Soil
Usually all three phases (solid, liquid and gaseous) are encountered in the soil. Similarly, all three phases can be affected by contamination. Soil treatment requires a holistic approach which takes all three phases in the soil and their complex interactions into account.
In the field of hydrogeology, we offer selected training equipment which will help you to teach the basic hydrogeological processes in soils in a practical and clear manner. Issues such as seepage of precipitation, seepage flows and groundwater flows are studied.
Investigation of precipitation-discharge relationships, storage capacity of soils, seepage flows and groundwater flows
Learning objectives/experiments
- investigating transient processes
- effect of rainfall of varying duration on the discharge
- storage capacity of a soil
- investigating steady processes
- investigating seepage flow
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- investigating seepage flow
Correlations between precipitation and seepage; various drainage methods
Learning objectives/experiments
- effect of precipitation of varying duration or intensity on soils with different saturation
- record hydrographs after precipitation
- compare natural drainage with drainage via drainage pipe
- influence of rainwater retention basin on the hydrograph
Three-dimensional investigations; demonstration of lowering of groundwater; investigation of excavation pits
Learning objectives/experiments
- determining the groundwater level
- lowering of groundwater level via two wells
- groundwater flow on excavation pits
- groundwater studies under concentric load on the substrate
Graphical determination of flow nets; investigation of water pressure on structures
Learning objectives/experiments
- determining flow nets in permeable media graphically
- streamlines under a sheet pile
- streamlines through an earth dam
- drainage at an open ditch
- determining the pressure curve at a foundation
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Investigation of the properties of fixed and fluidised beds subjected to liquid flow
Learning objectives/experiments
- learning the fundamentals of flow through fixed beds and fluidised beds (Darcy)
- determination of the permeability coefficient
- observation of the fluidisation process
- pressure loss dependent on the flow rate, type, particle size and height of the bulk solid
- determination of the fluidisation velocity and comparison with theoretically calculated values
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The main objective of soil treatment is to protect the groundwater and – as far as possible – to restore the original function of the contaminated soil. A number of different methods are available depending on the type of soil and type of contamination.
Separation of solids from liquids by using a centrifugal force
Learning objectives/experiments
- fundamental principle and the method of operation of a hydrocyclone
- solid mass flow rate in feed, overflow and underflow
- liquid mass flow rate in feed, overflow and underflow
- characteristic values for sharpness of separation
- pressure loss at the cyclone dependent on the feed flow rate
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Continuous and discontinuous extraction of the soluble components of a solid
Learning objectives/experiments
- fundamentals of solid-liquid extraction
- demonstration of solid-liquid extraction as a continuous and discontinuous process
- investigation of 1-, 2- and 3-stage processes
- influence of solvent flow rate and temperature on the extraction process
- influence of extraction material feed rate and extractor revolving speed on the extraction process
Device-specific software required for the connection of CE 630 with the Web Access Box GU 100
Learning objectives/experiments
- together with the experimental unit: Remote learning
- software interface with
- process schematic
- switching states
- current measured values
- transfer of measured values for further evaluation
- streaming of live images
- graphical visualization of the experimental results
- software interface with