Anaerobic Treatment Of Pulp And Paper Wastewater
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Anaerobic Technology In Pulp And Paper Industry
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Author : Pratima Bajpai
language : en
Publisher: Springer
Release Date : 2017-03-14
Anaerobic Technology In Pulp And Paper Industry written by Pratima Bajpai and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-14 with Science categories.
This book presents a state-of-the-art report on the treatment of pulp and paper industry effluents using anaerobic technology. It covers a comprehensive range of topics, including the basic reasons for anaerobic treatment, comparison between anaerobic and aerobic treatment, effluent types suitable for anaerobic treatment, design considerations for anaerobic treatment, anaerobic reactor configurations applied for treatment of pulp and paper industry effluents, present status of anaerobic treatment in pulp and paper industry, economic aspects, examples of full scale installations and future trends.
Anaerobic Digestion In The Kraft Pulp And Paper Industry
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Author : Eva-Maria Ekstrand
language : en
Publisher: Linköping University Electronic Press
Release Date : 2019-05-07
Anaerobic Digestion In The Kraft Pulp And Paper Industry written by Eva-Maria Ekstrand and has been published by Linköping University Electronic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05-07 with categories.
The pulp and paper industry is a large producer of wastewater and sludge, putting high pressure on waste treatment. In addition, more rigorous environmental legislation for pollution control and demands to increase the use of renewable energy have put further pressure on the pulp and paper industry’s waste treatment, where anaerobic digestion (AD) and the production of methane could pose a solution. Kraft pulping makes up 80% of the world production of virgin wood pulp, thus, the wastewaters from this sector represent a large unused potential for methane production. There are three main types of substrates available for AD at pulp and paper mills, the wastewaters, the primary sludge/fibre sludge, and the waste activated sludge. AD treatment of these streams has been associated with several challenges, such as the presence of inhibiting compounds or low degradability during AD. The aim of this thesis was to experimentally address these challenges and potentials, focusing on wastes from kraft mills. Methane potential batch tests showed that many wastewater streams still posed challenges to AD, but the alkaline elemental chlorine-free bleaching stream and the condensate effluents had good methane potentials. Further, the methane potential of kraft mill fibre sludge was high, and co-digestion of kraft mill fibre sludge and waste activated sludge was feasible in stirred tank reactors with sludge recirculation. By increasing the organic loading in a pilot-scale activated sludge facility and thereby lowering the sludge age, the degradability of the waste activated sludge was improved. The higher wastewater treatment capacity achieved by this method provides an opportunity for the mills to increase their pulp and paper production. Further, by dewatering the digestate after AD and returning the liquid to the activated sludge treatment, costs for nutrient supplementation can be reduced. In conclusion, the thesis shows that AD of wastes from the kraft pulp and paper industry was feasible and carried many benefits regarding the generation of methane as a renewable energy carrier, improved wastewater treatment and reduced costs. Different strategies on how AD may be implemented in the kraft pulp and paper industry were formulated and discussed. Produktionen av pappers- och massa genererar stora mängder avloppsvatten, vilket ställer höga krav på en effektiv vattenrening. Därtill har skärpta regler för utsläpp till vatten och luft tillsammans med en ökad efterfrågan på användning av förnyelsebar energi ytterligare ökat trycket på vattenreningen inom pappers-och massaindustrin, där anaerob nedbrytning med metanproduktion som följd skulle kunna utgöra en lösning. Produktionen av sulfatmassa (en kemiskt kokad pappersmassa) utgör 80% av den globala nyproduktionen av massa, vilket innebär att avloppsvatten från denna sektor representerar en stor outnyttjad potential för metanproduktion. Det finns huvudsakligen tre typer av substrat tillgängliga för rötning vid pappers- och massabruk, avloppsvatten, primärslam/fiberslam, och aktivt slam/överskottsslam. Flera utmaningar är kopplade till anaerob nedbrytning av dess strömmar, såsom förekomst av inhiberande ämnen eller låg nedbrytbarhet. Målet med avhandlingen var att bemöta dessa utmaningar, med ett särskilt fokus på behandling av avloppsströmmar från sulfatbruk. Metanpotentialtester visade att många av avloppsvattnen fortfarande var svåra att behandla med anaerob nedbrytning, men att alkaliska blekeriströmmar och kondensatströmmar vid sulfatbruk visade lovande metanpotentialer. Massafiber från sulfatoch sulfitbruk uppvisade höga metanpotentialer, och en stabil kontinuerlig samrötning av fiberslam och aktivt slam från sulfatbruk uppnåddes vid hög organisk belastning och låg hydraulisk uppehållstid i omrörda tankreaktorer med slamåterföring. Resultaten visade vidare att den låga nedbrytbarheten hos aktivt slam kunde bemötas genom att sänka slamåldern i den luftade anläggningen, med högre metanpotential i slammet som följd. Via denna metodik erhålles en högre vattenreningskapacitet, vilket innebär att bruken kan öka sin produktion av papper och massa. Dessutom kan rötresten avvattnas och den kvarvarande vätskan återföras till den luftade anläggningen för att minska behovet av näringstillsatser. Sammanfattningsvis visar avhandlingen att anaerob nedbrytning av avloppsströmmar från sulfatbruk var fullt möjlig och innebar många fördelar, i form av metanproduktion, förbättrad kapacitet för vattenrening och reducerade kostnader jämfört med dagens teknik. Olika möjligheter för implementering av anaerob teknik vid sulfatbruk har också formulerats och diskuterats.
Anaerobic Treatment Of Pulp And Paper Wastewater
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Author : Chester Qixing Yang
language : en
Publisher:
Release Date : 1989
Anaerobic Treatment Of Pulp And Paper Wastewater written by Chester Qixing Yang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.
Anaerobic Treatment Of Pulp And Paper Mill Effluent
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Author : Jan Sarel Marthinus Venter
language : en
Publisher:
Release Date : 19??
Anaerobic Treatment Of Pulp And Paper Mill Effluent written by Jan Sarel Marthinus Venter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 19?? with Anaerobiosis categories.
Pulp And Paper Industry
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Author : Pratima Bajpai
language : en
Publisher: Elsevier
Release Date : 2017-02-25
Pulp And Paper Industry written by Pratima Bajpai and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-02-25 with Technology & Engineering categories.
Pulp and Paper Industry: Emerging Waste Water Treatment Technologies is the first book which comprehensively reviews this topic. Over the past decade, pulp and paper companies have continued to focus on minimizing fresh water use and effluent discharges as part of their move towards sustainable operating practices. Three stages—basic conservation, water reuse and water recycling—provide a systematic approach to water resource management. Implementing these stages requires increased financial investment and better utilization of water resources. The ultimate goal for pulp and paper companies is to have effluent-free factories with no negative environmental impact. The traditional water treatment technologies that are used in paper mills are not able to remove recalcitrant contaminants. Therefore, advanced water treatment technologies are being included in industrial wastewater treatment chains aiming to either improve water biodegradability or its final quality. This book discusses various measures being adopted by the pulp and paper industry to reduce water consumption and treatment techniques to treat wastewater to recover it for reuse. The book also examines the emerging technologies for treatment of effluents and presents examples of full-scale installations. Provides thorough and in-depth coverage of advanced treatment technologies which will benefit the industry personnel, pulp manufacturers, researchers and advanced students Presents new treatment strategies to improve water reuse and fulfill the legislation in force regarding wastewater discharge Presents viable solutions for pulp and paper manufacturers in terms of wastewater treatment Presents examples of full-scale installations to help motivate mill personnel to incorporate new technologies
Treating Wastewater From Pulp And Paper Mills With Anaerobic Technology
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Author :
language : en
Publisher:
Release Date : 1988
Treating Wastewater From Pulp And Paper Mills With Anaerobic Technology written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.
Pulp and paper manufacturing generates large volumes of wastewater that can be toxic to aquatic life. Some foreign research has suggested that anaerobic treatment could be an effective and less costly alternative to conventional pollution control systems for some pulp and paper mills. This note presents information on the selection and operation of a pilot study performed at a pulp and paper mill complex operated by Macmillan Bloedel in Sturgeon Falls, Ontario, which produces 200 tonnes per day of corrugating medium and 100 tonnes per day of exterior hardboard siding. The wastewaters produced in the complex are discharged into the Sturgeon River and although the effluents are treated to remove suspended solids, the mill complex is not equipped with a chemical recovery system.
Anaerobic Treatment Of Forest Industry Wastewaters
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Author : Pentti Rantala
language : en
Publisher: Elsevier Science & Technology
Release Date : 1985
Anaerobic Treatment Of Forest Industry Wastewaters written by Pentti Rantala and has been published by Elsevier Science & Technology this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Science categories.
The forestry industry is a major source of water pollution in countries producing pulp and paper, and treatment of this wastewater needs to be achieved both economically and efficiently. The application of the anaerobic process, which has been shown to have distinct advantages over conventional wastewater treatment in certain situations, has generated growing interest. This symposium enabled the exchange of views and experiences on anaerobic treatment of forest industry wastewaters and was a forum for the presentation of the latest research efforts in this field.
Anaerobic Treatment Of In Mill Wastewaters Collected From A Pulp And Paper Mill
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Author : Minqing (Ivy) Yang
language : en
Publisher:
Release Date : 2008
Anaerobic Treatment Of In Mill Wastewaters Collected From A Pulp And Paper Mill written by Minqing (Ivy) Yang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
The objective of this research was to evaluate the potential of anaerobic treatment of in-mill wastewaters collected from a pulp and paper mill, by examining the effect of the effluent type and concentration on degradability and initial rate of biogas production, and studying the impacts of blending streams. A batch assay called the Biochemical Methane Potential (BMP) assay was the main methodology for this research. The assay results indicated that the BCTMP effluent and the Condensate were the best streams for anaerobic treatment because of their relatively high degradability (>80%) and initial rates, while the Dewatering Softwood Effluent was the worst stream with the lowest degradability (& sim;30%) and initial rates. The hardwood effluent was shown to have better treatment than the softwood effluent from the same process. In addition, the biogas production was found to be additive in the blended samples, suggesting that blending was feasible from the degradability perspective.
Anaerobic Treatment Of Industrial Wastewaters
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Author : Michael F. Torpy
language : en
Publisher: Noyes Publications
Release Date : 1988-01-01
Anaerobic Treatment Of Industrial Wastewaters written by Michael F. Torpy and has been published by Noyes Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988-01-01 with Science categories.
Describes several types of anaerobic treatment for municipal and industrial wastewaters.
Anaerobic Batch Treatment Of Carbon Dioxide In Pulp And Paper Effluent
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Author : Xuejiao Jiang
language : en
Publisher:
Release Date : 2013
Anaerobic Batch Treatment Of Carbon Dioxide In Pulp And Paper Effluent written by Xuejiao Jiang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.