Before scenario:

The red horizontal lines at the bottom of the graph indicate when the detergent outlet valve opened (upper red line) and when the detergent recovery valve was actuated open (lower red line).

Detergent (green trend line) returned back to the CIP system 76 seconds prior to the CIP system opening the detergent recovery valve. At a flow rate of 180 litres/minute this caused 228 litres of hot solution to be 'wasted' to drain.

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After scenario:

The detergent recovery valve is being 'opened' as soon as caustic is detected by the CIP return line interface probe.

Preventing hot caustic solution being erroneously routed to drain saves water, energy and chemical costs. It also reduces the high pH impact such solutions have on the site's effluent system.

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