Upgrading with Submerged Biological Filters,
MID-SOUTH DISTRIBUTORS JACKSONVILLE AL
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It is now possible to materially upgrade any aerobic wastewater treatment system by just adding three types of very simple devices to the secondary aeration and settling tanks, with the work done in-house with off-the-shelf materials. It makes no difference how big the systems are or of what type. And, the cost of doing this, related to a gpd basis, is low for a very small system and nominal for a big system. Further, if the primary treatment component is then eliminated, except for non-organic grit removal, the total overall treatment will be even better than it was and much less expensive. Digester loads will be decreased, and in many cases the digesters can be eliminated, as can tertiary treatment. This observation is not based on just theory or on the results of bench-type experiments. A working system incorporating these techniques and devices has been operating in Jacksonville, Alabama, for over eight years, with rotifers clearly visible in its clarifier, consistently producing an effluent of 10 BOD5SS mg1, or -, even under periods of forced extreme overloads.