Water treatment

DANETV offers the verification of technologies and products for the treatment of wastewater, drinking water, contaminated groundwater and water for special purposes. DHI performs the verification of technologies and products for water treatment.

Contact
Mette Tjener Andersson
+45 4516 9148
mta@dhigroup.com

Ongoing verifications:

Flow regulator
Mosbaek is producing flow regulators to be installed in the sewage systems. By using flow regulators flooding can be alleviated in the piping system. Extreme rains often lasts only a short and a good solution is to alleviate the excess water in appropriate parts of the sewage system. Mosbaek is currently having their centrifugal flow regulator CEV verified.

Completed verifications:

Reduction of arsenic in drinking water
By means of an iron generator developed by MicroDrop ApS drinking water with elevated concentrations of arsenic can be treated. The system includes an iron generator, an aerator, sand filters and a tank for collection and removal of sludge. In the iron generator iron is added to the water as Fe (II). The water is pumped through the aerator, where iron(II) is oxidized to iron(III). Iron forms poorly soluble hydroxides which adsorb arsenic. In the sand filter poorly soluble hydroxides and adsorbed arsenic compounds are removed. The plant was planned tested for reducing arsenic in drinking water. Verification Protocol and Test Plan.

Treatment of water for reuse
The verification concerns filtration technology equipped with a silicon carbide membrane. The technology was tested for treatment of re-circulated water in swimming pools and the technology works as an alternative to sand filter. The technology was verified for CoMeTas A/S. Verification Statement, Verification Report and Test Report.

Drinking water from surface water
Coagulation with direct filtration technology for the production of drinking water from surface water sources was verified for Ingenjörsfirma Ros AB, Sweden. The verification covers the removal of natural organic matter, particles and microorganisms. Verification Statement, Verification report and Test report.