Hi Alan, Appreciate your time for answering my doubts. This info is very useful, I'm now on the safe side regarding one design of a WWTP I carried out, as well as the operation. Thanks again!

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Hi Alan,
Appreciate your time for answering my doubts. This info is very useful, I'm now on the safe side regarding one design of a WWTP I carried out, as well as the operation. Thanks again!