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Actual vs. Wahlberg-Predicted RAS TSS

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December 19, 2016

Refinery Wet Gas Scrubber

This may seem a little odd, perhaps, but there is one unit process in particular that I really enjoy evaluating and that is wet gas scrubbers at refineries. Of most interest to me is the choice of chemistry used to settle solids (catalyst fines) in the scrubber blowdown. My focus here, but only in fairly gener...

October 24, 2016

Primary and Secondary Clarifiers

This page provides information on the expected performance of primary and secondary clarifiers. Removal efficiencies, detention times, and other parameters have been summarized to provide a handy reference. Of course, every wastewater plant is different, with potentially vast differences between municip...

October 21, 2016

Oil-Water Separation

Though municipal wastewater treatment plants have to deal with their share of oil and grease (O&G), this page on oil-water separation really applies more to industrial wastewater systems, particularly those associated with petrochemical plants.

There are several variables that can significantly influence the perform...

October 9, 2016

Three Sludge Dewatering Units

The data presented on this page comes primarily from two sources as follows:

1. An excellent textbook entitled "Wastewater Sludge Processing." The complete reference for this textbook is: Turovskiy, Izrail S. and P.K. Mathai. "Wastewater Sludge Processing." Hoboken, New Jersey: John Wiley & Sons, Inc. 2006.

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