LAR Process Analysers’ BioMonitor is an online biochemical oxygen demand analyzer for the determination of the total biochemical oxygen demand that enables the optimal control of a wastewater treatement plant, the company says.
The analyzer determines the degradation of nitrogen as well as carbon compounds within minutes. The company says this characterizes a huge advantage against the regulated BOD5 measurement (carbonaceous-BOD), which needs five days. Using BioMonitor allows plant operators the right control of a plant, providing cost savings regarding blowers and/or nutrient dosage.
The analyzers’ functional principle is similar to a biological treatment plant. The wastewater to be tested is mixed with activated sludge and air and continuously passed through a mutli-stage measurement cascade. Upon exiting the cascade, the residual oxygen is measured with an oxygen sensor.