AFW017 Water Treatment Plant 2 Vocational Training Equipment Fluid Mechanics Lab Equipment
Description
Depth filtration with sand filters and ion exchange are key unit operations in water treatment. It enables these two operations to be demonstrated.
The raw water is pumped from above into a sand filter. Solids are captured and retained as the raw water flows through the filter bed. The filtered water emerges from the bottom end of the sand filter and then flows through two ion exchangers (cation and anion exchangers). In the process, unwanted ions are exchanged for hydrogen and hydroxide ions. The raw water is softened and desalinated. The sand filter and the two ion exchangers can be used in combination or separately. The solids deposited in the sand filter result in an increase in pressure loss. Backwashing cleans the filter bed and reduces the pressure loss. The ion exchangers can be regenerated with acid or caustic.
The sand filter is equipped with a differential pressure measurement. There are also several pressure measuring points along the filter bed. The pressures are transmitted to tube manometers via hoses and displayed there as water columns. This can be used to plot Micheau diagrams. The flow rate, temperature, conductivity, differential pressure and system pressure are measured. The flow velocity in the filter bed (filter velocity) can be adjusted. Samples can be taken at all relevant points. E.g. diatomite can be used to produce the raw water.
A software program is provided to control the operating states and measure data. A process scematic shows the current operating states of the individual components and the measured data.
Specification
water treatment with depth filtration and ion exchange
sand filter, cation and anion exchanger
all processes usable separately or in combination
backwash of sand filter
regeneration of ion exchangers
differential pressure measurement of sand filter
20 tube manometers to measure the pressures in the filter bed
plotting of Micheau diagrams
measurement of flow rate, temperature, conductivity, differential pressure and system pressure
filter velocity adjustable
software with control functions and data acquisition via USB under Windows Vista or Windows 7
Technical data
Raw water pump
max. flow rate: 25m3/h
max. head: 20m
Backwash pump
max. flow rate: 3m3/h
max. head: 37m
Tanks for raw water and treated water
capacity: each approx. 180L
Measuring ranges
flow rate (raw water): 0…1300L/h
flow rate (regeneration): 2…25L/h
differential pressure: -1…1bar
system pressure: 0…4bar
tube manometers: 20x 0…1500mm
conductivity: 0…600µS/cm
temperature: 0…100°C
filter velocity: approx. 0…70m/h
230V, 50Hz, 1 phase
Dimensions and weight
LxWxH: 1550x920x2200mm (trainer)
LxWxH: 1400x800x1150mm (supply unit)
LxWxH: 750x640x1840mm (manometer panel)
Total weight: approx. 440kg
Required for operation
Caustic soda, hydrochloric acid, distilled water