Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

 
Session Overview
Session
Session 26A: Wastewater 101: Electrical/I&C
Time:
Wednesday, 11/Sep/2019:
8:00am - 10:15am

Session Chair: Andrew Matsumoto, Civil West Engineering Services;
Location: D136

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Presentations
8:00am - 8:45am

Odorous Gases Wreaking Havoc on Electrical Equipment in Wastewater Plant Control Rooms

Anthony Yamini

PureAir Filtration, United States of America;

In the world of wastewater treatment there is a major focus on odor control, and rightfully so. Odor controls systems have become standard features in new wastewater treatment projects. Urban encroachment has led to residential and commercial development on the doorsteps of treatment plants and lift stations. Where once wastewater odors were just a fact of life, neighbors no longer accept this status quo. There are a multitude of technologies to monitor and control Hydrogen Sulfide and other sewage gases, but not much discussion on the effects of these odorous gases on electronic equipment and the treatment plants. Very high levels of corrosive gases and vapors from processes attack electronic controls which control the plant costing billions of dollars in equipment damage, outages and casing potential harm to personnel. Some of the areas affected are control rooms, administrative buildings, instrumentation storage, and any place that has sensitive electrical equipment.

Various customers and engineering firms in the industrial market follow the Instrument Society of America ISA-71.04 standard for the control of airborne contaminants, which has been in place for 30+ years. Within the municipal markets there are only a handful of engineering firms such as HDR, Hazen & Sawyer, and AECOM that have incorporated corrosion control technology within their master specifications and actively design and specify these systems for corrosion control in wastewater treatment plant control rooms.

This paper will discuss the effects of corrosion as well as the economic cost impacts at the wastewater facilities. Additional discussion will be made regarding effective methods and equipment for protecting the electronic equipment.



8:45am - 9:30am

Power Regeneration During ASR Injection

Matthew Johnson. P.E., Kent Madison

3R Valve, United States of America; ,

Power generation during ASR (Aquifer Storage and Recovery) has been meet with heavy speciesism. With a few municipalities and private owners willing to try the new and developing technology, the analyzed results indicate and prove power regeneration during ASR injection is viable with a short return on investment. ASR power regeneration can be achieved with a minor addition to a typical ASR well project. In order to generate power from the motor, the pumping motor is allowed to run in reverse during ASR injection. With the use of a regeneration VFD (Variable Frequency Drive), AC power is generated and reduces the overall consumption of power by the end user. One specific well, for example, was analyzed over a five-year period. The total amount of non-native ASR water stored after that five-year period was 103.37 billion gallons. During that same period of injection, with the use of power regeneration, the consumer offset and reduced the total power consumption by 269.27 megawatts. The potential amount of power generated from ASR regeneration has the ability to offset the cost of pumping by tens of thousands of dollars. Power utility credits and the amount of money saved over the lifetime of a well pumping application, gives the end user comfort and flexibility to utilize surplus capital for other necessary projects.



9:30am - 10:15am

Virtualization For Wastewater Control Systems

Keith Webb

Tesco Controls Inc., United States of America;

  1. What is Virtualization
  • Traditionally SCADA operating system and software applications were tightly tied to the computer hardware that they were installed on
  • Virtualization breaks the link between the software and the hardware (not cloud based system, on premises host computers)
  • Ability to change the computer hardware without upgrading software components
  • Multiple instances of an operating system with independent applications can now run on the same hardware

2. Problems that Virtualization solves

  • IT has short hardware upgrade life cycles, Wastewater Control System software have long life cycles
  • Extends the life of legacy systems by allowing those needed hardware upgrades
  • Provides the ability to manage multiple incompatible software versions
  • Requires less power, space, cooling, and hardware management
  • Allows for server consolidation and centralized server management and deployment
  • Improves reliability by allowing you to treat your operating system like data and possesses advanced data recovery functionality
  • Built in redundancy features allow for "bumpless" hot-standby functionality with SCADA systems (Supervisory Control & Data Acquisition)

3. Main software choices for Virtualization of Wastewater Control Systems

  • VMware VSphere: Supported by most all SCADA software vendors
  • Microsoft HyperV: Beginning to be supported by a lot of SCADA software vendors
  • Other Options: Citrix Xen, Fusion, Parallels, and other desktop solutions

4. How to Virtualize a Wastewater Control System

  • Best practices for hardware selection and data backup
  • The trouble with legacy serial telemetry connections
  • Potential problems with legacy specialty hardware communication devices
  • Tools for managing your Virtualized environment
  • Importance of proper network design when running Virtualization


 
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