What physiological state of sludge is associated with the presence of Tardigrades?

Study for the GWWI WEF Wastewater Treatment Fundamentals Test. Review key concepts with flashcards and multiple-choice questions, complete with hints and explanations. Prepare to ace your exam!

The presence of Tardigrades, often referred to as "water bears," is typically associated with older sludge in wastewater treatment systems. Tardigrades are microscopic organisms that are resilient and can survive in extreme environments, including the conditions found in older sludge that may be more stable and nutrient-rich compared to fresher or younger sludge.

As sludge ages, various microbial communities develop, and Tardigrades become more prominent due to the complexity of the ecosystem. These organisms thrive in environments where there is a diversity of available nutrients and decomposing matter, which is characteristic of older sludge. The presence of Tardigrades can often indicate a healthy and balanced sludge microbiome which is generally a sign that the conditions in the treatment system are suitable for the breakdown of organic matter.

Fresh sludge and young sludge typically contain fewer complex communities and organic materials, which would not support the presence of Tardigrades as effectively as older sludge would. Active sludge refers to the biomass in a wastewater treatment process that is currently involved in the degradation of pollutants; while it may have Tardigrades, the most significant and identifiable populations are usually found in the older phases of the sludge lifecycle. Thus, the association of Tardigrades with old sludge reinforces their role

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy