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Iron depositing, Zwolle, Holland

The project:

Deposition of iron using a submersible aerator in Zwolle, Holland

Executing company:

Distrimex Pompen&Service BV

The problem:

The groundwater is highly impure with dissolved iron. Clarification using oxidation and filtration of iron oxide using a water softener system. Then filtration through a sand filter and finally an activated carbon element.

Our solution:

Oxidation carried out by installing a Tsurumi model 32TRN21.5 submersible aerator. The use of a submersible aerator already causes the greater part of the iron to oxidize and precipitate, so that it remains in the sand filter. The rest of the system is less contaminated, requiring fewer replacement of the expensive carbon filter. The result is that maintenance and operating costs are minimized.


In the event of abrasive and corrosive utilization, stronger wear and tear will take place naturally in certain components. With regards to the above application wear and tear can take place mainly in impeller, agitator, suction plate, shaft sleeve, oil ring, mechanical seal, pump casing, strainer, motor casing and discharge coupling. Depending on the working conditions the lifetime of those parts might vary significantly and can be shorter than the legal warranty period.
In this regard, please pay attention to our general terms and conditions that we also send to you by mail on request.