Specification of William Robert Lake : deodorizing and utilizing sewage.

  • Lake, William Robert.
Date:
1874
Catalogue details

Licence: Public Domain Mark

Credit: Specification of William Robert Lake : deodorizing and utilizing sewage. Source: Wellcome Collection.

    5/6 (page 3)
    Provisional Specification. A.D. 1874.—N° 1415. 3 Lake's Improved Apparatus for Deodorizing and Utilizing Seioage. process I produce a fine manure, and two other valuable products, namely, sulphate of ammonia and a combination of protoxide and sulphide of iron, whilst I destroy the noxious character of the material treated. 5 In the event of the sulphate of iron being insufficient for the purpose an additional quantity may be added through a tube provided for the purpose. The insufficiency of the supply is at once notified by the smell of the escaping vapor, and may also be ascertained by testing the contents of the bottles with litmus paper. When the acid is entirely 10 neutralized more sulphate must be added. Muriatic or carbolic acid may be used as a substitute for the sulphate of iron, but the products are not so valuable. Slacked lime may also be used in the first Woolfs bottle, sulphuric acid in the second and third, and sulphate of iron in the fourth, if so 15 preferred. The product of the first bottle will then be gypsum, and that of the remainder sulphate of ammonia. I prefer however to use sulphate of iron in all the bottles. LONDON: Printed by George Edward Eyre and William Spottiswoode, Printers to the Queen’s most Excellent Majesty. 1874.