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 80—continued Concentra- thaws sgt hacen Percentage of mud settled through 9 ft. after : nae on before after tration of oy addition addition unsettled Sr eens of of sewage ae sewage sewage (per cent.).| 10 min. | 20 min. | 30 min. | 50 min. | 70 min. | 90 min. : (min.). (hrs.). 34-2 0 1 0 27 aD 47 51 53 53 ” 30 1 0 25 47 58 63 65 66 3 60 1 0 6 28 40 49 53 56 36:7 0 1 co 19 49 56 61 63 64 ” 30 1 5 25 57 64 68 70 Ty ” 60 1 5 10 38 47 Sil 53 54 oes 10 1 0 38 67 75 80 83 85 = 30 1 0 32 Tez 83 90 94 96 $a 60 1 0 29 Al 82 90 93 95 33-9 0 1 1 24 60 vk) 79 82 83 » 30 1 1 25 70 84 92 95 97 ” 60 1 1 sae 73 86 95 98 100 35°5 0 1 0 17 39 44 49 52 53 ” 30 1 0 9 35 43 50 54 56 ne 60 1 0 Dal 53 61 67 71 73 36-3 0 1 1 14 39 58 64 68 70 os 30 1 1 4 27 42 Be 59 61 9 60 1 1 9 36 54 61 66 68 26-4 0 1 0 ws 64 75 82 85 87 28-5 60 1 0 25 74 90 100 | 103 105 28-1 120 1 0 33 92 107 117 ail 123 28-0 0 1 if 18 66 89 103 107 110 27-0 60 1 1 el 75 100 iS 119 122 28-2 120 1 1 27 81 100 109 122, 114 Toe] 0 1 0 5 34 60 81 89 93 23-2 60 1 0) 6 31 59 82 91 96 23-4 120 1 0 6 43 7 99 109 114 23-1 0 1 1 5 23 55 81 91 97 22°6 60 1 1 6 38 77) 100 Heit 116 23-4 120 1 1 4 16 55 92 109 116 31:1 0 1 0 5 29 57 We 79 83 29°7 60 1 0 2 oo 59 80 87 92 30:6 0 1 il ii 49 74 87 92 95 30°3 30 1 1 5 ol 66 98 106 110 29°8 60 1 1 4 28 62 79 84 87 29°3 0 1 0 14 56 73 81 84 87 28-8 30 1 0 20 70 93 103 107 110 BIOs: 60 1 0 19 72 99 Ut 17 120 28-4 0 1 2; ile 58 | 7/5) 87 92 94 27-9 30 1 2, 10 48 74 85 91 94 28-1 60 1 Me 18 64 82 oF 95 97 a SY one SS i tS SA aS emma](https://iiif.wellcomecollection.org/image/b32171869_0337.jp2/full/800%2C/0/default.jpg)
