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FreeFlow GREEN - the green antiscalant

Modern antiscalants are subject to the DIN EN 15039 standard for polycarboxylic acids and the DIN EN 15040 standard for phosphonic acids when it comes to their use in the treatment of drinking water by membrane systems.

In addition to the requirements for drinking water production, another requirement profile for the antiscalant can be its biodegradability.


Antiscalants - history and mode of action

The first commercial membranes were made of cellulose acetate. An acidic pH in the feed prevented the membranes from degrading. The acidic pH also prevented calcium carbonate deposits in the concentrate.


Expertise reports from Dr. Nähring Water Treatment GmbH

An expertise is a report written by experts on a specific issue in a particular field. As experts in the field of antiscalants and purifiers for membrane plants, we provide expert reports in the following areas:


FreeFlow System Antiscalants from Dr. Nähring Water Treatment GmbH

During the filtration process of a reverse osmosis system, the raw water is separated into permeate and concentrate. Depending on the yield, the water constituents in the concentrate are concentrated to a greater or lesser extent. In this process, the solubility limit of one or more compounds may be exceeded. In this case, the addition of antiscalant is necessary, which prevents or hinders and delays the formation of residues.