Flotation Flotation clarifiers employ small air bubbles to carry suspended solids to the surface (Figure 1). The air is supplied by pumping into the clarifier a portion (5–20 %) of the clarified effluent or dispersion water made from fresh water. Dispersion water is prepared by bringing water to a pressure (4–6 bar) by means
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Flotation
After reading this article you will..
- be able to explain how flotation works.
Content
Environmental control and management
- Environmental control
- Environmental management
- Introduction to environmental management standards
- Introduction to environmental labels and declarations
- Ecodesign
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- Life cycle thinking, management and assessment
- Environmental impact assessment (EIA)
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- EU policy framework
- *EU Environment Action Programme
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- *Integrated Product Policy (IPP)
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- *Best Available Techniques (BAT) and BREF
- *EU Emissions Trading System (EU ETS)
- *Green, sustainable and circular public procurement
- EU legal framework
- *SEA and EIA directives
- *EU FLEGT Regulation and EU Timber Regulation
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- *Waste Framework Directive
- *Packaging, packaging waste and landfill
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- *Habitats Directive and Directive of Public Access to Environmental Information
- Multilateral Environmental Agreements
- *The UN Framework Convention on Climate Change and The Paris Agreement
- *The UN Forest Instrument
- *The International Tropical Timber Agreement
- *The UN Convention on Biological Diversity
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- *The UN Convention to Combat Desertification
- *The Aarhus Convention and The Kyiv Protocol
- *The Espoo Convention
- *The Protocol on Strategic Environmental Assessment
- *The Convention on the Transboundary Effects of Industrial Accidents
- *The Bazel Convention – Hazardous wastes and their disposal
- Environmental control and management in Finland
- Circular economy management in Finland
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- *Sustainable development in Finland
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- Environmental law in Finland
- *Environmental Protection Act and Decree
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Authors & references
Edited by:
Professor Olli Dahl, Aalto University
Based on: Hynninen, P., Effluent treatment (Chapter 6). In: Dahl, O. (ed.), Environmental management and control, (Book 19), Papermaking Science and Technology. 2nd edition. Jyväskylä, 2008, Finnish Paper Engineer’s Association/Paperi ja Puu Oy. pp. 85-116.
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This page has been updated 27.08.2022
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