162 0

Optimization of operating variables in a pilot-scale reverse osmosis membrane process for reclamation of tunnel construction wastewater

Title
Optimization of operating variables in a pilot-scale reverse osmosis membrane process for reclamation of tunnel construction wastewater
Author
강석구
Keywords
Tunnel construction wastewater; Optimization; Reverse osmosis; Salt rejection; Permeate flux
Issue Date
2016-06
Publisher
TAYLOR & FRANCIS INC
Citation
DESALINATION AND WATER TREATMENT, v. 57, NO 26, Page. 12082-12089
Abstract
The goal of this study was to investigate the individual and combined effects of temperature, salinity, and pressure on permeate flux and salt rejection of the reverse osmosis (RO) process used for reclamation of tunnel construction wastewater. Regardless of changes in temperature, higher operating pressures enhanced both permeate flux and salt rejection, while effects of temperatures on performance varied depending on the operating pressures. Increasing temperatures to less than 35bar did not improve the permeate flux and salt rejection, while to more than 50bar led to higher rejection as well as more permeate flux of reclaimed wastewater. Based on analysis of model equations developed, the extent of flux and salt rejection required for reuse of the reclaimed wastewater occurred under different optimal conditions depending on variations in seasons and salinity of wastewater. In particular, it was necessary to add additional pressure exceeding 50bar or increase the temperature to over 20 degrees C when wastewater of more than 20 parts per thousand salinity flows into the treatment system. Adjustment of influential variables can provide an implementable approach to improve operation of the RO process as well as optimize a process for practical construction on-site applications.
URI
https://www.tandfonline.com/doi/full/10.1080/19443994.2015.1049406https://repository.hanyang.ac.kr/handle/20.500.11754/73124
ISSN
1944-3994; 1944-3986
DOI
10.1080/19443994.2015.1049406
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE