Cargando…

Low- and High-Pressure Membrane Separation in the Production of Process Water for Coke Quenching

Although the time for operating mines and coking plants in many countries is coming to an end due to climate change, we must still ensure that the pollution generated by this source of the economy is minimized. Despite the several stages of treatment of the coke-oven effluent, completed with nitrifi...

Descripción completa

Detalles Bibliográficos
Autores principales: Trusek, Anna, Wajsprych, Maciej, Noworyta, Andrzej
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8705688/
https://www.ncbi.nlm.nih.gov/pubmed/34940439
http://dx.doi.org/10.3390/membranes11120937
_version_ 1784622008601935872
author Trusek, Anna
Wajsprych, Maciej
Noworyta, Andrzej
author_facet Trusek, Anna
Wajsprych, Maciej
Noworyta, Andrzej
author_sort Trusek, Anna
collection PubMed
description Although the time for operating mines and coking plants in many countries is coming to an end due to climate change, we must still ensure that the pollution generated by this source of the economy is minimized. Despite the several stages of treatment of the coke-oven effluent, completed with nitrification and denitrification processes preceding final sedimentation, the stream obtained does not meet the requirements of water for coke quenching. That is why the stream after biodegradation and sedimentation was treated on membrane units to ensure water reusing in the coking plant. As the subjected stream contained both solid and dissolved pollutants, a two-stage system was proposed: low- and high-pressure membrane filtration. Industrial modules were tested on pilot units operating under industrial plant conditions. In the case of the ultrafiltration process, all the tested ultrafiltration modules fulfilled the primary task. All of them separated almost completely the turbidities present in the stream, which would have disturbed the operation of the high-pressure plant. Considering the decrease in permeate flux and the possibility of cleaning, a PCI membrane made of PVDF tubes with a diameter of 12.5 mm and pore size of 20 μm was selected. Regarding the high-pressure membrane filtration, the reverse osmosis membrane was significantly better in the removal efficiency of both organic and inorganic dissolved substances. An operating pressure of 3 MPa was chosen for the system. Hence, membrane processes, which are not used as stand-alone treatment units for coke-oven effluents, function well as a final treatment stage.
format Online
Article
Text
id pubmed-8705688
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-87056882021-12-25 Low- and High-Pressure Membrane Separation in the Production of Process Water for Coke Quenching Trusek, Anna Wajsprych, Maciej Noworyta, Andrzej Membranes (Basel) Article Although the time for operating mines and coking plants in many countries is coming to an end due to climate change, we must still ensure that the pollution generated by this source of the economy is minimized. Despite the several stages of treatment of the coke-oven effluent, completed with nitrification and denitrification processes preceding final sedimentation, the stream obtained does not meet the requirements of water for coke quenching. That is why the stream after biodegradation and sedimentation was treated on membrane units to ensure water reusing in the coking plant. As the subjected stream contained both solid and dissolved pollutants, a two-stage system was proposed: low- and high-pressure membrane filtration. Industrial modules were tested on pilot units operating under industrial plant conditions. In the case of the ultrafiltration process, all the tested ultrafiltration modules fulfilled the primary task. All of them separated almost completely the turbidities present in the stream, which would have disturbed the operation of the high-pressure plant. Considering the decrease in permeate flux and the possibility of cleaning, a PCI membrane made of PVDF tubes with a diameter of 12.5 mm and pore size of 20 μm was selected. Regarding the high-pressure membrane filtration, the reverse osmosis membrane was significantly better in the removal efficiency of both organic and inorganic dissolved substances. An operating pressure of 3 MPa was chosen for the system. Hence, membrane processes, which are not used as stand-alone treatment units for coke-oven effluents, function well as a final treatment stage. MDPI 2021-11-27 /pmc/articles/PMC8705688/ /pubmed/34940439 http://dx.doi.org/10.3390/membranes11120937 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Trusek, Anna
Wajsprych, Maciej
Noworyta, Andrzej
Low- and High-Pressure Membrane Separation in the Production of Process Water for Coke Quenching
title Low- and High-Pressure Membrane Separation in the Production of Process Water for Coke Quenching
title_full Low- and High-Pressure Membrane Separation in the Production of Process Water for Coke Quenching
title_fullStr Low- and High-Pressure Membrane Separation in the Production of Process Water for Coke Quenching
title_full_unstemmed Low- and High-Pressure Membrane Separation in the Production of Process Water for Coke Quenching
title_short Low- and High-Pressure Membrane Separation in the Production of Process Water for Coke Quenching
title_sort low- and high-pressure membrane separation in the production of process water for coke quenching
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8705688/
https://www.ncbi.nlm.nih.gov/pubmed/34940439
http://dx.doi.org/10.3390/membranes11120937
work_keys_str_mv AT trusekanna lowandhighpressuremembraneseparationintheproductionofprocesswaterforcokequenching
AT wajsprychmaciej lowandhighpressuremembraneseparationintheproductionofprocesswaterforcokequenching
AT noworytaandrzej lowandhighpressuremembraneseparationintheproductionofprocesswaterforcokequenching