The Rialto Bioenergy facility takes wastewater biosolids to produce biogas that is then added to the natural gas pipeline system. The biosolids are heat dried to kill any remaining pathogens, ultimately creating a safe fertilizer product. Drying biosolids generates not only odors but also excessive amounts of air emissions that are harmful to the environment.
Dr. Anders Wistrom, CEO of Centriair (USA) was quoted “we are thrilled to make this partnership with Anaergia and the Air Quality Management District. We can showcase the versatility of Centriair’s near zero emissions technologies to a wider audience as new waste-to- energy facilities are being planned and constructed in California and elsewhere in the United States.”
This project addresses both air quality and climate goals. Replacing the high temperature thermal oxidization unit with ColdOxTM not only eliminates the cost for the fuel required for heating but also eliminates emissions of carbon dioxide, organic pollutants, and nitrogen and sulfur oxides. Eliminating nitrogen and sulfur oxide emissions reduce the potential for the formation of small particles that can be inhaled and penetrate deeply into sensitive parts of the lungs and cause serious health problems.
Air Pollution and Odor Control System
A clean-air solutions provider, Centriair, is taking part in this ambitious project in the Inland Empire to construct the air pollution and odor control system for the biosolids dryer. Air quality emissions and impacts from biosolids treatment include criteria pollutants, greenhouse gases, hazardous air pollutants, and odor emissions. In successive pre-treatment steps ammonia and hydrogen sulfide are removed using a chemical scrubber and adsorption media, respectively. Remaining hazardous air pollutants and reduced sulfur compounds, organic compounds, and odor emissions are eliminated using Centriair's core technology, ColdOxTM, a photo oxidation technology that utilizes ultraviolet light followed by activated carbon as the polishing step.
South Coast Air Quality Management District
In January 2018, the South Coast Air Quality Management District released a Request for Proposals to solicit projects that result in emissions reductions of nitrogen oxides, organic pollutants and particulate matter. The broad based solicitation was open to a wide range of projects including zero and near zero emissions replacement technologies to achieve emissions reductions. Eighty two proposals were received and twenty-five proposals met the technical and policy objectives of the Air Quality Management District. The Centriair/Anaergia proposal received the highest ranking in the category “stationary source replacement/repower/retrofit efficiency improvement and related infrastructure.”
For more information on Centriair clean air solutions, please visit www.centriair.com , or contact Anders Wistrom, CentriairUSA, Lake Mathews, CA. Direct (951) 323 3801, e-mail firstname.lastname@example.org
Centriair is a Swedish clean tech company specializing in meeting the needs for clean air with a special focus on waste- and food industry segments. Founded in 2007, Centriair is expanding steadily. It has offices and warehouse facilities across Europe, UK and the US. Centriair offers well tested and proven portfolio of air emissions control technologies including:
- ColdOxTM - oxidation of organic pollutants, reduced sulfur compounds and odorants through the use of high intensity ultra violet light and photo chemical oxidation often followed by activated carbon as a polishing step. Oxidation rates of up to 98% at ambient temperatures with minimum energy requirement and ozone slip. Uses include wastewater treatment and pumping; biosolids transport, storage and processing; solid waste reception, sorting and processing.
- CentrOxTM - combines advanced centrifugal separation with the ColdOxTM system in the case where particles in solid or droplet form are present in the gas stream. One hundred percent of particles larger than one micron are routinely removed on a continuous basis. Uses include deep-fat frying and roasting applications in food and beverage industries.
- SulphaRedTM – removal of hydrogen sulfide and other reduced sulfur compounds with catalytic iron filters, adsorption media, etc., as a pretreatment step for ColdOxTM
- DEOTM – low temperature catalytic destruction of broad array of volatile organic chemicals, mercaptans, and other high intensity odorants and near zero nitrogen oxides emissions. Designed for point-source applications at smaller flowrates. Uses include sludge centrifuges, small pump stations, and tank headspace ventilation.