[Report of the Medical Officer of Health for London County Council] page -

London County Council 1900

[Report of the Medical Officer of Health for London County Council]

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Table: Table XI.— Results of the Incubation at 80° F. of Settled Sewage, of " Chemical " Effluent, and of Coke-bed Effluent at the Southern Outfall Works. (Series III.)All quantities, except where otherwise stated, are expressed in parts per 100,000.

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Table XI.— Results of the Incubation at 80° F. of Settled Sewage, of " Chemical " Effluent, and of Coke-bed Effluent at the Southern Outfall Works. (Series III.)

All quantities, except where otherwise stated, are expressed in parts per 100,000.

Date	Settled sewage as supplied to No. 1 coke-bed.			Settled sewage as supplied to No. 2 coke-bed.			Effluent from the chemically treated and sedimented sewage.			Effluent from No. 1 coke-bed.			Effluent from No. 2 coke-bed.
	Oxygen absorbed from permanganate in 3 minutes at 80° Fah.		As to whether the liquid was putrescible or not.	Oxygen absorbed from permanganate in 3 minutes at 80° Fah.		As to whether the liquid was putrescible or not.	Oxygen absorbed from permanganate in 3 minutes at 80° Fah.		As to whether the liquid was putrescible or not.	Oxygen absorbed from permanganate in 3 minutes at 80° Fah.		As to whether the liquid was putrescible or not.	Oxygen absorbed from permanganate in 3 minutes at 80° Fah.		As to whether the liquid was putrescible or not.
	At once.	After incubation for 7 days.	As to whether the liquid was putrescible or not.	At once.	After incubation for 7 days.	As to whether the liquid was putrescible or not.	At once.	After incubation for 7 days.	As to whether the liquid was putrescible or not.	At once.	After incubation for 7 days.	As to whether the liquid was putrescible or not.	At once.	After incubation for 7 days.	As to whether the liquid was putrescible or not.
1900.
Dec. 11	1.905	6.250	Yes	2.285	6.538	Yes	3.524	8.077	Yes	0.857	0.481	No	0.857	0,673	No
„ 12	3.029	8.835	Yes	3.029	9.709	Yes	3.509	8.738	Yes	1.154	1.651	?	1.058	1,359	No
„ 13	3.725	11.250	Yes	4.020	11.731	Yes	3.431	7.404	Yes	1.078	1.731	?	1.274	1,442	No
„ 14	3.204	8.654	Yes	3.398	8.461	Yes	3.498	6.827	Yes	1.262	1.250	No	1.262	1,346	No
„ 15	2.913	8.270	Yes	3.010	8.942	Yes	3.689	7.308	Yes	1.165	1.346	No	1.262	1,250	No
Average	2.955	8.652		3.148	9.076		3.530	7.671		1.103	1.292		1.143	1,214
Percentage increase	—	192.8		—	188.3		—	117.3		—	17.1		—	6,2
Appearance of the liquid after incubation for seven days.
Dec. 11	Black. Strong H2S			Black. Strong H2S			Black. Very strong H2S			Clear and bright. No odour			Yellow colour. Earthy odour.
„ 12	Black. Much H2S			Black. H2S			Black. Very foul			Yellow. Faint earthy odour			Clear. No odour.
„ 13	Black. H2S			Black. H2S			Black. Much H2S			Dark. Faint odour			Darkish. No odour.
„ 14	Black. H2S			Black. H2S			Black. Small quantity H2S			Clear. No odour			Clear. No odour.
„ 15	Black. H2S			Black. H2S			Black. H2S			No odour			No odour.