Industrial Utility Efficiency

# Blower Systems

Blower & Vacuum Best Practices interviewed Henryk Melcer, Senior Process Engineer, Vice President, at Brown and Caldwell.

We’re headquartered in Denver, Colorado. In all, we have more than 1,700 professionals working in nearly 50 locations, primarily in mainland USA. About 45% of our work is focused on wastewater engineering now, having made a conscious effort to diversify into water treatment and industrial wastewater treatment. That was after we absorbed Dr. Eckenfelder’s old company, which is ironic because it came full circle for me. We also carry out environmental impact assessments, water resources modeling, collection system and stormwater modeling, and a range of other services.

## Helping Wisconsin Wastewater Treatment Facilities Save Energy

Leidos Engineering, LLC., is responsible for implementing the Wisconsin Focus on Energy® Large Energy Users (LEU) Program in Wisconsin. Blower & Vacuum Best Practices interviewed Leidos Engineering’s Joseph Cantwell, P.E., Senior Energy Management Professional, Focus on Energy – LEU Program, to learn how the firm works with Focus on Energy to help wastewater treatment facilities in the dairy state reduce energy consumption and save costs.

## Brown and Caldwell: Tackling Wastewater Aeration Challenges

Blower & Vacuum Best Practices interviewed Henryk Melcer, Senior Process Engineer, Vice President, at Brown and Caldwell.

We’re headquartered in Denver, Colorado. In all, we have more than 1,700 professionals working in nearly 50 locations, primarily in mainland USA. About 45% of our work is focused on wastewater engineering now, having made a conscious effort to diversify into water treatment and industrial wastewater treatment. That was after we absorbed Dr. Eckenfelder’s old company, which is ironic because it came full circle for me. We also carry out environmental impact assessments, water resources modeling, collection system and stormwater modeling, and a range of other services.

## Blower System Integration for Wastewater Aeration Applications

The overall wastewater treatment process is complex, and each step is integral to ensuring water is properly purified. Effluent ends up in the plants, containing substances that must be removed before the water can be properly cleaned and returned for use. The range of potential contaminants is almost endless and can include food, pulp, waste, or other substances. Afterwards, the water requires further scrubbing, with the aid of bacteria. It is in this part of the process that compressed air (ideally provided by energy-efficient rotary lobe blowers) plays a vital role.

## APG-Neuros Retrofits San Bruno Aeration System with New Turbo Blowers

A facility audit examined the plant electrical energy consumption to find ideas to reduce plant energy use while meeting the process demand. Based on discussions with plant staff and a brief review of the process, it was decided to focus the effort on reducing the electrical energy required to provide aeration air to the secondary activated sludge process. The aeration air blowers were the largest consumers of electrical power in the plant and significantly less efficient than the newer blowers that have been introduced to the market place in the recent years.