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Rapid online analysis of phosphorus content

| By Chemical Engineering


Endress+ Hauser

The Liquiline CA80TP phosphorus analyzer (photo) is designed for monitoring industrial wastewater and inlet and outlet streams of municipal wastewater treatment plants. The CA80TP uses a thermal digestion technique along with colorimetric analysis, requiring only a small quantity of reagents. With online measurement, there is no waiting for time-consuming laboratory analysis. The CA80TP measures phosphorus in ranges of 0.05 to 10 mg/L or 0.5 to 50 mg/L. It has two 4–20-mA outputs with the option for additional outputs. Samples are drawn from the process using a suction strainer or can be taken from a bypass piping system. A precise sample volume is digested at high temperature with a digestion reagent. An optical dosing unit — to dose sample and reagents — uses a redundant light barrier for a high level of reliability, guaranteeing precise and reproducible results from extremely small volumes of reagent. The CA80TP has a software-controlled safety cover to prevent access to the digestion reactor when it is under operation. — Endress + Hauser Inc., Greenwood, Ind.