Sewerage and Sewage Treatment

by Harold E. Babbitt

[165]. The uniformity coefficient is the ratio of the diameter of the largest particle of the smallest 60 per cent, by weight, to the effective size.

[166]. Interest at 6 per cent.

[167]. Worcester figures.

[168]. This method may show a profit from the sale of sludge.

[169]. Sewage Disposal, 1919, p. 223.

[170]. See Eng. News, Vol. 9, 1883, p. 203, and Vol. 29, 1893, p. 27.

[171]. American Sewerage Practice, Vol. III.

[172]. Reference 11, at end of this chapter.

[173]. Reference 15.

[174]. Reference 2.