AIR & WATER

MONITORING NEWSLETTER  

March 2013
No. 401

Automation and Instrumentation at the North East Ohio Regional Sewer District

This Cleveland area district operates three large sewage treatment plants. They are completing a large fluid bed incinerator to replace an older design. This new incinerator will incorporate zirconia O₂ analyzers from Yokogawa.

Infilco Degremont is the system supplier. They have contracted with, Apex Automation and Controls to perform programming and start-up of three Sludge Incineration Trains. Aside from the additional train, the system design is similar to that of Duffin Creek’s incineration process. Incorporated within is a Waste Heat Boiler Energy Recovery system to generate electricity.

The control system consists of seven Allen Bradley PLCs responsible for communicating with over 1400 Ethernet I/O and DeviceNet points. The HMI uses InTouch’s Archestra Wonderware Platform deployed to a redundant network server managing six Thinmanager clients. This platform will seamlessly tie all recorded historical data to the existing region’s network.

One of the major strategic initiatives cited in the 2012-16 budget plan is to evaluate further automaton of sewage treatment and collection facilities. Some specific instrumentation which will be purchased is shown below.

The significant expenditure for trace pharmaceuticals is indicative of the importance of this health problem.

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