Transcriber’s Note:
The cover image was created by the transcriber and is placed in the public domain.
COMPARISON OF METHODS
OF
SEWAGE PURIFICATION
THIS IS TO CERTIFY THAT THE THESIS PREPARED UNDER MY SUPERVISION BYTheodore Clifford Phillips and Edward John SchneiderENTITLED Comparison of Methods of Sewage PurificationIS APPROVED BY ME AS FULFILLING THIS PART OF THE REQUIREMENTS FOR THE DEGREEOF Bachelor of Science in Municipal and Sanitary Engineering.
Contents
Comparison of Methods of Sewage Purification.
The disposal of sewage is one ofthe most important problems thatconfront the municipal and sanitaryengineer to-day.
The study of this subject datesback to 1844 when the Healths ofTowns Commission of Londonmade the report which first showedthe real course of the rapid increasein the death rate of the larger cities.In this country practically nothingwas done until 1872 when theMassachusetts Legislature instructedthe State Board of Health toinvestigate and report on thesubjects of sewerage, sewage disposal,and the pollution of streams,and to-day Massachusetts2leads in the investigation of thebest methods of sewage disposal.
Six different methods for thetreatment of sewage are now in use.These methods are