techniques to "clean" soil contaminated with diesel fuel
techniques to "clean" soil contaminated with diesel fuel
(OP)
Could anyone suggest the techniques to remediate soil which has been contaminated with diesel fuel ? Any chemical mixes which can be added to "neutralize" or remove the fuel from the soil. Bioremediation techniques ? If aeration/exposing to open air and turning it over a couple of times, how long will it take to actually clean this soil.... months or years? The soil is relatively granular, and consisting of reddish brown shale particles.
Thanks for info
Thanks for info





RE: techniques to "clean" soil contaminated with diesel fuel
RE: techniques to "clean" soil contaminated with diesel fuel
RE: techniques to "clean" soil contaminated with diesel fuel
If there is a pathway from the contaminated soil down to an aquifer, and that aquifer is used by someone or contributes to the flow of a river then the soil will probably need cleaning.
Bio-remediation of diesel is possible and can be encouraged by injecting food for the micobes, maybe controlling temperature and ensuring aerobic/anaerobic conditions (depending upon the needs of the microbial colony). As a rough time-guide a cube of soil 20m x 20m x 20m contaminated by DISSOLVED phase diesel might be bioremediated in 6 months (with food and oxygen added). If FREE PHASE diesel is still present then much more time would be required (x2, x3 or more depending upon the amount of liquid diesel present).
In situ cleaning of the soil could be done by air-sparging and soil vapour extraction (SVE). Air is pumped down via input boreholes and a vacuum is applied to other output boreholes. The idea is that the vapour phase of the (volatile) diesel flows from the areas around the inputs and on towards the outputs where it is removed, which either allows more free-phase diesel to evaporate or dissolved diesel to come out of solution.
Ex-situ remediaiton would involve removing the contaminated soil and having it either landfilled (very expensive), soil washed (expensive) or treated off-site. Uncontaminated soil could be purchased and brought to the site if time is at a premium.
I hope this all makes sense, feel free to let me know if you need clarification or further information.
Adam Beresford-Browne, Hydrogeologist, URS Dames & Moore (Dublin)
RE: techniques to "clean" soil contaminated with diesel fuel
RE: techniques to "clean" soil contaminated with diesel fuel
a proposed hotel is going to be built in a sloped surface(hill) so my task is to examine the problems that may occur to this situation..
any ideas please??
i would really appreciate it
thanks in advance
RE: techniques to "clean" soil contaminated with diesel fuel
RE: techniques to "clean" soil contaminated with diesel fuel
From the pace of your message it seems that time is of the essence here and you have to act quickly. I suggest you subcontract the job to an environmental consultancy and get them to arrange for the removal of the offending soil and UST. There may be a local treatment facility available or you may have to have it shipped abroad. To give you an idea, local treatment costs around IRĀ£100/tonne in Ireland.
In situ bioremediation (Micro Blaze) would not seem to be an option for you unless you can convince your general that you need 3-6 months before you can continue working (how much contaminated soil is there? a few cubic metres? a few hundred?).
URS Dames & Moore have offices in Shanghai, Jakarta, Singapore and Manila. One of these offices may be able to offer some more appropriate advice.
I wish you good luck with this.
Adam B-Browne
URS Dames & Moore, Dublin, Ireland.
+353 1475 4422
RE: techniques to "clean" soil contaminated with diesel fuel
RE: techniques to "clean" soil contaminated with diesel fuel
Ganbatte!
RE: techniques to "clean" soil contaminated with diesel fuel
Contact Dick Kersey at Orenda Technologies - 800-322-1648. Good guy and knows his stuff.
Dave Orlebeke/Aquatic Technologies
RE: techniques to "clean" soil contaminated with diesel fuel
KRS Services
www.krs-services.com
RE: techniques to "clean" soil contaminated with diesel fuel
RE: techniques to "clean" soil contaminated with diesel fuel
Sorry if I am being pedantic but I thought it worth pointing out.
As I said before, in-situ remediation is but one of many solutions to the problem of dealing with contaminated soil. I am focussing on larger cases of contamination here, with free-phase product in the ground. If groundwater is shallow and there are free-phase hydrocarbons floating on the water table then you can be sure that hydrocarbons are dissolving into the aquifer and treating the soil will only remove part of the problem. Bear in mind that contaminated groundwater can contaminate clean soils - digging out filthy soil and replacing it with clean will only work if the groundwater doesn't then return to it's level and bring more contamination with it.
Respectfully yours,
Adam Beresford-Browne
Hydrogeologist
URS Corporation Ltd, Cardiff, UK