defr Glossar

The measurement of the concentration of nitrate is of interest at two places in the water circuit: at the drinking water treatment and at the waste water treatment. Waste water treatment plant.

In the first case, the legally prescribed maximum value is presently 50 mg NO3 /l in Germany and 40 mg/l in Switzerland. The continuous measurement is primarily used when the nitrate content is reduced to a certain amount by means of biological or physical-chemical processes. The blending with nitrate-free water also requires a permanent control.

In waste water treatment, nitrate measurement monitors the second stage of the biological elimination of nitrogen, in which the nitrates (resulting during the first stage by the oxidation of ammonia) are reduced to form gaseous nitrogen.

Among the known analytical methods (ion-sensitive electrodes, amperometry, colorimetry), the direct photometrical determination is the only one not requiring reagents. It is therefore best suited for industrial application as a result of its low maintenance requirements.

Index

Contact distribution partner

{{selectedCountry.Name}} {{country.Name}}

Please select your businessarea

{{ba.Name}}

Please select

{{area.Name}}

Please select your businessarea

{{ba.Name}}
{{selectedCountry.Name}} {{country.Name}}
{{vm.getBusinessAreaStringByVendor(vendor)}} {{area.Name}}
{{vm.getBusinessAreaStringByVendor(vendor)}}
René Gehri
Water, Beverages & Food, Industrial Processes
Florian Bodmer

Contact headquarters

Felix Joller
Sales Manager ScrubberGuard
Öffnungszeiten:
Montag–Freitag 08:00–12:00 und 13:30–17:00
Feiertage & Betriebsferien:
Ostern: 07.–10. April 2023, Auffahrt: 18. Mai 2023, Pfingstmontag: 29. Mai 2023, Fronleichnam: 08. Juni 2023, Bundesfeiertag: 01. August 2023, Maria Himmelfahrt: 15. August 2023, Allerheiligen: 01. November 2023, Maria Empfängnis: 08. Dezember 2023, Betriebsferien: 23. Dezember 2023 – 02. Januar 2024
Opening hours:
Monday–Friday 08:00am–12:00pm und 1:30pm–5:00pm
Public & company holidays:
Easter: 07.–10. April 2023, Ascension Day: 18. May 2023, Whit Monday: 29. May 2023, Corpus Christi: 08. June 2023, Federal Holiday: 01. August 2023, Assumption Day: 15. August 2023, All Saints Day: 01. November 2023, Conception of Mary: 08. December 2023, Company holidays: 23. December 2023 – 02. January 2024