共查询到18条相似文献,搜索用时 93 毫秒
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介绍了SBBR工艺的流程,详述了SBBR工艺的技术特点及脱氮除磷机理,概括了SBBR工艺在国内外的研究与应用,指出了研究中有待完善的问题。表明SBBR工艺是一种有良好发展前景的新型废水生物处理工艺。 相似文献
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介绍CANON脱氮工艺、序批式脱氮除磷工艺(包括传统SBR法、CASS工艺、MSBR法等)、A2/O工艺、氧化沟系列脱氮除磷工艺和生物膜脱氮除磷工艺. 相似文献
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系统的阐述了污水脱氮除磷的机理,介绍了国内脱氮除磷的新技术,包括SND,SHARN-ANAMMOX,CANON和OLAND等工艺的原理、特点、工艺流程,列举了脱氮除磷工艺在污水处理行业的工程实例。得出目前污水处理脱氮除磷的新技术都是朝着高效、低耗、经济的可持续方向发展的,并指出污水处理脱氮除磷工艺未来的主要发展方向。 相似文献
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针对碳、氮、磷比例失调碳源偏低城市污水,因碳源不足而降低脱氮除磷效率的难题及连续流生物膜法除磷率低的缺点,为提高生物膜的除磷效率,通过构建厌氧/好氧交替运行的序批式生物膜反应器(SBBR),合理调控厌氧和好氧段的运行时间,处理广州地区碳源偏低的城市污水,研究其生物除磷的效果和控制影响因素.结果显示,在无需额外添加碳源的条件下,当进水TP浓度为1.65~7.10mg/L,出水TP浓度可在0.085~0.5mg/L之间,去除率达到90%以上.在此基础上,对SBBR的厌氧和好氧段的工艺特性及控制影响因素进行系统分析,指出厌氧/好氧交替运行的工序是SBBR处理城市污水高效除磷的前提和基础,而确保厌氧磷的最大有效释放是SBBR系统高效除磷的关键. 相似文献
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针对碳、氮、磷比例失调碳源偏低城市污水,因碳源不足而降低脱氮除磷效率的难题及连续流生物膜法除磷率低的缺点,为提高生物膜的除磷效率,通过构建厌氧/好氧交替运行的序批式生物膜反应器(SBBR),合理调控厌氧和好氧段的运行时间,处理广州地区碳源偏低的城市污水,研究其生物除磷的效果和控制影响因素。结果显示,在无需额外添加碳源的条件下,当进水TP浓度为1.65-7.10mg/L,出水TP浓度可在0.085-0.5mg/L之间,去除率达到90%以上。在此基础上,对SBBR的厌氧和好氧段的工艺特性及控制影响因素进行系统分析,指出厌氧/好氧交替运行的工序是SBBR处理城市污水高效除磷的前提和基础,而确保厌氧磷的最大有效释放是SBBR系统高效除磷的关键。 相似文献
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In this study, the performance of a sequencing batch biofilm reactor (SBBR) for removal of nitrogen and phosphorus from swine wastewater was evaluated. The replacement rate of wastewater was set at 12.5%throughout the exper-iment. The anaerobic and aerobic times were 3 h and 7 h, respectively, and the dissolved oxygen concentration of the aerobic phase was about 3.95 mg·L?1. The SBBR process demonstrated good performance in treating swine wastewater. The percentage removal of total chemical oxygen demand (COD), ammonia nitrogen (NH4+-N), total nitrogen (TN), and total phosphorus (TP) was 98.2%, 95.7%, 95.6%, and 96.2%at effluent concentrations of COD 85.6 mg·L?1, NH4+-N 35.22 mg·L?1, TN 44.64 mg·L?1, and TP 1.13 mg·L?1, respectively. Simultaneous nitrification and denitrification phenomenon was observed. Further improvement in removal efficiency of NH4+-N and TN occurred at COD/TN ratio of 11:1, with effluent concentrations at NH4+-N 18.5 mg·L?1 and TN 34 mg·L?1, while no such improvement in COD and TP removal was found. Microbial electron microscopy analysis showed that the fil er surface was covered with a thick biofilm, forming an anaerobic–aerobic microenvironment and facilitating the removal of nitrogen, phosphorus and organic matters. A long-term experiment (15 weeks) showed that stable removal efficiency for N and P could be achieved in the SBBR system. 相似文献
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污水处理的脱氮除磷工艺是中国现阶段的主要研究发展方向,众所周知,污水中的N、P是引起自然水体富营养化的主要原因之一。为了减少中国水体的恶化,中国把污水的排放标准提高,总氮总磷的指标做了进一步的提高。文章从传统脱氮除磷工艺的弊端出发,分别从A2/O工艺优化和新机理阐述了生物脱氮除磷的的研究进展,并做了介绍,同时对今后的脱氮除磷工艺做了展望。 相似文献
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同步生物脱氮除磷工艺的研究进展 总被引:1,自引:0,他引:1
本文分析了传统同步生物脱氮除磷工艺存在的问题,介绍了一些传统工艺的改进工艺和几种新工艺,包括A2/O工艺,改进的A2/O工艺,改进的SBR工艺及其他一些工艺,阐述了他们的特点,并探讨了同步生物脱氮除磷工艺的发展趋势。 相似文献
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城镇污水采用活性污泥法除磷脱氮工艺探讨 总被引:1,自引:0,他引:1
近年来,随着洗涤剂的广泛使用,废水中氮、磷的含量明显增加,引起水体富营养化加剧,因此,必须有效提高城镇污水处理厂氮和磷的去除。对多种除磷脱氮的活性污泥法,包括氧化沟工艺。A^2/O工艺、UCT工艺等,进行比较与分析,结果表明,UCT工艺比较适合除磷脱氮要求较高的污水处理厂应用。 相似文献
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城市污水生物脱氮除磷技术的研究进展 总被引:6,自引:0,他引:6
评述了近年来城市污水生物脱氮除磷技术的研究进展,重点介绍了生物处理的新方法:ANAMMOX–SHARON组合法、好氧同步脱氮除磷法和倒置A2/O法,并比较了各种工艺的优缺点。指出反硝化聚磷技术在倒置A2/O工艺中的应用将成为城市污水同步脱氮除磷研究的一个重要发展方向。 相似文献
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Characteristics of nitrogen and phosphorus removal in SBR and SBBR with different ammonium loading rates 总被引:2,自引:0,他引:2
Dong-Seog Kim No-Sung Jung Young-Seek Park 《Korean Journal of Chemical Engineering》2008,25(4):793-800
Laboratory scale experiments were conducted to study the deterioration of enhanced biological phosphorus removal (EBPR) due
to influent ammonium concentration, and to compare the performance of two types of sequencing batch reactor (SBR) systems,
a conventional SBR and sequencing batch biofilm reactor (SBBR). Both in SBR and SBBR, the total nitrogen removal efficiency
decreased from 100% to 53% and from 87.5% to 54.4%, respectively, with the increase of influent ammonium concentration from
20 mg/l to 80 mg/l. When the influent ammonium concentration was as low as 20 mg/l (C: N: P=200: 20: 15), denitrifying glycogen-accumulating organisms (DGAOs) were successfully grown and activated by using
glucose as a sole carbon source in a lab-scale anaerobic-oxic-anoxic (A2O) SBR. In the SBR, due to the effect of incomplete denitrification and pH drop, the nitrogen and phosphorus removal efficiency
decreased from 77% to 33.3% when the influent ammonium concentration increased from 20 mg/l to 80 mg/l. However, in the SBBR, simultaneous nitrification/denitrification (SND) occurred, and the nitrification rate in the aerobic
phase did not change remarkably in spite of the increase in influent ammonium concentration. Phosphorus removal was not affected
by the increase of influent ammonium concentration. 相似文献