Estuary of the River Mersey : The effect of the discharge of crude sewage into the estuary of the River Mersey on the amount and hardness of the deposit in the estuary.
- Great Britain. Water Pollution Research Board
- Date:
- 1938
Licence: Public Domain Mark
Credit: Estuary of the River Mersey : The effect of the discharge of crude sewage into the estuary of the River Mersey on the amount and hardness of the deposit in the estuary. Source: Wellcome Collection.
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![TABLE 71—Effect of Vigorous Stirring on Rate of Sedimentation of Mersey Mud through Various Depths SM = Mersey Estuary Water containing Mud S = Mersey Mud Salinity of Water approximately 25 gm. per 1,000 gm. Length of Con- column | Length | centration through | of time jofmud(gm. Percentage of mud settled after : or which mud} stirred | dry weight was settled; (days). | per 100 10 20 30 50 70 90 2 (ft.). | litres). min. | min. | min. | min. | min. | min. | hours. S448 9 0) 22:°8 5 11 18 31 50 69 o oF 5 7 5 LZ 29 49 61 68 PG 5 6 a 7 15 33 68 85 97 $448 if 0 152k 5 9 13 22, 42 65 5¢ i 6 = 8 21 50 100 125 138 S448 - 0 24-3 4 9 16 40 65 80 og i 3 an 4 11 20 52 79 94 SM121 + S448 BS 0) 18:9 3 6 8 = 42 67 - Fe 3 48 4 9 13 30 50 66 . se 8 3 4 8 18 54 74 85 if re 10 5 a 15 Si 67 86 98 a6 15 aS 4 10 18 48 74 90 SM124 + S448 * 0 16-2 4 8 12 22, 39 58 a is 4 5 3 6 13 37 61 78 S450 Fe 0 25°8 5 11 16 28 49 66 a 3 0 s 5 9 14 26 46 63 - 5 . 5 11 20 53 78 92 = ‘ 5 * 4 8 15 42 69 85 S457 s 0) 30°8 5 1 24 61 79 90 5 > 0 > 5 10 21 55 72 83 ” ”) 0 ” 5 11 had 58 ei 88 = m 9 y is is) 24 56 80 92 fe A S i 4 10 20 53 73 86 fc tS 9 i. 6 13 22, 54 76 90 SM141 + S457 HL 0 30°3 3 10 23 45 58 66 oe ” 9 & 3 Z 16 48 64 73 SM141 + S457 a 0 30-3 3 10 23 45 58 66 as i 7 - 6 45 62 76 83 87 S458 . O 29-2, 3 7 Ws 40 62 76 8 is 7 : 2 5 10 35 62 75 S459 a 0 29 -2, 4 10 18 44 63 74 Pe * 8 . 37 16 SAT) 59 80 9] S461 A 0 27°4 7 13 25 60 wh) 87 a a 5 6 13 aed 53 73 88 S461 e 0 31-0 5 10 17 52 74 86 . vs 8 i 3 Fs MG er de (a 73 S462 - O 30°8 %. 7 15 43 63 73 _ : 0 f + 8 13 31 46 53 . ks Zz td 4 g Ay ae 7 pe 82 es . 7 Pe 4 12 29 57 73 82 SM156 ++ S462 40 0 20-0 2 4 ZR NIG 2708) 44. GD PA - 7 me 3 8 13 31 69 80 84 s 9 0 . 5 9 114 | 28... 47 | 62 | 79 ‘ : 0 - 5 10 15 27 44 59 74 ae ” 7 A 3 9 26 63 78 89 100 x! RS 7 Sf 3 9 27 63 79 89 101](https://iiif.wellcomecollection.org/image/b32171869_0325.jp2/full/800%2C/0/default.jpg)
