Lanterna Rally

Author: Myron Sallee Anderson

Publisher: Forgotten Books

Published: 2018-01-08

Total Pages: 34

ISBN-13: 9780428613822

Excerpt from Sewage Sludge for Soil Improvement Public sentiment is today strongly in favor of cleaner streams than now prevail. It is thus essential that more of the organic constituents present in raw sewage be removed in processing plants serving our centers of population. A few of the disposal systems in operation recover a large part of the plant nutrients, except potassium, present in raw sewage. Sludges of high quality recovered after heating often are used directly as fertilizers. The sludge output of a large number of disposal plants is of low grade as fertilizer but has some value when applied to land in the. Manner that farm manure is used. The better grades of sludge are often sold to defray a part of the expenses of operating a plant. The poorer quality materials that have lost a large part of the nutrients originally present may be given to users or sold for a very small price. As these low-quality sludges are being proc essed. Sizable quantities of organic matter are lost in the form of gases, and plant nutrients are carried off in drainage water. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.