scholarly journals A New Approach for Membrane Process Concentrate Management: Electrodialysis Bipolar Membrane Systems-A Short Communication

2020 ◽  
Author(s):  
Taner Yonar
Keyword(s):  
Short Communication ◽  
Solution Technique ◽  
Advanced Treatment ◽  
Potential Solution ◽  
Membrane Systems ◽  
Bipolar Membrane ◽  
New Approach ◽  
Treatment Technologies ◽  
Heavy Pollution ◽  
Concentrate Management

In most cases traditional and advanced treatment technologies transfers and concentrates the pollutants from one phase to other phase. However, nowadays, these concentrated flows containing heavy pollution are rapidly moving away from being manageable. In particular, membrane concentrate flows await immediate solutions to this issue. Electrodialysis Bipolar Membrane (EDBM) Processes are becoming a serious and potential solution technique for similar concentrate streams. In this chapter, principles and potentials of EDBM processes for the recycling or recovery of membrane concentrates are discussed.

New approach for description of sorption and swelling phenomena in liquid + polymer membrane systems

2017 ◽  
Vol 179 ◽  
pp. 475-485 ◽  
Author(s):  
Alena Randová ◽  
Lidmila Bartovská ◽  
Štěpán Hovorka ◽  
Tomáš Bartovský ◽  
Pavel Izák ◽  
...  
Keyword(s):  
Polymer Membrane ◽  
Membrane Systems ◽  
New Approach ◽  
Liquid Polymer

scholarly journals The Impact of Advanced Treatment Technologies on the Energy Use in Satellite Water Reuse Plants

Water ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 366 ◽  
Author(s):  
Jonathan R. Bailey ◽  
Sajjad Ahmad ◽  
Jacimaria R. Batista
Keyword(s):  
Energy Consumption ◽  
Water Reuse ◽  
Energy Use ◽  
Additional Treatment ◽  
Advanced Treatment ◽  
World Population ◽  
Water Reclamation ◽  
Treatment Processes ◽  
Treatment Technologies ◽  
The Impact

With an ever-increasing world population and the resulting increase in industrialization and agricultural practices, depletion of one of the world’s most important natural resources, water, is inevitable. Water reclamation and reuse is the key to protecting this natural resource. Water reclamation using smaller decentralized wastewater treatment plants, known as satellite water reuse plants (WRP), has become popular in the last decade. Reuse plants have stricter standards for effluent quality and require a smaller land footprint (i.e., real estate area). They also require additional treatment processes and advanced treatment technologies. This greatly increases the energy consumption of an already energy intensive process, accentuating even more the nexus between energy use and wastewater processing. With growing concerns over the use of nonrenewable energy sources and resulting greenhouse gas (GHG) emissions, WRPs are in need of energy evaluations. This paper contrasts the energy consumption of both conventional and advanced treatment processes in satellite WRPs. Results of this research provide a means for engineers and wastewater utilities to evaluate unit processes based on energy consumption as well as a foundation for making decisions regarding the sustainability of using advanced treatment technologies at reuse facilities.

Conventional and advanced treatment technologies for palm oil mill effluents: a systematic literature review

2020 ◽  
pp. 1-19
Author(s):  
G. Yashni ◽  
Adel Al-Gheethi ◽  
Radin Maya Saphira Radin Mohamed ◽  
Siti Nor Hidayah Arifin ◽  
Siti Nor Aishah Mohd Salleh
Keyword(s):  
Literature Review ◽  
Systematic Literature Review ◽  
Palm Oil ◽  
Advanced Treatment ◽  
Treatment Technologies ◽  
Palm Oil Mill

Advanced Treatment Technologies in the Remediation of Seleniferous Drainage Waters and Sediments

2004 ◽  
Vol 18 (1) ◽  
pp. 19-42 ◽  
Author(s):  
W.T. Frankenberger, Jr. ◽  
C. Amrhein ◽  
T.W.M. Fan ◽  
D. Flaschi ◽  
J. Glater ◽  
...  
Keyword(s):  
Advanced Treatment ◽  
Treatment Technologies ◽  
Drainage Waters

Networks, Kin, and Social Support

2020 ◽  
pp. 466-479
Author(s):  
G. Robin Gauthier
Keyword(s):  
Social Support ◽  
Life Course ◽  
Family Structure ◽  
Family Relationships ◽  
Network Theory ◽  
Potential Solution ◽  
New Approach ◽  
Definition Of ◽  
Network Approaches ◽  
The Life Course

Family relationships and the emotional and instrumental exchanges embedded within them are among the most important sources of social support available to individuals throughout the life course. This chapter provides an overview of three approaches to family research that conceptualize families as networks. The basic idea throughout the chapter is that family structure is not a sufficient proxy for a person’s access to social support, but network approaches offer a potential solution. First, the chapter discusses approaches that render the language of families as systems into configurations of network structures, with a focus on how to measure the capacity for social support embedded within them. The discussion then turns to research that employs a more inclusive understanding of family, widening the definition of what “counts” as kin. The chapter ends with a discussion of a new approach to measuring family relationships rooted in a network theory of social roles.

New spectral Lanczos decomposition method for induction modeling in arbitrary 3-D geometry

Geophysics ◽  
1999 ◽  
Vol 64 (3) ◽  
pp. 701-706 ◽  
Author(s):  
Vladimir L. Druskin ◽  
L. A. Knizhnerman ◽  
Ping Lee
Keyword(s):  
Maxwell’S Equations ◽  
Decomposition Method ◽  
Maxwell's Equations ◽  
New Method ◽  
Preconditioned Conjugate Gradient ◽  
Solution Technique ◽  
New Approach ◽  
Discrete Fourier Transforms ◽  
Induction Logging ◽  
The Cost

Traditional resistivity tools are designed to function in vertical wells. In horizontal well environments, the interpretation of resistivity logs becomes much more difficult because of the nature of 3-D effects such as highly deviated bed boundaries and invasion. The ability to model these 3-D effects numerically can greatly facilitate the understanding of tool response in different formation geometries. Three‐dimensional modeling of induction tools requires solving Maxwell’s equations in a discrete setting, either finite element or finite difference. The solutions of resulting discretized equations are computationally expensive, typically on the order of 30 to 60 minutes per log point on a workstation. This is unacceptable if the 3-D modeling code is to be used in interpreting induction logs. In this paper we propose a new approach for solutions to Maxwell’s equations. The new method is based on the spectral Lanczos decomposition method (SLDM) with Krylov subspaces generated from the inverse powers of the Maxwell operator. This new approach significantly speeds up the convergence of standard SLDM for the solution of Maxwell’s equations while retaining the advantages of standard SLDM such as the ability of solving for multiple frequencies and eliminate completely spurious modes. The cost of evaluating powers of the matrix inverse of the stiffness operator is effectively equivalent to the cost of solving a scalar Poisson’s equation. This is achieved by a decomposition of the stiffness operator into the curl‐free and divergence‐free projections. The solution of the projections can be computed by discrete Fourier transforms (DFT) and preconditioned conjugate gradient iterations. The convergence rate of the new method improves as frequency decreases, which makes it more attractive for low‐frequency applications. We apply the new solution technique to model induction logging in geophysical prospecting applications, giving rise to two orders of magnitude convergence improvement over the standard Krylov subspace approach and more than an order of magnitude speed‐up in terms of overall execution time. This makes it feasible to routinely use 3-D modeling for model‐based interpretation, a breakthrough in induction logging and interpretation.

Reality or myth: “Advanced wastewater treatment technologies cannot be cost competitive with conventional treatment processes”

2011 ◽  
Vol 6 (1) ◽  
Author(s):  
Ali R. Ahmadi Motlagh ◽  
Stephen Lacy ◽  
Madan Arora ◽  
Jim Ross ◽  
Jeff Misenhimer
Keyword(s):  
Wastewater Treatment ◽  
Conventional Treatment ◽  
Treatment Plant ◽  
Advanced Treatment ◽  
Recycled Water ◽  
Treatment Technology ◽  
Treatment Processes ◽  
Treatment Technologies ◽  
Two Alternatives

With shortage of water becoming a major concern in many areas, use of recycled water is a necessity for a growing number of municipalities. This paper describes a case study in which two alternatives were considered for upgrading an existing wastewater treatment plant with the goal of producing recycled water. The first alternative consisted of conventional secondary and tertiary unit processes while the second alternative included the advanced treatment technology of membrane bioreactor (MBR). Also, two alternatives were evaluated for disinfection of recycled water; chlorine gas and UV system. The more advanced treatment technologies (MBR + UV), which produce the higher quality recycled water, resulted in higher cost. The paper discusses the design and project execution approaches as how the more expensive advanced treatment processes were made cost competitive with the conventional treatment processes.

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