0187_Eigenwasserv_en_2012-03-21.qxd:Layout 1 21.03.2012 13:58 Uhr Seite 1 Water treatment for private water supply GENO®-UV-60 S GENO®-Ultrafil 450 GENO-mat® FE-Z favourably fective and Ef tions with priced solu s ic standard ble hygien relia www.gruenbeck.com

0187_Eigenwasserv_en_2012-03-21.qxd:Layout 1 2 21.03.2012 13:59 Uhr Seite 2 Microbiology and disinfection Water treatment for private water supply Nowadays, water treatment is continuously gaining in importance. In large water supply companies, for instance, costly measuring and control technology is installed for this purpose. In the comparatively small systems used for private water supply, however, other processes must be applied in order to render the water treatment cost-effective. The water originating from private supply systems requires treatment if one or several substances contained...

0187_Eigenwasserv_en_2012-03-21.qxd:Layout 1 21.03.2012 13:59 Uhr Seite 3 Deacidification / Deferrisation/demanganisation Deacidification is important – acidic water destroys metal pipes Depending on the soil the water has been flowing through, ground or well water may have a very low pH value (even lower than the limit value for drinking water of 6.5) and therefore might react acidic. Such low pH values result from an excess of carbon dioxide. In terms of hygiene or health, there are no objections to purely use acidic water as drinking water. For technical applications, however, this kind of...

0187_Eigenwasserv_en_2012-03-21.qxd:Layout 1 13:59 Uhr Seite 4 Nitrate reduction / Reduction of the total salt concentration Nitrate reduction – intensive farming takes its toll In nature, nitrates rarely occur in high concentrations in the ground water. In areas of intensive agricultural manuring, however, nitrate values of > 50 mg/l can be found. In this process, nitrate is replaced by chloride (similar to the softening process where calcium and magnesium are replaced by sodium). When the ion exchange material is exhausted, it will be regenerated fully automatically. In general, ion exchangers...