Pulp & Paper
Venturi-based gas injection systems have been applied in pulp and paper process water and wastewater treatment processes to improve oxygen transfer and reduce maintenance in applications such as…
PROCESS WATER
Aeration of white water chests and other process water holding tanks: Prevent anaerobic conditions and minimize the formation of hydrogen sulfide and volatile fatty acids in white water chests—particularly in recycle mills.
WASTEWATER
- Equalization tank aeration and mixing
- High-strength wastewater oxygenation: Reduce oxygen consumption by maximizing the oxygen transfer efficiency of concentrated or pure oxygen injection systems for biological treatment of high-strength wastewater.
- Post treatment reoxygenation: Increase the dissolved oxygen levels in treated wastewater, to satisfy regulatory requirements, prior to discharge. In-line reoxygenation systems oxygenate the treated effluent directly in the main pipeline, eliminating the need for a tank or basin.
Regardless of the application, venturi injectors can help reduce operating costs by improving the oxygen transfer efficiency and reducing maintenance as compared to conventional diffusers and spargers.
For more detail on the applications highlighted above, please see Venturi Injectors Add Efficiency, Green Performance as published in TAPPI Paper360 May/June 2018
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