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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
Gerald Heinicke
+45 4516 9268
ghe@dhigroup.com

 

Ongoing verifications:

UV-disinfection of effluent from fish farms (aquaculture)
Land-based fish farms are often required to disinfect the intake water to the farm as well as their effluent. Disinfection by UV light is among the most suitable and economic technologies for this purpose. The UV disinfection system MR4-320 SS ACN by Ultraaqua A/S will be tested at a fish farm and verified in accordance with regulations formulated by the Norwegian Veterinary Institute.

Cleaning of oil-contaminated wastewater in root zone system
Onshore oil extraction in remote areas are in the need of low technology cleaning methods for treatment of the oil-contaminated water retrieved together with the oil from the formation. The treatment can take place in a root zone system. Transform af 1994 is therefore at the moment having the oil-removal effect of there root zone system verified.

 

Completed verifications:

Verification of small wastewater treatment plants for holiday cottages
BioKube sells small treatment plants to treat wastewater at individual properties in the open countryside. BioKube has developed a technology which ensures that the plant also work after a period without inlet water from the house. One claim is that the treatment plant is able to treat incoming water from the house immediately after a period without incoming water. BioKube has also developed an energy saving electronic control system for the management of the treatment plant; this makes it possible close down the unit part time. The savings in power consumption is at least 50%, when the plant is not in use. The verification documents are published on EU ETV's website.

Treatment of water in dental chairs to prevent biofilm
By use of electrolysis chlorine generation BacTerminator® Dental from Adept Water Technologies disinfects water entering the dental unit water line and prevents formation of biofilm. This ensures that patients and dental staff are not exposed to bacteria and especially Legionella. The verification was performed as a joint verification between the EU ETV programme and the Chinese ETV programme.
Verification Report and Verification Statement

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. Verification Report and Verification Statement.

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.