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 Chair: Andrew Matsumoto, Civil West Engineering Services;
8:00am - 8:45am
Odorous Gases Wreaking Havoc on Electrical Equipment in Wastewater Plant Control Rooms
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
Tesco Controls Inc., United States of America;
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