oa Civil Engineering = Siviele Ingenieurswese - Some aspects of sludge digestion tank design in Southern Africa



A pleasing feature of the Author's paper is that his enthusiasm for high-rate digestion is tempered with due caution. It must be remembered that sludge-digestion is not a simple engineering process but a biological one. Although termed anaerobic the process is fundamentally a method of oxidation of the carbonaceous matter by bacteria which do not use atmospheric oxygen but take their oxygen from decomposition of the water.


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