The Surveyor and Municipal and County Engineer, Vol. 51

The Surveyor and Municipal and County Engineer, Vol. 51 : January 5 to June 29, 1917 (Classic Reprint)

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Excerpt from The Surveyor and Municipal and County Engineer, Vol. 51: January 5 to June 29, 1917 From the settling tank the effluent flows over a weir to the creek or into the pond. The pond is formed by two dams placed across the abandoned bed of a small stream. It covers about acre, and is 3 it. Deep in the deepest part. The sludge is withdrawn from the settling chamber by an air lift, and can be discharged into the raw sewage, where it enters the aeration chamber, or can be diverted for experimental purposes, or to the sewer. Some sludge has been dried on a sand bed having an area of 250 sq. Ft. And a depth of 8 in. The drying of sludge on the sand bed is not considered a success Air is supplied for aeration and for the air-lift by a rotary positive-pressure blower having a rated capacity of 300 cub. Ft. Per minute, driven by a 15-h.p. Electric motor. The air is filtered through cheese cloth spread over a wire box before it enters the blower suction pipe. The air is measured through a Venturi meter. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.show more

Product details

  • Paperback | 624 pages
  • 152 x 229 x 32mm | 821g
  • Forgotten Books
  • United States
  • English
  • , black & white illustrations
  • 0243158408
  • 9780243158409