West by Southwest to Stickney

Chapter 6 Photos, 21–45

(photos 1–20 here)

Central Area Water Reclamation Plants

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Photo 6.39

Looking northwest on November 16, 1938, over the sludge concentration tanks. Settled, more dense sludge on the tank bottom is moved to the near end by scrapers mounted on the chains and piped to the sludge disposal building for further processing. where the sludge was dewatered in rotary vacuum filters prior to heat drying. (MWRD photo 24547)