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MECKOW EPA20

a simple solution
to a complex problem

MECKOW EPA20 Technical Information

MECKOW EPA20 Water Treatment Plant

The MECKOW EPA20 is a compact transportable treatment plant which can produce up to 20 m3/h of potable water, from most sources of fresh raw water. It is also able to remove certain contaminants like iron, manganese and sulfur that may be present in groundwater sources. The maximum treatment capacity may vary depending on source water quality.

The plant is made of epoxi coated carbon steel and weights approximately 6.000 kg. The unassembled MECKOW EPA20 and all of its components fit inside a 40-foot container for ease of shipment.

The treatment process consists of conventional coagulation, flocculation, sedimentation, filtration and disinfection.

Coagulation (Rapid mixing)

Rapid mixing takes place in the raw water inlet pipe, where the chemicals are fed directly into the pipe via a dosing system, 1 m upstream from the plant inlet.

Hydraulic flocculation

The MECKOW EPA20 has a two stage hydraulic flocculation process. Here the water is gently mixed as it flows past vertical baffles placed in the flocculation channels.

Sedimentation

The MECKOW EPA20 has one high rate settling tank, with settling tubes inclined 60º towards the horizontal plane.

The inlet system consists of a longitudinal pipe with orifices in both sides, while the outlet system consists of three longitudinal pipes with orifices in the upper side.

The sludge settles at the bottom of the lamella unit, from where it can be removed at prolonged intervals.

Rapid filtration

The plant has four declining rate rapid filters, with an automatic backwash system.

Each filter has a uniform media bed, consisting of fine sand, and an underdrain system with nozzles.

Backwashing is carried out by inverting the direction of flow and using the water from the other 3 units. Therefore it is not necessary to have a pumping system for the backwash process.

Dosing system

Chemicals used in the treatment process are metallic coagulants (like aluminum sulphate, ferric chloride, etc), alkalinity regulators and disinfectants.

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