Chicago : Engineering and Contracting Pub. Co. · leaf 423
acteria inhabit the tankand perform the function of partially changingthe solid matter into liquids and gases. They 408 ENGINEERING & CONTRACTING Vol. XXXVI. No. 16. are known as anaerobic (those working with-out oxygen), and facultative (those workingeither with or without oxygen). The… … till . , ,. Fig. 3—Section and Plan of UndergroundIntermittent Sand Filter. function of this class is to transform the or-ganic matter of the sewage into harmless andodorless mineral matter, thus causing or tend-ing to cause the disappearance of the danger-ous germs of the original sewage. A plant…
Buildings
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