Lenntech Water treatment & purification Lenntech Water treatment & purification

Remineralisation Filters Limestone contactors

Limestone contactors are used to neutralise the pH and to add calcium and bicarbonates to acidic waters such as groundwater, rain water or Reverse Osmosis permeate.

If water does not contain any agressive CO2, CO2 gas must be injected prior to filter inlet. Please send us your water analysis for a complete design.

Filtration velocity 8-30 m3/h.m2
Diameter 50 cm to 1m 1 to 3m
Filtration area 0,2 to 0,8 m2 0,8 to 7 m2
Flowrates 10L/h to 25 m3/h 6 to 200 m3/h
Pressure ratings 4 to10 bar
Vessel Materials Epoxy-coated steel
Polyester composite
Stainless steel (on request)
Bed depth 1 meter min.
Filtration media Calcite (CaCO3 99%)
Top manhole 2 1/2 to 6" DN 400
Accessories 5-ball or butterfly valves 5-butterfly valves
Options Manometers, degaser, flowmeter
Control Automatic or manual backwash, on timer and.or differential pressure

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