Sewerage and Sewage Disposal / by Henry Robinson.

Date:
1896
Catalogue details

Licence: Public Domain Mark

Credit: Sewerage and Sewage Disposal / by Henry Robinson. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    be the antiseptic and deodorising agent. It is stated by those interested in this process that it is perfectly easy to electrolyse sea water, and not to get good results, or only to get them partially, unless two or three points connected with this process are borne in mind. One is, that the longer the electrolysis goes on, the larger is the amount of hypochlorite formed, and the greater the concen- tration of the resulting antiseptic ; and further, that the longer the electrolysis goes on, the larger is the amount of time necessary to raise the solution a step higher in antiseptic power. In all the experiments that have been made, i gramme per litre has been the limit of strength which it has been found necessary to work up to, even for dealing with sewage requiring a very strong antiseptic ; and with such a machine as has been referred to, 1000 litres can be raised to a strength of i gramme per litre in one hour with the consump- tion of 1000 amperes at 6 volts. The advocates of this process claim that the cost of producing one gramme per head in 24 hours, which is stated to be sufficient to deodorise and partially disinfect the sewers, would represent i\d. per head per annum, although it may reach 15. per head. The Hermite system has been considered as a plan for conveying this antiseptic into the houses for flushing the closets with it, but it admits of being