Congressional Edition Volume 3947

Congressional Edition Volume 3947

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1899 edition. Excerpt: ...and then by filtering the ferozoned sewage through a specially prepared filter bed containing polarite, through the medium of which a very high degree of purity is obtained in the effluent. The international system was first put into operation in England about eleven years ago, at the sewage works of the then local board of Acton, now the district council, where the system is still in successful operation. The combination of the ferozone and polarite system has been most successfully carried out since then by a great number of councils, corporations, and other authorities, as it recommends itself on account of the small space required for the tanks and filters, the fact of tbe works being thoroughly under control, the use of no costly plant or machinery, and the minimum amount of labor required to carry on the process. Its consequent economy and assured efficiency have given to the process the foremost place among the sewage-disposal systems of any country. In explanation of the process: The sewage receives its proper proportion of ferozone as it flows from the sewer into a channel through which it passes to the settling tanks, the ferozoned sewage flowing on into another channel, which surrounds the top of the tank on the outside and passes down from it through a series of vertical pipes which enters and delivers the sewage into the tank near the bottom, thus aiding materially the sedimentation of the suspended matters carried by the sewage, and depositing them almost as soon as the sewage has been delivered into the tanks. The sewage water then rises up inside and flows out through iron channels placed across the mouth of the tanks near the top to the filters and comes 1 Forwarded to the Department of Agriculture. out again from the...show more

Product details

  • Paperback | 180 pages
  • 189 x 246 x 10mm | 331g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236818687
  • 9781236818683