The Greenspan Wastewater Monitor provides waste treatment plant operators and water quality managers with a compact on-line system capable of performing a wide range of chemical and physical analyses with a level of performance equivalent to certified laboratory analyses.

State-of-the-art patented technology for continuous testing of effluent quality does away with traditional grab sample testing with its 2 to 5 day delay and delivers calibrated results in less than 10 minutes. Validation of results by on-board reference standards delivers unmatched levels of confidence in the results.

Primary measurement is by flow injection analysis in which a known quantity of sample is mixed with known quantities of chemicals. Digestion breaks down nitrogen and phosphorus compounds into simpler molecules whose concentrations can be measured colorimetrically.

For other parameters ion selective electrodes immersed in the solution convert concentrations directly into electrical signals.

Sample results can be obtained within 10 minutes and can be repeated at 10 minute intervals (or 30 minute intervals allowing for standardisation). The sampling frequency can be set locally or remotely by the operator.

Most recent results are always available on the Monitor's built-in LCD display and as a 4-20mA signal for connection to the waste treatment plant's process control system.

Results can also be stored and transferred to a central data processing system (for example in the plant control room).

Custom interface software allows service level access to operating parameters of the monitor and will perform automatic restart after power failure.

In addition the Monitor can alert a central computer when reagents need to be replenished, when data is outside set ranges, or when the internal logger memory is full or system malfunctions are detected.

The unit requires only minimal maintenance, with a monthly visit to change tubing and replenish reagents.
 
 

Key Features and Benefits
 

	Better understanding of treatment plant operations.
	Real time results allow quick action should effluent quality vary outside prescribed or regulatory limits.
	Process control applications can provide consistent plant operation and yield cost savings in chemicals added to reduce phosphorus levels.
	Standard solutions are introduced and measured at specific intervals to ensure continuing accuracy of measured results.
	System versatility is enhanced by software which enables users to preset and vary monitoring intervals, trigger levels and alarm functions.
	Users automatically obtain data on effluent quality during significant events, even when the waste treatment plant is unattended.
	Reduce need for samples to be sent for laboratory analysis.