Wastewater BOD Monitoring
Biochemical oxygen demand (BOD) is one of the most important measurements in wastewater treatment. Regulatory requirements normally determine the permissible threshold for treated waters discharged back into the environment using a lengthy test such as BOD5 to control. Recent advances in online measurement systems now make it possible to measure BOD, COD and other parameters in real-time and with improved accuracy.
Typical Wastewater BOD Monitoring System
Recent advances in sensing technology now make it possible to accurately sample wastewater for BOD at any stage of the treatment process - a dramatic improvement over traditional methods such as BOD5. By combining the Proteus multiparameter water quality sonde with NexSens telemetry systems, accurate BOD measurements can be delivered in near real-time.
The Proteus was developed in the UK via collaboration between RS Hydro and the University of Birmingham. In addition to BOD, it supports calibrations for other parameters relevant to water and wastewater treatment including chemical oxygen demand (COD), dissolved organic carbon (DOC), and total organic carbon (TOC). The probes also accommodate other sensors for basic and advanced measurements like pH, DO, turbidity, CDOM and tryptophan, all in a single instrument package.
Combining the Proteus with the NexSens X2 environmental data logger allows for online data collection from nearly any location. The X2 runs from a mains power supply or SP-Series solar power pack. Data is transmitted wirelessly to the WQData LIVE web datacenter, which includes a rich feature set for viewing, manipulating, reporting and exporting of data. Configuration of alarm notifications is also possible to inform personnel when critical thresholds are surpassed.
Besides the Proteus, systems can easily be expanded with a wide range of industry-standard sensor types such as water level sensors and velocity/flow meters. The multiple sensor ports on the X2 data logger facilitate multi-sensor deployments from the same unit. Buoy-based measurements are also possible, for example, to measure DO at locations where effluent is discharged back into surface waters.
Contact a NexSens Applications Engineer today to discuss your wastewater BOD monitoring application.
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