Removal of natural organic matter from different raw waters by ion exchange resins
- Lobanga, K.P., Haarhoff, J., Van Staden, S.
- Authors: Lobanga, K.P. , Haarhoff, J. , Van Staden, S.
- Date: 2011
- Subjects: Water - Purification - Adsorption , Water - Purification - Organic compounds removal , Carbon, Activated , Organic water pollutants
- Language: English
- Type: Conference proceedings
- Identifier: http://ujcontent.uj.ac.za8080/10210/374006 , http://hdl.handle.net/10210/17189 , uj:15856 , Lobanga, K.P., Haarhoff, J., and Van Staden, S.J. (2011) Removal of natural organic matter from different raw waters by ion exchange resins. 2nd Young Water Professionals of Southern Africa Conference, Pretoria, South Africa, 4-5 July 2011.
- Description: Abstract Most South African water treatment plants utilise surface water sources whose quality is continuously compromised due to high return flows and indirect reuse. The water treatment methods used by these plants are based on the removal of turbidity, various chemical contaminants and microorganisms. Recently introduced NOM regulations added the removal of natural organic matter (NOM) as a priority. Basic anion exchange resins can be used to remove NOM. This paper reports this method of NOM removal. Due to the variability in the composition of NOM in natural raw water, eight surface waters were collected throughout South Africa as representative of the different water types of the country. Two resins were used for this study, a strong and a weak – base anion resins. They were chosen for their availability and competitive price at the local market. NOM removal in raw water was quantified by measuring ultraviolet absorbance at a wavelength of 254 nm (UV 254), dissolved organic carbon (DOC) and by calculating the specific ultraviolet absorbance (SUVA) at 254 nm. The Freundlich equilibrium isotherms were also fitted and the Freundlich parameters determined.
- Full Text:
- Authors: Lobanga, K.P. , Haarhoff, J. , Van Staden, S.
- Date: 2011
- Subjects: Water - Purification - Adsorption , Water - Purification - Organic compounds removal , Carbon, Activated , Organic water pollutants
- Language: English
- Type: Conference proceedings
- Identifier: http://ujcontent.uj.ac.za8080/10210/374006 , http://hdl.handle.net/10210/17189 , uj:15856 , Lobanga, K.P., Haarhoff, J., and Van Staden, S.J. (2011) Removal of natural organic matter from different raw waters by ion exchange resins. 2nd Young Water Professionals of Southern Africa Conference, Pretoria, South Africa, 4-5 July 2011.
- Description: Abstract Most South African water treatment plants utilise surface water sources whose quality is continuously compromised due to high return flows and indirect reuse. The water treatment methods used by these plants are based on the removal of turbidity, various chemical contaminants and microorganisms. Recently introduced NOM regulations added the removal of natural organic matter (NOM) as a priority. Basic anion exchange resins can be used to remove NOM. This paper reports this method of NOM removal. Due to the variability in the composition of NOM in natural raw water, eight surface waters were collected throughout South Africa as representative of the different water types of the country. Two resins were used for this study, a strong and a weak – base anion resins. They were chosen for their availability and competitive price at the local market. NOM removal in raw water was quantified by measuring ultraviolet absorbance at a wavelength of 254 nm (UV 254), dissolved organic carbon (DOC) and by calculating the specific ultraviolet absorbance (SUVA) at 254 nm. The Freundlich equilibrium isotherms were also fitted and the Freundlich parameters determined.
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Optimized coagulation for the removal of natural organic matter (NOM) from low alkalinity : hardness South African raw waters
- Dlamini, S.P., Van Staden, S., Haarhoff, J., Mamba, B.B.
- Authors: Dlamini, S.P. , Van Staden, S. , Haarhoff, J. , Mamba, B.B.
- Date: 2011
- Subjects: Drinking water - Purification - South Africa , Water - Purification - Coagulation - South Africa , Organic water pollutants - South Africa
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/17129 , uj:15845 , Dlamini, S.P. et al. (2011) Optimized coagulation for the removal of natural organic matter (NOM) from low alkalinity : hardness South African raw waters. In: Proceedings of the 2nd Young Water Professionals of Southern Africa Conference, Pretoria, South Africa, 3-5 July 2011, 11p.
- Description: Abstract This example is to demonstrate the layout of the first page of a paper for Water Science and Technology. The authors’ family names should be given in full; their forenames should be given as abbreviations. The title, authors' names and addresses should be indented 1.5 cm from the left-hand margin of the text area; the abstract is indented 1.5 cm from both margins. The abstract itself, set in 10 pt type like the authors' addresses, should start about 9 cm down from the top of the text area. It should be a single paragraph. Please do not make reference citations in the abstract and keep within the limit of 200 words. It is followed by your choice of up to six keywords, listed alphabetically and separated by semi-colons.
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- Authors: Dlamini, S.P. , Van Staden, S. , Haarhoff, J. , Mamba, B.B.
- Date: 2011
- Subjects: Drinking water - Purification - South Africa , Water - Purification - Coagulation - South Africa , Organic water pollutants - South Africa
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/17129 , uj:15845 , Dlamini, S.P. et al. (2011) Optimized coagulation for the removal of natural organic matter (NOM) from low alkalinity : hardness South African raw waters. In: Proceedings of the 2nd Young Water Professionals of Southern Africa Conference, Pretoria, South Africa, 3-5 July 2011, 11p.
- Description: Abstract This example is to demonstrate the layout of the first page of a paper for Water Science and Technology. The authors’ family names should be given in full; their forenames should be given as abbreviations. The title, authors' names and addresses should be indented 1.5 cm from the left-hand margin of the text area; the abstract is indented 1.5 cm from both margins. The abstract itself, set in 10 pt type like the authors' addresses, should start about 9 cm down from the top of the text area. It should be a single paragraph. Please do not make reference citations in the abstract and keep within the limit of 200 words. It is followed by your choice of up to six keywords, listed alphabetically and separated by semi-colons.
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A practical course on filter assessment for water treatment plant operators
- Van Staden, S.J., Haarhoff, J.
- Authors: Van Staden, S.J. , Haarhoff, J.
- Date: 2011
- Subjects: Water - Purification - Membrane filtration , Water treatment plants , Plant operators, Training of
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/17261 , uj:15863 , Van Staden, S.J. & Haarhoff, J. (2011) A practical course on filter assessment for water treatment plant operators. In: Proceedings of the 2nd Young Water Professionals of Southern Africa Conference, Pretoria, South Africa, 4-5 July 2011, 5 p.
- Description: Abstract Training of treatment plant operators in South Africa faces some special problems. First, the political changes in the past decade led to a complete restructuring of local government. An integral part of the ongoing restructuring process is an aggressive programme for black economic empowerment. This brought many new faces into local government without the practical experience to which the water industry is accustomed, coupled with a massive displacement of technical skills from the sector. From 1989, the number of civil engineering professionals (engineers, technologists, technicians) has dwindled from 22 / 100000 of the population to 3 / 100000 of the population in 2007 (Lawless, 2007). Second, the Water Services Act (1997) of South Africa shifted the burden of water supply squarely on the shoulders of district and local municipalities. The dilution of skills, coupled with increasing responsibility, makes it clear that the water sector in South Africa will have to train itself out of this predicament. As a result, the quality and focus of training programmes, especially at the operator level, is receiving renewed attention. This paper shares the experience of the development and refinement of a training course for filter assessment for operators over the past eight years.
- Full Text:
- Authors: Van Staden, S.J. , Haarhoff, J.
- Date: 2011
- Subjects: Water - Purification - Membrane filtration , Water treatment plants , Plant operators, Training of
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/17261 , uj:15863 , Van Staden, S.J. & Haarhoff, J. (2011) A practical course on filter assessment for water treatment plant operators. In: Proceedings of the 2nd Young Water Professionals of Southern Africa Conference, Pretoria, South Africa, 4-5 July 2011, 5 p.
- Description: Abstract Training of treatment plant operators in South Africa faces some special problems. First, the political changes in the past decade led to a complete restructuring of local government. An integral part of the ongoing restructuring process is an aggressive programme for black economic empowerment. This brought many new faces into local government without the practical experience to which the water industry is accustomed, coupled with a massive displacement of technical skills from the sector. From 1989, the number of civil engineering professionals (engineers, technologists, technicians) has dwindled from 22 / 100000 of the population to 3 / 100000 of the population in 2007 (Lawless, 2007). Second, the Water Services Act (1997) of South Africa shifted the burden of water supply squarely on the shoulders of district and local municipalities. The dilution of skills, coupled with increasing responsibility, makes it clear that the water sector in South Africa will have to train itself out of this predicament. As a result, the quality and focus of training programmes, especially at the operator level, is receiving renewed attention. This paper shares the experience of the development and refinement of a training course for filter assessment for operators over the past eight years.
- Full Text:
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