thermal soil remediation · 2012. 4. 26. · thermal soil remediation *e coterra pre-treatment...

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The ecoTECH/TS2000-Star Eradicator figure 1 Thermal Soil Remediation Power unit: Diesel-electric 300 kW The Mark VI ecoTECH/Clean Energy ecoPHASER: Gasifying phase conversion reactor Liquid bubble emissions scrubber Vortex venturi system Clean Energy Sonic Standing Wave Oscillating Flame Burner Rotary soil kiln (thermal desorption reactor) Liquid Fuel see types on next page Solid Fuel see types on next page Contaminated Soil Inlet Cleansed Soil Outlet Gaseous Fuel see types on next page

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Page 1: Thermal Soil Remediation · 2012. 4. 26. · Thermal Soil Remediation *e coTERRA pre-treatment planning goes beyond the usual soil sample laboratory testing to determine the nature

The ecoTECH/TS2000-Star Eradicator

figure 1

Thermal Soil Remediation

Power unit: Diesel-electric 300 kW The Mark VI ecoTECH/Clean Energy ecoPHASER: Gasifying phase conversion reactor Liquid bubble emissions scrubber Vortex venturi system Clean Energy Sonic Standing Wave Oscillating Flame Burner Rotary soil kiln (thermal desorption reactor)Liquid Fuel

see typeson next page

Solid Fuelsee types

on next page

ContaminatedSoil Inlet

Cleansed Soil Outlet

Gaseous Fuelsee types

on next pageon next page

Page 2: Thermal Soil Remediation · 2012. 4. 26. · Thermal Soil Remediation *e coTERRA pre-treatment planning goes beyond the usual soil sample laboratory testing to determine the nature

Why use the the Eradicator?

In-situ site soil treatment is the optimum choice for remediation projects. Soil washing, leacheate trapping, aeration and advanced microbial treatments these days work wonderfully well. If there is the ability to

take a slow and measured approach to remediation, these proven methods will suffice, but what if the site has to be cleaned up in a hurry?

Examples of urgent soil remediation needs include storage tank leakage sites, gas filling stations demolished for UST and “kerb-appeal” upgrades (these clients do not wish to lose otherwise ongoing business or regular customers), and closed or end-of-lease oil and gas wells, where remediation is mandated to occur prior to new lease to be issued to a client.

There a two ways to remediate these types of site in a hurry:

1] Excavate the soil and remove it to a processing station for recycling, or to a landfill. This incurs heavy transportation costs, perhaps replacement soil costs and contingent liability in the transportation and landfill “generator risk” categories.

2] “Burn Dirt” in situ. No transportation off site, no risks associated with it and no off-site processing and landfilling costs. All in all a huge saving. The excavation can be progressive, with on-site processing and replacement affording the ability to work on the remediated sections as each sector is certified for use. This is especially useful with larger sites, so the “down time” is reduced substantially.

ecoTERRA is first an environmental company. It was formed with the philosophy of ensuring that processed soils, (especially thermally desorpted soils). are revitalized with living microbial and faunal activity, humus and aeration, after cremation. Depending on the metals present in the soil, a treatment with ecoTECH’s natural hydroxyl apatite and ecoMIX may also be applied. This ultra-responsible approach sets ecoTERRA apart from other thermal treatment operations. We are still very competitive and profitable.

The Eradicator is quick and economical. Economics.......the Eradicator can use solid or liquid waste fuels. The highest cost of treatment today is incurred by the use of fossil fuels in combustion and transportation of soil.

Thermal Soil Remediation

Fueling the Eradicator

Solid Fuels:

± Bagasse± Croppings± Bark• Petroleum Coke± Sawdust• Paper± Forestry Residues• Coal• Lignite• Leonardite• Peat± Tyre chips± Straw± Woodwaste± Manure*± Dried Sewage*

* = With other open fibre materialsLiquid Fuels:

± Waste Oil± Bio-Diesel (from fats, oils & greases)• Diesel• Kerosene• Coal Water Mix (CWM) fine slurries± Bio-oil

Gaseous Fuels:

• Natural Gas• Landfill Gas• Coalbed Methane

± = most economical optional fuels

The most economically viable fuels are also the most beneficial for sustainability and desirability from an ecological viewpoint!

Page 3: Thermal Soil Remediation · 2012. 4. 26. · Thermal Soil Remediation *e coTERRA pre-treatment planning goes beyond the usual soil sample laboratory testing to determine the nature

Page 8

The Gas Filling Station Example

Petrol (gasoline) filling station remediation is a regular occurance in most cities. The problems of inconveniencing the public and the need to get the station remediated and refitted as quickly

as possible drives the requirement for the Eradicator type of service: drive-in, fix the problem and be off the site in the shortest time, whilst ensuring safety and compliance.

In Appendix 1 there is a fully detailed project component and costing analysis of a typical gas station project.

Gas station soil remediation is always undertaken after careful planning of the program, following soil tests to indicate all of the contaminants (not just BTEX) in the soil, so that other pollution of special conditions can be accomodated in the remediation treatment.

Soil make-up after treatment is always carefully addressed.*

VariablesTHAT AFFECT THE ON-SITE THERMAL REMEDIATION of HYDROCARBON CONTAMINANTS IN SOILS.

ecoTERRA is able to provide on-site remediation services for sites contaminated with hydrocarbon contaminants at a total cost comparable to the current dumping fees alone. The

process used has a tested efficiency rate of 98% recovery; cleaning Petroleum contaminated soils to MTC Act Table V Class 2 Levels.

The effectiveness and pricing of this process depends on a number of variables, including (but not limited to):

• Type of contaminants involved• Level of contamination• Amount and depth of soil impacted• Proximity and level of water table or aquifers• Soil type and moisture content• Site layout and conditions• Independent laboratory proximity for testing

Prior to ecoTERRA being able to quote on any specific remediation contract, the client must supply a full, independently prepared, environmental report to ecoTERRA.

This on-site all inclusive remediation service eliminates the need for the excavation of materials by the client, the provision for transporting those materials to a dumpsite (with its inherent liability consequences and ever-increasing costs), and the replacement of the excavated material with “clean” fill. So-called “clean” fill can carry a variety of entrained herbicides, insecticides and very little humic fauna and flora residues to become living, sustainable soils.......ruining the whole point of the program!

Thermal Soil Remediation

*ecoTERRA pre-treatment planning goes beyond the usual soil sample laboratory testing to determine the nature and volume of contaminants. We examine the indigenous matrices of the surrounding area soils, paying particular attention to potentially beneficial microbial and vermiform fauna. Each ecoTERRA site

has a mini “seeding farm” (an adjacent patch of aerated and finely tilled soil) with local worms, bugs and insects to inoculate the roasted soil, which of course is mineral only. Local, mulched flora humus is also added. In cases where the soil is eroded, completely depleted by generations of chemical “additives”, defoliants or pesticides, or damaged so that only the mineral components exist, we make up living soils as close as possible to what should be there.

Page 4: Thermal Soil Remediation · 2012. 4. 26. · Thermal Soil Remediation *e coTERRA pre-treatment planning goes beyond the usual soil sample laboratory testing to determine the nature

Page 9

The panic reaction of the authorities during the BC outbreak resulted in tens of millions of slaughtered birds, (some contaminated, most culled “just in case”), being placed in bags

and buried on, or near, the farms that now breed, feed and farm new generations of the same species that lie rotting, (infected and probably still contageous), beneath the ground around the bird barns.

Unfortunately, there were no Eradicators in the province. An ecoTERRA Eradicator is a mobile, quickly deployed incinerator. Bird carcases, bagged or not, can be fed into the tumble kiln and the residence time adjusted by configuring the rotational (auger effect) speed of the rotary kiln to deliver only ash residue, or bone char, a major source of hydroxyl apatite (see apatite section on heavy metal leachate prevention).

The ecoTERRA Eradicator offers the following advantages for crisis control:

◙ Immediate mobilization to site

◙ Set up in 3-4 hours

◙ Can run continuously until threat eradicated

◙ Absolute pathogen kill

◙ Kiln dwell (thermal residence time) adjustable

◙ 1 metre inlet throat fits all birds

◙ Exhaust scrubbing can include disinfectant

◙ ecoFRESH wash (hose down) on board

◙ Can be moved warm to next site.

The unique interior auger design of the rotary kiln allows for rotation speed control of combustion dwell time to ensure carcase burn-out and pathogen kill. The on-board diesel power unit has a high pressure water pump for disinfectant and ecoFRESH spray-down, when leaving the contamination site. ecoFRESH microbes kill pathogens and mosquito eggs,

Avian Flu and other contageousanimal waste problems

What is avian influenza?

Avian influenza (AI) is a contagious viral infection caused by the influenza virus Type “A”, which can affect several species of food producing birds (chickens, turkeys, quails, guinea fowl, etc.), as well as pet birds and wild birds.

In May 2004, the provincial government of British Columbia signed an emergency order giving it the power to dump infected bird carcasses in several landfills. Since February that year, a highly

infectious strain of avian flu had struck 29 commercial poultry farms in the Fraser Valley east of Vancouver, as well as 10 so-called backyard chicken flocks. The disease, which can kill a flock in days, jumped from farm to farm despite efforts to contain it in the original five-kilometer-wide “hot zone.”

The Canadian Food Inspection Agency implemented a massive cull of the 19-million poultry flock in the Fraser Valley’s 700 commercial farms. Even pets and aviary birds were slaughtered. It was a poorly organized, badly exercised testimony to lack of disaster planning. Greater Vancouver’s largest landfill at Cache Creek refused to dispose of the carcases. Vancouver Island banned transportation of bird or bird products from the Lower Mainland.

Other Thermal Remediation