Iron removal at the drinking water treatment plant of Luleå
The study is aimed to find a suitable way to treat the iron contaminated well 21 in the Luleå water Treatment Plant in Gäddvik, Luleå. Rapid sand filtration was established to treat water pumped from the well. A pilot filter was constructed in October, 2007. The filter was run continuously and the f...
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2008
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ftluleatu:oai:DiVA.org:ltu-56696 2023-05-15T17:09:06+02:00 Iron removal at the drinking water treatment plant of Luleå Faisal, Ahmed Fahim 2008 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-56696 eng eng http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-56696 Local d724d1de-7810-48eb-b6b6-13224be59f73 info:eu-repo/semantics/openAccess Technology Water treatment Iron removal Turbidity Sand filtration Pilot filter Teknik Student thesis info:eu-repo/semantics/bachelorThesis text 2008 ftluleatu 2022-10-25T20:53:03Z The study is aimed to find a suitable way to treat the iron contaminated well 21 in the Luleå water Treatment Plant in Gäddvik, Luleå. Rapid sand filtration was established to treat water pumped from the well. A pilot filter was constructed in October, 2007. The filter was run continuously and the filtrate was examined in the laboratory in different interval. The 8 months long experiment reveals the efficiency of the filter in removing iron. The period runs from the beginning of spring, winter and the starting of summer. There is a large difference in surface water temperature during this period. There are several wells in the plant contributing to the supply system. Most of them are free from iron problem. Unfortunately the well 21 is contaminated with iron and has never been contributing to the main plant due to severe iron contamination. The probable reason for this contamination is also discussed in this study depending on existing data from previous surveys. The performance of the filter in removing iron is satisfactory throughout the run. However sometimes even the pumped raw water had low concentration of iron. But even though the iron concentration is very high in raw water the filter was capable of removing 95% of it. The filter was run at different flow rates facilitating different retention times. In all cases the iron removal was quite successful. The filtrate had iron concentration lower than the standard value fixed by EPA allowable in drinking water. The plant has been suffering from turbidity problem since long time. The turbidity values from some wells are higher than the standard values (0.5 NTU). In this experiment the same problem occurred with turbidity. The filtrate water turbidity is well higher than the allowable limit. Different options like pH adjustment or aeration or the combination of both was applied to reduce turbidity although those were not quite successful. The relation of iron concentration with turbidity is also discussed in this study depending on the test results. ... Bachelor Thesis Luleå Luleå Luleå Luleå University of Technology Publications (DiVA) Gäddvik ENVELOPE(22.033,22.033,65.583,65.583) |
institution |
Open Polar |
collection |
Luleå University of Technology Publications (DiVA) |
op_collection_id |
ftluleatu |
language |
English |
topic |
Technology Water treatment Iron removal Turbidity Sand filtration Pilot filter Teknik |
spellingShingle |
Technology Water treatment Iron removal Turbidity Sand filtration Pilot filter Teknik Faisal, Ahmed Fahim Iron removal at the drinking water treatment plant of Luleå |
topic_facet |
Technology Water treatment Iron removal Turbidity Sand filtration Pilot filter Teknik |
description |
The study is aimed to find a suitable way to treat the iron contaminated well 21 in the Luleå water Treatment Plant in Gäddvik, Luleå. Rapid sand filtration was established to treat water pumped from the well. A pilot filter was constructed in October, 2007. The filter was run continuously and the filtrate was examined in the laboratory in different interval. The 8 months long experiment reveals the efficiency of the filter in removing iron. The period runs from the beginning of spring, winter and the starting of summer. There is a large difference in surface water temperature during this period. There are several wells in the plant contributing to the supply system. Most of them are free from iron problem. Unfortunately the well 21 is contaminated with iron and has never been contributing to the main plant due to severe iron contamination. The probable reason for this contamination is also discussed in this study depending on existing data from previous surveys. The performance of the filter in removing iron is satisfactory throughout the run. However sometimes even the pumped raw water had low concentration of iron. But even though the iron concentration is very high in raw water the filter was capable of removing 95% of it. The filter was run at different flow rates facilitating different retention times. In all cases the iron removal was quite successful. The filtrate had iron concentration lower than the standard value fixed by EPA allowable in drinking water. The plant has been suffering from turbidity problem since long time. The turbidity values from some wells are higher than the standard values (0.5 NTU). In this experiment the same problem occurred with turbidity. The filtrate water turbidity is well higher than the allowable limit. Different options like pH adjustment or aeration or the combination of both was applied to reduce turbidity although those were not quite successful. The relation of iron concentration with turbidity is also discussed in this study depending on the test results. ... |
format |
Bachelor Thesis |
author |
Faisal, Ahmed Fahim |
author_facet |
Faisal, Ahmed Fahim |
author_sort |
Faisal, Ahmed Fahim |
title |
Iron removal at the drinking water treatment plant of Luleå |
title_short |
Iron removal at the drinking water treatment plant of Luleå |
title_full |
Iron removal at the drinking water treatment plant of Luleå |
title_fullStr |
Iron removal at the drinking water treatment plant of Luleå |
title_full_unstemmed |
Iron removal at the drinking water treatment plant of Luleå |
title_sort |
iron removal at the drinking water treatment plant of luleå |
publishDate |
2008 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-56696 |
long_lat |
ENVELOPE(22.033,22.033,65.583,65.583) |
geographic |
Gäddvik |
geographic_facet |
Gäddvik |
genre |
Luleå Luleå Luleå |
genre_facet |
Luleå Luleå Luleå |
op_relation |
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-56696 Local d724d1de-7810-48eb-b6b6-13224be59f73 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766065024711786496 |