Aeration helped to cut groundwater CO2 levels almost in half

Customer Haminan Vesi is using groundwater for potable water production. They had a problem with high CO2 content in groundwater which resulted in poor performance of limestone alkalization prior to reverse osmosis. Aeration can strip gases like CO2 out of water and it could be a cost-effective solution. The customer wanted to test how aeration affects the process.

Roxia Floating Aerator minimised the risk of air getting entrained in the pumps

The groundwater is stored in a holding tank roughly 4 m x 5 m in size and 3 m in depth, located indoors inside a pumping station.

The inlets to the pumps are located on the bottom of the holding tank and the customer was concerned about air bubbles being carried to the pumps. A floating aerator was chosen over diffusers because there was no risk of air getting entrained in the pumps.

Aeration was successfully helping the process, facilitating subsequent limestone treatment

One Roxia Floating Aerator 1,5 kW with variable frequency drive was installed in the basin.

As soon as the aerator was commissioned a major effect could be seen and aeration now almost halves the CO2 level in the water, with subsequent limestone treatment now working perfectly. Roxia Floating Aerator was an easy, inexpensive, and efficient way to solve the customer’s challenge!

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Danie Groenewald

Area Sales Manager South Africa

+27 10 590 8374

Kauko Tanninen

President, Russia & CIS

+7985 226 14 91

Russell Beaumont

Senior Service Manager, Filters Australia

+61 408159305

Ettienne Joubert

Sales Engineer South Africa

+27 (0) 81 030 1015

Sun Lin

Area Sales Manager, General Manager China

+86 21 52679628

Lyle Henson

Environmental Technologies Sales Manager North America

+1 443 695 9510

Dan Stenglein

Sales Director North America

+1 667 500-2591

Ronald Gaspar

Technical Service Manager Peru, Colombia

+51 9 7973 5424

Robert Parks

Filter Sales Manager North America

+1 410 636 2250

Maureen Brown Briceño

Sales Manager South America

+56 9 7740 0878

Yury Beloborodko

Director, Filtration MMM & CEEC Russia & CIS

+7 921 959 46 20

Sergey Petukhov

Technical Director Russia & CIS

+7 495 726 57 41

Don Kitchen

Filter Spares Sales & Service Manager North America

+1-410-636 2250

Jesse Saira

Area Sales Manager Nordic and Baltic Countries

+358 44 276 2338

Dirk Otto

Sales Director Central Europe

+49 (0) 2102 420 707

Victor Ortega

Area Sales Manager Asia Pacific

+61 499 156 590

Juho Uusitalo

Area Sales Manager Eastern Europe

+358 40 680 4396

Kimmo Angeria

Head of Field Services, Roxia Automation

+358 400 104 977

Eduardo Paredes

Sales Director South America

+56 994 991 561

Markus Saloniemi

CEO, Roxia Automation

+358 40 571 9520

Fernando Henriquez

Sales Director Peru


Petri Kiljunen

Petri Kiljunen, Regional Director, Middle-East and Mediterranean