EISU Seminar Mission to Brazil

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EISU Seminar Mission to Brazil
Environmental Services The UK Perspective
Contaminated Land Remediation
By Tunde Ojo
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The Environmental Market
EISU Seminar Mission to Brazil

• Awareness on environmental issues.
• knowledge of impact of environmental
  pollution/contamination on human health.

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EISU Seminar Mission to Brazil

• The climate change debates
• Encourages governments policy
• The UK government legislation and tax incentives

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Government role in the UK
EISU Seminar Mission to Brazil

• Legislation in place for tax incentives of up to
  150 percent (Finance Act 2001 Schedule 22 and
  Trolleys Property Taxes paras 8.87-8.99).

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The Economic Impact
EISU Seminar Mission to Brazil

• The rapid growth of environmental protection
  policy.
• Enormous global market for environmental
  solutions.
• Worth over 525 billion per annum- 688 billion
  by 2010.

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EISU Seminar Mission to Brazil
Remediation Technologies

• Bioremediation Soil and Groundwater
• Soil/Vapour Extraction/Air Sparging
• Thermal Desorption
• Flocculation
• Soil washing
• Excavation
• Containment

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EISU Seminar Mission to Brazil
SOIL SCREENING
CONTAINMENT
BIOREMEDIATION
AERATED BIOPILE
PUMP AND TREAT
THERMAL TREATMENT
STATIC TREATMENT FACILITY
VAPOUR EXTRACTION
TYPICAL TREATMENT PERIODS
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EISU Seminar Mission to Brazil
Bioremediation

• Intentional use of biodegradation - eliminate
  environmental pollutants in soil/groundwater.
• Technologies - physiological potential of
  micro-organisms - contaminants - non-toxic by
  products.
• Why?
• Complete remediation No residual products,
  toxic by-products/emissions.
• Ease of construction/Operation Low capital
  cost, less intensive/intrusive
• Low OM Cost b/c bio treats the source e.g.
  DNAPL pools/contaminant plume,
  
  regulatory/public acceptance, green
  sustainable, cheap, typically 50 lt soil vapour
  extraction pump Treat technologies.

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EISU Seminar Mission to Brazil

• The need for bioremediation- Focus
• Legal and regulatory implications - risk
  assessment framework.
• UK approach - Contaminated Land Regulations-
  Environmental Protection Act, 1990 (DEFRA 2000).

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EISU Seminar Mission to Brazil

• Three main methods of bioremediation
• Above-ground treatment of solids
• Above-ground treatment of liquids
• in situ treatment of solids, liquids and gases

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EISU Seminar Mission to Brazil
Phases of bioremediation 1) Site
characterization and assessment of
feasibility 2) Management of the remediation
process and 3) Active remediation end-point.
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EISU Seminar Mission to Brazil

• Purpose
• Reduction of the risks
• - Human health.
• - Ecological.
• - Ground and surface water.
• - Building/infrastructure.
• Restoration of the site
• - Aesthetic problems.
• - Preparation for sale.
• - Contractual conditions.
• - Redevelopment residential/industrial/commercia
  l.
• - Facilitate future redevelopment.

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EISU Seminar Mission to Brazil

• Bioremediation Technologies include
• Biostimulation
• Addition- nutrients/electron acceptors oxygen,
  nitrate and
  sulphate.
• Bioaugmentation
• Performance selected or genetically engineered
  strains of microbes are introduced into a site.
• Contaminants
• Aromatic compounds e.g. PAHs, organochlorides
  (biodegrades through 3 diff. pathways as electron
  acceptors, donors or cometabolism), BTEX Benzene,
  Toluene, Ethylene, xylene - LNAPL, DNAPL and
  heavy metals such as mercury .

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LNAPL AND DNAPL

EISU Seminar Mission to Brazil

• LNAPL Light Non-Aqueous Phase Liquid
  sparingly soluble lt dense water e.g. oil
  
• DNAPL Dense Non-Aqueous Phase Liquid e.g. coal
  tar
• Accidental spills and chronic leaks of fuel oil
  or other
• hydrocarbon material (e.g., coal tar) -
  subsurface
• accumulation of nonaqueous phase liquid
  (NAPL)
• subsequent source of contamination in
  groundwater.
• Aqueous solubility is predicted to be the
  controlling influence in the
• partitioning of hydrocarbons from NAPL to
  groundwater.

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Site Type
EISU Seminar Mission to Brazil

• Superfund sites- contaminated via wastes - wood
  preserving, petroleum refining and reuse.
• Former Manufactured Gas Sites.
• Remediated mainly redevelopment land
  residential/commercial less - managing current
  pollution/potential future liability

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EISU Seminar Mission to Brazil
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EISU Seminar Mission to Brazil
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EISU Seminar Mission to Brazil

• Bioremediation Goal
• Degrades organic pollutants -concentrations
  undetectable/below - safe or acceptable by
  regulatory agencies prevent health ecological
  risks.
• E.g. s. 78 (A) of The Environmental Protection
  Act 1995 Remediation - works, operations/steps
  prevent, minimise, remedy/mitigate effects-
  significant harm/any pollution of controlled
  waters/restored affected land/waters to their
  former state.
• Uses
• Destruction of chemicals in soils, groundwater,
  wastewater, sludges, industrial-waste systems,
  and gases.

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La Tunnest Ltd Turning
dreams into realities..
EISU Seminar Mission to Brazil

• Our services
• Contaminated Land Investigation
• Contaminated Land Remediation
• Environmental Research and Development
• Specialist Environmental Consultancy
• Environmental Analysis
• Pollution Control/Management
• Environmental Awareness Service
• (Specialist lectures, seminars and workshops)
  

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Contact Information
EISU Seminar Mission to Ecuador, Peru and Colombia

• Address 34 Hancock Road, Upper Norwood,
• London SE19 3JW, United Kingdom
• Tel/Fax [phone]
• 44 (0)7905644730 (mobile)
• Emailinfo_at_latunnestinc.co.uk
• Web sitehttp//www.latunnestinc.co.uk
• Registered in England Wales 4423287