污水处理膜分离技术的研究进展(二)

4　污水膜分离生物技术的分类污水处理的膜分离生物技术由膜分离装置和生物处理装置组成 ,根据膜分离装置和生物处理装置的变化有多种分类。图 1　一体式污水膜生物反应器图 2　分体式污水膜生物反应器根据膜的使用形态 ,膜分离活性污泥法分为循环型和浸渍型两类。循环型 :膜组     

膜生物反应器及其发展展望

膜生物反应器(membranebioreactor,MBR)是高效膜分离技术和传统活性污泥法的结合,是一项很有发展前景的工艺。本文详细介绍了国内外膜生物反应器的发展,以及其种类、工艺特点和发展展望。     

有机废水和有机污泥的处理方法和处理设备Hamasaki,Yoshitada （Asahi Organic Chemicals Industry Co.,Ltd.,Japan ） .

一有机废水和有机污泥的处理设备包括泡沫分离槽、气泡发生装置、膜分离活性污泥处理槽、培养水池等。     

山梨酸废水的生化处理

山梨酸生产废水有机浓度高、可生化性好、含盐量高。废水中CODCr为8000-16500mg/L，B/C≥0.5，含盐量≥15g/L。本工程通过淹没式厌氧生物滤池和膜分离活性污泥法处理，CODCr总去除率高达93%-99%，出水CODCr≤300mg/L，达到GB8978-1996《污水综合排放标准》行业二级排放标准，顺利通过当地环保部门的验收。     

PW—W型高浓度有机废水处理装置

ＰＷ－Ｗ膜分离式活性污泥处理适于处理ＣＯＤｃｒ值３０００－１５０００ｍｇ／Ｌ的高浓度有机废水。该装置具有反应池与沉淀池一体化，ＭＬＳＳ浓度达１０ｇ／Ｌ以上，采用ＰＬＣ控制系统等优点。     

膜生物反应器污染原因分析及清洗方法的选择

膜生物反应器（MBR）是膜分离技术与传统活性污泥法生物处理技术相结合的一种高效的处理工艺,具有出水水质好,占地面积小等优点,但随着运行时间的延长,膜通量逐渐减小。本文针对膜生物反应器的污染机理,通过中试试验,选择合理的清洗药剂和清洗方式,有效恢复膜通量。     

信息与简讯

辽宁鞍山市西部第二污水处理厂(二期)工程该工程占地150亩,采用MBR处理工艺,即膜生物反应器,为高效膜分离技术与活性污泥法相结合的新型污水处理技术,建设一座日处理能力20万m3的二级污水处理厂。工程总投资4亿元。建设周期:2006年～2008年。     

一体化膜生物反应器在生活污水处理中的应用研究

膜生物反应器(MBR)是高效膜分离技术与活性污泥法相结合的新型污水处理工艺,广泛用于有机物含量较高的市政污水与工业废水处理,对该工艺各部分设施进行一体化集成箱式设计,可减少整个处理系统的占地面积和维护难度,使其便于在西北偏远山区小型企业站场生活污水处理中应用。     

MBR及其在难降解废水中的应用

膜生物反应器是将高效的膜分离技术与传统活性污泥法相结合的一种新型高效污水处理工艺。在膜生物反应器中,由平板膜及其构件组成的膜组件浸放于曝气池中,将曝气池中的细菌胶团和游离细菌全部保留在曝气池中,既能维持高浓度的活性污泥,污染物去除效率高,又能免去二沉池,保证出水悬浮物接近零的优良出水水质。重点阐述了膜生物反应器及膜生物反应器组件的分类及在难降解废水中的应用研究。     

膜生物反应器的研究与展望

膜生物反应器(MBR)是一项膜分离技术与生物反应器相结合的新型污水处理技术，具有广阔的发展前景。介绍了近年来MBR在难降解有机废水处理、污水脱氮除磷等领域的研究成果；论述了膜的性质和活性污泥混合液的性质以及膜分离操作条件等对膜污染防治的影响；指出了MBR进一步研究的领域：膜污染的机理和防治，与其他处理工艺的结合和改进，特殊废水的处理研究，设计规范和操作参数的确定，数学模式的研究等。     

膜生物反应器与传统活性污泥工艺的比较研究

主要考察了膜生物反应器和传统活性污泥工艺之间的差异,分别从污泥驯化、出水质量、生物相、混合液污泥的物理特性、反应器内微生物累积情况几方面分析它们的不同之处。总的来说,膜生物反应器结合生物化学降解作用和膜分离的特点,与传统活性污泥工艺相比有许多优势,在废水处理工程中更有应用前景。     

MBR中好氧颗粒污泥的培养及其性能研究

以实际生活污水接种絮状活性污泥在膜生物反应器中培养好氧颗粒污泥。通过对3个培养阶段污泥生长情况的考察,研究了颗粒污泥的变化规律及特性,并对好氧颗粒污泥的处理效果进行了分析。该系统连续运行4个月的结果表明,在膜生物反应器中成功培养出了运行比较稳定的好氧颗粒污泥,且系统处于稳态时好氧颗粒污泥对COD、氨氮、总氮、总磷的质量浓度分别为400～1 000、25～40、30～50、10～15 mg/L的生活污水其平均去除率分别达到95%、80%、70%和65%。     

Reshaping the activated sludge process: has the time come or passed?

Despite the amazing achievements over the years, the activated sludge (AS) process still maintains inherent drawbacks, namely gravity settling, high sludge ages, low excess sludge generation, etc., which hinder its successful operation and sometimes disrupt system performance. Substantial research on the subject has provided clear scientific evidence that time has come – or even passed – for reshaping the AS process. In the novel AS process, gravity settling will be replaced by membrane filtration, which will convert the system configuration into a membrane activated sludge (MAS) reactor; this configuration will be operated at an extremely low sludge age range of 2 to 4 days, which will maximize sludge generation and it will abandon the traditional anaerobic sludge digestion for optimizing energy recovery. It is suggested that super-fast membrane activated sludge (SFMAS) reactor be the new face of the AS process. SFMAS reactor will be the core unit of the AS process essentially limited to organic carbon (chemical oxygen demand) removal and energy recovery. The core SFMAS unit will also enable to benefit from all the assets of the AS process, such as nutrient removal, biopolymer recovery, etc., by means of hybrid systems in different configurations, i.e. by reactors with various functions that will be attached to the core unit. © 2019 Society of Chemical Industry     

活性污泥吸附剂应用研究现状

在概括介绍活性污泥产生、处理方法及吸附原理的基础上,综述了活性污泥作为吸附剂的制备方法、研究现状及其在废水处理中的应用,概括活性污泥用作吸附剂所面临的问题及发展方向.     

城市污水处理厂污泥膨胀的研究现状

活性污泥法是目前中国污水处理厂普遍运用的方法。而污泥膨胀是活性污泥法运行的最大危害之一。本文主要研究城市污水处理厂活性污泥法发生污泥膨胀的特性,污泥膨胀的分类,相关理论假说,污泥膨胀的影响因素和控制污泥膨胀的方法。     

活性污泥工艺的技术现状及发展趋势

活性污泥工艺是污水处理的主要工艺 ,传统的活性污泥工艺采用中等污泥负荷 ,曝气池为连续推流式。对传统工艺的改进可以充分满足各种不同的处理要求 ,这些改进可以分为池形的改进、运行方式的改进、曝气方式的改进、生物学方面的改进及投加填料等方面的改进。本文从工艺改进和污泥膨胀两个方面介绍了活性污泥工艺的技术发展 ,讨论了该工艺未来的发展趋势     

Characterization of synthetic and activated sludge and conditioning with cationic polyelectrolytes

This study investigates the effect of cationic polyelectrolytes on the final properties of synthetic and activated sludge. Synthetic sludge was prepared according to established procedures. Activated sludge was produced in a labscale, continuous-flow reactor which was fed with live activated sludge from a waste-water treatment plant. Capillary suction time (CST) was used to evaluate the sludge dewatering behaviour. The results from experiments indicated that the cationic polyelectrolytes had a critical effect on sludge dewatering, and made an improvement in the final properties of sludge. The two types of sludge have very similar dewatering characteristics after cationic polymer conditioning. The development of synthetic sludge is suggested also to be a possible surrogate for studying the final properties of activated sludge.     

污泥减量化研究进展

从现阶段国内外污泥处理与处置在环境和经济方面存在的问题出发,阐明了研究污泥减量技术的紧迫性。根据生物处理工艺中影响剩余污泥产生的可能途径,介绍了各种减量化技术的研究现状,并比较了减量效果和优缺点。     

The relationship between cation ions and polysaccharide on the floc formation of synthetic and activated sludge

This study has investigated in a comparative fashion the effect of cation ions and polysaccharide on the floc formation of both synthetic and activated sludge. Synthetic sludge was prepared according to established procedures; activated sludge was produced in a lab-scale, continuous-flow reactor which was fed with live activated sludge from a wastewater treatment plant. The results from experiments indicate that cation ions and polysaccharide could influence sludge floc formation. The relationship between polysaccharide concentration and cation ions concentration was examined at laboratory scale during flocculation with both synthetic and activated sludge; an increase in feed cation ions concentration led to a decrease in final polysaccharide concentration in the supernatant. An increase in cation ions concentration in the feed to the reactors was also associated with an increase in the bound biopolymer concentration. The changes in the bound biopolymer were explained according to the cation bridging model. Synthetic and activated sludge behave very similarly in terms of their characteristics and synthetic sludge can be used as a surrogate in activated sludge studies. The results of this work also indicate that the formation of cation-polymer complexes and polymer gelation are amongst the most important mechanisms for sludge coagulation-flocculation, and offer a means for optimisation of the activated sludge process.     

驯化活性污泥处理溴氨酸废水的实验研究

在膜生物反应器(MBR)中驯化活性污泥对溴氨酸进行生物降解实验.结果表明,由于溴氨酸的选择压,驯化过程中活性污泥浓度下降;TTC-脱氢酶活性下降并保持在较低的水平.在驯化期结束后,活性污泥对溴氨酸的脱色率和COD去除率可以分别达到90%和＞50%.核糖体基因间隔序列分析(RISA)显示活性污泥群落呈现动态变化,生物多样性下降.