Our glossary explains technical terms from the area water research. We hope it facilitates the understanding of this publication. If you have comments or suggestions, please use our
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Habitat
Living environment for organisms or space inhabited by a species.
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Heterocylics
Organic compounds with a ring-shaped structure in which one or more carbon atoms are substituted with a heteroatom (e.g. nitrogen, oxygen).
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High-rate digestion
This procedure was developed by the Fraunhofer Institute for Interfacial Engineering and Biotechnology (IGB). The procedure is characterised by its enhanced efficiency through the use of a smaller -> digester, shorter retention times of the sewage sludge in the digester and a higher biogas yield. With high-rate digestion, the amount of residual sludge requiring disposal is also reduced.
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Hydraulic effect
Effect of a specific measure on the properties of a river, e.g. on outflow distribution, flow speed or water levels.
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Hydraulic resistance
Resistance offered by a medium against the free flow of water. This property depends on the thickness and hydraulic conductivity of a material or ground layer.
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Hydraulic soil and groundwater remediation
Remediation process based on the mechanical properties
of fluids.
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Hydraulics
Study of the mechanics of fluids.
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Hydrodynamics
A branch of fluid mechanics dealing with the dynamic, storage and transport processes in hydraulic systems.
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Hydrology
The scientific study of water, its spatial and temporal distribution and the associated biological, chemical and physical properties.
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Hygroscopic particles
Substances that bind moisture from the atmosphere.