Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for London County Council]
This page requires JavaScript
132
133
Table 1. Particulars of the Bacteria Beds.
No. | Name of town or district. | Nature of installation. P.—Permanent. T.—Temporary. | Number of beds. | Distinctive number or name of each bed. | Average or working area of the beds. Square feet. | Measurement of the beds. | Depth of the beds. Feet. | Material and size of the material of which the beds are composed. | Thickness of e ch layer of material, arranged in their order in the beds, from the top downwards. | Method of under-draining the beds. | Actual or estimated cost of making the beds. | Actual or estimated cost per acre of making the beds. | Cost of treating sewage per million gallons. | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
At top. Feet. | At bottom. Feet. | |||||||||||||
37 | Reigate | T. | l | Primary coarse | 450 | 21 ft. 3 in. (square) | ... | 3.5 | Broken bricks, coke and cinder, 3 inch to 1 inch mesh½ 1½ inch to ¾inch mesh ½ inch to 1/12inch mesh Broken bricks and coke ½ inch to 1/12 inch mesh ½ inch to 3/16 inch mesh Polarited clinkers,½ inch to 3/16 inch mesh Gas coke above 1½ inch mesh | 1 foot 6 inches | Agricultural tiles | £ s. d. | £ s. d. | £ s. d. |
1 „ 6 ,, | ||||||||||||||
6 „ | ||||||||||||||
l | Secondary fine | 450 | 24 ft. dia. (circular) | 3.5 | 9 „ | Bricks laid as stretchers with headers above ½ inch open joints | ||||||||
9 „ | ||||||||||||||
1 „ 6 „ | ||||||||||||||
38 | Rochdale | T. | 2 | 1,800 (each) | 48 (in diameter) | 9 | Uniform throughout | Perforated semi-circular 18 inch pipes laid on bricks on a concrete floor | 5,000 - -(about) for construction of beds and coke only | 4 - - estimated | ||||
39 | Salford | P. | ... | Roughing beds | ... | ... | ... | 3 | Gravel (fine) | ... | ... | 7,000 - - | - 16 -(exclusive of chemical precipitation and pumping) | |
T. | 14 | 126 | ... | ... | 5 and 8 | Cinder, between 6 wire mesh and 2 wire mesh to inch | ||||||||
1, 2, 3 | ||||||||||||||
40 | Sheffield | T. | 3 | let contact | 45,000 | ... | 5 | Coke | ||||||
1, 2, 3 | ||||||||||||||
3 | 2nd contact | 40,500 | 31/3 | Coke | ||||||||||
41 | Southport | T. | 2 | Coarse | 900 | 30x30 | 24 x 24 | 3 | Coke,½| inch mesh | Uniform | By 6 inch open jointed earthenware pipes | 250 ... - (approximately) | ... | |
1 | Fine | (each) 900 | 30x30 | 24 x 24 | 3 | Coke, ½ inch mesh | ||||||||
42 | Swinton and Pentlebury | P. | 10 | Primary | ... | 75x75 | ... | 3.25 | Rough clinkers | 12 inch | ||||
10 | Secondary | ... | 75x75 | ... | Cinders above ½ inch mesh | 9 inch | ||||||||
Cinders above ¾ inch mesli | 6 inch | |||||||||||||
Cinders1/8 inch to 3/8 inch mesh | 12 inch | |||||||||||||
43 | Wolverhampton | T. P. | 2 | 1 | 810 | ... | 4.25 | Slack | Uniform | 6 inch channels covered with perforated inverts | 3,000 - - | |||
2 | 4,500 | 4.25 | Furnace ashes,3/16 in. to 1½ in. mesh | |||||||||||
44 | Wednesbury | T. | 1 | Primary | ... | ... | 3 | Furnace clinkers, 2 inch | 24 inch | |||||
to 1 inch mesh Furnace clinkers, ¾ inch | 6 inch | |||||||||||||
to 5/8 inch mesh Furnace clinkers, ½ inch to 1/4 inch mesh | 6 inch | |||||||||||||
1 | Secondary | ... | ... | ... | 5 | Coal, ¾ inch mesh | 3 inch | |||||||
Coal, ½ inch mesh | 3 inch | |||||||||||||
Coal, ¾ inch to 1/4 in mesh | 24 inch | |||||||||||||
... | 1 | Secondary | 2,520 | ... | ... | 5 | Coal, 3/16 inch to 3/16 inch mesh Fine dust Granite, same size as | 24 inch 6 inch | ||||||
45 | West Bromwich | P. | 1 | Single contract | 2,520 | 60 x 42 | ... | 3 | coal bed Engine ashes, ½ inch to | Not graded | No under drains in any of the beds. Valves fixed at the side for emptying | 400 - - | ||
1 | Primary | 7,200 | 120 x 60 | ... | 35 | 2 inch mesh Engine ashes, ½ inch to | 600 - - | |||||||
1 | Secondary | 7,200 | 120 x 60 | ... | 3 | 2 inch mesh Engine ashes, 1/8 inch to | 600 - - | |||||||
46 | Worcester | ... | 3 | 80x3 | ... | 2 | ½ inch mesh Furnace ashes, 1 inch to 1/20 inch | No under drains |