Analysis of membrane distillation crystallization system for high salinity brine treatment with zero discharge using Aspen flowsheet simulation

An environmentally friendly membrane distillation crystallization (MDC) system is proposed to treat high salinity reverse osmosis (RO) brine with zero discharge. The raw brine from RO desalination plants is concentrated in direct contact MD to produce pure water, and the concentrate is then crysta...

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Main Authors: Wang, Rong, Wicaksana, Filicia, Yang, Xing, Fane, Anthony Gordon, Guan, Guoqiang
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2013
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Online Access:https://hdl.handle.net/10356/100769
http://hdl.handle.net/10220/10041
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1007692020-03-07T11:43:46Z Analysis of membrane distillation crystallization system for high salinity brine treatment with zero discharge using Aspen flowsheet simulation Wang, Rong Wicaksana, Filicia Yang, Xing Fane, Anthony Gordon Guan, Guoqiang School of Civil and Environmental Engineering DRNTU::Engineering::Environmental engineering::Water treatment An environmentally friendly membrane distillation crystallization (MDC) system is proposed to treat high salinity reverse osmosis (RO) brine with zero discharge. The raw brine from RO desalination plants is concentrated in direct contact MD to produce pure water, and the concentrate is then crystallized to produce solid salts without secondary disposal. A comprehensive analysis on the MDC system has been performed by Aspen flowsheet simulation with a user customized MD model, which was verified by our previous experiments. Simulation results reveal that the total energy consumption is negligibly changed by integration of a crystallization unit into the system, as over 97.8% of the energy was consumed by the heater of the MD subsystem. Higher inlet temperatures of both the feed and permeate streams in the MD module can improve the thermal efficiency. The introduction of a heat recovery unit in the MDC system, to recover the heat in the permeate for feed preheating, can increase the gain output ratio (GOR) by 28%. Moreover, it is shown that in a hollow fiber MD module, the permeate yield is a linear function of the length-to-radius ratio of the membrane module, and a longer MD module can reduce the specific energy consumption. A relatively high feed flow rate is preferred to avoid the potential problem of crystal blockage in the MD module. Accepted version 2013-06-04T03:19:55Z 2019-12-06T20:27:53Z 2013-06-04T03:19:55Z 2019-12-06T20:27:53Z 2012 2012 Journal Article Guan, G., Wang, R., Wicaksana, F., Yang, X., & Fane, A. G. (2012). Analysis of membrane distillation crystallization system for high salinity brine treatment with zero discharge using Aspen flowsheet simulation. Industrial & engineering chemistry research, 51(41), 13405-13413. https://hdl.handle.net/10356/100769 http://hdl.handle.net/10220/10041 10.1021/ie3002183 173047 en Industrial & engineering chemistry research © 2012 American Chemical Society. This is the author created version of a work that has been peer reviewed and accepted for publication by Industrial & Engineering Chemistry Research, American Chemical Society. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1021/ie3002183]. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Environmental engineering::Water treatment
spellingShingle DRNTU::Engineering::Environmental engineering::Water treatment
Wang, Rong
Wicaksana, Filicia
Yang, Xing
Fane, Anthony Gordon
Guan, Guoqiang
Analysis of membrane distillation crystallization system for high salinity brine treatment with zero discharge using Aspen flowsheet simulation
description An environmentally friendly membrane distillation crystallization (MDC) system is proposed to treat high salinity reverse osmosis (RO) brine with zero discharge. The raw brine from RO desalination plants is concentrated in direct contact MD to produce pure water, and the concentrate is then crystallized to produce solid salts without secondary disposal. A comprehensive analysis on the MDC system has been performed by Aspen flowsheet simulation with a user customized MD model, which was verified by our previous experiments. Simulation results reveal that the total energy consumption is negligibly changed by integration of a crystallization unit into the system, as over 97.8% of the energy was consumed by the heater of the MD subsystem. Higher inlet temperatures of both the feed and permeate streams in the MD module can improve the thermal efficiency. The introduction of a heat recovery unit in the MDC system, to recover the heat in the permeate for feed preheating, can increase the gain output ratio (GOR) by 28%. Moreover, it is shown that in a hollow fiber MD module, the permeate yield is a linear function of the length-to-radius ratio of the membrane module, and a longer MD module can reduce the specific energy consumption. A relatively high feed flow rate is preferred to avoid the potential problem of crystal blockage in the MD module.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Wang, Rong
Wicaksana, Filicia
Yang, Xing
Fane, Anthony Gordon
Guan, Guoqiang
format Article
author Wang, Rong
Wicaksana, Filicia
Yang, Xing
Fane, Anthony Gordon
Guan, Guoqiang
author_sort Wang, Rong
title Analysis of membrane distillation crystallization system for high salinity brine treatment with zero discharge using Aspen flowsheet simulation
title_short Analysis of membrane distillation crystallization system for high salinity brine treatment with zero discharge using Aspen flowsheet simulation
title_full Analysis of membrane distillation crystallization system for high salinity brine treatment with zero discharge using Aspen flowsheet simulation
title_fullStr Analysis of membrane distillation crystallization system for high salinity brine treatment with zero discharge using Aspen flowsheet simulation
title_full_unstemmed Analysis of membrane distillation crystallization system for high salinity brine treatment with zero discharge using Aspen flowsheet simulation
title_sort analysis of membrane distillation crystallization system for high salinity brine treatment with zero discharge using aspen flowsheet simulation
publishDate 2013
url https://hdl.handle.net/10356/100769
http://hdl.handle.net/10220/10041
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