Read A Survey of New Hampshire Sewage Sludges as Related to Their Suitability for on-Land Disposal (Classic Reprint)

A Survey of New Hampshire Sewage Sludges as Related to Their Suitability for on-Land Disposal (Classic Reprint)

Robert D Harter

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Description:Excerpt from A Survey of New Hampshire Sewage Sludges as Related to Their Suitability for on-Land Disposal On this basis, the sludges have been tentatively classified into low, medium, and high-risk categories as related to'their possible detrimental effects if placed on the land (table Although the concentrations of potentially toxic elements in the low-risk sludges are not of major concern, certain of the elements may be accumulated in the soil. Therefore, care should be exercised that excessive amounts of these sludges are not applied to soils. An average of four to six tons (dry) per acre per year would probably be acceptable. The medium-risk sludges should probably not be applied to land at rates exceeding one or two tons (dry) per acre per year. Until additional information on the fate of heavy metals added to land is available, the high-risk sludges should probably not be added to land. If no other disposal technique is available, -the sludge should be spread very thinly over the land, adding no more than one or two tons (dry) of sludge, to any one area within a ten-year period. As a fertilizer material, none of the sludges would be particularly good. All are low in potassium and usage of the sludges as a fertilizer would, therefore, require additions of this element. Whether additional phosphorus would be required, will depend upon the amount of sludge applied, the amount of phosphorus in the soil, and the phosphorus requirements of the plants to be grown. Whether additional nitrogen needs to be applied is more dependent upon the c/n ratio than on the total nitrogen content of the material. If organic materials have a c/n ratio of greater than 15 or 20 to 1, additional nitrogen may be needed to prevent temporary nitrogen deficiencies in the plants. Sludge from secondary treatment plants using activated sludge and primary plants having an anaerobic digester have a satisfactory c/n ratio. (table 5 However, most of the primary sludges that were not digested had a rather high c/n ratio. Thus, when using these sludges as fertilizer additional nitrogen may be needed. 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.We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with A Survey of New Hampshire Sewage Sludges as Related to Their Suitability for on-Land Disposal (Classic Reprint). To get started finding A Survey of New Hampshire Sewage Sludges as Related to Their Suitability for on-Land Disposal (Classic Reprint), you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.

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Description: Excerpt from A Survey of New Hampshire Sewage Sludges as Related to Their Suitability for on-Land Disposal On this basis, the sludges have been tentatively classified into low, medium, and high-risk categories as related to'their possible detrimental effects if placed on the land (table Although the concentrations of potentially toxic elements in the low-risk sludges are not of major concern, certain of the elements may be accumulated in the soil. Therefore, care should be exercised that excessive amounts of these sludges are not applied to soils. An average of four to six tons (dry) per acre per year would probably be acceptable. The medium-risk sludges should probably not be applied to land at rates exceeding one or two tons (dry) per acre per year. Until additional information on the fate of heavy metals added to land is available, the high-risk sludges should probably not be added to land. If no other disposal technique is available, -the sludge should be spread very thinly over the land, adding no more than one or two tons (dry) of sludge, to any one area within a ten-year period. As a fertilizer material, none of the sludges would be particularly good. All are low in potassium and usage of the sludges as a fertilizer would, therefore, require additions of this element. Whether additional phosphorus would be required, will depend upon the amount of sludge applied, the amount of phosphorus in the soil, and the phosphorus requirements of the plants to be grown. Whether additional nitrogen needs to be applied is more dependent upon the c/n ratio than on the total nitrogen content of the material. If organic materials have a c/n ratio of greater than 15 or 20 to 1, additional nitrogen may be needed to prevent temporary nitrogen deficiencies in the plants. Sludge from secondary treatment plants using activated sludge and primary plants having an anaerobic digester have a satisfactory c/n ratio. (table 5 However, most of the primary sludges that were not digested had a rather high c/n ratio. Thus, when using these sludges as fertilizer additional nitrogen may be needed. 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.We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with A Survey of New Hampshire Sewage Sludges as Related to Their Suitability for on-Land Disposal (Classic Reprint). To get started finding A Survey of New Hampshire Sewage Sludges as Related to Their Suitability for on-Land Disposal (Classic Reprint), you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.

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A Survey of New Hampshire Sewage Sludges as Related to Their Suitability for on-Land Disposal (Classic Reprint)

A Survey of New Hampshire Sewage Sludges as Related to Their Suitability for on-Land Disposal (Classic Reprint)

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