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Activated sludge was recommended because of the relatively low cost compared to many other alternatives. The 5.5 mgd flow requirement calls for a relatively large sized plant, what treatment do you have now, or will this be a new petrochemical plant? What are your effluent requirements in...

Another option to consider is carbon scrubbing. At many of our wastewater pump stations and some of our smallest plants we have small (55-gallon drum) to medium sized carbon systems in use. The odors are non-detectable and we infrequently have to change out the carbon. Many of our systems are...

Do you have any subsequent influent/effluent BOD data and your process dissolved oxygen and pH data to tell you what is coming in, how well its being treated, and whether or not you're adding enough oxygen and maintaining good process pH? If you do, what is data? Assume this is some sort of...

I see you may still be looking into, and thought of one more potential problem you will need to consider if you pursue the "fine bubble" - you will encounter problems with grit (and probably screenings) deposition which will foul your fine bubble diffusers! (There is insufficient air...