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Endress+Hauser Announces Instrumentation Package for Wastewater Aeration Control

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Endress+Hauser Announces Instrumentation Package for Wastewater Aeration Control
Endress+Hauser Announces Instrumentation Package for Wastewater Aeration Control
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(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)

2350 Endress Place
Greenwood, IN, 46143

Press release date: September 28, 2011

The offering includes ammonium, nitrate, dissolved oxygen, pH, suspended solids, thermal mass flow, pressure and level sensors and transmitters with analog and digital output capabilities.

Visit Endress+Hauser at WEFTEC, Booth #5531

September 28, 2011-Endress+Hauser announces the Instrumentation for Aeration Control package geared specifically toward advanced aeration control strategies. Instruments available measure dissolved oxygen, nitrate, ammonium, pH, suspended solids, temperature, air flow rates, air pressures and water levels in aeration basins to provide enhanced and reliable control of a process. Direct measurement of these parameters can drastically reduce energy costs associated with operating aeration basins.

The combination of sensors and transmitters ensures that the proper amount of air is blown through the system at the correct basin level, and that the process is removing nutrients from the water efficiently and reliably.

The Endress+Hauser family of aeration control sensors easily connects to any plant's PLC or SCADA system via 4-20mA with HART, Profibus or other digital interfaces. This allows any wastewater treatment plant to add aeration basin control measurements quickly and easily. Digital communications and advanced diagnostics in Endress+Hauser instruments simplify maintenance and commissioning and provide state-of-the-art condition monitoring.

Primary savings come from controlling air flow. Aeration blowers can account for up to 70% of the energy usage of a wastewater treatment plant. In a typical process, microorganisms consume organic carbon as a nutrient-creating carbon dioxide, water and biomass-while dissolved oxygen is used to convert ammonium to nitrate which is later broken down into its components. Oxygen is forced into the aeration basin with large blowers (see Figure). Using blowers at full capacity when ammonia levels are low can be expensive and unnecessary.

Endress+Hauser offers a simple and cost-effective solution for measuring ammonium and nitrates present in the aeration basin: Liquiline CM442 transmitters and CAS40D sensors, both with the digital Memosens protocol, monitor the ammonium and nitrates of the incoming and/or treated water with a single sensor array that can provide additional parameters such as pH, temperature, chloride and potassium.

Endress+Hauser Oxymax optical or amperometric dissolved oxygen sensors with the digital Memosens protocol monitor dissolved oxygen to make sure minimum levels are maintained. With the CM442's dual channel digital technology, one transmitter can measure ammonium, nitrates, dissolved oxygen, temperature and pH.

To ensure that the air delivery system is functioning properly, a T-Mass 65I thermal mass insertion flowmeter can be placed in the blower air line.

Because blowers must overcome the hydrostatic pressure of the basin to force air into the process, an Endress+Hauser Cerabar S pressure transmitter is available to measure air line pressure. A Prosonic FMU90 ultrasonic or a Waterpilot FMX21 hydrostatic instrument can be used to measure and control level.

Using aeration basins is an excellent way to remove nutrients, but the energy costs can be high. The Endress+Hauser Aeration Control measurement package helps provide better efficiency of the process, helps a plant meet permit levels efficiently and reliably, and saves energy.

"We offer a complete instrumentation package for easy integration into virtually any aeration basin control system thanks to our advanced analytical, flow, pressure, level and temperature instrumentation with digital communication protocols," says Nick Camin, product manager in the Endress+Hauser Environmental Group. "From on-line ammonium and nitrate measurement to blower air flowrates, Endress+Hauser is the single-source supplier for aeration control measurements."

Contact: Kathleen Spindler
Marketing Manager
Endress+Hauser, Inc.
Phone: 317-535-1329
Fax: 317-535-2171

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