. The sanitation of cities. CROSSNESS, LONDON, ENGLANDChemical precipitation sewage treatment plant. CROSSNESS, LONDON, ENGLANDSewage treatment plant chemical precipitation 62 CHAPTER VI THE SEWAGE TREATMENTPROBLEM Disposal of the wastes of human Hfe has, fromthe earhest times, been one of the problems ofcivihzation. As early as the ninth century beforeChrist, the Assyrians constructed a sewer to drainone of the palaces of Nimrod. The Romans, the great engineers of antiquity,devoted much attention to sanitation, in whichthey made steady progress up to the fall of theempire. The Cloaca Maxima,
. The sanitation of cities. CROSSNESS, LONDON, ENGLANDChemical precipitation sewage treatment plant. CROSSNESS, LONDON, ENGLANDSewage treatment plant chemical precipitation 62 CHAPTER VI THE SEWAGE TREATMENTPROBLEM Disposal of the wastes of human Hfe has, fromthe earhest times, been one of the problems ofcivihzation. As early as the ninth century beforeChrist, the Assyrians constructed a sewer to drainone of the palaces of Nimrod. The Romans, the great engineers of antiquity,devoted much attention to sanitation, in whichthey made steady progress up to the fall of theempire. The Cloaca Maxima, or Great Sewer, ofRome, constructed about the seventh century be-fore Christ, is still in use. With the advent of the dark ages, sanitary en-gineering went the way of learning in general, andall that the Romans had learned seems to havebeen forgotten. Great cities grew up in Europe,entirely without provision for the disposal ofwaste matter, and in time inevitably became lit-erally buried in filth. Great plagues broke outagain and again, and swept like devastating fires 63 ^bc Sanitation of Citie
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