Wastewater membrane separation technology

Thermex is a commercially available ex situ technology that is based on the use of membrane separation technology for preconcentrating plant radioactive wastewater and evaporation for drying the preconcentrates. The technology is designed to minimize the volume of waste that would require storage or disposal. 

Today, membrane separation technologies are widely used in many areas of water and wastewater treatment. Membrane processes can be used to produce potable water from... 

Stamatelatou, K., KopsaheUs, A., BUka, P. S., Paraskeva, C. A., Lyberatos, G. (2009). Anaerobic digestion of oUve mill wastewater in a periodic anaerobic baffled reactor (PABR) followed by further effluent purification via membrane separation technologies. Journal of Chemical Technology and Biotechnology, 84, 909—917. 

Membrane separators, 23 795-796 Membrane/sonication/wet oxidation (MEMSONIWO) systems in wastewater treatment, 25 911-912 Membrane systems, as advanced wastewater treatment, 25 909 Membrane technology, 25 796-852 applications for, 25 824-848 in controlled drug delivery,... 

Kislik VS and Eyal AM. Comparison of hybrid liquid membrane (HLM) and aqueous hybrid liquid membrane (AHLM) technologies in separation of heavy metals from wastewaters. In Proceedings of Abstracts EURO-MEMBRANE-2000, Israel pp. 237-238. 

Zhang XJ, Liu J, Fan Q, Lian Q, Zhang X, and Lu T. Industrial application of liquid membrane separation for phenolic wastewater treatment. In Li NN, Strathmann H, eds. Separation Technology, New York United Engineering Trustees, 1988 190-203. 

Membrane technology may become essential if zero-discharge mills become a requirement or legislation on water use becomes very restrictive. The type of membrane fractionation required varies according to the use that is to be made of the treated water. This issue is addressed in Chapter 35, which describes the apphcation of membrane processes in the pulp and paper industry for treatment of the effluent generated. Chapter 36 focuses on the apphcation of membrane bioreactors in wastewater treatment. Chapter 37 describes the apphcations of hollow fiber contactors in membrane-assisted solvent extraction for the recovery of metallic pollutants. The apphcations of membrane contactors in the treatment of gaseous waste streams are presented in Chapter 38. Chapter 39 deals with an important development in the strip dispersion technique for actinide recovery/metal separation. Chapter 40 focuses on electrically enhanced membrane separation and catalysis. Chapter 41 contains important case studies on the treatment of effluent in the leather industry. The case studies cover the work carried out at pilot plant level with membrane bioreactors and reverse osmosis. Development in nanofiltration and a case study on the recovery of impurity-free sodium thiocyanate in the acrylic industry are described in Chapter 42. 

The purpose of this chapter is to review the critical factors contributing to MBR process performance and to report recent advancements in key areas. Coverage is directed toward membrane separation bioreactors, although recent developments in membrane biofilm reactors will be briefly discussed. Much of the current MBR research effort is directed toward municipal wastewater applications however, substantial commonalities exist with respect to industrial wastewater appheation and where possible, reference is made to the specific aspects of the technology when applied to the treatment of industrial wastewater. 

Many different processes are now in use in engineering practice, e.g. distillation, extraction, crystallization, freezing, etc. However, these were far less successful when applied to the disposal of wastewater or to the recirculation of the components from the wastewater stream. A real prerequisite to facilitate the introduction of no-waste technologies is the use of membrane separation. 

C. Visvanathan, R. Ben Aim, and K. Parameshwaran, Membrane Separation Bioreactors for Wastewater Treatment, Critical Reviews in Environmental Science and Technology, 30(1), 1-48 (2000). 

Diffusion dialysis, as a membrane separation, is considered as a suitable technological alternative for the treatment of wastewaters containing mineral acids and metal ions. This technology based on the differences in concentration of the... 

Chapter 9 demonstrates how membrane modification based on the incorporation of inorganic/organic particles and multilayer membranes has a promising future in pervaporation (PV). This separation process continues to emerge as a feasible separation technology for many different and diverse applications from purification of solvents to wastewater treatment. As a proven method of separation at low temperatures and pressures, further development and modification of membranes are likely to be undertaken to improve PV application in food processing. In addition, the modification of PV membranes to improve the removal of a variety of organic compounds to clean wastewater streams also holds much promise. 

Eakhru l-Razi, A. (1994). Ultrafiltration membrane separation for anaerobic wastewater treatment. Water Science and Technology, 30(12), 321-327. 

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