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Item Study of Rejuvenating Kitchen Greywater for Horticulture Use(2017-10-09T12:40:01Z) Chethan Ahuja, S; Rajat, Shetty; Nitin, Devendran; Meghana, Kammarin France by L.H. Mouras. 1862-65 more soldiers die from typhoid and cholera than combat in US Civil war. 1866 Medical Officer of the Privy Council (advisers to Queen Victoria) reported that death rates had dropped considerably where the Chadwick report recommendations were followed.1868-70 Frankland’s tests on filtration of sewage through soil and gravel (an extension of land treatment). Nitrification achieved. 1870-90 Many tests in the UK and US on filtration of sewage through various media. 1887 Dib din suggests basis for biological treatment by organisms and describes modern primary and secondary treatment 1890 First true biological filter at Lawrence Experimental Station, Massachusetts State Board of Health, US. 1890-1900 many tests and designs in the UK follow up American work on biological filters.1895 Cameron and Cummins (Exeter) patent septic tank.1898 1st Royal Commission on Sewage Disposal in the UK. 1906 Imhoff tank designed in Germany. 1912 8th Royal Commission on Sewage Disposal defines the 20 mg BOD/liter, 30 mg SS/liter ‘Royal Commission Standard’. 1913 First laboratory experiments on activated sludge by Fowler, Arden and Lockett at University of Manchester, UK. 1916 First full-scale activated sludge plant at Worcester. Large scale tests in the US. First full-scale AS plant in US at Houston, Texas. 1922 Activated sludge plant built at Soelleroed, Denmark.1924 Pilot AS plant in Germany at Essen.1926 Fullscale AS plant at Bellingshausen, Germany.1927 Bessemer brush aeration, Apeldoorn, the Netherlands.1936 denitrification used in Sheffield.1964 Development of basis for consistent nitrification by Downing, Painter and Knowles , WPRL, Stevenage, UK.