Sewage treatment results in wastewater being recycled to the environment, but the solids removed from wastewater can also be processed and turned into a nutrient rich fertilizer. Today's primary use of this fertilizer is to restore overworked agricultural soils, but research by the USDA and the USEPA/ERT has now opened the way for use of biosolids to reclaim lands destroyed by mining. Biosolids, prepared in site-specific mixtures, are used as soil amendments and slow release fertilizers which bind the contaminating metals and jump-sta ...  [click for more]