IE20160132A1 - A remediation process - Google Patents
A remediation process Download PDFInfo
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- IE20160132A1 IE20160132A1 IE20160132A IE20160132A IE20160132A1 IE 20160132 A1 IE20160132 A1 IE 20160132A1 IE 20160132 A IE20160132 A IE 20160132A IE 20160132 A IE20160132 A IE 20160132A IE 20160132 A1 IE20160132 A1 IE 20160132A1
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- Ireland
- Prior art keywords
- soil
- bioremediation
- contaminated
- bays
- contaminated soil
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 55
- 230000008569 process Effects 0.000 title claims abstract description 47
- 238000005067 remediation Methods 0.000 title description 2
- 239000002689 soil Substances 0.000 claims abstract description 94
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 39
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 39
- 230000000813 microbial effect Effects 0.000 claims abstract description 37
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims description 31
- 239000002699 waste material Substances 0.000 claims description 27
- 230000029087 digestion Effects 0.000 claims description 24
- 239000004575 stone Substances 0.000 claims description 18
- 102000004190 Enzymes Human genes 0.000 claims description 15
- 108090000790 Enzymes Proteins 0.000 claims description 15
- 239000011942 biocatalyst Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 10
- 235000015097 nutrients Nutrition 0.000 claims description 7
- 239000002736 nonionic surfactant Substances 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 241000193830 Bacillus <bacterium> Species 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 241000589516 Pseudomonas Species 0.000 claims description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- 239000004202 carbamide Substances 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims description 3
- 235000019345 sodium thiosulphate Nutrition 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 16
- 229910052799 carbon Inorganic materials 0.000 description 16
- 239000000463 material Substances 0.000 description 7
- 238000011109 contamination Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 244000025254 Cannabis sativa Species 0.000 description 4
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000035784 germination Effects 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 238000010169 landfilling Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241000282412 Homo Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Mycology (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A process and bioremediation facility for the bioremediation of soil contaminated with a hydrocarbon such as oil in which the process comprises removing the contaminated soil from the contaminated site, placing the contaminated soil in a bioremediation facility having a series of heated bays for receiving the removed contaminated soil and treating the contaminated soil with a microbial cleaner in the heated bays to digest the hydrocarbon and decontaminate the soil in the bays. <Figure 1>
Description
Introduction This invention relates to a remediation process and more particularly to a process for the bioremediation of soils, stone, sands and similar natural materials polluted with hydrocarbons.
Background of the Invention Hydrocarbon soil contamination frequently occurs as a result of accidental spillages.
Such spillages can occur on a domestic or industrial scale while examples of hydrocarbon pollutants include kerosene, diesel, petrol, industrial oils and the like.
Hydrocarbon contamination on soil, stone, sand and the like (generally described as products having European Waste Code 17 O5 04 and hereinafter referred to collectively as soil) can be difficult to treat and known methods suffer from a number of disadvantages. For example, large volumes of hydrocarbon contaminated soil mixed with stone and concrete are sometimes deposited in landfill sites with obvious negative environmental consequences. More particularly, the failure to recycle and re-use contaminated soils in favour of disposal by landfilling gives rise to maximal carbon emissions so that an extremely negative carbon footprint results.
Similarly, negative environmental impacts result from the use of harsh chemicals to treat contaminated soil. In some instances, it is known to remove contaminated soils and treat the removed soils at treatment sites which are long distances from the spillage site resulting in excessive transportation costs with high carbon emissions.
In general, such treatment sites are also energy intensive further increasing energy costs whilst impacting negatively on the carbon footprint of the treatment process. In comparison, recycling on average saves on average 743.2 kg carbon emissions per tonne.
It is also known to use microbe—based bioremediation in the treatment of contaminated soils. For example, US Patent Specification No. 5,364,789 describes the use of a two-part microbial cleaner made up of a biocatalyst solution and a microbe blend activated by the biocatalyst to digest contaminating hydrocarbons in soils. However, in the method of US Patent Specification No. 5,364,789, the microbial cleaner is used in-situ at the site of the contamination which is frequently undesirable or indeed not possible where immediate removal of the contamination is required while use of the microbial cleaner in such an uncontrolled environment results in an unsatisfactorily long treatment time.
Summary of the Invention According to the invention there is provided a process for the bioremediation of soil contaminated with a hydrocarbon comprising: removing the contaminated soil from the contaminated site; placing the contaminated soil in a bioremediation facility, and treating the contaminated soil with a microbial cleaner to digest the hydrocarbon and decontaminate the soil.
Suitably, the contaminated soil is heated prior to treatment with the microbial cleaner to remove moisture from the contaminated soil.
Advantageously, stone is removed from the dried contaminated soil. Suitably, the stone is removed by screening.
Preferably, the contaminated soil is heated during digestion. More preferably, the contaminated soil is heated to a temperature of from about 18°C to about 50°C.
Most preferably, the contaminated soil is heated to a temperature of from about 18°C to about 25°C.
Optimally, the digestion step is performed for a period up to about 30 days. Suitably, the digestion step is performed for a period of from 20 days to 30 days.
Preferably, unsuitable waste (e.g. non European Waste Code 17 O5 04 material) is removed from the contaminated soil before digestion. in a preferred embodiment of the invention, the bioremediation facility comprises a series of bays for receiving the removed contaminated soil. Preferably, the series of bays comprises three bays. More preferably, the bays comprise a heating system.
Most preferably, the walls and floors of the bays comprise a heating system.
Suitably, the heating system comprises an underfloor heating system.
Preferably, each bay is separately heatable.
The invention also extends to the use of a microbial cleaner for the bioremediation of soil contaminated with a hydrocarbon wherein the contaminated soil is removed to a bioremediation facility prior to treatment with the microbial cleaner to digest the hydrocarbon.
Preferably, the microbial cleaner comprises a two—part microbial cleaner made up of a biocatalyst solution and a microbe blend activated by the biocatalyst. More preferably, the microbe blend comprises naturally occurring hydrocarbon digesting microbes. Most preferably, the naturally occurring hydrocarbon ingesting microbes comprise Pseudomonas and Bacillus.
Preferably, the biocatalyst solution comprises nutrients to activate and nourish the microbes. More preferably, the nutrients comprise urea and sodium hexamethaphosphate.
Advantageously, the biocatalyst further comprises a non-ionic surfactant, a chlorine absorbing salt and water. Preferably, the non-ionic surfactant comprises nonylphenol polyethylene glycol. More preferably, the chlorine-absorbing salt comprises sodium thiosulfate.
Preferably, the contaminated soil is heated during digestion. More preferably, the contaminated soil is heated to a temperature from about 18°C to about 25°C and up to 50°C if required.
Optimally, the digestion step is performed for a period up to about 30 days. Suitably, the digestion step is perfonned for a period of from 20 days to 30 days.
The invention also extends to a bioremediation facility for the bioremediation of soil contaminated with a hydrocarbon comprising a series of bays for receiving the removed contaminated soil and treating the contaminated soil with a microbial cleaner to digest the hydrocarbon and decontaminate the soil in the bays.
Preferably, the series of bays comprises three bays. More preferably, the bays comprise a heating system for heating the contaminated soil.
Suitably, the walls and floors of the bays comprise a heating system.
Optimally, the heating system comprises an underfloor heating system.
Preferably, each bay is separately heatable.
The advantages of the invention are many. The bioremediation process of the invention is a fast, cost efficient, environmentally friendly, natural and sustainable way of treating hydrocarbon contaminated soil using a highly efficient bioremediation facility. More particularly, in contradistinction with the landfilling methods of the prior art, contaminated soil can be treated in the bioremediation facility of the invention and then re-used with minimal carbon emissions resulting in a treatment method for contaminated soil having a desirable carbon footprint saving about 743.2 kg per tonne in carbon emissions.
Removal of contaminated soil from the site of a spillage to the bioremediation facility allows for the immediate availability of the site while treatment of the contaminated soil at a bioremediation facility where the contaminated soil can be heated speeds up the digestion and decontamination process whilst eliminating waste streams. In particular, no waste streams or waste by~products are generated by the process and bioremediation facility while the end products include clean, reusable soil and stone which can be used in building and land reclamation or farming projects.
The necessary inputs are minimal as the bioprocess is designed to be self-sustaining (microbes regenerate themselves and are recirculated within the process) and energy efficient.
The process of the invention is cost efficient, both in the short-term and long-term life cycle assessment. The process of the invention also enjoys minimal environmental emissions.
Additional savings are achieved when environmental externalities such as carbon footprint, greenhouse gas emissions and climate change mitigation costs from other processes are considered.
Due to its environmentally friendly profile, the bioremediation facility employed in the process of the invention can be easily established on a local or regional basis providing an easily accessible bioremediation service and reducing the need for long distance transport of material.
The process of the invention safeguards the environment — humans, animals, plants, aquifers etc. in a highly cost—effective and economical manner. Waste is managed without endangering human health or a nuisance through noise or odours In summary, the bioremediation process and facility of the invention facilitate reduced Iandfilling, reduced energy use, reduced transport costs, reduced carbon footprint and the elimination of environmental emissions and waste streams.
Brief Description of the Drawings The invention will now be described, by way of example only, with reference to the accompanying drawings and Example in which: Figure 1 is a schematic representation of the bioremediation process of the invention; Figure 2 is a perspective view from above and front side of the three heated treatment bays adapted for use in the bioremediation process of Figure 1; Figure 3 is a photograph of contaminated soil subjected to heating in the bays of Figure 2 in the absence of the microbial cleaner and sowed with grass seed to indicate the poor degree to which the soil has been bioremediated for re-use; Figure 4 is a photograph of contaminated soil subjected to heating in the bioremediation process of the invention in the presence of the microbial cleaner in the bays of Figure 2 in which the bioremediated soil has been successfully sowed with grass to show the effectiveness of the bioremediation process in producing re- useable soil, and Figure 5 is a graph of the total carbon footprint in Kg of CO2e for different methods of treating one tonne of hydrocarbon contaminated soil including transport compared with the process of the invention.
Detailed Description of the Invention As shown in the drawings, in the bioremediation process 1 of the invention, contaminated soil first arrives 2 at a bioremediation facility in accordance with the invention. Typically, contaminated soil is removed from a spill site and loaded into skips for transportation to the bioremediation facility. On arrival at the facility, the waste is deposited in an inspection area, where all contents are carefully inspected for any materials not suitable for the facility. if any alien material is found, it is stockpiled in an allocated quarantine area 3 and the owner of that waste is notified to collect same for removal to another facility 4.
The remaining suitable waste is accepted for treatment 5.
The accepted waste material is stockpiled in a series of treatment bays 13. The series of treatment bays 13 is made up of a first treatment bay 14 for heavily contaminated waste, a second treatment bay 15 for mildly contaminated waste and a third treatment bay 16 for lightly contaminated waste.
The bays 14,15,16 are allocated the waste in accordance with the contamination level of the waste. The series of bays 13 is generally formed from concrete and each bay 14,15,16 is made up of a floor 17 having a rear wall 18, a first sidewall 19 and a second sidewall 20 upstanding therefrom. The floor 17 and first and second sidewalls 19,20 of each bay are provided with underfloor heating 21 so that each bay 14,15,16 can be heated. The underfloor heating 21 is contained within insulated profile panels 22 in the floor 17 and sidewalls 19,20. The underfloor heating 21 can be made up of heating pipes having a diameter of about 16mm with a wall thickness of 2mm to give a 14mm bore.
The underfloor heating within each bay 14,15,16 is individually controllable as required to allow for independent heating of each bay 14,15,16 for targeted and effective bioremediation within the bays 14,15,16 and to conserve energy as required. Temperature sensors (not shown) are also provided in the bays 14,15,16 to monitor the bay temperatures and to control activation of the heat source/boiler as necessary.
In the present embodiment, the first bay 14 has a width of about 6.7M, the second bay 15 a width of about 6.3M and the third bay 16 a width of about 6.45M. Each bay 14,15,16 has a depth of about 3.2M while the rear wall 18 has a height of about 2M.
Following acceptance of the waste for treatment 5 and allocation of the waste material to the appropriate bays 14,15,16, bioremediation treatment 6 is commenced.
The waste is first heated and dried in the appropriate bays 14,15,16 to remove any moisture. Following drying, the waste is then screened to remove stone from the waste before returning the soil from the waste to the bays 14,15,16 for subjection to digestion.
The removed stone is then washed for re-use. In general, it is not necessary to subject stone to digestion as, not being permeable, the stone does not absorb hydrocarbon contaminants. However, where the stone is permeable, the stone could be subjected to digestion if desired.
More particularly, the waste material within the bays 14,15,16 is sprayed with microbial cleaner in accordance with the invention.
Microbial Cleaner A suitable microbial cleaner is a two—part microbial cleaner made up of a biocatalyst solution and a microbe blend activated by the biocatalyst to ingest contaminating hydrocarbons in soils. As indicated above, a suitable microbial cleaner is described in US Patent Specification No. 5,364,789 and is available under the brand name Oil Away (Trade Mark).
The microbe blend is typically made up of naturally occurring hydrocarbon ingesting microbes such as Pseudomonas and Bacillus. The biocatalyst contains nutrients essential to activate and nourish the microbes. A suitable biocatalyst as described in US Patent Specification No. 5,364,789 is made up of a non-ionic surfactant, a chlorine absorbing salt, nutrients and water. A preferred non-ionic surfactant is nonylphenol polyethylene glycol while a preferred chlorine—absorbing salt is sodium thiosulfate. The preferred nutrients are urea and sodium hexamethaphosphate.
The microbial cleaner is generally mixed by pouring and mixing (by shaking) the biocatalyst and the microbe blend. The microbial blend should be mixed 30 days prior to use for optimal microbial activity.
Weekly additions of microbial cleaner may be made to the bays 14,15,16 as required to control culture levels and microbial activity in the bioremediation process.
During the bioremediation digestion process, the waste within the bays 14,15,16 is generally heated to a temperature from about 18°C to about 25°C via the underfloor heating 21 for optimal microbial activity and digestion of the hydrocarbons.
However, the temperature can be raised to about 50°C when required for more heavily contaminated materials. At these heating levels, digestion and bioremediation of the soil can be completed in under about 30 days i.e. in contradistinction with the processes of the prior art a maximum digestion time of about 30 days is required regardless of the level of soil contamination.
If desired, the temperature and digestion time can be varied as required e.g. a higher digestion temperature may be desirable for petrol contaminants. Similarly, water can be applied intermittently as required during the digestion process.
Following digestion to remove the hydrocarbons from the soil, unsuitable waste (e.g. plastics materials) is removed and quarantined 7 and then removed to another facility 8 for disposal.
The remaining cleaned soil 11 can be re-used as required e.g. in reclaimed land applications such as farms and the like 12.
The process as described above recreates prime conditions for exponential microbial growth and optimal digestion of hydrocarbons.
The bioremediation process of the invention was performed as outlined in the following Examples.
Example 1 A laboratory scaled down version of a bay was employed namely a wooden box measuring 1 metre square by ‘/2 metre deep. The box was filled with a typical mixture of soil and stone (approx 1 tonne) which was badly contaminated with kerosene caused by an escape of oil from a domestic heating system.
The contaminated soil and stone was heated to 25°C on a timer set to two hourly intervals for a period of 28 days.
After the heating process, the weight of soil and stone was reduced to approximately 16 cwt. Following stone removal, the weight was further reduced to approximately 13 cwt. Grass seed was sown in the remaining soil. As shown in Figure 3, germination was poor demonstrating failed bioremediation.
The process was then repeated for a period of approximately 2.5 weeks but this time the soil was treated with the microbial cleaner. Grass was sown as before. As shown in Figure 4, germination was highly successful thus demonstrating effective bioremediation of the soil.
Example 2 197.04 tonnes of hydrocarbon contaminated soil was subjected to the bioremediation process 1 in the treatment facility described above.
More particularly, the contaminated soil was placed in the treatment bays 14,15,16 as appropriate and subjected to treatment with appropriate quantities of microbial cleaner. The contaminated soil with microbial cleaner was then heated to a temperature from about 18°C to about 25°C via the underfloor heating for less than thirty days. All hydrocarbon contaminant was removed and it was calculated that the total CO2e saved was 146.44 tonnes when compared with the equivalent landfill method.
Example 3 The total carbon footprint in Kg of CO2e for different methods of treating one tonne of hydrocarbon contaminated soil including transport was compared with carbon footprint of the process 1 of the invention described above.
As shown in Figure 5, the process of the invention resulted in a significantly reduced carbon footprint when compared with equivalent landfill transport and treatment methods employed in the United Kingdom and Germany. More particularly, the process of the invention resulted in a total carbon footprint of only 39 Kg CO2e when compared with a carbon footprint of 795 Kg CO2e for landfill in the United Kingdom, 828 Kg CO2e for landfill in Germany and 292 Kg CO2e for thermal treatment in the United Kingdom and 325 Kg CO2e for thermal treatment in Germany.
The invention is not limited to the embodiments herein described which may be varied in construction and detail without departing from the scope of the invention.
Claims (34)
1. A process for the bioremediation of soil contaminated with a hydrocarbon comprising: removing the contaminated soil; placing the contaminated soil in a bioremediation facility, and treating the contaminated soil with a microbial cleaner to digest the hydrocarbon and decontaminate the soil.
2. A process as claimed in Claim 1 wherein the contaminated soil is heated prior to treatment with the microbial cleaner to remove moisture from the contaminated soil.
3. A process as claimed in Claim 1 or Claim 2 wherein stone is removed from the dried contaminated soil before treating the contaminated soil with the microbial cleaner.
4. A process as claimed in Claim 3 wherein the stone is removed by screening.
5. A process as claimed in any of Claims 1 to 4 wherein the contaminated soil is heated during digestion of the hydrocarbon.
6. A process as claimed in Claim 5 wherein the contaminated soil is heated to a temperature from about 18°C to about 50°C.
7. A process as claimed in Claim 6 wherein the contaminated soil is heated to a temperature from about 18°C to about 25°C.
8. A process as claimed in any of Claims 1 to 7 wherein the digestion step is performed for a period up to about 30 days.
9. A process as claimed in Claim 8 wherein the digestion step is performed for a period of from 20 days to 30 days.
10. A process as claimed in any of Claims 1 to 9 wherein unsuitable waste is removed from the contaminated soil before digestion.
11. A process as claimed in any of Claims 1 to 10 wherein the bioremediation facility comprises a series of bays for receiving the removed contaminated soil.
12. A process as claimed in Claim 11 wherein the series of bays comprises three bays.
13. A process as claimed in Claim 11 or Claim 12 wherein the bays comprise a heating system.
14. A process as claimed in Claim 13 wherein the walls and floors of the bays comprise a heating system.
15. A process as claimed in Claim 14 wherein the heating system comprises an underfloor heating system.
16. A process as claimed in any of Claims 13 to 15 wherein each bay is separately heatable.
17. Use of a microbial cleaner for the bioremediation of soil contaminated with a hydrocarbon wherein the contaminated soil is removed to a bioremediation facility prior to treatment with the microbial cleaner to digest the hydrocarbon.
18. Use as claimed in Claim 17 wherein the microbial cleaner comprises a Mo- part microbial cleaner made up of a biocatalyst solution and a microbe blend activated by the biocatalyst.
19. Use as claimed in Claim 18 wherein the microbe blend comprises naturally occurring hydrocarbon digesting microbes.
20. Use as claimed in Claim 19 wherein the naturally occurring hydrocarbon ingesting microbes comprise Pseudomonas and Bacillus.
21. Use as claimed in any of Claims 18 to 20 wherein the biocatalyst solution comprises nutrients to activate and nourish the microbes.
22. Use as claimed in Claim 21 wherein the nutrients comprise urea and sodium hexamethaphosphate.
23. Use as claimed in any of Claims 18 to 22 wherein the biocatalyst further comprises a non-ionic surfactant, a chlorine absorbing salt and water.
24. Use as claimed in Claim 23 wherein the non-ionic surfactant comprises nonylphenol polyethylene glycol.
25. Use as claimed in Claim 23 or Claim 24 wherein the chlorine-absorbing salt comprises sodium thiosulfate.
26. A bioremediation facility for the bioremediation of soil contaminated with a hydrocarbon comprising a series of bays for receiving the removed contaminated soil and treating the contaminated soil with a microbial cleaner to digest the hydrocarbon and decontaminate the soil in the bays.
27. A bioremediation facility as claimed in Claim 26 wherein the series of bays comprises three bays.
28. A bioremediation facility as claimed in Claim 26 or Claim 27 wherein the bays comprise a heating system for heating the contaminated soil.
29. A bioremediation facility as claimed in Claim 28 wherein the walls and floors of the bays comprise a heating system.
30. A bioremediation facility as claimed in Claim 29 wherein the heating system comprises an underfloor heating system.
31. A bioremediation facility as claimed in any of Claims 28 to 30 wherein each bay is separately heatable.
32. A process for the bioremediation of soil contaminated with a hydrocarbon substantially as hereinbefore described with reference to the Examples and/or the accompanying drawings.
33. Use of a microbial cleaner for the bioremediation of soil contaminated with a hydrocarbon substantially as hereinbefore described with reference to the Examples and/or the accompanying drawings.
34. A bioremediation facility for the bioremediation of soil contaminated with a hydrocarbon substantially as hereinbefore described with reference to the Examples and/or the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IES20150166 | 2015-05-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IE20160132A1 true IE20160132A1 (en) | 2016-12-28 |
Family
ID=56234351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE20160132A IE20160132A1 (en) | 2015-05-15 | 2016-05-04 | A remediation process |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2538627A (en) |
| IE (1) | IE20160132A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114918247B (en) * | 2022-06-13 | 2023-06-13 | 北京航空航天大学 | Soil pollution treatment method based on electric field and microorganism combined repair technology |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5258303A (en) * | 1991-08-12 | 1993-11-02 | Stenger Raymond C | Bioremediation system and method |
| US5364789A (en) * | 1994-01-14 | 1994-11-15 | Guinn Lloyd J | Microbial cleaner |
| US5427944A (en) * | 1994-05-24 | 1995-06-27 | Lee; Sunggyu | Bioremediation of polycyclic aromatic hydrocarbon-contaminated soil |
| WO2000056669A1 (en) * | 1999-03-24 | 2000-09-28 | Felix Anthony Perriello | Bioremediation of methyl tertiary butyl ether pollutants with butane-utilizing bacteria |
| US6967099B1 (en) * | 1999-11-15 | 2005-11-22 | Geovation Technologies, Inc. | Plant-fiber containing composition for anaerobic bioremediation |
| GB0418296D0 (en) * | 2004-08-17 | 2004-09-15 | Dew Pitchmastic Plc | Compositions for bioremediation |
| EP2067540A1 (en) * | 2007-11-29 | 2009-06-10 | Cleanfield ApS | Underground in situ bioremediation using site-specific microorganisms |
| CN103008336B (en) * | 2012-12-28 | 2014-03-12 | 南京市环境保护科学研究院 | Ex-situ bioremediation method of soil contaminated by organic matters |
| CN105312316A (en) * | 2014-07-28 | 2016-02-10 | 陕西胜慧源信息科技有限公司 | Method for remedying contaminated soil |
-
2016
- 2016-05-04 GB GB1607762.0A patent/GB2538627A/en not_active Withdrawn
- 2016-05-04 IE IE20160132A patent/IE20160132A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB201607762D0 (en) | 2016-06-15 |
| GB2538627A (en) | 2016-11-23 |
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