Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Using Biosolids for Reclamation and Remediation of Disturbed Soils.
CORP Author Bureau of Land Management, Washington, DC. ;Center for Urban Horticulture, Seattle, WA.;Environmental Protection Agency, Washington, DC.
Publisher 2006
Year Published 2006
Stock Number PB2007-101071
Additional Subjects Biosolids ; Reclamation ; Remediation ; Soils ; Disturbed soils
Library Call Number Additional Info Location Last
NTIS  PB2007-101071 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 05/28/2007
Collation 30p
All municipal wastewater treatment plants produce biosolids which are the stabilized residuals that settle from the water during the various treatment processes. Solids are produced during primary treatment, as heavy suspended solids settle out. In secondary treatment, microbes eat the dissolved and remaining suspended solids; then, being heavier than water, they also settle out in quiet water. In some cases, tertiary treatment can be used to clean the water even further, and a third type of solids is produced - one that normally involves chemical and physical treatment. Following wastewater treatment, the collected solids are treated to stabilize the readily putrecible materials, reduce volume and destroy pathogens. Solids treatments are generally biologically based with microbes using the organic carbon in the solids as an energy source. Material produced as a result of solids treatment is called biosolids. Biosolids are generally about 50% organic at the end of typical anaerobic digestion. All biosolids can be used for their fertilizer value. Total nitrogen (N) in biosolids varies with the treatment process, but generally ranges from 1-6% N. Used in agriculture, they are generally applied at rates sufficient to meet the nitrogen requirements of the crop. Because of the high content of organic matter, biosolids are also good soil conditioners. Biosolids can generally be divided into two categories: high N and low N biosolids.