Patent ID: 7445717
Filing Date: 2008-11-04
Classification: B09C,C02F,Y10S

Abstract:
1. A method for converting a waste stream resultant from manufacturing explosives, said waste stream containing at least some suspended and colloidal solids, to environmentally benign products, said method comprising: providing at least one zero valent metal column reactor comprising a pre-filter in a lower portion of said column reactor and a reducing portion in an upper portion of said column reactor, said reducing portion contiguous with said pre-filter; physically filtering out at least some of said solids in said pre-filter; establishing a reducing environment in said reducing portion for removing oxygen using at least one zero-valent metal as a reducing agent, wherein at least some of said zero-valent metal is provided as a metal ion, and wherein the output of said physical filtering and reducing environment is a first treated waste stream; subjecting said first treated waste stream to a Fenton oxidation reaction in at least one first vessel; monitoring and controlling at least the amount of oxidizer available to said Fenton oxidation reaction, wherein the output of said Fenton oxidation reaction is a second treated waste stream; neutralizing the pH of said second treated waste stream in at least one second vessel, wherein said neutralizing completes said converting of said waste stream to said environmentally benign products; settling any remaining solids in said environmentally benign products in at least one said second vessel to precipitate as sludge; and reclaiming at least part of one constituent of said environmentally benign products.