A pond containing algae that requires the use of a compressor is classified as what?

A pond containing algae and requiring the use of a compressor is classified as an aerobic pond. In aerobic ponds, oxygen is essential for the breakdown of organic matter, and algae play a crucial role in producing this oxygen through photosynthesis. The introduction of a compressor further aids in increasing the dissolved oxygen levels in the water, supporting aerobic bacteria that help decompose organic waste effectively.

Facultative ponds are designed to support both aerobic and anaerobic processes, functioning under varying conditions of oxygen availability. While they may also contain algae, they do not necessarily require a compressor to maintain their ecological balance. Anaerobic ponds lack oxygen and primarily rely on anaerobic processes for decomposition, which would not support the type of healthy algae growth found in aerobic systems. Settled ponds are typically used for sedimentation and do not involve the active aeration needed to support algae growth, thus indicating that they are not classified in the same manner as aerobic ponds.

Therefore, the classification of the pond as aerobic is appropriate due to its reliance on oxygen-rich conditions facilitated by mechanical aeration to sustain the algae and the associated biological processes.