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Hansson, H., Kaczala, F., Amaro, A., Marques, M. & Hogland, W. (2015). Advanced Oxidation Treatment of Recalcitrant Wastewater from a Wood-Based Industry: a Comparative Study of O3 and O3/UV. Water, Air and Soil Pollution, 226(7), Article ID 229.
Open this publication in new window or tab >>Advanced Oxidation Treatment of Recalcitrant Wastewater from a Wood-Based Industry: a Comparative Study of O3 and O3/UV
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2015 (English)In: Water, Air and Soil Pollution, ISSN 0049-6979, E-ISSN 1573-2932, Vol. 226, no 7, article id 229Article in journal (Refereed) Published
Abstract [en]

Ozone and ozone-based advanced oxidation processes were applied for the treatment of a recalcitrant wastewater generated by wood-based industries that contains different inorganic and organic constituents and high chemical oxygen demand (COD) varying between 3,400 and 4,000 mg/L. The investigation used a tubular ozone reactor combined with an UV reactor designed for different hydraulic retention times. The dependent variables addressed to evaluate the treatment efficiency were the reduction of COD and total organic carbon (TOC) and the biodegradability of the treated effluent based on respirometric studies using activated sludge from a wastewater treatment. The results showed that even though ozonation alone at acid pH promoted COD and TOC reductions of 65 and 31 % respectively, a decrease in the biodegradability was observed. The most effective treatment (COD and TOC reductions of 93 and 43 %, respectively) was obtained when applying ozone combined with UV light at basic pH. The ozone-UV combination was capable of increasing the amount of readily available COD by 75 % with an additional reduction of TOC by 60 %. In conclusion, ozonation at low pH effectively reduces the COD content in wastewater generated by the wood-based industry; however, in order to combine advanced oxidation with biological process, ozone combined with UV is recommended.

Keywords
Advanced oxidation processes, Ozone, Ozone/UV, Industrial wastewater, Wood-based industry, Surface response, Rotatable central composite design
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-45794 (URN)10.1007/s11270-015-2468-5 (DOI)000357690100008 ()2-s2.0-84934343945 (Scopus ID)
Available from: 2015-08-20 Created: 2015-08-19 Last updated: 2018-05-17Bibliographically approved
Svensson, H., Hansson, H. & Hogland, W. (2015). Combined Ozone and Biological Treatment of Oak Wood Leachate. CLEAN - Soil, Air, Water, 43(4), 598-604
Open this publication in new window or tab >>Combined Ozone and Biological Treatment of Oak Wood Leachate
2015 (English)In: CLEAN - Soil, Air, Water, ISSN 1863-0650, E-ISSN 1863-0669, Vol. 43, no 4, p. 598-604Article in journal (Refereed) Published
Abstract [en]

In the present study, we investigated the possibility of treating oak wood leachate with a combined ozone and biological treatment. Wood leachate is characterized by high amounts of organic carbon and is reported as being toxic to aquatic organisms. Ozone was used as a pre-treatment before using aerobic degradation. The biological treatment was applied for seven days and evaluated using head-space respirometry. Target pollutant in this investigation was polyphenols in combination with more general parameters, such as chemical oxygen demand (COD), total organic carbon (TOC) and colour. A custom made bubble column reactor was used, 1.5 L of wood leachate was exposed to 0-4 g/L of ozone, corresponding to a specific ozone dose between 0.7-7 g/L O-3/g of initial COD. Oak wood leachate was found to be easily degraded by ozone, with >90% of polyphenols degraded. COD was degraded by 73%, TOC by 61% and colour by 97% by ozone. Furthermore, a positive correlation between biodegradation and ozone pre-treatment was found.

Keywords
Biodegradability, Organic carbon, Storm-water, Wastewater treatment
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-46002 (URN)10.1002/clen.201400141 (DOI)000353384600018 ()2-s2.0-84928209617 (Scopus ID)
Available from: 2015-09-01 Created: 2015-09-01 Last updated: 2017-12-04Bibliographically approved
Svensson, H., Hansson, H. & Hogland, W. (2015). Determination of Nutrient Deficiency in Stormwater from the Wood Industry for Biological Treatment. CLEAN - Soil, Air, Water, 43(1), 38-43
Open this publication in new window or tab >>Determination of Nutrient Deficiency in Stormwater from the Wood Industry for Biological Treatment
2015 (English)In: CLEAN - Soil, Air, Water, ISSN 1863-0650, E-ISSN 1863-0669, Vol. 43, no 1, p. 38-43Article in journal (Refereed) Published
Abstract [en]

The efficiency of biological treatment systems in degrading organic matter is affected by both the available nutrients and the efficiency of the microbial organisms that carry out the degradation. This study assesses whether a wetland treatment system treating stormwater from a wood industrial site faced nutrient deficiency or lacked efficient microbes, and whether addressing these possible problems could enhance the degradation of organic matter in the system. The stormwater was a mix of industrial stormwater, irrigation water and leachate from woodchip piles. The industry mainly processes pedunculate oak, which is known to create a leachate high in polyphenols. This water is currently treated in a pilot-scale wetland system and an aerated lagoon. To study whether the treatability could be enhanced by addition of nutrients (phosphorus, nitrogen, micronutrients), headspace respirometry was used. The effect of adding microbes from a paper mill activated sludge system was also evaluated. Our results showed that all nutrient additions had a positive effect on the treatability of the stormwater. In particular, the addition of nitrogen showed a 12% rise in chemical oxygen demand reduction over 336h. However, addition of paper mill activated sludge did not enhance the degradation of organic matter; instead, a toxic effect of the stormwater was shown.

Keywords
Constructed wetland treatment system, Oak, Respirometry, Wood leachate
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-40907 (URN)10.1002/clen.201300621 (DOI)000348142700005 ()2-s2.0-84921440875 (Scopus ID)
Available from: 2015-03-17 Created: 2015-03-17 Last updated: 2018-05-17Bibliographically approved
Hansson, H., Kaczala, F., Marques, M. & Hogland, W. (2015). Photo-Fenton and Fenton Oxidation of Recalcitrant Wastewater from the Wooden Floor Industry. Water environment research, 87(6), 491-497
Open this publication in new window or tab >>Photo-Fenton and Fenton Oxidation of Recalcitrant Wastewater from the Wooden Floor Industry
2015 (English)In: Water environment research, ISSN 1061-4303, E-ISSN 1554-7531, Vol. 87, no 6, p. 491-497Article in journal (Refereed) Published
Abstract [en]

There is a need for development of on-site wastewater treatment technologies suitable to "dry-process'' industries, such as the wooden floor sector. Due to the nature of their activities, these industries generate low volumes of highly polluted and recalcitrant wastewaters due to washing and cleaning surfaces and machinery. Advanced oxidation processes such as Fenton and photo-Fenton are potentially feasible options for the treatment of wastewaters with not easily biodegradable pollutants. The wastewater from a wooden floor industry with initial COD value of 4956 mg/L and TOC value of 2730 mg/L was treated with Fenton (Fe/H2O2) and photo-Fenton (Fe/H2O2/UV) applying a 2-level full-factorial experimental design. The highest removals of COD and TOC (79% and 62% respectively) were achieved when photo-Fenton was applied. In conclusion, Fenton and photo-Fenton are promising treatment options for these highly recalcitrant wastewaters, photo-Fenton being a more promising option according to the results.

Keywords
photo-Fenton, Fenton, industrial wastewater, wooden floor industry
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-46282 (URN)10.2175/106143015X14212658614559 (DOI)000355936700002 ()2-s2.0-84944057656 (Scopus ID)
Available from: 2015-09-14 Created: 2015-09-14 Last updated: 2018-05-17Bibliographically approved
Hansson, H., Marques, M., Laohaprapanon, S. & Hogland, W. (2014). Electrocoagulation coupled to activated carbon sorption/filtration for treatment of cleaning wastewaters from wood-based industry. Desalination and Water Treatment, 52(28-30), 5243-5251
Open this publication in new window or tab >>Electrocoagulation coupled to activated carbon sorption/filtration for treatment of cleaning wastewaters from wood-based industry
2014 (English)In: Desalination and Water Treatment, ISSN 1944-3994, E-ISSN 1944-3986, Vol. 52, no 28-30, p. 5243-5251Article in journal (Refereed) Published
Abstract [en]

The objective of this investigation was to study the use of a coupled treatment (electrocoagulation(EC) and sorption/filtration treatment) with different sequencing to reduce the organic pollutantsmeasured as chemical oxygen demand (COD) of five highly polluted wastewater streamsgenerated after washing surfaces and machinery in the wooden floor industry and to evaluate,how different sequencing of these treatment units affects the overall system efficiency. On thebasis of preliminary studies, an EC reactor (1.0 L) was constructed with monopolar electrodes inparallel connection in an array of four Al electrodes with surface area of 93.2 cm2and an appliedcurrent density of 161 A m–2. This reactor was coupled to a sorption/filtration unit with coalactivated carbon. The EC reactor was tested in two different sequences (before and after the sorption/filtration unit). The overall COD reduction varied from 2% ± 0.5% to 77% ± 2.9%, dependingon the sequence and the treated wastewater stream. The best result from efficiency andoperational viewpoints was obtained with the EC reactor placed after the sorption/filtrationcolumn. The increase in efficiency is likely to be due to the removal by sorption in the activatedcarbon of compounds that interfere with EC. Additionally, as desired, the use of EC before thesorption unit extended the activated carbon lifetime.

Place, publisher, year, edition, pages
London: Taylor & Francis Group, 2014
Keywords
Cleaning wastewater; Electrocoagulation; Activated carbon; Wood-based industry
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science; Environmental Science, Environmental technology
Identifiers
urn:nbn:se:lnu:diva-27182 (URN)10.1080/19443994.2013.808582 (DOI)000341653300008 ()
Projects
Triple Helix Collaboration on Industrial Water Conservation in Småland and the Island
Funder
Knowledge Foundation
Available from: 2013-06-26 Created: 2013-06-26 Last updated: 2019-01-23Bibliographically approved
Trondman, M., Andersson, C., Barmark, M., Bouakaz, L., Hiltunen, L., Krantz, S., . . . Voyer, A. (2014). Ett utbildningspolitiskt dilemma: mångkulturell inkorporering och skolprestation (1ed.). In: Resultatdialog 2014: (pp. 218-228). Stockholm: Vetenskapsrådet
Open this publication in new window or tab >>Ett utbildningspolitiskt dilemma: mångkulturell inkorporering och skolprestation
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2014 (Swedish)In: Resultatdialog 2014, Stockholm: Vetenskapsrådet , 2014, 1, p. 218-228Chapter in book (Other (popular science, discussion, etc.))
Place, publisher, year, edition, pages
Stockholm: Vetenskapsrådet, 2014 Edition: 1
National Category
Sociology
Research subject
Social Sciences, Sociology
Identifiers
urn:nbn:se:lnu:diva-38368 (URN)978-91-7307-247-2 (ISBN)
Funder
Swedish Research Council
Available from: 2014-11-27 Created: 2014-11-27 Last updated: 2018-05-17Bibliographically approved
Hansson, H. (2014). TREATMENT OF WASTEWATER GENERATED BY WOOD-BASED DRY INDUSTRIES: ADVANCED OXIDATION PROCESSES & ELECTROCOAGULATION. (Doctoral dissertation). Växjö/Kalmar: Linnaeus University Press
Open this publication in new window or tab >>TREATMENT OF WASTEWATER GENERATED BY WOOD-BASED DRY INDUSTRIES: ADVANCED OXIDATION PROCESSES & ELECTROCOAGULATION
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Wood is a material with an enormous number of applications. For decades, the development of wastewater treatment technologies tailored for the wood sector has focused on those industries that have water as an integral part of the industrial production, such as paper and pulp. However, there is a large and potentially growing sector that has been neglected, which is formed by industries in which water is not part of their production line, as for example, the wood floor and furniture industries (named wood-based dry industries). These industries still produces relatively low volumes of highly polluted wastewaters, with COD up to 30,000 mg/L, due to cleaning/washing procedure (named cleaning wastewaters). These cleaning wastewaters are often sent to the municipal wastewater treatment plant after dilution with potable water. Once there, recalcitrant pollutants are diluted and discharged into recipient water bodies or trapped in the municipal wastewater sludge. Another type of contaminated water these “dry industries” often generate in high volumes, and which is usually discharged with no previous treatment, is storm-water containing contaminants that have leached from large wood storage areas. The overall aim of this thesis was to increase the level of knowledge and competence and to present on-site wastewater treatment options for wood-based dry industries using the wood floor industry as a case-study, with a focus on combined treatment methods and solutions applicable to both the cleaning wastewater and storm-water. Among the treatment technologies investigated, electrocoagulation was studied both as a standalone treatment and combined with sorption using activated carbon. The combined treatment achieved a COD reduction of approximately 70%. Some advanced oxidation processes (AOP) were also studied: a COD reduction of approximately 70% was achieved by photo-Fenton, but the most successful AOP was ozone combined with UV light, were a COD reduction around 90% was achieved, with additional improvement in the biodegradability of the treated effluent. Ozone also proved to be effective in degrading organic compounds (approximately 70% COD reduction) and enhanced the biodegradability of the storm-water runoff from wood storage areas. The results have shown that the application of ozone can be considered an option for treatment of cleaning wastewaters and possibly for storm-water biodegradation enhancement.

Abstract [sv]

Trä är ett material med ett stort antal möjliga användningsområden. Inom träindustrin har utvecklingen av vattenbehandlingsmetoder varit inriktat på de branscher som har vatten som en del av produktionen, såsom papper- och massaindustrin. Men det finns en stor och potentiellt växande sektor inom träindustrin som har försummats, den utgörs av industrier som inte har vatten som en del av produktionen, t.ex. trägolv och trämöbel industrier. Trots detta så producerar dessa industrier fortfarande relativt kraftigt förorenade avloppsvatten med t.ex. COD-värden upp till 30000 mg/l men i relativt låga volymer. Dessa avloppsvatten uppkommer vid rengöring av maskiner och städning av lokaler, varefter de oftast efter utspädning med dricksvatten skickas till det kommunala reningsverket. Väl där späds det förorenade vattnet vidare ut med annat inkommande vatten men passerar dock till stor del obehandlat och släpps ut i mottagande vattendrag eller så fastnar föroreningarna i avloppsslamet. Dagvatten är en annan typ av förorenat vatten från dessa "torra industrier" som ofta genereras i stora volymer och innehåller föroreningar som lakats från de trämaterial som förvaras i de stora upplag som ofta förekommer vid denna typ av industrier. Det övergripande syftet med avhandlingen var att öka kunskapen och kompetensen för att kunna miljömässigt riktigt och ekonomiskt billigt behandla industriavloppsvatten lokalt på plats inom trävaruindustrin, genom att använda en trä-golvsindustri som fallstudie. Fokus lades på kombinerade behandlingsmetoder och lösningar som skulle kunna vara lämpliga både för industriavloppsvatten och dagvatten. Ett antal behandlingstekniker har undersökts; elektrokoagulering studerades både som en fristående behandling och i kombination med aktivt kol. Den kombinerade behandlingen gav en COD-reduktion på ungefär 70 %. Flera avancerade oxidationsprocesser (AOP) studerades också, och en COD-reduktion på cirka 70% uppnåddes med en kombination av UV-ljus och Fenton behandling. Den mest framgångsrika behandlingen var ozon i kombination med UV-ljus där en COD-reduktion runt 90 % uppnåddes varvid en avsevärd förbättring av den biologisk nedbrytbarhet på det behandlade avloppsvattenet erhölls. Ozon visade sig också vara effektivt för nedbrytning av organiska föreningar (ca 70% COD reduktion) och förbättrade den biologiska nedbrytbarheten av föroreningarna i dagvattnet från den studerade industrin. Resultaten har visat att ozon kan anses vara ett lämpligt alternativ för att behandla industriavloppsvatten inom trävarusektorn och möjligen för att öka den biologiska nedbrytbarheten av dagvattnet från dessa industrier

Place, publisher, year, edition, pages
Växjö/Kalmar: Linnaeus University Press, 2014. p. 63
Series
Linnaeus University Dissertations ; 186/2014
Keywords
Advanced oxidation processes; Electrocoagulation; Fenton; Industrial storm-water; Ozone; Respirometry assays; Wastewater; Wood floor industry.
National Category
Environmental Sciences
Research subject
Environmental Science, Environmental Chemistry
Identifiers
urn:nbn:se:lnu:diva-36437 (URN)978-91-87925-11-5 (ISBN)
Public defence
2014-09-12, Fullriggaren (B-135), Landgången 3, Kalmar, 09:00 (English)
Opponent
Supervisors
Projects
Integrated Approach for Handling of Industrial Wastewater and StormwaterTriple Helix Collaboration on Industrial Water Conservation in Småland and the Islands
Funder
Knowledge FoundationEU, FP7, Seventh Framework Programme, 00162890
Available from: 2014-08-21 Created: 2014-08-20 Last updated: 2016-11-02Bibliographically approved
Hansson, H., Kaczala, F., Marques, M. & Hogland, W. (2012). Photo-fenton and fenton oxidation of recalcitrant industrial wastewater. In: Eva Kumar, Joacim Rosenlund, Fabio Kaczala, William Hogland (Ed.), Proceedings / Linnaeus ECO-TECH 2012, international conference on natural sciences and environmental technologies for waste and wastewater treatment, remediation, emissions related to climate, environmental and economic effects ; the eighth International Conference on the Establishment of Cooperation between Companies and Institutions in the Nordic Countries, the Baltic Sea Region, and the World, November 26-28, 2012, Kalmar, Sweden: . Paper presented at Eco-Tech 2012, November 26-28, 2012, Kalmar (pp. 187). Linnaeus University
Open this publication in new window or tab >>Photo-fenton and fenton oxidation of recalcitrant industrial wastewater
2012 (English)In: Proceedings / Linnaeus ECO-TECH 2012, international conference on natural sciences and environmental technologies for waste and wastewater treatment, remediation, emissions related to climate, environmental and economic effects ; the eighth International Conference on the Establishment of Cooperation between Companies and Institutions in the Nordic Countries, the Baltic Sea Region, and the World, November 26-28, 2012, Kalmar, Sweden / [ed] Eva Kumar, Joacim Rosenlund, Fabio Kaczala, William Hogland, Linnaeus University , 2012, p. 187-Conference paper, Published paper (Other academic)
Place, publisher, year, edition, pages
Linnaeus University, 2012
Keywords
Photo-Fenton, Wastewater treatment
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-31062 (URN)978-91-86983-86-4 (ISBN)
Conference
Eco-Tech 2012, November 26-28, 2012, Kalmar
Projects
Triple Helix Collaboration on Industrial Water Conservation in Småland and the Islands
Note

There is a need for development of on-site wastewater treatment technologies suitable to “dry-process industries”, such as the wood-floor industry. Due to the nature of their activities, these industries generate lower volumes of highly polluted and recalcitrant wastewaters after cleaning and washing activities. Advanced oxidation processes, such as Fenton and photo-Fenton are potentially good options for treatment. Wastewater from a wood-floor industry with initial COD of 4956 mg/L and TOC of 2730 mg/L was treated with Fenton (Fe/H2O2) and photo-Fenton (Fe/H2O2/UV). The highest removal of COD and TOC (80% and 60% respectively) was achieved using photo-Fenton. 

Available from: 2013-12-09 Created: 2013-12-09 Last updated: 2016-11-17Bibliographically approved
Hansson, H., Kaczala, F., Marques, M. & Hogland, W. (2012). Photo-Fenton and Fenton Oxidation of Recalcitrant Industrial Wastewater Using Nanoscale Zero-Valent Iron. International Journal of Photoenergy (Online), 2012, Article ID 531076.
Open this publication in new window or tab >>Photo-Fenton and Fenton Oxidation of Recalcitrant Industrial Wastewater Using Nanoscale Zero-Valent Iron
2012 (English)In: International Journal of Photoenergy (Online), ISSN 1110-662X, E-ISSN 1687-529X, Vol. 2012, article id 531076Article in journal (Refereed) Published
Abstract [en]

There is a need for the development of on-site wastewater treatment technologies suitable for "dry-process industries," such as the wood-floor sector. Due to the nature of their activities, these industries generate lower volumes of highly polluted wastewaters after cleaning activities. Advanced oxidation processes such as Fenton and photo-Fenton, are potentially feasible options for treatment of these wastewaters. One of the disadvantages of the Fenton process is the formation of large amounts of ferrous iron sludge, a constraint that might be overcome with the use of nanoscale zero-valent iron (nZVI) powder. Wastewater from a wood-floor industry with initial COD of 4956 mg/L and TOC of 2730 mg/L was treated with dark-Fenton (nZVI/H2O2) and photo-Fenton (nZVI/H2O2/UV) applying a 2-level full-factorial experimental design. The highest removal of COD and TOC (80% and 60%, resp.) was achieved using photo-Fenton. The supply of the reactants in more than one dose during the reaction time had significant and positive effects on the treatment efficiency. According to the results, Fenton and mostly photo-Fenton are promising treatment options for these highly recalcitrant wastewaters. Future investigations should focus on optimizing treatment processes and assessing toxic effects that residual pollutants and the nZVI might have. The feasibility of combining advanced oxidation processes with biological treatment is also recommended.

National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-22709 (URN)10.1155/2012/531076 (DOI)000310294600001 ()2-s2.0-84868693861 (Scopus ID)
Available from: 2012-12-05 Created: 2012-12-05 Last updated: 2017-12-07Bibliographically approved
Hogland, W., Manandhar, D. R., Hansson, H., Svensson, H., Mårtensson, L. & Mathiasson, L. (2010). Environmental Observations of Solid Waste Management at High Altitude in Nepal: Case Study Along Trekking Route in Sagarmatha National Park. In: : (pp. 421-427).
Open this publication in new window or tab >>Environmental Observations of Solid Waste Management at High Altitude in Nepal: Case Study Along Trekking Route in Sagarmatha National Park
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2010 (English)Conference paper, Published paper (Refereed)
Keywords
Awareness, Research, Solid waste, Tourism, Trekking
National Category
Environmental Sciences
Research subject
Environmental Science, Environmental technology
Identifiers
urn:nbn:se:lnu:diva-13075 (URN)
Available from: 2011-06-27 Created: 2011-06-27 Last updated: 2016-11-02Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-4769-9472

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