Specification of Mark French Anderson : treating sewage for manure.

  • Anderson, M. F. (Mark French)
Date:
1870
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Mark French Anderson : treating sewage for manure. Source: Wellcome Collection.

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    Anderson's Improvements in Treating Sewage for Manure. For every one pound of lime used as above directed two pounds of chalk or carbonate of lime should be used. The other alkalis and alka¬ line earths or their carbonates which may also be used instead of lime are too expensive to admit of practical application, so that their use need 5 be no more than alluded to. After agitation of the sewage or water under treatment which has now had added to it both the sulphate of alumina compound and the lime or chalk, the whole liquid should be allowed to settle until the precipitate has fallen to the bottom of the tank or other receptacle, when 10 the clear supernatant liquid may be run off by means of an opening in the tank or other receptacle a short distance above the precipitate which will be lying at the bottom. The precipitate should then be removed and dried so as to fit it for sale as manure. The drying may be effected by heat or by means of the centrifugal machine or 16 by other suitable means. Instead of proceeding as above described the lime or chalk may be added first and the sulphate of alumina afterwards. In describing my process I have entered into an account of the manufacture of the sulphate of alumina compound in order to point out 20 the cheapest way of making it, but to this way of manufacturing sulphate or sesqui-sulpliate of alumina I lay no claim; but I claim the application of sulphate or sesqui-sulphate of alumina, whether prepared in the way before described or in any other suitable way, in conjunction with lime or chalk, to sewage as herein described. 26 In witness whereof, I, the said Mark French Anderson, have hereunto set my hand and seal, this Thirtieth day of May, in the year of our Lord One thousand eight hundred and seventy. M. F. ANDERSON, (l.s.) LONDON:' Printed by George Edward Eyre and William Spottiswoode, Printers to the Queen’s most Excellent Majesty. 1870.
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