Sewage Disposal

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Excerpt from Sewage Disposal: Ten Years' Experience Now Fourteen Years, In Works of Intermittent Downward Filtration, Separately and in Combination With Surface Irrigation, With Notes on the Practice and Results of Sewage FarmingWe have also alluded to a novel system Of sewage treatment which was first proposed in the Rivers Pollution Commissioners' Report of 1870 on the Mersey and Ribble basins. This system consisted simply in making the filtration through porous land the principal instead of an incidental process Of sewage treatment.In the course Of investigations on various modes of sewage disposal it seems to have attracted the attention of Dr. Frankland (to whom the new process is ascribed) that in some cases where such filtration naturally Occurred the result was to purify the sewage in a remarkable degree - in fact, that what were known as pure streams were often only derived from sewage filtered in this manner. Hence it occurred to him to try whether a plan might not be devised by which this desirable result could be brought about at will. With this view he instituted a series of experiments, and established the fact that by passing sewage through a suitably porous soil, not constantly but intermittently, a high degree of purification could be ensured, the Object of the intermittence being to aerate the filter and so give an opportunity for the purifying action of the oxygen. It is explained that a filter so used is not a mere mechanical contrivance, but a chemical apparatus for oxidising and thus altogether transforming, as well as for separating, the filth of dirty water.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.