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.

    772/806 (page 732)
    to harbor water might not be as great as 20 per cent. in actual practice, tests were made using only 5 per cent. of sewage. The data obtained are given in Tables CXLVI and CXLVII. TABLE CXLVI CONSUMPTION OF DISSOLVED OXYGEN ON INCUBATING MIXTURES OF 5 PER CENT. RAW SEWAGE AND 5 Per CENT. SETTLED SEWAGE WITH AERATED HARBOR WATER Source of Dissolved Oxygen Aver. Raw Sewage Settled Sewage Date of Temp. Collection Deg. F.| After Sewage Harbor Water Standing C.c Per Per C.c * ~* | Cent. | Cent. es nee of |Satura-| 2° Litre |7_-,; . Litre Initial} tion — | | | | | | | | | 1913 | Initial | 6.42 | 100 109 6.21 6 hours | 6.05 94 102 6.26 | 21 hours | 0.22 3 5! 0.26 Oct. 28 |Delancey street, } East river, poe 68 24 hours | 0.05 0 0 0.00 corner of Pitt. INOS AS one TABLE CXLVII CONSUMPTION OF DISSOLVED OXYGEN ON INCUBATING MIXTURES OF 5 PER CENT. RAW SEWAGE AND 5 Per CENT. SETTLED SEWAGE WITH AERATED HARBOR WATER Source of Dissolved Oxygen Aver. Raw Sewage Settled Sewage Date of Temp. Collection Deg. F.| After Sewage Harbor Water Standing C.c Per Per C.c Per Per per. ee pt sea ee eee 1 0 atura-| y': Oo atura- Litre | Thitiall tion | Ete [Initial] tion 1913 Initial | 5.82 | 100 92 6.48 | 100 107 6 hours | 4.56 78 75 5.24 80 85 Oct. 30 |Delancey street, } East river, Pier } 70 12 hours | 1.63 | 28 27 3.17 | 48 51 corner of Pitt. INOSAS agen 21 hours | 0.00 0 0 1.49 | 22 24 24 hours | —— | —— | —— | 1.18] 18 19 28 hours | —— | —— | —— | 0.57 9 9 a eee The data given in Tables CXLVI and CXLVII show that in the presence of 5 per cent. of raw sewage the organic matter consumed all the oxygen in the harbor water in 21 hours and that 5 per cent. of settled sewage consumed all the oxygen in about 28 hours.