Continuous monitoring of ammonia in wastewater streams is becoming increasingly important for plant operations and process control. Analytical Technology’s Q45N, dissolved ammonia monitor enables companies to effectively control the levels of ammonia in wastewater effluent.
This type of application must be strictly controlled as excessive levels of the substance can be toxic to animal and plant life. The Environment agency set out effective and reliable monitoring regulations for companies to comply with.
Traditional Ammonia instruments are expensive, complex and labour-intensive, which use automated versions of ammonia selective ion electrodes methods better suited to laboratory measurements. The on-line Q45N monitor overcomes these problems by using reaction chemistry to convert ammonia in a solution to a stable monochloramine compound, equivalent in concentration to the original ammonia level. The chloramine concentration is then measured with a unique amperometric sensor that responds linearly to chloramines while eliminating interface from excess free chlorine in solution.
Reagents are inexpensive and usage is low, offering very low cost of ownership. The monitor has two 4-20mA outputs programmable for free ammonia, total ammonia and monochloramine concentration. This allows all the important parameters to be measured on a single instrument. The amperometric sensor also provides excellent repeatability over long periods of time.
