The bacterial purification of sewage : being a practical account of the various modern biological methods of purifying sewage / by Sidney Barwise.

  • Barwise, Sidney.
Date:
1901
Catalogue details

Licence: In copyright

Credit: The bacterial purification of sewage : being a practical account of the various modern biological methods of purifying sewage / by Sidney Barwise. Source: Wellcome Collection.

Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.

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    Conclusions of Sewage Commission. trade refuse, such, for example, as are met with at Leeds and Manchester, elfluents which wdll not putrefy, which would be classed as good according to ordinary chemical standards, and which might be discharged into a stream without fear of creating a nuisance. We think, therefore, that there are cases in which the Local Government Board would be justified in modifying, under proper safeguards, the present rule as regards the ap- plication of sewage to land. The following is the classilication which the Commissioners give of the artificial processes referred to: — A. CONTACT BEDS. 1. Closed septic tank and contact beds. 2. Open septic tank and contact beds. 3. Chemical treatment, subsidence tanks, and con- tact beds. 4. Subsidence tanks and contact beds. 5. Contact beds alone. B. ARTIFICIAL FILTERS. 1. Closed septic tank followed by continuous filtra- tion. 2. Open septic tank followed by continuous filtra- tion. 3. Chemical treatment, subsidence tanks, and con- tinuous filtration. 4. Sub=!idence tanks followed by continuous filtra- tion. 5. Continuous filtration alone. As various County Councils have delayed pressing authori- ties in whose districts land is not suitable for the purification of sewage until the Commission had come to some decision on this point, and there is no longer any reason for further delay, it becomes advisable to explain the conditions which are favourable for the adoption of one or other of the ten processes scheduled by the Commission, and in order that the Report shall be of practical |!jvalue, Mr. Story, M. Inst. C.E., has been good enough] to prepare, in consultation with me,
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