Main drainage and sewage disposal works proposed for New York City : reports of experts and data relating to the harbor / Report of the Metropolitan sewerage commission of New York ... April 30, 1914.

  • New York (N.Y.). Metropolitan Sewerage Commission
Date:
[1914]
Catalogue details

Licence: Public Domain Mark

Credit: Main drainage and sewage disposal works proposed for New York City : reports of experts and data relating to the harbor / Report of the Metropolitan sewerage commission of New York ... April 30, 1914. Source: Wellcome Collection.

    782/806 (page 742)
    difference was first apparent at about the third hour after exposure to the air, and amounted to 4 or 5 per cent. at the end of 24 hours. ABSORPTION BY MIXTURES OF LAND AND SEA WATER The results obtained in experiments with mixtures are shown in Tables CLXII and CLXITITI. TABLE CLXII OXYGEN ABSORBED BY LAND WATER MIXED WITH SEA WATER Dissolved Oxygen Time Exposed to Air Specific Temperature Gravity Deg. F. C. C. per Per Cent. /Gain per Hour} Gain per Liter Saturation | since last test | 24 Hours Initial ae ee ee eee 1006.5 68 0.28 4 —— L hour's..25.4 ae ee eee 1006.5 68 0.86 14 10% —_—— 2: hOUTa os. eee ee ee 1006.5 68 1.43 23 % oe 3 hourss<% tener ee te es 1006.5 68 1.86 30 7% —— 4 hoursv 73 eat eee te 1006.5 68 2.14 34 4% a 5 OUTS poor ee eee eee 1006.5 68 2.43 39 5% —_— G hours! icoigncae sa eae ee 1006.5 68 2.63 42 3% woe < botirs 5 hoe eee ree 1006.5 68 2.86 46 4% a S houfa cass ie eee eee 1006.5 68 3.00 48 2% 24 HOUNE co Cie oe ier eros 1007.0 68 3.86 62 0.87% 58% TABLE CLXIII OXYGEN ABSORBED BY LAND WATER MIXED WITH SEA WATER Dissolved Oxygen Time Exposed to Air Specific Temperature Gravity Deg. F. C. C. per Per Cent. |Gain per Hour] Gain per Liter Saturation | since last test | 24 Hours Initials oe 2 eee wi. rete 1011.5 70 0.28 5 24 hours 5.25 eee ex os poe 1012.0 70 3.43 60 55% 55% 2 daYR I Foe eee 1012.5 70 4.28 74 69% 14% 3 days: ees ee ee 1012.5 70 4.86 84 79% 10% 4 daya.2 75, SR eee 1012.5 70 5.28 91 86% 7% G.GRyS 575 cc a eee De een 1012.5 70 5.43 94 89% 38% G: da ya. acct en eee 1012.5 70 5.57 96 91% 2% 7 Oaye. Acces Cee ie eas 1012.5 70 5.63 97 92% 1% Tables CLXII and CLXIII show that the mixture of land and sea water behaved in the same general way as either land or sea water, as regards the rate of absorption. The rate was somewhat less than that of undiluted sea water, and slightly greater than that of land water.