Patent ID: 8497406

Claim:
A process for destruction of organic contaminants in dredged material for the formulation of a beneficial end product wherein the process is sequentially set forth: (a) sorting out particles greater than ¼ inch in size; (b) diluting the remaining material with water; (c) separating out sand, gravel and non-contaminated organic matter; (d) adding a reductive agent to the remaining material; (e) separating out particles from the remaining material such that about 10% of the dredged material remains; (f) adding an oxidizing agent to the remaining material from step (e); (g) adjusting the dwell time and amount of oxidizing agent added on the basis of total organic carbon (TOC) and chemical oxygen demand (COD) to the remaining material; (h) separating out particles 60 microns or less from the remaining material; (i) adding a reducing agent to the remaining material; (j) adding an oxidizing agent to particles 60 microns or less in size in the remaining material; (k) adjusting the pH in the remaining material; (l) separating out particles 60 microns or less in size from the remaining material; (m) adding a reducing agent to the particles from step (l) and dewatering; (n) separating the remaining material into: (1) filtrate; and (2) filter cake, wherein said filtrate is recycled to the above process.