1 / 11

Environmental Bio-Systems, Inc.

HEXAVALENT CHROMIUM REMEDIATION. Environmental Bio-Systems, Inc. Jim Jacobs, RG, REA, CHG. Movie: Erin Brockovich Contaminant: Cr(VI) Site: PG&E Hinkley, California facility. HOLLYWOOD & Cr(VI). TREATING Cr(VI): SOIL & GROUNDWATER. Isolation Immobilization Toxicity Reduction

china
Download Presentation

Environmental Bio-Systems, Inc.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. HEXAVALENT CHROMIUM REMEDIATION Environmental Bio-Systems, Inc. Jim Jacobs, RG, REA, CHG Environmental Bio-Systems, Inc.

  2. Movie: Erin Brockovich Contaminant: Cr(VI) Site: PG&E Hinkley, California facility HOLLYWOOD & Cr(VI) Environmental Bio-Systems, Inc.

  3. TREATING Cr(VI): SOIL & GROUNDWATER • Isolation • Immobilization • Toxicity Reduction • Physical Separation • Extraction • (U.S. EPA, 2000) Environmental Bio-Systems, Inc.

  4. Metals Stabilization using Sulfide –Based Treatment • SULFIDES: Arsenic, lead, copper, zinc, cadmium, molybdenum, uranium • HYDROXIDE: CrVI reduces to CrIII then precipitates as chromium hydroxide. • OTHER: Cyanide forms thiocyanate, then treated with lime or biotreated. Environmental Bio-Systems, Inc.

  5. Case Study – Windsor, California23 miles NE of Santa Rosa Environmental Bio-Systems, Inc.

  6. Case Study – Windsor, CaliforniaData courtesy of Rick Thomasser and Jim RouseMontgomery Watson Harza Metals Stabilization with Calcium Polysulfide: 114 ports, 20 ft. centers, 1 event Environmental Bio-Systems, Inc.

  7. Delivery Method Injecting reductant using a direct push technology (DPT) probe rig. Site: Northern California Environmental Bio-Systems, Inc.

  8. Case Study – Windsor, California Major reduction of CrVI over a period of 1.5 yrs. CrVI reduced to CrIII then precipitated as Chromium Hydroxide (Data: Montgomery-Watson-Harza, 2001) Environmental Bio-Systems, Inc.

  9. Case Study – Windsor, California - Details • Contaminants: Cr (VI) • Low permeability aquifer • 114 injection ports • Spacing of RIP probes: 20 foot centers • Treatment event: about 2 weeks • Site: over 1 acre • Number of events: 1 Environmental Bio-Systems, Inc.

  10. Case Study – Windsor, CaliforniaData courtesy of Rick Thomasser and Jim RouseMontgomery Watson Harza Environmental Bio-Systems, Inc.

  11. Environmental Bio-Systems, Inc.www.EBSinfo.com QUESTIONS…. James A. Jacobs, RG, REA, CHG Tel: 415-381-5195 Fax: 415-381-5816 Email:augerpro@sbcglobal.net Environmental Bio-Systems, Inc.

More Related