Water management An intelligent water management system is essential to operate a modern paper mill. The main focus of such a management system will be: Avoidance of overflows Avoidance of additional fresh water consumption Constant process conditions (temperature, pH, COD, …) during continuous and discontinuous operation Minimised effluent water flow Minimised heat loss Consistent efficiency
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- Introduction to forest-based bioeconomy
- Wood products
- Natural fibre products
- Man-made bio-based fibre products
- Bio-based nanomaterials
- Recycled fibre
- Pulping and biorefining
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Water management
After reading this article you will..
- know the main focus of a water management system.
- be able to describe which single steps are important to implement a water management system.
- know the main sources for COD input in the production process.
- be able to discuss how the COD level in the PM loop can be minimised if the process operates with the same spec. effluent flow.
- know how exorbitant COD increase caused by closing the water loops can be avoided.
Recycled fibre
- Legislation
- Sources and quality of paper for recycling
- Recyclability of paper and board products – Deinkability
- Recycling versus recyclability
- Technical aspects of recycling
- Relevance of recyclability
- Repulpability and deinkability
- Deinkability test methods
- EPRC deinkability assessment
- Deinkability of different printed products
- Removability of adhesive applications
- EPRC assessment on removability of adhesive applications in graphic paper products
- Unit operations and equipment in recycled fibre processing
- Design of processes
- Design principles for stock preparation processes
- Process design for graphical grades, news print
- Process design for tissue
- Process design for board and packaging grades
- Reject and Sludge handling for graphical and tissue applications
- Reject and Sludge handling for board and packaging applications
- Water management
- Additives
- Deinking
- Bleaching of deinked pulp
- Process water treatment
- Sticky control – detackification
- Enzymatic solution for recycled fibres
- Papermaking potential of recycled fibre
- Differences between virgin and recycled fibre
- Repeated (manifold) recycling experiments
- Multiple papermaking with recycled fibres
- Modelling of fibre age distribution
- Special request of recycled fibre furnish in papermaking
- Effects of recycled fibre in papermaking
- Challenges of increased recycled fibre utilisation
Authors & references
Authors:
Falk Albrecht, Sebastian Schuster, Fanny Bader, Eckhard Gutsmuths
References:
- Stark, H.; Schwarz, M.1994. Papier aus Österreich Vol. 6, p. 3
- Hamm, U.; Göttsching, L. 1995. Inhaltsstoffe von Holz und Holzwerkstoffen. Wochenblatt für Papierfabrikation. Vol. 123, no. 10, p. 444.
- Reinholdt, B.; 2006. iCON – Quality control for increased productivity in stock preparation plants right up to paper machines, Wochenblatt für Papierfabrikation. Vol. 134, no 5, p. 220.
- Reinboth, F.; Krause, R.; Mayer, M.; Kallich, C.; 2008. Das bringt eMPC in der Deinkinganlage Stora Enso Sachsen Mill – Erfahrungsbericht über Methode, Technik und Aufwand sowie monetären und immateriellen Nutzen. Wochenblatt für Papierfabrikation Vol. 136, no 11–12, p. 674.
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This page has been updated 17.11.2021
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