What specific operational action is required to maintain the activated sludge process as discovered by its original inventors?
Answer
Continuous aeration of the sludge
The core of the activated sludge process involves supplying a constant flow of oxygen to the microorganisms within the sewage. By providing continuous aeration, the microbial population is encouraged to multiply and consume the organic waste present in the sewage. This active biological process allows for the rapid stabilization of organic matter, which is significantly more efficient than previous methods that relied on gravity settling and slow, often odorous, decomposition.
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