  In the course of the preparation of a series of articles for “Surveying and the Civil Engineer,” dealing with the numerous and varied types of appliances used in connection with Sewage Disposal Works, it occurred to the Author that it might be useful to many Engineers, and especially to Students, to have the whole series published in a permanent form for reference. At the same time, it appeared to afford an excellent opportunity to include full details of all the various methods of design and construction in general use, and thus provide a complete work dealing with the whole subject. The result is the present volume, which, it is hoped, will prove of value to those engaged in this branch of engineering. In any future editions that may be required, it will be the endeavour of the Author to omit any details which may have become obsolete, and to include particulars of any new methods of construction, systems or appliances, which may be brought into use from time to time, and he will therefore be glad to receive particulars of new appliances and systems as they are introduced. W. C. EASDALE. 28 Victoria Street,
Westminster, S.W.
1910.
CONTENTS | PAGE | | Introduction | 1 | | Screens: Simple—Rotary—For deep sewers—Mechanical—Other types | 3 | | Storm-Water Overflows: Diverting plate—Fixed weirs—Movable weirs | 16 | | Detritus Tanks: Capacity—Dortmund type—Apparatus for sludge removal | 23 | | Tanks: Various types—Capacities—General construction details—Flow through tanks—Sludge well—Roofs—Inlets and outlets—Precipitation tanks—Dortmund types—Hydrolytic tank—Imhof tank—Skegness tank—Candy-Whittaker tank—Non-septic cylinder—“Kessel”—Separator—Fieldhouse tank—Dibdin slate beds | 29 | | Sludge Disposal: Sludge removal—Apparatus—Chemical mixers—Sewage mixers—Sludge presses—Hydro-extractor for sludge—Sludge draining beds | 71 | | Percolating Filters: General design—Various types of construction—Floors of filters— Sub-drainage—Floor-tiles—Walls of filters—Planning of filters—Filtering material—Grading of material —Methods of distribution—Appliances for distribution —Automatic revolving distributors—Power-driven revolving distributors—Automatic travelling distributors—Power-driven travelling distributors—Fixed distributors—Troughs—Spray-nozzles—Methods of feeding percolating filters—Continuous versus intermittent supply—Supply channels and pipes-Dosing apparatus | 85 | | Effluent Settling Tanks or Humus Pits | 182 | | Sand Filters | 185 | | Contact Beds: Causes of failure—General principles of design—General construction—Methods of distribution —Sub-drainage—Material for filling contact beds —Automatic apparatus | 189 | | Capacity of Percolating Filters and Contact Beds: Relative capacities—Table of requirements | 222 | | Storm-Water Treatment: Stand-by tanks—Methods of construction and operation | 227 | | Measuring Apparatus | 232 | | Sterilisation of Sewage Effluents: Purpose and practicability—Apparatus for manufacture of hypochlorite solutions—Appliance for injection of chemicals | 240 | | Index | 251 |
SEWAGE DISPOSAL WORKS THEIR DESIGN AND CONSTRUCTION
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