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London County Council 1900

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

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Table: Table II.—Averages of the Figures relating to the Treatment of Crude Sewage in Double Coke-beds at the Northern Outfall Works. (Series II.)All quantities, except where otherwise stated, are expressed in parts per 100,000.

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Table II.—Averages of the Figures relating to the Treatment of Crude Sewage in Double Coke-beds at the Northern Outfall Works. (Series II.)

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

Date.	Solids in suspension.	Oxygen absorbed from permanganate in 4 hours at 80° Fah.		Nitrous nitrogen.	Nitric nitrogen.
Date.	Solids in suspension.	By crude liquid. (Total putrescible matter.)	Byclearliquid. (Dissolved putrescible matter.)	Nitrous nitrogen.	Nitric nitrogen.
	Cruds sewage as supplied to the coke-beds.
1899.
July 4 to 15	• • •	• • •	6. 003	Nil	0.1628
July 17 to September 18	• • •	...	6.028	Nil	0.2290
September 21 to December 9	716	11.218	6.157	0.0082	0.2495
December 11 to 31	696	11.114	6.533	0.0933	0.1878
1900. January	6.32	12.091	5.787	0.0152	0.1194
February	68.0	12.160	5.625	0.1064	0.0782
March	5.64	12.936	6.721	0.0312	0.1181
April	71.8	13.477	7.044	0.0016	0.0120
May	74.6	13.100	6.400	Nil	Nil
Average for 1900	65.0	12.711	6.328	0.0291	0.0783
Average for the whole period	67.6	12.118	6.237	0.0162	0.1617
	Effluent from, primary coarse bed A.
1899.
July 4 to 15	...	...	4.048	Nil	01784
July 17 to September 18	...	...	3.382	0.1911	0.5962
September 21 to December 9	13.3	5.236	3.367	0.1444	0.8071
December 11 to 31	16.2	5.743	3.590	0.0720	0.3520
1900. January	15.3	5.389	3.175	0.0536	0.2905
February	136	4.780	2.810	0.1986	0.5985
March	16.8	5.744	3.276	0.0750	0.4082
April	20.2	7.144	3.600	0.0263	0.3648
May	27.0	7.420	3.020	0.0400	0.3708
Average for 1900	17.7	5.957	3.213	0.0747	0.3937
Average for the whole period	16.1	5.726	3.349	01069	0.5291
	Effluent from secondary coarse bed A.
1899.
July 4 to 15	• ••	...	2.473	Nil	01817
July 17 to September 18 September 21 to December 9...	6.7	3. 493	2.271 2.241	0.1648 0.1018	1.4117 1.6362
December 11 to 31	8.7	3.867	2.543	0.1153	0.6695
1900. January	6.0	3.631	2.145	0.1264	0.7369
February	7.6	3.008	1.802	0.0871	1.3569
March	7.2	3.600	2.248	0.0828	1.1788
April	7.8	4.422	2.644	0.1461	0.9112
May	8.2	3.960	2.360	0.1840	1.1397
Average for 1900	7.2	3.718	2.241	0.1187	1.0325
Average for the whole period	7.2	3.667	2.279	0.1137	1.1948
Average percentage purification of the crude sewage during the whole period	89.4	69.7	63.5	...	...