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简述了移动床生物膜反应器的工艺原理和特点,详细介绍了国内外移动床生物膜反应器的研究现状,最后提出移动床生物膜反应器在实际工程应用和理论研究中的发展趋势。 相似文献
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对比研究了使用移动床生物膜技术和普通接触氧化法处理印染废水中有机污染物的效果。发现在不改变普通接触氧化法的处理构筑物并且取得与其相同的处理效果的情况下,仅依靠投加悬浮填料,就可以将工艺流程的水力停留时间缩短9h。且填充比例越高,处理效果越好。 相似文献
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简述了移动床生物膜反应器的工艺原理和特点,详细介绍了国内外移动床生物膜反应器在生活污水、工业废水和生物脱氮方面的研究现状。通过比较不同生物膜法对焦化废水的处理效果,指出移动床生物膜反应器是一种经济、高效的焦化废水处理方法,最后提出移动床生物膜反应器在实际工程应用和理论研究中的发展趋势。 相似文献
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分别采用2种不同的填料,设定不同的HRT和填充率,考察特异性移动床生物膜反应器(SMBBR)工艺对NH3-N和COD的去除效果,实验HRT分别为25、13、9 h;DO的质量浓度控制在5 mg/L以上,温度10℃左右。系统稳定运行的结果表明,进水NH3-N的质量浓度在40~60 mg/L时,填充SDC-X填料(填充率60%)的1#反应器和填充SDC-J填料(填充率30%)的2#反应器出水NH3-N的质量浓度都在8 mg/L以下,对NH3-N的去除率最高可达98%;进水COD的为70~220 mg/L时,1#和2#的出水COD都保持在50 mg/L以下,去除率最高可以达到95%。SMBBR在相同的运行条件下,比现有的污水处理技术有更强的去除污染物能力。 相似文献
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利用移动床生物膜反应器(MBBR)工艺处理干清粪工艺的奶牛场废水。试验结果表明,进水NH4+-N含量、气水比、水力停留时间(HRT)以及是否回流对MBBR的处理效果影响明显,回流比对MBBR的脱氮效果有一定的影响。当进水NH4+-N、TN的质量浓度和COD分别为134.4、156.7 mg/L和460.7 mg/L时,在HRT和气水体积比、回流体积比分别为18 h和30:1、2:1的条件下,NH4+-N、TN和COD的去除率分别为98.04%、62.38%和75.18%。MBBR工艺可以有效地处理干清粪条件下的奶牛场废水,适应性强且效果稳定可靠。 相似文献
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好氧浮动床生物膜反应器运行参数的试验研究 总被引:4,自引:0,他引:4
通过对中试规模的浮动床生物膜反应器处理混合化工废水的试验研究,探讨了水力停留时间、污泥负荷、温度等对反应器处理性能与效果的影响。试验结果表明:水力停留时间在13.4h,14.4h,15.6h,17h时CODCr的平均去除率分别为74%,77%,77%,81%;污泥负荷范围在0.17~0.77kg犤BOD5犦/(kg犤MLSS犦·d)内,BOD5去除率先呈上升趋势,而后呈下降趋势;水温在8~10℃时,水力停留时间为11.7~15h,CODCr去除效率在57.7%~65.8%之间,BOD5去除率在76.3%~85.4%之间。 相似文献
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移动床生物膜反应器在化工废水处理中的应用 总被引:1,自引:1,他引:0
针对氯碱化工产品、有机中间体以及橡胶助剂系列产品生产废水水质,采用以移动床生物膜为主的处理工艺技术。详细介绍了处理工艺流程、主要处理单元设计工艺参数。工程运行结果表明,该工艺技术处理容积负荷高、抗冲击负荷强、处理效率高、运行稳定,出水水质符合江苏省地方排放标准DB 32/939—2006《化学工业主要水污染排放标准》表2中一级排放标准,苯胺类和硝基苯类出水水质符合GB 8978—1996《污水综合排放标准》表4中规定的新建单位一级标准。 相似文献
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曝气量对生物陶粒MBBR处理效能的影响 总被引:3,自引:0,他引:3
利用生物陶粒作为悬浮填料移动床反应器(MBBR)的填料处理南方城镇低浓度生活污水,通过试验考察了曝气量对生物陶粒悬浮填料移动床反应器(BCMBBR)去除有机物及脱氮效果的影响,并对在不同曝气量下BCMBBR载体生物膜量及悬浮污泥浓度进行了初步研究。试验结果表明:曝气量是影响BCMBBR处理效率的关键因素。当曝气量为7.7L/h时,反应器DO的质量浓度约为3.0mg/L,CODCrNH3-N、TN的去除率分别达到86.1%、83.8%、61.6%,曝气量过高或过低均会对处理效率产生不同程度的影响。 相似文献
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This article reports the design and fabrication of open-cell polyvinylidene fluoride (PVDF) foams as carriers that can promote biofilm growth and organic removal efficiency for biological wastewater treatment in attached growth bioreactors. Open-cell PVDF foams were fabricated by a manufacturing approach that integrated compression molding and particulate leaching. PVDF carriers were structured with two governing factors of leaching agent types (e.g., sodium chloride [NaCl] and sodium acetate [NaOAc]) and contents (e.g., 80 and 90 wt%). Open-cell PVDF foams possessed high porosity and high protected surface area (i.e., more than ×10 to ×20 of the areas of commercialized carriers), which promoted biofilm growth in these carriers. As a successful advantage, PVDF carriers used in the moving bed biofilm reactors (MBBR) were entirely covered by biofilm in both interior and exterior parts without clogging. This provides strong evidence of the bacterial compatibility of the fabricated open-cell PVDF foam carriers. Moreover, the specific morphology of the PVDF carriers in this article provided superior biofilm protection from the detachment in MBBR. Experimental results revealed that PVDF open-cell foams fabricated by 80 wt% of NaCl demonstrated higher mechanical strength with an organic removal efficiency of 77% ± 7% in the corresponding bioreactor containing them. 相似文献
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利用自建的分层悬浮填料移动床生物膜反应器(MBBR)处理模拟合成氨废水,考察了填料生物膜驯化过程中生物相的变化和反应器内基质浓度的降解情况。试验结果表明:当废水中NH3-N、CODCr和硫化物的质量浓度分别达到400、2 800和3 mg/L时,出水中的质量浓度分别为90、200和0.46 mg/L,基本达到GB 13458—2001《合成氨工业水污染物排放标准》的要求,去除率分别达到78%、93%和85%。与不分层MBBR对NH3-N和CODCr的去除率(70%和89%)相比较,分层MBBR的去除效果有较大程度的提高。 相似文献
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A new apparatus, the inverse fluidized bed biofilm reactor, is described. Introduction of the so called inverse fluidized bed, in which low density particles covered by a biofilm are fluidized by downflow of the liquid, allows control of the biofilm thickness and provides a high oxygen concentration in the reacting liquid. Characteristics of the reactor were studied by carrying out two important biotechnological processes: aerobic wastewater treatment by a mixed bacterial culture, and ferrous iron oxidation by the bacteria Thiobacillus ferrooxidans. The bioreaction rates per unit volume of the reactor were up to 14 times higher than those in the equivalent airlift bioreactor. The structure of the liquid flow was determined by a tracer method. 相似文献
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Performance and kinetics of membrane and hybrid moving bed biofilm‐membrane bioreactors treating salinity wastewater
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Alejandro Rodríguez‐Sánchez Juan Carlos Leyva‐Díaz José Manuel Poyatos Jesús González‐López 《American Institute of Chemical Engineers》2017,63(8):3329-3342
A pilot‐plant membrane bioreactor (MBR) and two pilot‐plant hybrid moving bed biofilm reactor–membrane bioreactors (MBBR–MBRs), divided into three aerobic and one anoxic chambers, were started up for the treatment of salinity‐amended urban wastewater. The MBBR–MBR systems worked with and without carriers in the anoxic zone (MBBR–MBRanox and MBBR–MBRn/anox, respectively). The systems were operated from start‐up to stabilization, showing high removal of organic matter—a maximum of 90% chemical oxygen demand and 98% biochemical oxygen demand on the fifth day for MBBR–MBRn/anox in the stabilization phase—but low nitrogen elimination—30% maximum for MBBR–MBRn/anox in the stabilization phase. Biofilm attached to carriers reached less than 50 mg L?1 in the hybrid system. MBR showed faster kinetics than the two MBBR–MBR systems during start‐up, but the opposite occurred during stabilization. Maximum specific growth rates for heterotrophic and autotrophic biomass were 0.0500 and 0.0059 h?1 for MBBR–MBRn/anox in the stabilization phase. © 2017 American Institute of Chemical Engineers AIChE J, 63: 3329–3342, 2017 相似文献