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

London County Council 1899

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

This page requires JavaScript

Table: Table 9.—Details op the Analytical Results obtained prom the Treatment op Crude Sewage by Rapid Sedimentation followed by Intermittent Treatment in a Coke.Bed.

Download table as:

Table 9.—Details op the Analytical Results obtained prom the Treatment op Crude Sewage by Rapid Sedimentation followed by Intermittent Treatment in a Coke.Bed.

Date.	Daily average rate of flow of the sewage through the channels.Feet per minute.	Average daily samples of the sewage subjected to sedimentation, collected during 24 hours' flow.				Average samples of the portion of edimented sewage subjected to coke.bed treatment.
		Oxygen absorbed from permanganate in four hours.
		By the total oxidisable matter in the sewage.	By the dissolved oxidisable matter in the sewage.	By the total oxidisable matter in sewage effluent after sedimentation.	By the dissolved oxidisable matter in the sewage effluent after sedimentation.	By the dissolved oxidisable mattei in the sewage effluent after sedimentation and before coke.bed treatment.	By the dissolved oxidisable matter in the effluent from the coke.bed.
1899.
Dec. 24	10.6	6.735	4 082	5.204	3.877	...	...
25	90	6.392	4.227	5.051	4.020	4.316	2.830
26	94	6.916	4.299	6074	4.392	3.720	2081
27	83	7.245	5.102	6.530	5.204	3.855	2081
28	11.5	8061	5.714	6.735	5612	4.400	2.000
29	12.8	8.989	5.555	7171	5.454	3.600	1.700
30	5.8	7938	3 093	6146	3.750	3.500	1.660
31	5.2	7.187	4.270	5.876	3195	...	...
1900.
Jan. 1	99	7.083	4061	5.416	4166	2.963	1.394
2	71	6.562	3.646	5 833	3.750	3.708	1.650
3	63	7.745	4.705	6.372	4.705	5.106	2172
4	43	6019	3.883	4.174	3689	4.480	2059
5	4.8	6.956	5.326	6.521	5.000	4.736	2.020
6	51	6.333	3.888	5.333	4.000	3826	1.913
7	59	6.333	3.444	5444	3.777	...
8	6.9	6.593	4.615	6.252	4.615	3.700	1.500
9	7.3	7.234	4.489	6.489	4042	2.800	1.300
10	65	7174	5.109	6087	5.217	3.333	1.616
11	63	6 739	4.782	6.087	5000	3.737	1.212
12	56	7.766	5.000	6.490	5.319	4.217	1.992
13	5.8	6.989	4.516	5.698	4.622	4.602	2.043
Average percentage purification	7.4	7095	4.467	5.952	4.448	3.922 12.2	1.846
Average percentage purification	...	...	...	161	0.04	12.12	58.7 on the crude sewage. 52.9 on the sedi.mented sewage.