膜电除尘器-静电除尘新技术

膜电除尘器是将炭纤维或硅纤维编织膜作为集尘极的新式电除尘器,它克服了传统电除尘器存在的一些缺点,进一步提高了除尘效率,降低了电除尘器的造价,同时能去除粉尘中的酸性盐.介绍了膜电除尘器的结构、特点及除尘性能,并指出了进一步研究的方向.     

好氧生物处理污染水体的供氧技术

针对好氧生物处理污染水体需要充足的溶解氧，阐述了氧传递原理、传统供氧技术（机械供氧，鼓风供氧、氧载体供氧）和新型供氧技术（射流曝气供氧、膜供氧）。指出氧载体供氧和膜供氧技术具有广阔的应用前景。从材料，工艺及应用等方面详细介绍了膜供氧技术的研究进展，并对其发展前景进行了展望。     

膜—生物反应器特性影响因素研究

通过对外压管式膜组件与曝气池构成的好氧膜生物反应器的研究，分别考究膜组件的操作压力，膜面流速以及活性污泥混合液的污泥浓度，溶解性有机特的含量和温度等对膜通量的影响。     

TiO_2/Ti薄膜电极制备和光电催化降解罗丹明B的研究

以TA1钛合金为原料采用阳极氧化法制备新型薄膜电极 -TiO2 Ti电极 ,运用X射线衍射法、扫描电镜对电极表面膜的粒径、物相进行了表征。结果表明 ,控制反应条件 ,薄膜中二氧化钛晶型以锐钛矿型为主 ,粒径 45～ 5 0nm ,将其应用于光催化氧化水中的罗丹明B ,该电极对其降解有很好的光催化活性 ,同时 ,外加一定的偏压可以提高光催化氧化的效率     

DTRO工艺处理垃圾渗滤液的研究

垃圾渗滤液浓度高、成分复杂，难以处理，常规生化处理方法存在缺点，碟管式反渗透(DTRO)是针对垃圾渗滤液的水质特点而设计的，出水水质好，受进水水质影响很小，在国外的垃圾渗滤液处理中应用广泛。在分析DTRO工艺特点的基础上，探讨了两级DTRO工艺流程、特点、机理和浓缩液的处理方法，并论述了DTRO运行参数对膜片性能的影响。掌握系统运行和膜清洗时各项参数对膜性能的影响趋势，优化预处理工艺对降低处理成本，指导同类工艺的优化操作具有一定的参考价值。     

工业高浓度苯胺废水处理技术研究

染料厂、农药厂、制药厂等工业都会产生含有高浓度苯胺的废水，处理苯胺废水的方法较多，本文通过实验的方式着重研究了膜萃取法处理高浓度苯胺废水，并通过分析实验结果得出了相应结论。     

Removal of arsenic from contaminated groundwater by solar-driven membrane distillation

Experimental investigations were carried out on removal of arsenic from contaminated groundwater by employing a new flat-sheet cross flow membrane module fitted with a hydrophobic polyvinylidenefluoride (PVDF) microfiltration membrane. The new design of the solar-driven membrane module in direct contact membrane distillation (DCMD) configuration successfully produced almost 100 per cent arsenic-free water from contaminated groundwater in a largely fouling-free operation while permitting high fluxes under reduced temperature polarization. For a feed flow rate of 0.120 m³/h, the 0.13 μm PVDF membrane yielded a high flux of 74 kg/(m² h) at a feed water temperature of 40 °C and, 95 kg/m² h at a feed water temperature of 60 °C. The encouraging results show that the design could be effectively exploited in the vast arsenic-affected rural areas of South-East Asian countries blessed with abundant sunlight particularly during the critical dry season.     

浸没式MBR工艺在工程化应用中膜污染的三阶段特征研究

以国内某浸没式MBR再生水工程为研究对象,在次临界通量及恒抽吸流量运行条件下,系统跨膜压差表现为早期短暂升高、中期平稳上升及后期快速升高的三阶段特征。扫描电子显微镜(SEM)观察证明MBR系统在三阶段的膜污染层具有不同的水力学结构。结合各阶段膜污染的理论分析,将临界跨膜压差值(TMP)作为膜系统体外维护清洗的控制点,实现膜系统的长期稳定运行。     

Co-application of energy uncoupling and ultrafiltration in sludge treatment: Evaluations of sludge reduction,supernatant recovery and membrane fouling control

• Effects of metabolic uncouplers addition on sludge reduction were carried out. • TCS addition effectively inhibited ATP synthesis and reduced sludge yield. • The effluent quality such as TOC and ammonia deteriorated but not significantly. • Suitable dosage retarded biofouling during sludge water recovery by UF membrane. Energy uncoupling is often used for sludge reduction because it is easy to operate and does not require a significant amount of extra equipments (i.e. no additional tank required). However, over time the supernatant extracted using this method can deteriorate, ultimately requiring further treatment. The purpose of this study was to determine the effect of using a low-pressure ultrafiltration membrane process for sludge water recovery after the sludge had undergone an energy uncoupling treatment (using 3,3′,4′,5-tetrachlorosalicylanilide (TCS)). Energy uncoupling was found to break apart sludge floc by reducing extracellular polymeric substances (EPS) and adenosine triphosphate (ATP) content. Analysis of supernatant indicated that when energy uncoupling and membrane filtration were co-applied and the TCS dosage was below 30 mg/L, there was no significant deterioration in organic component removal. However, ammonia and phosphate concentrations were found to increase as the concentration of TCS added increased. Additionally, due to low sludge concentrations and EPS contents, addition of 30–60 mg/L TCS during sludge reduction increased the permeate flux (two times higher than the control) and decreased the hydraulic reversible and cake layer resistances. In contrast, high dosage of TCS aggravated membrane fouling by forming compact fouling layers. In general, this study found that the co-application of energy uncoupling and membrane filtration processes represents an effective alternative method for simultaneous sludge reduction and sludge supernatant recovery.     

污水中抗生素生化去除研究进展

综述了活性污泥法、膜生物反应器、人工湿地等国内外常见抗生素生化去除方法的优缺点与适用范围,通过工艺对比发现,膜生物反应器和人工湿地能有效去除污水中的抗生素,活性污泥法对抗生素的去除率不高,且选择性较强;污泥龄和水力停留时间对抗生素的去除率有着显著影响,多数情况下反应器的运行改进也能提高抗生素的去除效果。针对抗生素污染问题,提出了采取加强型的复合式处理工艺、开展分区研究、出台相关管理政策等建议。