CORRESPONDENCE. THE SEWAGE-FARMS OF BERLIN

W FAIRLEY, M PATERSON, E SALKOWSKI, W SOWERBY, H A ROECHLING
1892 Minutes of the Proceedings of the Institution of Civil Engineers  
considered that the Paper would be a Mr. F a i r b . valuable addition to the literature bearing upon the subject of sewage-farming. It could not, he thought, be doubted that the method of treatment adopted at Berlin was the only one from which good results might be expected, taking into consideration the local conditions. The soil in the district was eminently suited for irrigation, and the stream into which the effluent had to be delivered was comparatively small and sluggish. I t had been
more » ... sh. I t had been stated that what has been done at Berlin and Paris should be taken as an example of what should be done with the sewage drawn from the Metropolitan area. If the local conditions were similar, no doubt such a course would be correct ; but the conditions were not similar. Works which a t Berlin could not be expected to be a success, might be eminently suited for the London area. The object of a sanitary engineer in dealing with the sewage question of any town or district was, he assumed, not to produce results equal to any given standard of purity, but by due consideration of how far his work might be assisted, by natural influences, to produce a result suited to the local requirements. To expend money simply to obtain a very pure effluent, when one less pure would meet all requirements, would be waste. The effluent from the Berlin farms should be delivered into the outfall-stream as pure as could be produced, because, owing to the nature and volume of the river, little or no assistance could be expected from natural influences ; but, on the other hand, the effluent from the proposed precipitation works for London would be delivered into a stream of large volume, having the power of oxidizing and purifying to a very high degree. The plan presently being carried out for London was one from which, although the details might be open to criticism, results suited to local requirements might be expected. With proper appliances, chemicals, and skilful management, an effluent could be discharged which would be readily purified and rendered innoeuous by the river itself. Mr. HOBRECIIT, of Berlin, communicated the following statistical Mr. HoLrecht. information as to rain-water pumped on to the farms, and the cost of management,' as officially ascertained :l
doi:10.1680/imotp.1892.20342 fatcat:3vdual73ufbzxbgokoxztv2s2e