A New Process for Purifying the Waters Supplied to the Metropolis by the Existing Water Companies:: Rendering Each Water Much Softer, Preventing a Fur on Boiling, Separating Vegetating and Colouring Matter, Destroying Numerous Water-insects, and Withdrawing from Solution Large Quantities of Solid Matter, Not Separable by Mere FiltrationR. and J.E. Taylor, 1841 - 15 |
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A New Process for Purifying the Waters Supplied to the Metropolis by the ... Thomas Clark Podgląd niedostępny - 2019 |
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500 gallons added to nine bicarbonate of lime boiler burnt chalk carbonate of soda carbonic acid caustic lime chalk falls clear and colourless COLOURING MATTER consistence proper cost cubical feet deposit of chalk deposited chalk destroyed diffused mud dissolved in water distilled EXISTING WATER COMPANIES filtration form a lather FUR IN BOILING gallons of water gross water-rent hard water hardening matter impurity insects known Processes lime-water metropolis millions of cubical mixture nine ounces ounces added ounces of carbonic ounces of caustic ounces of soap panies patented process pound of chalk PROCESS FOR PURIFYING Process will separate purified water quantity of soap Quantity of Water saving in soap SEPARATING VEGETATING seven ounces six millions soap and soda soda consumed soft water SOFTENED subsidence THOMAS CLARK three ounces tion TONS A DAY twenty-four ounces twenty-seven ounces UNIVERSITY OF ABERDEEN unpurified VEGETATING AND COLOURING washing water supplied WATER-INSECTS waters of London whole manufactory
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Strona 4 - In the former mode, a pound of pure chalk becomes dissolved in water in consequence of losing seven ounces of carbonic acid. To dissolve in the second mode, not only must the pound of chalk not lose the seven ounces of carbonic acid that it contains, but it must combine with seven additional ounces of that acid. In such a state of combination chalk exists in the waters of London, dissolved, invisible, and colourless, like salt in water. A pound of chalk, dissolved in 560 gallons of water by seven...
Strona 5 - Any lime-water may be mixed with another, and any solution of bicarbonate of lime with another, without any change being produced. The clearness of the mixed solutions would be undisturbed. Not so, however, if limewater be mixed with a solution of bicarbonate of lime. Very soon a haziness appears ; this deepens into a whiteness, and the mixture soon acquires the appearance of a well-mixed whitewash. When the white matter ceases to be produced it subsides, and, in process of time, leaves the water...
Strona 5 - ... at the same time that the other pound of chalk, being deprived of the extra seven ounces of carbonic acid that kept it in solution, reappears. Both pounds of chalk will be found at the bottom after subsidence. The 540 gallons of water will remain above, clear and colourless, without holding in solution any sensible quantity either of caustic lime or of bicarbonate of lime.
Strona 4 - ... of two processes of a very opposite kind. When burned, as in a kiln, chalk loses weight. If dry and pure, only nine ounces will remain out of a pound of sixteen ounces. These nine ounces will be soluble in water, but they will require not less than forty gallons of water for entire solution. Burnt chalk is called caustic lime, and water holding caustic lime in solution is called lime-water. The solution thus named is perfectly clear and colourless. The seven ounces lost by a pound of chalk on...
Strona 5 - ... acid, so as to form 560 gallons of a solution of bi-carbonate of lime ; and that the two solutions are mixed, making up together 600 gallons. The nine ounces of quick-lime, from the...
Strona 4 - The other mode of rendering chalk soluble in water is nearly the reverse. In the former mode, a pound of chalk becomes dissolved in water in consequence of losing seven ounces of carbonic acid. To dissolve in the second mode, not only must the pound of chalk not lose the seven ounces of carbonic acid that it contains, but it must combine with seven additional ounces of that acid. In such a state of combination...
Strona 5 - These nine ounces of quicklime and seven ounces of carbonic acid form sixteen ounces — that is, one pound of chalk, which, being insoluble in water, becomes visible at the same time that the other pound of chalk, being deprived of the extra seven ounces of carbonic acid that kept it in solution, reappears. Both pounds of chalk will be found at the bottom after subsidence. The 600 gallons of water will remain above, clear and colourless, without holding in solution any sensible quantity either of...
Strona 4 - Burnt chalk is called quick-lime, and water holding quick -lime in solution is called lime-water. The solution thus named is perfectly clear and colourless. " The seven ounces, lost by a pound of chalk on being burned, consist of carbonic acid gas — that gas which, being dissolved under compression by water, forms what is called soda-water.
Strona 3 - ABERDEEN, for a new mode of rendering certain waters, (the water of the Thames being amongst the number,) less impure and less hard, for the supply and use of ma»«factories, villages, towns, and cities.
Strona 4 - ... but it must combine with seven additional ounces of that acid. In such a state of combination, chalk exists in the waters of London — dissolved, invisible, and colourless, like salt in water. A pound of chalk...