Long-Term Hydrocarbon Remediation Using Treatment Wetlands
This presentation is the property of its rightful owner.
Sponsored Links
1 / 42

Presented by: Scott Wallace, P.E. [email protected] (612) 802-2329 PowerPoint PPT Presentation


  • 88 Views
  • Uploaded on
  • Presentation posted in: General

Long-Term Hydrocarbon Remediation Using Treatment Wetlands. Presented by: Scott Wallace, P.E. [email protected] (612) 802-2329. References for Industrial Wetland Design. Water Environment Research Foundation (WERF)

Download Presentation

Presented by: Scott Wallace, P.E. [email protected] (612) 802-2329

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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Presented by scott wallace p e scott wallace naturallywallace 612 802 2329

Long-Term Hydrocarbon Remediation Using Treatment Wetlands

Presented by:

Scott Wallace, P.E.

[email protected]

(612) 802-2329


References for industrial wetland design

References for Industrial Wetland Design

  • Water Environment Research Foundation (WERF)

  • Small Scale Constructed Wetland Systems (Wallace & Knight, 2006)

  • Treatment Wetlands 2nd Edition

  • (Kadlec & Wallace, 2009)


Recent industrial wetland examples

Recent Industrial Wetland Examples

  • BP, Casper Wyoming Refinery, USA

  • BP, Lima Ohio, USA

  • ARCO Wellsville New York Refinery USA

  • Williams Pipeline, (Watertown, South Dakota) USA

  • El Paso Energy (El Dorado, Kansas) USA

  • Shell, Scotford I Upgrader, Alberta, Canada

  • Buffalo-Niagara International Airport, USA

  • Heathrow Airport, London UK

  • Edmonton Airport, Alberta, Canada

  • Occidental Petroleum, Cano Limon, Colombia

  • Rosebel Gold Mine, Suriname

  • Sangachal, Azerbaijan


Industries using wetlands

Industries Using Wetlands

  • Oil & Gas (upstream & downstream)

  • Chemical Manufacturing

  • Landfills

  • Mining

  • Food Processing

  • Airports


Types of treatment wetlands

Types of Treatment Wetlands

  • Surface Flow (SF)

  • Horizontal Subsurface Flow (HSSF)

  • Vertical Flow (VF)

  • Sludge Dewatering Reed Beds

  • Intensified Wetlands

    • Aerated (cold climates)

    • fill-and-drain (warm climates)

    • reactive media (ammonia, phosphorus, etc)

    • industrial wastewaters


Surface flow wetlands

Surface Flow Wetlands

Kadlec & Wallace, 2008


Surface flow wetlands1

Surface Flow Wetlands

Champion Paper, Pensacola Florida


Horizontal subsurface flow wetlands

Horizontal Subsurface Flow Wetlands

Wallace & Knight, 2006


Horizontal subsurface flow wetland

Horizontal Subsurface Flow Wetland

Wildflower Meadows: 90-person treatment system


Vertical flow wetland

Vertical Flow Wetland

IWA, 2000


Vertical flow wetland1

Vertical Flow Wetland

Rousillon, France


Sludge dewatering reed bed

Sludge Dewatering Reed Bed

Skovby, Denmark: 8000-person treatment wetland

Kadlec & Wallace, 2008


Main treatment mechanisms

Main Treatment Mechanisms

  • Adsorption of dissolved-phase hydrocarbons

    • Contaminant retention time much greater than hydraulic retention time

  • Microbial degradation of organic compounds

  • Settling of particulate compounds

  • Oxidation and reduction of nitrogen compounds

  • Precipitation of metals

  • Use of intensification methods (aeration and reactive medias to accelerate treatment)


Natural vs mechanical systems

Natural vs. Mechanical Systems

Energy and O&M Needs

LEAST

MOST

Mechanical Treatment Systems

Intensified Wetlands

Natural Systems

Area Requirements

MOST

LEAST


Treatment wetland design basis

Treatment Wetland Design Basis

  • Tanks-in-series, N typically ranges from 3 to 6

  • Value of N is different for reactive chemicals vs. tracers

  • Spatial variability of biodegradation rate represented by P

  • Important for complex organic chemistries (such as produced waters


Climate range of treatment wetlands

Climate Range of Treatment Wetlands

Wellsville, New York

Northern Sahara,

Libya


Casper wyoming

Casper, Wyoming

Casper


Bp casper wyoming refinery

BP – Casper, Wyoming Refinery

  • Operated 1912 to 1991

  • 37,000 m3 of LNAPL recovered to date

  • Extensive smear zone due to river flooding

  • 50 to 100 years to remediate site

  • High mountain west: -35oC


Bp casper wyoming refinery1

BP – Casper Wyoming Refinery


Casper reuse plan

Casper Reuse Plan

HSSF Wetlands

SF Wetlands


Casper pilot wetland system

Casper Pilot Wetland System

  • 4 cells

  • With and without insulating mulch

  • Vertical upward flow

  • With and without aeration

Phytokinetics, Inc.


Casper rate coefficients

Casper Rate Coefficients

kA, m/yr, based on 3 TIS

Wallace & Kadlec, 2005


Full size system from pilot data

Full-Size System from Pilot Data

Wallace & Kadlec, 2005


Casper intensified wetland cell

Casper Intensified Wetland Cell


Wetland aeration system

Wetland Aeration System


Casper system construction

Casper System Construction


Casper benzene data 2004 2006

Casper Benzene Data 2004 - 2006

Benzene effluent at Outfall 001

consistently below detection levels

<0.01 mg/L


Wellsville new york

Wellsville, New York

Wellsville


Wellsville wetland system

Wellsville Wetland System


Wellsville treatment concept

Wellsville Treatment Concept

  • Cascade Aerators (iron oxidation)

  • Sedimentation Pond (iron precipitation and settling)

  • Surface Flow Wetlands (hydrocarbon removal)

  • Vertical Flow Wetlands (pH adjustment)


November 2008 start up

November 2008 Start Up

  • Cold climate design (ice formation)

  • Thermal calculations necessary


Sedimentation pond iron removal

Sedimentation Pond (Iron Removal)


Surface flow wetlands hydrocarbon removal

Surface Flow Wetlands (Hydrocarbon Removal)


Vertical flow wetlands for alkalinity addition

Vertical Flow Wetlands for Alkalinity Addition

Wellsville New York

Wallace et al., 2011


Wellsville new york ph buffering

Wellsville New York pH Buffering


Overall wellsville system

Overall Wellsville System


Conclusions

Conclusions

  • Industrial treatment wetlands are already being used in North America, South America, Europe, Asia and Australia

  • Surface flow, horizontal subsurface flow, vertical flow, and intensified wetlands are all being used by industry

  • Use of wetlands for industrial treatment wetlands is increasing on two major fronts:

    • Range of applications in different industries

    • Construction of wetlands in different geographic regions


Thank you for your time

Thank you for your time

Treatment Wetlands for Industry


  • Login