Show S SEWAGE ft I 1 Is dig disposed posed of by precipitation and transportation the disposal of the sewage of london is effected by means of two great plants where it is party purified by chemicals and by steamers which carry out to sea the precipitated matter called sludge obtained after chemical treatment of the sewage says the baltimore american the enormous nature of this undertaking is shown by some figures in a recent report by A R bini binale chief engineer to the L london on county council the average amount of sewage reaching the works was nearly gallons during 1895 an increase of a little more than 1 per contover cen cent tover over the quantity of the previous I 1 year the chemicals chem leals employed in purifying the sewage were pounds of lime and pounds of of iron the quantity of sludge that waz was taken from the works was long tons of which weight only about 8 per cent was of solid matter about has been spent in building the chemical plant and the vessels employed in removing the sludge to sea the total expenses including fixed charges and the cost of operating amounted to during 1895 about two thirds of this sum being for operation figuring on the basis of gallons of sewage the total cost of sewage disposal was and tor for operating expenses alone for precipitation the operating expenses expensed were per gallons of towage sewage received six ships were employed iu in taming carrying sludge out to sm sea the average load being 1000 tons the cost of this transportation was 6 cents per aton |