Water-Supply
Water-Supply
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In our eReader you can find the full English version of the book. Read Water-Supply Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Water-Supply
What reading level is Water-Supply book?
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♦ Am. $PC. Q. E., 36: 1566. t " Water Supply," p. 115.
Digitized by Google ARTIFICIAL PURIFICATION OF WATER 143 The frequency of cleaning depends, as has been said, upon the condition of the water being filtered, and, for the same water, this condition will vary greatly with the time of year and character of the season. Thus the London beds experi- ence difficulty from March to July; becoming during those months quickly clogged with fish-spawn, which arrests filtration, and at times renders it ...necessary to remove* the water from the top of the filter before the obstruction can be taken off with rake and shovel.
From July until October another difficulty, scarcely less serious, is the growth of vegetation, which begins upon the bottom.
Roughly stated, it may be said that a filter becomes ''dead*' (i.e., nearly impervious to water), and consequently demands cleaning, once every three or four weeks in sununer and about half as frequently in winter; but it is not possible to lay down hard-and-fast general rules applicable to all filters.
What to read after Water-Supply?
You can find similar books in the "Read Also" column, or choose other free books by Mason, William Pitt, 1853-1937 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
♦ Am. $PC. Q. E., 36: 1566. t " Water Supply," p. 115.
Digitized by Google ARTIFICIAL PURIFICATION OF WATER 143 The frequency of cleaning depends, as has been said, upon the condition of the water being filtered, and, for the same water, this condition will vary greatly with the time of year and character of the season. Thus the London beds experi- ence difficulty from March to July; becoming during those months quickly clogged with fish-spawn, which arrests filtration, and at times renders it ...necessary to remove* the water from the top of the filter before the obstruction can be taken off with rake and shovel.
From July until October another difficulty, scarcely less serious, is the growth of vegetation, which begins upon the bottom.
Roughly stated, it may be said that a filter becomes ''dead*' (i.e., nearly impervious to water), and consequently demands cleaning, once every three or four weeks in sununer and about half as frequently in winter; but it is not possible to lay down hard-and-fast general rules applicable to all filters.
What to read after Water-Supply?
You can find similar books in the "Read Also" column, or choose other free books by Mason, William Pitt, 1853-1937 to read onlineMoreLess
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