The problem of sewage disposal. Composition and character of 1–13 sewage. Action of bacteria. Soils and their value for sewage treatment. Three essential conditions for effective sewage purification. Rates of operation. Preliminary and final treatment. Function and capacity of settling tanks. Their construction. 14–36 Siphon chambers. Use of concrete. Pipe connections. Roof. Baffle boards. Imhoff or Emscher tanks.…
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