Biological Double-Efficiency Process as an Advanced Wastewater Treatment Method to Achieve Substantial Energy and Water Savings

Advanced Biological Wastewater Treatment Method to Achieve Substantial Energy and Water Savings.

BDP Technologies


Irvine, CA

Recipient Location


Senate District


Assembly District



Amount Spent



Project Status

Project Update

There was a substantial period of inactivity due to COVID-19, therefore the agreement was extended to 3/31/2022. The recipient supervised equipment delivery and inspection in August. Due to Stay in Place orders, no on- site construction could occur in August. In late October 2020, the recipient did a project site condition checkup. The recipient intends to accomplish the following prior to the end of the year: complete electrical installation, complete leak repair and redo hydrostatic testing, complete equipment installation, complete laboratory setup, and continue leak repairs.

The Issue

The most common secondary wastewater treatment process for nutrient removal is the activated sludge process. Most activated sludge processes are energy and land/space intensive as they include separated anoxic and aerobic tanks with secondary clarifiers. The infrastructure requires high capital, land footprint, and embedded energy and operation and maintenance costs. The current challenge for wastewater treatment plants in California is to meet the demand from population growth, increasingly stringent regulations and aging infrastructure while potentially reducing the energy and water consumption.

Project Innovation

This project is demonstrating an efficiency technology that targets one of the major energy using steps in wastewater treatment. The Biological Double Efficiency Process (BDP) combines state of the art, easy to maintain aeration technology, airlift circulation/dilution technology, and an integrated all-in-one bioreactor technology to replace the separate anoxic and aerobic tanks associated with secondary clarifiers. The BDP is based on simultaneous nitrification and denitrification principles.

Project Benefits

The innovative BDP technology has the potential to provide substantial energy savings to wastewater treatment plants, including reducing 50 percent of the aeration required for secondary treatment, thus decreasing electrical energy requirements and greatly improves oxygen transfer efficiency to 48-52 percent compared to 20-30 percent in conventional technologies.

Lower Costs


The BDP technology could reduce energy and water consumption and costs at wastewater treatment plants while also meeting California's growing water and wastewater needs. In addition, the BDP technology could provide advantages of reduced energy and land use, carbon footprint (CO2 emissions), waste sludge generation, and operation and maintenance costs. The technology has the potential benefits of substantial 50 percent energy reduction, 30 percent less capital, 50 percent less land required, 50 percent reduction in operation and maintenance costs, and water savings opportunities.

Key Project Members

Project Member

Ben Chi Wai Chow



Veolia North America


ES Engineering Services, LLC


Air Design Solutions


M.H.M. & Associates Enterprise, Inc.


Califonia Arborworks DBA (Southland Forest Management LLC)


O.C. Vacumnn Inc


Match Partners


BDP Technologies


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