Sewage Disposal Works: Their Design and Construction

_General Construction._—The most important point to be borne in mind in constructing contact beds is, that they must be absolutely watertight. Should they leak in any way, the s...

_Capacity of Detritus Tanks._—Too frequently there is very little evidence of design in these tanks, especially in the provision of suitable sludge outlets. Before all, there sh...

The “Ponding or Intermitting Valve,” supplied by the Septic Tank Co., is shown in Fig. 132. The essential features of this apparatus are two cylindrical vessels of cast-iron or...

_Slate Beds._—From the foregoing it will be gathered that there is a growing tendency to reduce the process of putrefaction in tanks under anaerobic conditions to the minimum, c...

A somewhat similar type of distributor is the “Adams-Cutler” Fig. 100, manufactured by Messrs. Adams Hydraulics, Ltd. In this case the distribution is from spray holes in the pi...

In recent years the provision of proper means of measuring and recording the flow of sewage at disposal works is becoming more general, but there are still a very large number o...

On this question of distribution, one of the most important points to be taken into consideration in forming an opinion as to the best method to adopt is, what happens after the...

Produced by Chris Curnow, Brian Wilcox and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The I...

_Floors of Filters._—In all cases the floors for percolating filters should be of a substantial character. They are usually constructed of cement concrete. The thickness of the...

As the distance which the sewage travels in “continuous flow settlement tanks with chemicals” is frequently an important factor in securing the maximum efficiency, it may be fou...

_Methods of Feeding Percolating Filters._—Under the heading “Methods of Distribution” (page 106), reference is made to some experiments, from the results of which the conclusion...

Messrs. Glenfield and Kennedy, Ltd., also manufacture apparatus for operating contact beds, as shown in Fig. 144. This arrangement of the apparatus delivers the sewage to six be...

Decanting valve, 49 Detritus tanks, 23 ” ” capacity of, 23 ” ” Dortmund type of, 25 ” ” sludge scraper for, 27 Dibdin, W. J., 68, 189 Digby meridioniser, 243 Disc sprays, 155, 1...