Orion Black-Brown

Orion Black-Brown

Orion Black-Brown

Green Mountain Technologies | "Which is better? High Velocity or Low Velocity Aeration Floors"

Bainbridge Island, WA | obb@compostingtechnology.com

Orion is a mechanical engineer and product manager at green mountain technologies, responsible for the containerized composting system, new product development, and assisting with facility design. He has some presentation experience that he gathered through a diversity of experiences ranging from internal company presentations to teaching internationally. He is new to the industry and am excited by the opportunity to grow and share within it.

Session Code: A3

Session Name: Understanding Aeration

Session Time: Wed, January 27, Round 3, 12-1:15 PM EST

Session Description: Interest in aerated composting systems has grown, especially in areas needing tighter controls of emissions. Denali Water operates different systems at their facilities, so is in an excellent position to provide a comparison among them. Then hear research into the pros and cons of high and low speed aeration floors.

Presentation Title: Which is better? High Velocity or Low Velocity Aeration Floors

Presentation Description: The goal of a well designed aerated static pile (ASP) composting system is even air distribution throughout the pile. There are two primary methods of delivering air to a compost pile, high velocity sparger nozzle and low velocity perforated pipe or trench designs. Data is available from different sites, however, the variable nature of compost feedstocks and operating conditions makes it difficult to make meaningful comparisons between systems. Additionally the impacts that management play in the composting process make site to site comparison dubious at best.
The Grimm’s fuel ASP facility in Tualatin, Oregon has both high and low velocity reversing air floors at the same location. This has provided GMT with a unique opportunity to research how high velocity sparger configurations compare with low velocity pipe at grade systems.  The speaker will outline the Grimm’s fuel facility layout with a focus on the high velocity sparger aeration pad and the low velocity pipe on grade systems. They will share temperature and oxygen data collected onsite and discuss the relative performance of each approach. Lastly, they will compare the observational data readings with analytical models and discuss the validity of these models and how they might be improved. With this information GMT takes a closer look at the equations used to analyze aeration pads and assess the accuracy of these predictive models.