Water Works PracticeWilliams & Wilkins, 1926 - 814 pages |
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Page 199
... soda ash or lime with alum in order to bring about coagulation and to prevent undecomposed alum remaining in the treated water . Lime is available on the market as " quick - lime " or " hydrated lime . " Quick - lime contains 85 to 90 ...
... soda ash or lime with alum in order to bring about coagulation and to prevent undecomposed alum remaining in the treated water . Lime is available on the market as " quick - lime " or " hydrated lime . " Quick - lime contains 85 to 90 ...
Page 200
... Soda ash or " dry sodium car- bonate " is furnished as a powder in sacks of 200 pounds or in barrels . Chemical feeding . The oldest and most common method of feed- ing alum is to dissolve a known weight of the lump material in a tank ...
... Soda ash or " dry sodium car- bonate " is furnished as a powder in sacks of 200 pounds or in barrels . Chemical feeding . The oldest and most common method of feed- ing alum is to dissolve a known weight of the lump material in a tank ...
Page 203
... soda ash , or acids . Laboratory control . For the laboratory control of the coagulation process facilities should be afforded for the easy and frequent col- lection of water samples representing the source of supply untreated , the ...
... soda ash , or acids . Laboratory control . For the laboratory control of the coagulation process facilities should be afforded for the easy and frequent col- lection of water samples representing the source of supply untreated , the ...
Page 206
... soda ash added to make up for the deficiency of the natural alkalinity , resulting in the forma- tion of an hydroxide of aluminium which is an insoluble compound . The precipitate is flocculent or gelatinous in nature and suspended ...
... soda ash added to make up for the deficiency of the natural alkalinity , resulting in the forma- tion of an hydroxide of aluminium which is an insoluble compound . The precipitate is flocculent or gelatinous in nature and suspended ...
Page 251
... soda ash process of water softening The hardness of almost all water supplies is due to four mineral compounds which they hold in solution : Calcium bi - carbonate ( ordinarily known as limestone ) Magnesium bi - carbonate ( ordinarily ...
... soda ash process of water softening The hardness of almost all water supplies is due to four mineral compounds which they hold in solution : Calcium bi - carbonate ( ordinarily known as limestone ) Magnesium bi - carbonate ( ordinarily ...
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Common terms and phrases
aeration amount annual applied assessed average bacteria basins buildings capita Capital stock carbon cast iron cent charge chemical chlorine cities coagulation coli Commission connection consumption Contractor corrosion cost Deficiency Scale depreciation determined diameter distribution system effect efficiency electrolysis engine equipment feet filter capacity filtered water filtration fire flow fire protection service fire service furnished gallons goiter hose hydrant inches inches inches increase installed iodin Item less lime limits material maximum measure metal meter method million gallons municipal necessary operation organisms oxygen pipe plant pollution pounds pressure public fire pumping purification quantity rapid sand filters records removal reservoirs revenue sample sand filters sanitary sieves slow sand filters soda ash sodium iodide square standard storage streams structures surface tion tube boilers turbidity typhoid fever United usually valve wastes Water Company water supply water tube boilers
Popular passages
Page 515 - Before coming to the question of profit at all the company is entitled to earn a sufficient sum annually to provide not only for current repairs but for making good the depreciation and replacing the parts of the property when the}- come to the end of their life.
Page 808 - elder days of art" each artist or craftsman enjoyed the privilege of independent creation. He carried through a process of manufacture from beginning to end. The scribe of the days before the printing press was such a craftsman. So was the printer in the days before the machine process. He stood or fell, as a craftsman, by the merit or demerit of his finished product. Modern machine production has added much to the worker's productivity and to his material welfare; but it has deprived him of the...
Page 535 - The proper allowance for such depreciation of any property used in the trade or business is that amount which should be set aside for the taxable year in accordance with a consistent plan by which the aggregate of such amounts for the useful life of the property in the business...
Page xx - e might require, 'E went an' took — the same as me! The market-girls an fishermen, The shepherds an' the sailors, too, They 'eard old songs turn up again, But kep' it quiet — same as you! They knew 'e stole; 'e knew they knowed. They didn't tell, nor make a fuss, But winked at 'Omer down the road, An' 'e winked back — the same as us!
Page 738 - ... at which time, if the unpaid balance of the amount to be paid under this contract shall exceed the expense incurred by the Owner...
Page 731 - THIS AGREEMENT made the. day of in the year Nineteen Hundred and by and between hereinafter called the Contractor, and hereinafter called the Owner, WITNESSETH, that the Contractor and the Owner for the considerations hereinafter named agree as follows: ARTICLE!.
Page 18 - Interstate quarantine service: For cooperation with State and municipal health authorities in the prevention of the spread of contagious and infectious diseases in interstate traffic, $25,000.
Page 734 - The Contractor shall at all times enforce strict discipline and good order among his employees, and shall not employ on the work any unfit person or anyone not skilled in the work assigned to him.
Page 740 - Neither the final payment nor any part of the retained percentage shall become due until the Contractor, if required, shall deliver to the Owner a complete release of all liens arising out of this contract, or receipts in full in lieu thereof...
Page 742 - Engineer, and then only until the arbitrators shall have an opportunity to determine whether or not the work shall continue until they decide the matters in dispute. The demand for arbitration shall be delivered in writing to the Engineer and the...