London's Pulse: Medical Officer of Health reports 1848-1972

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London County Council 1900

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

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Table 5.Particulars as to the working of the Septic Tanks.

No.Name of town or district.Name or number of tank.Dates between which the tank was in use.Length of time during which the tank was used. "Weeks.Rate of flow of sewage through the tank. Gallons per day.Quantity of sewage passed into the tank. Gallons.Quantity of sludge left in the tank. Tons.Percentage of moisture in the sludge left in the tank.Percentage reduction in the amount of sludge effected by septic action.
38Rochdale12 years200,000 (3 months} 160,000 (afterwards)130,000,000200 ofpressed sludge of 60 per cent, moisture89.826.5 (total solids) 62.0 (suspended solids)
42Swinton and Pentlebury
43Wolverhamptonl31 May, '99, to 16 Oct., '0068250,000 (average) 50,000 to 500,000.........330
45West Bromwich