Evaluation of Activated Sludge with a Submerged Fixed Bed in the Removal of Phosphorus and Nitrogen Compounds from Hospital Wastewater
Aerobic treatment processes with fixed growths exhibit a high efficiency not only in the removal of organic materials and phosphorus but also in the nitrification process (conversion of ammonium to nitrate) in wastewater. The present study aims to evaluate the performance of activated sludge with a...
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Water and Wastewater Consulting Engineers Research Development
2015-07-01
|
Series: | آب و فاضلاب |
Subjects: | |
Online Access: | http://www.wwjournal.ir/article_7912_09248c5c7ca53bef39d388490a87b8d7.pdf |
id |
doaj-dacf07e31fb24426998f2ff7e7f5c8ea |
---|---|
record_format |
Article |
spelling |
doaj-dacf07e31fb24426998f2ff7e7f5c8ea2021-03-02T03:56:16ZengWater and Wastewater Consulting Engineers Research Developmentآب و فاضلاب1024-59362383-09052015-07-0126328367912Evaluation of Activated Sludge with a Submerged Fixed Bed in the Removal of Phosphorus and Nitrogen Compounds from Hospital Wastewatermeghdad pirsaheb0masoud moradi1Kiomars Sharafi2Assoc. Prof. of Environmental Health Eng., Kermanshah University of Medical Sciences, Kermanshah, IranPhD Student of Research Center for Environmental Determination of Health (RCEDH), Kermanshah University of Medical Sciences, Kermanshah, IranPhD Student of Environmental Health Eng., Kermanshah University of Medical Sciences, Kermanshah, IranAerobic treatment processes with fixed growths exhibit a high efficiency not only in the removal of organic materials and phosphorus but also in the nitrification process (conversion of ammonium to nitrate) in wastewater. The present study aims to evaluate the performance of activated sludge with a submerged fixed bed in the removal of phosphorus and nitrogen compounds from wastewater. For this purpose, a reactor was initially constructed and commissioned before the activated sludge with a submerged fixed bed was loaded. A total number of 225 samples were collected from the wastewater treatment plant at Farabi General Hospital in Kermanshah to evaluate the removal efficiency of ammonia nitrogen, total nitrogen, nitrite, nitrate, and phosphate over three different retention times (2.9 hours of aerobic and 1.1 hours of anaerobic operation; 3.6 hours ofaerobic and 1.4 hours of anaerobic operation; and 4 hours of aerobic and 1.5 hours of anaerobic operation). Phosphorus, ammonia nitrogen, nitrite, and nitrate measurements were performed according to the Standard methods 4500-P, 4500-NH3, 4500-NO2, and 4500-NO3, respectively. Results showed that the highest phosphorus removal (53%) was achieved with Phase III of the system (i.e., 4 hours of aerobic plus 1.5 hours of anaerobic operation) while the highest ammonia nitrogen removal (97%) and TKN (96%) were achieved in Phase II of the system (i.e., 3.6 hours of aerobic and 1.4 hours of anaerobic operation). Significant differences (Pvaluehttp://www.wwjournal.ir/article_7912_09248c5c7ca53bef39d388490a87b8d7.pdfhospital wastewaterBiofilmFixed Growth with The Submerged BedPhosphorusNitrogen Compounds |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
meghdad pirsaheb masoud moradi Kiomars Sharafi |
spellingShingle |
meghdad pirsaheb masoud moradi Kiomars Sharafi Evaluation of Activated Sludge with a Submerged Fixed Bed in the Removal of Phosphorus and Nitrogen Compounds from Hospital Wastewater آب و فاضلاب hospital wastewater Biofilm Fixed Growth with The Submerged Bed Phosphorus Nitrogen Compounds |
author_facet |
meghdad pirsaheb masoud moradi Kiomars Sharafi |
author_sort |
meghdad pirsaheb |
title |
Evaluation of Activated Sludge with a Submerged Fixed Bed in the Removal of Phosphorus and Nitrogen Compounds from Hospital Wastewater |
title_short |
Evaluation of Activated Sludge with a Submerged Fixed Bed in the Removal of Phosphorus and Nitrogen Compounds from Hospital Wastewater |
title_full |
Evaluation of Activated Sludge with a Submerged Fixed Bed in the Removal of Phosphorus and Nitrogen Compounds from Hospital Wastewater |
title_fullStr |
Evaluation of Activated Sludge with a Submerged Fixed Bed in the Removal of Phosphorus and Nitrogen Compounds from Hospital Wastewater |
title_full_unstemmed |
Evaluation of Activated Sludge with a Submerged Fixed Bed in the Removal of Phosphorus and Nitrogen Compounds from Hospital Wastewater |
title_sort |
evaluation of activated sludge with a submerged fixed bed in the removal of phosphorus and nitrogen compounds from hospital wastewater |
publisher |
Water and Wastewater Consulting Engineers Research Development |
series |
آب و فاضلاب |
issn |
1024-5936 2383-0905 |
publishDate |
2015-07-01 |
description |
Aerobic treatment processes with fixed growths exhibit a high efficiency not only in the removal of organic materials and phosphorus but also in the nitrification process (conversion of ammonium to nitrate) in wastewater. The present study aims to evaluate the performance of activated sludge with a submerged fixed bed in the removal of phosphorus and nitrogen compounds from wastewater. For this purpose, a reactor was initially constructed and commissioned before the activated sludge with a submerged fixed bed was loaded. A total number of 225 samples were collected from the wastewater treatment plant at Farabi General Hospital in Kermanshah to evaluate the removal efficiency of ammonia nitrogen, total nitrogen, nitrite, nitrate, and phosphate over three different retention times (2.9 hours of aerobic and 1.1 hours of anaerobic operation; 3.6 hours ofaerobic and 1.4 hours of anaerobic operation; and 4 hours of aerobic and 1.5 hours of anaerobic operation). Phosphorus, ammonia nitrogen, nitrite, and nitrate measurements were performed according to the Standard methods 4500-P, 4500-NH3, 4500-NO2, and 4500-NO3, respectively. Results showed that the highest phosphorus removal (53%) was achieved with Phase III of the system (i.e., 4 hours of aerobic plus 1.5 hours of anaerobic operation) while the highest ammonia nitrogen removal (97%) and TKN (96%) were achieved in Phase II of the system (i.e., 3.6 hours of aerobic and 1.4 hours of anaerobic operation). Significant differences (Pvalue |
topic |
hospital wastewater Biofilm Fixed Growth with The Submerged Bed Phosphorus Nitrogen Compounds |
url |
http://www.wwjournal.ir/article_7912_09248c5c7ca53bef39d388490a87b8d7.pdf |
work_keys_str_mv |
AT meghdadpirsaheb evaluationofactivatedsludgewithasubmergedfixedbedintheremovalofphosphorusandnitrogencompoundsfromhospitalwastewater AT masoudmoradi evaluationofactivatedsludgewithasubmergedfixedbedintheremovalofphosphorusandnitrogencompoundsfromhospitalwastewater AT kiomarssharafi evaluationofactivatedsludgewithasubmergedfixedbedintheremovalofphosphorusandnitrogencompoundsfromhospitalwastewater |
_version_ |
1724243445163229184 |