True or False: Filaments from the liquid process stream can contribute to foaming in digesters.

Filaments from the liquid process stream can indeed contribute to foaming in digesters, making the statement true. In wastewater treatment, filaments are microorganisms that can form long, thread-like structures. When these filaments proliferate, especially in anaerobic digesters, they can lead to the formation of stable foam. This foaming may result from the surface-active substances produced by these filaments, which can trap gas bubbles, creating a layer of foam on the surface. This foam can interfere with the operation of digesters, leading to issues such as foam overflow, reduced digester efficiency, and increased operational costs.

The presence of filaments, particularly when certain environmental conditions are favorable, can change dynamics within the digester environment and contribute to foam formation. Thus, recognizing the potential for filaments to contribute to foaming is crucial for operators in wastewater treatment facilities to manage and mitigate such issues effectively.