SOKCHO, August 29th WORKSHOP ENVIRONMENT ACTIVE WALL PROCESS.
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Transcript of SOKCHO, August 29th WORKSHOP ENVIRONMENT ACTIVE WALL PROCESS.
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SOKCHO, August 29th
WORKSHOP ENVIRONMENTWORKSHOP ENVIRONMENT
ACTIVE WALL PROCESSACTIVE WALL PROCESS
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SOKCHO, August 29th
PERMEABLE AND REACTIVEBARRIERS
J.J. KACHRILLOEnvironmental department
director
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SOKCHO, August 29th
PRINCIPLE
ACTIVE BARRIER
Polluted water Treated
water
ACTIVE BARRIER
WATER TABLE FLOW
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SOKCHO, August 29th
PRINCIPLE SCHEME OF AN ACTIVE BARRIER WITH FILTERING GATES
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SOKCHO, August 29th
SOME REFERENCES
• RETENTION – AUBY 1998. THC, PAH– CLIPPER OIL 2000. THC, PAH– BREST LAGUNE 2001. THC– FRANIERE 2002. Arsenic
• DESTRUCTION– SOLVA CHEMIE 1999. Chlorinated solvents– ZWEVEGEM 2002. Chlorinated solvents
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SOKCHO, August 29th AUBY-CdF : Plan view of barrier
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SOKCHO, August 29th
AN APPLICATION OF KEOPS PROCESS
SOLVA CHEMIE : Plan view
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SOKCHO, August 29th
SOLVA CHEMIEResults after 15 days operation
Dissolved Elements (content in µg/l) Upstream Downstream
Vinyl chloride 3 0,23
Trichloethylene 94 0,46
Cis 1-2 dichlorethylene 199 2
perchlorethylene 25 0,16
1.1.1. trichlorethane 9 0,22
Methylene chloride 0,08
1.1 dichlorethylene 0,67 0,5
trans 1.2 dichlorethylene 0,21
Chloroform 0,39
1.2 dichloropropane 0,12
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SOKCHO, August 29th
CLIPPER OIL (Barcelona-Spain) General plan of the barrier
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SOKCHO, August 29th
BREST LAGUNE : Example of an original conception associating
stabilisation and active containment.
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SOKCHO, August 29th
ZWEVEGEM(Belgium)
KEOPS PROCESSGeneral plan of the
barrier
C a is s o n d r a in a n t ( L = 2 . 8 m , l = 1 .2 m , H = 5 m )
P o r te
D ra in ( L = v o ir d é ta il, l = 0 ,3 m , H = 4 ,5 m )
B a r r iè re
0 5 0
E c h e lle G ra p h iq u e
P u its d 'a lim e n ta t io n d e s p o r te s ( L = 2 . 8 m , l = 1 .2 m , H = s u b s tra tu m )
4 C a is s o n sL o n g u e u r = 1 1 ,2 m
L o n g u e u r = 2 2 m
1 c a is s o nL o n g u e u r = 2 .8 m
L o n g u e u r = 2 1 m
P O R T E N ° 1
1 0 m
6 c a is s o n sL o n g u e u r = 1 6 .8 0 m
1 c a is s o nL o n g u e u r = 2 .8 m
L o n g u e u r = 1 5 m L o n g u e u r = 1 7 m
1 c a is s o nL o n g u e u r = 2 .8 m
1 c a is s o nL o n g u e u r = 2 .8 m
L o n g u e u r = 3 5 m ?
L o n g u e u r = 1 7 .3 m ?
1 0 m
P O R T E N ° 2
1 0 m
P O R T E N ° 3
Underground water table flow
Geological featuresclayey sands from ground level down to 12 mimpervious clay (K<10-9 m/s) at 12 m
Contaminationset of chlorinated solvents up to 1,9 g/l (hot spots)60 mg/l at the gates inlet (gate 3)
Goals of the treatmentTCE < 70 µg/lDCE < 50 µg/lPCE < 40 µg/lCV < 5 µg/l
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SOKCHO, August 29th
ZVEWEGEM Scheme of a filtering gate
BEKAERT PLANT AT ZWEVEGEM
PRINCIPLE OF THE FILTERING GATE
Gate NorthSCHEMA.SB.JJK.01 date : 27.07.01
2.70 m
1.20 m
0.60 m
1.20 m
0.30 m
Post treatment
Treatment
FILTRE CHARBON ACTIF
Pretreatment
SHEET PILES
CONTROL PIPES
FILTRE A SABLEDRAINAGE NETWORKDRAINANTS
4.00 m
SLURRY PANEL
DOWNSTREAM
UPSTREAM
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SOKCHO, August 29th ZVEWEGEM Installing a gate (1). The slurry panel is perpendicular to the sheet piles wall
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SOKCHO, August 29th FRANIERE TAILINGS (Belgium)
works in preparation (pollution by As)
3000 µg/l50 µg/l
400 µg/l
200 µg/l
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SOKCHO, August 29th
Soletanche-Bachy/ETI
• Soletanche-Bachy– Wider range of applications
(chlorinated solvents, cyanides, arsenic, TPH, PAH)
– Deal with clogging due to possibility of easy filter change
– Able to give long-term guaranty if maintenance
– Simple installation possible down to 40 m
– Works without energy
• ETI– Only chlorinated solvents
– Clogging not solved
– Guaranty only 6 months due to problems of clogging
– Difficulties to install if more than 10 m depth
– Cheap reagent but weaker efficiency
– Works without energy
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SOKCHO, August 29th
Conclusion : An innovative, efficient and cost-effective method
• An alternative to complete containment and pump and treat
• A curative and preventative solution to guarantee good groundwater protection
• A cost-effective : 2 to 3 times cheaper than complete containment and works without energy
• Well-suited to major pollution problems where water resources are in danger
• A real site maintenance contract
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SOKCHO, August 29th
ACTIVE WALL PROCESS***
ADVANTAGES AND APPLICATION OF PROCESS FOR KOREA
***• Rehabilitation of former industrial sites.• Increase in value of polluted lands: real estate
development• Guarantee of decontamination in progress in case of
property’s transfer.• Can be easily adapted to Korean law:
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SOKCHO, August 29th
PATENTS
Title Patent dateFrance and n°
Internat Patentdate and n°
Ecosol rechargeable, barrièresouterraine anti-pollution
21/08/91FR 9110486
21/08/925-504156
PolyEcosol. Composition pour laréalisation d’une barrière anti-pollutionpolyvalente et procédé pour réaliser labarrière
27/03/92FR 920373
24/03/935-65375
Nouvelle paroi drainante. Procédé poursa réalisation et élément mis en œuvre.
26/06/96FR 960794
25/02/983-192661
Perfectionnement à la réalisation de laparoi drainante
02/02/00FR 000130
31/01/012001-23711