Modelling the loss of nitrification inhibitor dosed in water distribution systems subject to pipe corrosion
Copper sulphate dosed as a nitrifier inhibitor in water distribution systems has encountered dramatic loss due to iron pipe corrosion. Chosen as the representative of iron corrosion products, ferric hydroxide flocs at low concentration (<2mg/L) bulk water was found capable of removing dissolved c...
| Main Authors: | , |
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| Format: | Conference Paper |
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Engineers Australia
2012
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| Subjects: | |
| Online Access: | http://search.informit.com.au/documentSummary;dn=946470016799618;res=IELENG http://hdl.handle.net/20.500.11937/19629 |
| _version_ | 1848750086010437632 |
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| author | Zhan, Weixi Arumugam, Sathasivan |
| author2 | Not Listed |
| author_facet | Not Listed Zhan, Weixi Arumugam, Sathasivan |
| author_sort | Zhan, Weixi |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Copper sulphate dosed as a nitrifier inhibitor in water distribution systems has encountered dramatic loss due to iron pipe corrosion. Chosen as the representative of iron corrosion products, ferric hydroxide flocs at low concentration (<2mg/L) bulk water was found capable of removing dissolved copper via adsorption obeying Freundlich isotherm equation. The adsorption rate can be predicted using a modified Pseudo2second order equation. These two adsorption equations enabled the possibility of modelling dissolved copper loss in the field pipeline caused by iron corrosion. With a few reasonable hydraulic assumptions and corrosion patterns made, the established model succeeded in simulating copper loss occurring in the pipeline where copper dosing has been exercised. These findings and the model established shed light on identifying and quantifying the copper loss mechanism in the field and provide modelling tools to improve the nitrifier inhibition strategy for the long term protection of chloramine in the water distribution system. |
| first_indexed | 2025-11-14T07:31:14Z |
| format | Conference Paper |
| id | curtin-20.500.11937-19629 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:31:14Z |
| publishDate | 2012 |
| publisher | Engineers Australia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-196292017-01-30T12:14:50Z Modelling the loss of nitrification inhibitor dosed in water distribution systems subject to pipe corrosion Zhan, Weixi Arumugam, Sathasivan Not Listed nitrification water-pipes--corrosion drinking water--contamination water-distribution Copper sulphate dosed as a nitrifier inhibitor in water distribution systems has encountered dramatic loss due to iron pipe corrosion. Chosen as the representative of iron corrosion products, ferric hydroxide flocs at low concentration (<2mg/L) bulk water was found capable of removing dissolved copper via adsorption obeying Freundlich isotherm equation. The adsorption rate can be predicted using a modified Pseudo2second order equation. These two adsorption equations enabled the possibility of modelling dissolved copper loss in the field pipeline caused by iron corrosion. With a few reasonable hydraulic assumptions and corrosion patterns made, the established model succeeded in simulating copper loss occurring in the pipeline where copper dosing has been exercised. These findings and the model established shed light on identifying and quantifying the copper loss mechanism in the field and provide modelling tools to improve the nitrifier inhibition strategy for the long term protection of chloramine in the water distribution system. 2012 Conference Paper http://hdl.handle.net/20.500.11937/19629 http://search.informit.com.au/documentSummary;dn=946470016799618;res=IELENG Engineers Australia restricted |
| spellingShingle | nitrification water-pipes--corrosion drinking water--contamination water-distribution Zhan, Weixi Arumugam, Sathasivan Modelling the loss of nitrification inhibitor dosed in water distribution systems subject to pipe corrosion |
| title | Modelling the loss of nitrification inhibitor dosed in water distribution systems subject to pipe corrosion |
| title_full | Modelling the loss of nitrification inhibitor dosed in water distribution systems subject to pipe corrosion |
| title_fullStr | Modelling the loss of nitrification inhibitor dosed in water distribution systems subject to pipe corrosion |
| title_full_unstemmed | Modelling the loss of nitrification inhibitor dosed in water distribution systems subject to pipe corrosion |
| title_short | Modelling the loss of nitrification inhibitor dosed in water distribution systems subject to pipe corrosion |
| title_sort | modelling the loss of nitrification inhibitor dosed in water distribution systems subject to pipe corrosion |
| topic | nitrification water-pipes--corrosion drinking water--contamination water-distribution |
| url | http://search.informit.com.au/documentSummary;dn=946470016799618;res=IELENG http://hdl.handle.net/20.500.11937/19629 |