contents. (C) 2005 Elsevier Ltd. All rights reserved.