? Because oxygen can't diffuse in the biofilm and form an anaerobic zone, it is easy to accumulate organic acids after anaerobic removal.
? The generation of methane mentioned in this paper is also possible in theory, so the requirements of methane emission limit at the factory boundary are mentioned in the relevant specifications, that is to say, the biofilm thickness of biological deodorization needs to be controlled? Is it possible to produce more methane exceeding the standard, and methane is a greenhouse gas, so trace emissions may be limited in the future?
? This is:
? ① The retention time is not as long as possible. If it is too long, it may lead to anaerobic acid production and methane production due to insufficient oxygen supply.
? (2) Can oxygen be provided like sewage treatment?
? ③ Some processes add low-temperature plasma, UV or even ozone in front, just to control the membrane thickness in the aerobic zone of biofilm?
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