METHODS AND DEVICES FOR MEASURING THE CONCENTRATION OF AN ADDITIVE

An apparatus and methods for measuring the concentration of an additive are disclosed. The apparatus comprises a treatment stream (1) and a dosing stream (2). An additive is added to the dosing stream using a metering device (3). In some embodiments, the dosing stream is mixed after adding the addit...

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Bibliographische Detailangaben
Hauptverfasser:	DALY, LUKE, J, ALIG, CRAIG, S
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS TESTING THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	An apparatus and methods for measuring the concentration of an additive are disclosed. The apparatus comprises a treatment stream (1) and a dosing stream (2). An additive is added to the dosing stream using a metering device (3). In some embodiments, the dosing stream is mixed after adding the additive using a first mixing device (4). Downstream from the metering device and the mixing device, the concentration of the additive in the dosing stream is measured using a monitor flow cell (5). In some embodiments, the dosing stream and treatment stream are combined (6) and mixed using a second mixing device (7). The concentration of the additive in the treatment stream can be calculated as a function of the volumetric flow rate ratio of the dosing stream to the treatment stream and the measured concentration of the additive in the dosing stream.