Impact of pre-treatment technologies on soil aquifer treatment
This study investigates the impact of pre-treatment options on the performances of soil columns simulating soil aquifer treatment (SAT). For this purpose a conventional activated sludge (CAS) process, a membrane bioreactor (MBR) and vertical flow reed beds were used as single units or in combination...
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doaj-aabaa2727e644b5fa374528bfdbee8012020-11-24T21:39:38ZengIWA PublishingJournal of Water Reuse and Desalination2220-13192408-93702017-03-017111010.2166/wrd.2016.163163Impact of pre-treatment technologies on soil aquifer treatmentA. Besançon0M. Pidou1P. Jeffrey2B. Jefferson3K. S. Le Corre4 Cranfield Water Science Institute, Cranfield University, Cranfield, Bedford, MK43 0AL, UK E-mail: k.s.lecorrepidou@cranfield.ac.uk Cranfield Water Science Institute, Cranfield University, Cranfield, Bedford, MK43 0AL, UK E-mail: k.s.lecorrepidou@cranfield.ac.uk Cranfield Water Science Institute, Cranfield University, Cranfield, Bedford, MK43 0AL, UK E-mail: k.s.lecorrepidou@cranfield.ac.uk Cranfield Water Science Institute, Cranfield University, Cranfield, Bedford, MK43 0AL, UK E-mail: k.s.lecorrepidou@cranfield.ac.uk Cranfield Water Science Institute, Cranfield University, Cranfield, Bedford, MK43 0AL, UK E-mail: k.s.lecorrepidou@cranfield.ac.uk This study investigates the impact of pre-treatment options on the performances of soil columns simulating soil aquifer treatment (SAT). For this purpose a conventional activated sludge (CAS) process, a membrane bioreactor (MBR) and vertical flow reed beds were used as single units or in combination before SAT. The influent and effluent from each treatment train were monitored over three successive 6-month periods, corresponding to changes in the operational conditions of the MBR and CAS units from 6 days' sludge retention time (SRT) to 12 and 20 days. All the columns acted as efficient polishing steps for solids and bacteria. The column receiving effluent from the CAS system running at 6 days' SRT also presented high total nitrogen and total phosphorus removals, but this column was also associated with the lowest infiltration rates over that period. While the quality of the effluent from the column following the CAS process increased over 18 months of operation, the effluent quality of the columns receiving MBR effluent degraded. No correlations were found between variations in SRT of the MBR and CAS processes and the columns' performances. Overall, all columns, except the one receiving CAS effluent, underwent a reduction in infiltration rate over 18 months.http://jwrd.iwaponline.com/content/7/1/1conventional activated sludgemembrane bioreactorreed bedssoil aquifer treatment |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
A. Besançon M. Pidou P. Jeffrey B. Jefferson K. S. Le Corre |
spellingShingle |
A. Besançon M. Pidou P. Jeffrey B. Jefferson K. S. Le Corre Impact of pre-treatment technologies on soil aquifer treatment Journal of Water Reuse and Desalination conventional activated sludge membrane bioreactor reed beds soil aquifer treatment |
author_facet |
A. Besançon M. Pidou P. Jeffrey B. Jefferson K. S. Le Corre |
author_sort |
A. Besançon |
title |
Impact of pre-treatment technologies on soil aquifer treatment |
title_short |
Impact of pre-treatment technologies on soil aquifer treatment |
title_full |
Impact of pre-treatment technologies on soil aquifer treatment |
title_fullStr |
Impact of pre-treatment technologies on soil aquifer treatment |
title_full_unstemmed |
Impact of pre-treatment technologies on soil aquifer treatment |
title_sort |
impact of pre-treatment technologies on soil aquifer treatment |
publisher |
IWA Publishing |
series |
Journal of Water Reuse and Desalination |
issn |
2220-1319 2408-9370 |
publishDate |
2017-03-01 |
description |
This study investigates the impact of pre-treatment options on the performances of soil columns simulating soil aquifer treatment (SAT). For this purpose a conventional activated sludge (CAS) process, a membrane bioreactor (MBR) and vertical flow reed beds were used as single units or in combination before SAT. The influent and effluent from each treatment train were monitored over three successive 6-month periods, corresponding to changes in the operational conditions of the MBR and CAS units from 6 days' sludge retention time (SRT) to 12 and 20 days. All the columns acted as efficient polishing steps for solids and bacteria. The column receiving effluent from the CAS system running at 6 days' SRT also presented high total nitrogen and total phosphorus removals, but this column was also associated with the lowest infiltration rates over that period. While the quality of the effluent from the column following the CAS process increased over 18 months of operation, the effluent quality of the columns receiving MBR effluent degraded. No correlations were found between variations in SRT of the MBR and CAS processes and the columns' performances. Overall, all columns, except the one receiving CAS effluent, underwent a reduction in infiltration rate over 18 months. |
topic |
conventional activated sludge membrane bioreactor reed beds soil aquifer treatment |
url |
http://jwrd.iwaponline.com/content/7/1/1 |
work_keys_str_mv |
AT abesancon impactofpretreatmenttechnologiesonsoilaquifertreatment AT mpidou impactofpretreatmenttechnologiesonsoilaquifertreatment AT pjeffrey impactofpretreatmenttechnologiesonsoilaquifertreatment AT bjefferson impactofpretreatmenttechnologiesonsoilaquifertreatment AT kslecorre impactofpretreatmenttechnologiesonsoilaquifertreatment |
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1725930206677434368 |