Opportunities for Open Automated Demand Response in Wastewater Treatment Facilities in California - Phase II Report. San Luis Rey Wastewater Treatment Plant Case Study

Characterization of demand response in the commercial, industrial, and residential sectors in the United States

“…Loads in this sector are projected to increase 20% over the next 15 years owing to population increases and more stringent regulations . Field demonstrations show that load shifting and shedding are both potential ways for this sector to participate in DR, especially by shutting down a portion of the aeration trains and by shifting operation of centrifuges, the gravity belt thickener, lift pumps, and external pump stations . An example showing load reductions from lift pumps and centrifuges is shown in Figure .…”

Opportunities and Challenges for Water and Wastewater Industries to Provide Exchangeable Services

“…Some of these services can be provided through manual control, but those that require faster response typically need automated control, either with a signal provided by the electric utility, or by sensors that detect-and react to-frequency or voltage excursions beyond certain prescribed values. Open Automatic Demand Response (OpenADR) is an open Internet-protocol-based communication specification for sending demand response signals and currently appears to be the most common method used today for providing automatic control, especially in the case studies conducted in California (Thompson et al 2010). Some companies, either control companies such as Honeywell or third-party aggregators such as Enbala, refer to their own branded communication systems.…”

“…The flow of wastewater into a WWTP generally has a daily profile that is similar to the potable water use profile, but it is delayed slightly. Peaks in influent flow in the morning and evening occur after the demand peaks at a WTP (Thompson et al 2010). As with WTPs, smaller plants have higher energy intensity per volume of influent treated than larger plants.…”

2008-2010 Research Summary: Analysis of Demand Response Opportunities in California Industry

“…Research report entitled "Automated Demand Response Opportunities in Wastewater Treatment Facilities" (Thompson et al 2008), 2. Data Analysis Report on submetering conducted at San Luis Rey Wastewater Treatment facility in Oceanside, California (Thompson et al 2010a), and 3. Submetering data collection at South East Wastewater Treatment facility in San Francisco, California.…”

“…San Luis Rey is a medium size wastewater treatment facility which processes about 11 million gallons of wastewater daily and is representative of many similar facilities in California. A report was developed upon completion of the 100 day submetering period from 10/2/2009 -1/10/2010 at the plant (Thompson et al, 2010a). Turnkey project management and on-site installation of the data logger and all other end-use devices was provided by the subcontractor Southern Contracting.…”