Specification of John Box, Edouard Aubertin, Leopold Boblique, and Hippolyte Leplay : disinfection of sewage, &c.

Date:
1875
Catalogue details

Licence: Public Domain Mark

Credit: Specification of John Box, Edouard Aubertin, Leopold Boblique, and Hippolyte Leplay : disinfection of sewage, &c. Source: Wellcome Collection.

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    Provisional Box, Aubertin, Boblique, Sf Leplaifs Impts. in Disinfecting Sewage, 8fe» Meuniers, No. 4, at Bercy, in the City of Paris, Chemist, do hereby declare the nature of the said Invention for “ Improvements in the Disinfection of Solid and Liquid Matters, such as Night Soil, Sewerage, EITHER TOGETHER OR SEPARATELY, GAS, AND OTHER FOUL WATERS, 9 to be US follows:— ® We employ a soluble alkaline phosphate and a soluble salt of mag¬ nesia and oxide of iron or other form of iron. We employ these agents in different combinations. We prefer phosphate of potash or ferruginous soda prepared by calcination in a reverberatory furnace, the phosphate of iron with the sulphate of soda, and a soluble salt of magnesia such as 10 the chlorure of magnesium, or any other. The method of operating with these products is very simpleThe raw matter as it leaves the reverberatory furnace is washed with the liquids to be disinfected, which lose the sulphuretted hydrogen contained in them in their passage through the raw material, which remains deposited in 15 the state of sulphure of iron. To the water thus deprived of the sul- puretted hydrogen we add the soluble salt of magnesia. Magnesian phosphate of ammonia is immediately formed, which precipitates itself, taking with it the azoted organic matters which are found in the liquids. After a short time the water becomes clear, and may be run into rivers or 20 streams without any inconvenience. i . , , * \ To disinfect the thick matters, such as night soil, we reduce the same products into powder, and we mix them with the thick matter, adding soluble salt of magnesia. We also employ phosphate of lime dissolved in chlorhydric acid, and oxide of iron also dissolved in chlorhydric acid. 25 The cheapest phosphate of lime, such as coprolytes or others, can be employed dissolved in chlorhydric acid. We also take hydrated oxide of iron dissolved in chlorhydric acid. We mix these two solutions with the matter or liquid to be disinfected, and we saturate the excess of acid with the double carbonate of lime or of magnesia. We can saturate with 30 chalk, but in this case we add a certain quantity of soluble salt of magnesia. The deposit of magnesian phosphate of ammonia obtained by the treatment with ferruginous phosphate of soda can be dried in the air and reduced into powder, and is a very powerful manure, con¬ taining not only ammoniacal magnesian phosphate, but also azoted 35 organic matters, which the ammoniacal magnesian phosphate has taken down with it in precipitating itself. It can also be used for the extraction