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]
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Table 1. Particulars or the Bacteria Beds.
No. | Name of town or distriot. | Nature of installation. | Number of beds. | Distinctive number or name of each bed. | Average or working area of the beds. | Measurement of the beds. | Depth of the beds. | 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. | At bottom. | |||||||||||||||||||
P.—Permanent. T.—Temporary. | ||||||||||||||||||||
Square feet. | Feet. | Feet. | Feet. | |||||||||||||||||
27 | Leicester | P. T. | 4 | £ | s | d. | £ | 8. | d. | £ | s. | d. | ||||||||
1 primary | ... | 37 x 30 | ... | Clinker, 1¼ inch to 2¼ inch mesh | Two 6 inch layers of old flattened tins, 1 foot apart, were laid in the body of the beds | \ 6 inch and 4 inch land tile drains ) | ||||||||||||||
2 „ | 37 x 30 | ... | 41 *2 | Clinker, 1¼ inch to 2¼ inch mesh | ||||||||||||||||
3 „ | 37 x 30 | ... | 4i | Clinker, ¾ inch to 1¼ inch mesh | ||||||||||||||||
4 „ | 37 x 30 | ... | 4i | Clinker, ¾ inch to 1¼ inch mesh | ||||||||||||||||
1 secondary | 675 | ... | ... | 3 | Clinker, 1/8 inch to ½ inch mesh | ... | 3 inch land tile drains | |||||||||||||
2 | 675 | ... | ... | 3 | Clinker, 1/16 inch to ½ inch mesh | 6 inch | 3 inch land tile drains | |||||||||||||
Clinker, 1/16 inch to ½ inch mesh | 19 inch mixed | |||||||||||||||||||
Clay ballast, ½ inch to 1 inch mesh | ||||||||||||||||||||
Burnt ballast, inch to ½ inch mesh | 11 inch | |||||||||||||||||||
28 | Lincoln ... | P. | 11 | 1 primary | 3,255 | 71 x 50 | 4 10/12 | Broken coke and clinker Primary beds, 1½ inch 1 mesh Secondary beds, ¾ inch mesh | Same throughout | Two and three inch pipes leading to each valve. In the largo beds there are 4 to 6 valves. The main pipes are provided with branches | 5,000 | - | - | -14- (labour on beds) -12 3 (precipitant) | ||||||
2 secondary | 8,586 | 159 x 54 | ... | 4 10/12 | ||||||||||||||||
3 primary | 3,600 | 72 x 50 | ... | 4 1/1 | ||||||||||||||||
4 secondary | 18,198 | 182 x 100 | ... | 5¼ | ||||||||||||||||
5 primary | 3,303 | 82.5 x 40 | ... | 4 10/12 | ||||||||||||||||
6 secondary | 17,280 | 160 x 108 | ... | 5 | ||||||||||||||||
7 primary | 2,970 | 90 x 33 | ... | 4 10/12 | ||||||||||||||||
9 „ | 3,249 | 79.75 X 40.75 | ... | 4 1/3 | ||||||||||||||||
11 „ | 3,258 | 78.5 x 41.5 | ... | 41/3 | ||||||||||||||||
13 „ | 18,954 | 189 5 x 100 | ... | 5 | ||||||||||||||||
15 „ | 14,301 | 162.5 x 88 | ... | 5¼ | ||||||||||||||||
29 | Liverpool (West Derby sewage farm) | P. | 6 | 1 primary | ... | 70.5 x 29.3 | 28 | Burnt clay, 3 inch mesh | Not graded | 6 inch main with 3 inch collecting drains | ||||||||||
1A secondary | ... | 80.6 x 28.3 | ... | 2.6 | Coke, 3 inch mesh Ballast | 14 inches 18 inches | ||||||||||||||
2 primary | ... | 70.5 x 29.3 | ... | 3 | Red sandstone, 3 inch mesh | Not graded | ||||||||||||||
2A secondary | ... | 80.6 x 28.3 | 3 | Coke breeze, small size | ,, | |||||||||||||||
3 primary | ... | 70.5 x 29.3 | ... | 3 | Ordinary gas coke, 2 inch mesh | ,, | ||||||||||||||
| | 3A secondary | ... | 80.6 x 28.3 | ... | 3 | Sand and gravel | ,, |