In-situ and on Site Remediation of Soil and Groundwater ... · ENVIRONMENTAL TECHNOLOGY - BR ANCHES...

INTERGEO ENVIRONMENTAL TECHNOLOGY - BRANCHES WORLDWIDE

Brazil

VenezuelaPanama

EUROPE

IG IG

IG

IG IG

IG

IG

IG

IG

Argent ina S . Africa

Algeria

Mala ysia

Taiwan

S. Corea

Moncalieri

LondonLuxemburgParis

SargansMilan

SALZBURG

Vienna

Zagreb THESSALONIKI

Athens Limassol

Istanbul

Sofia

Bucarest

Budapest

Bratislava

Prague

Wroclaw

AugsburgDresden/Radenberg

Berlin

Suhl

INTERGEO Greece – Offices in Thessaloniki

• Has been founded in 1987

• Over 10.000 investigation projects

• Over 3.000 soil and groundwater remediation projects

Headquarters in Salzburg

INTERGEO General Profile

Prague Offices Budapest Offices Radeberg Offices Vienna Offices

Augsburg Offices Suhl Offices Thessaloniki Offices

Region of intervention of Municipality of Evosmos

Location points of the industrial units and of disposed waste and garbage within the investigation area

INTERGEOEnvironmental Technology

industr.cdr

Mea

ndro

u st

reet

Smir

nis s

tree

t

Olim

piad

os st

reet

Surface~ 500.000 m2

Industrialunit

Uncontroldisposalof wasteand garbage

Future uses of the ground uses of the area of intervention

0 42m 84m

INTERGEOEnvironmental Technology fut-map.cdr

LEGEND

Schools

Politicalactivities

Social institutions

Athletic Installations

ιM

aian

drou

St.

Smirn

isSt

.

Olim

piad

osSt

.

Places of investigation boreholes and monitoring wells that have been executed in the field of research

Mea

ndro

uS

t.

Sm

yrni

sS

t. Oly

mpi

ados

St.

Ring road

0 50 100

B

CDE

G FH

I

A

Area JPosition of monitoring well

Position of sampling

Lith

olog

ical

Des

crip

tion

Dri

lling

Dep

th (m

)

Lith

olog

y

Thi

ckne

ss (m

)

Col

our

Soil

Sam

ple

Soil

Gas

Sam

ple

Wat

er S

ampl

e

Soil

Ana

lysi

s TPH

in

mg/

kg

Soil

Gas

Ana

lysi

s in

mg/

m3

Wat

er a

naly

sis T

PH in

m

g/l

Gro

undw

ater

leve

l

Rem

arks

Dri

lling

Dia

met

er (m

m)

0,00concrete 0,2 32

clay 5283sand 1,00 1,4gravel

smell of Aliph. product

5150 2552,00 Arom.

48sandgravel 1,4 light

brown 42503,00

3200 smell of product

4,00

clay lightsand 3,0 browngravel

5,00

850

6,00

7,00

clay 8,00 4,0

9,00 889

10,00

Drill-log

Borehole Nr7

Cross section in the research area according the boreholes data and the information from the relative bibliography

South North

ιι

020

100

140

ΥΓ5ΥΓ2

KAR1 DIZ1 MAN1+40

6080

120

+20

40Green-schistred

clay

Piezometric surfaceof the groundwater

clay,sandand gravel

Territorial areaΥΓ4

Depth bellow the surface in meters

INTERGEOEnvironmental Technologyg206crgr.cdr

Distribution of the concentration of total hydrocarbons in the soil in the area of research in three different levels

bellow the surface of the ground

0

1

2

3

4

5

6

7

8

9

10

ÂÜèï

ò óå m

êÜô

ù á

ðü ô

çí åð

éöÜí

åéá

Relation of the concentration of total hydrocarbons (TPH) with the sampling depth in the investigation borehole 19 in

the research area in Evosmos

Distribution of the concentration of total hydrocarbons (TPH) in the groundwater in the area of research of

Evosmos

Soil vapor extraction system

activated carbon filter vacuum pump water separator

perforatedtube

soil

SVE-well

contaminated soil

Remediation system of the unsaturated zone with the bioventing system

activated carbon filter vacuum pumpwater separator

perforatedtube

Air infiltrationwell

Soil vapor extraction borehole

contaminated soil

groundwater

Soil vapor extraction borehole

Affected ray of the recovery wells that were achieved during the pilot test

4710m 20m 30m 40m

43

ΓΠ1

ΓΠ2

ΓΑ-2

ΓΠ3

ΓΠ7

ΓΑ-1

ΓΑ-3

ΓΠ5

ΓΠ4

ΓΠ6

10m

20m

30m

40m

Soil vapor well

Monitoringwell

Remediationsystem

GROUND PLAN

SECTION30

m

6 m

screensof diameter 2 "

Soil vapor extraction

Screensof diameter 2 "

Impervious bottom from PVC

impervious cap from PVC

Contaminated soil

contaminatedsoil

1,5

m

30 m

INTERGEOEnvironmental Technologysveonsi2.cdr Soil vapor extraction

Schematic representation of the pollution of the contaminated ground with the “on site” method


Contaminated soilWith hydrocarbonsthat needs remediation

A BC

DE

FGH

Mai

andr

ouSt

.

Smirn

isSt

.

Oly

mpi

ados

St.

I

12

3

45

6

j10

Soil vapor extraction

Absorption drillingof underground air andvapor of the underground

Deposition areaof contaminated soilfrom the areas H, G F and Α for "on site “remediation

Suggestion of remediation for the contaminated soil with hydrocarbons with “In situ” and “On site” methods

On site Soil Venting

In situ Soil Vapor Extraction

CASE STUDY DESCRIPTION

SITE FEATURES (1)

1. Location : Island in Aegean Sea with limited water resources2. Site Operation : Depot terminal of power plant3. Source : Leakage of underground oil product conveyance

pipeline 4. Amount of released product : 1,5 m3 Diesel5. Geology : Till 15-20 m unconsolidated permeable sediments

(sand, gravel, silty sand)6. Bedrock : granodiorit7. Piezometric groundwater level : ~ 3 m b.s.l

Condition of the wells : 2,1 mg/l TPH

CASE STUDY DESCRIPTION

SITE FEATURES (2)

8. Hydr. Conductivity of aquifer : 3-8 X 10-5 m/s (permeable)

9. Condition of the aquifer : Unconfined

10. Mean hydraulic gradient : 1-3 %

11. Drinking water : Water wells located in 120 m distance (supply for 2000 people)

12. Environmental Risk : Very high

13. Amount of released product : 1,5 m3 Diesel

14.Groundwater impact in the drinking wells : 2,1 mg/l TPH concentration after 15 days of the incident

Case study Groundwater flow conditionsCase study Groundwater flow conditions

Case study Groundwater flow dynamic conditions 3DCase study Groundwater flow dynamic conditions 3D

Case study Geological cross-section along the groundwater flow direction

Case study Geological cross-section along the groundwater flow direction

Case study Site investigationCase study Site investigation

Case study TPH in the groundwaterCase study TPH in the groundwater

Case study Remediation Action PlanCase study Remediation Action Plan

Case study Location of the remediation systemsCase study Location of the remediation systems

Case study O2 content in the groundwater before remediationCase study O2 content in the groundwater before remediation

Case study O2 content in groundwater shortly after the startCase study O2 content in groundwater shortly after the start

Case study O2 content in groundwater after completionCase study O2 content in groundwater after completion

Case study Soil Vapor Extraction ProgressCase study Soil Vapor Extraction Progress

Case study Water quality in the drinking wellCase study Water quality in the drinking well

REMEDIATION RESULTS

•The soil remediation (source) was completed after 20 months implementation of the airspargingtechnology

•The groundwater TPH concentration was radically reduced below the drinking water standards after 16 months of system operation

Location of investigation drillings and groundwater monitoring wells at the depot terminal

investigation drillings

groundwater monitoringwells


N

BH1

BH2

BH3

BH4

BH5

BH6

BH7 BH8

BH9

BH10

BH11

BH12 BH13

BH14

BH15

BH16BH17

BH18

BH19

wastewater

treatment

office

Drill-log from borehole BH9 in the depot terminal

Lith

olog

ical

Des

crip

tion

Dri

lling

Dep

th (m

)

Lith

olog

yT

hick

ness

Col

our

Soil

Sam

ple

Soil

Gas

Sam

ple

Wat

er S

ampl

e

Soil

Ana

lysis

TPH

in m

g/kg

Soil

Gas

Ana

lysis

in m

g/m

3

Wat

er a

naly

sis T

PH in

mg/

l

Gro

undw

ater

leve

l

Rem

arks

Dri

lling

Dia

met

er (m

m)

0,00 *carriedsand & gravel 0,2 materials 52

claysand 0,8gravel strong smell

1,00 black 6850 Aliph. of product2391 free

clay 0,4 Arom. phase895 of 1,57m

sand 1,0 product piezometric2,00 60 cm level

6731 strong smellof product

: sample

Simplified geological cross section at the depot terminal

Distribution of TPH concentration in the soil of the vadose and of the saturated zone

Distribution of volatile hydrocarbon concentration in the soil-gas at the depot terminal

N

BH1

BH2

BH3

BH4

BH5

BH6

BH7 BH8

BH9

BH10

BH11

BH12 BH13

BH14

BH15

BH16BH17

BH18

BH19

wastewater

treatment

office

Volatile hydrocarbons

in mg/m3

0

100

500

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000



N

BH1

BH2

BH3

BH4

BH5

BH6

BH7 BH8

BH9

BH10

BH11

BH12 BH13

BH14

BH15

BH16BH17

BH18

BH19

wastewater

treatment

office

Depth to groundwater

in m below surface

0.50

0.60

0.70

0.80

0.90

1.00

1.10

1.20

1.30

1.40

1.50

1.60

1.70

1.80

1.90

2.00

Depth to the groundwater at the site of the depot terminal

Estimated extent of floating free product on groundwater at the depot terminal (May ’98-Nov ’98)

Distribution of TPH concentration in groundwater & estimated extent of floating free product on groundwater table

N

BH1

BH2

BH3

BH4

BH5

BH6

BH7 BH8

BH9

BH10

BH11

BH12 BH13

BH14

BH15

BH16BH17

BH18

BH19

wastewater

treatment

office

TPHin mg/l

015101520253035404550556065707580

thick layer > 50 cmof free productfloating on groundwater

thin layer (< 1 cm)of free productfloating on groundwater


Concept of the proposed decontamination technique for the subsurface in the installationof BP in Corfu


Soil vapor ExtractionUnit 21

Oil separator for the recovered

oil product To underground disposal of the pumped groundwater

Skimmer

Submersiblegroundwater pump

Contaminated soil-zone

Soil vapor ExtractionUnit 1

SVE5 SVE4 SVE2 SVE1Rw1

Soi Vapor Recoverywell

SVE1 : Rw1 : Groundwater Abstractionwell + Oil Product recovery well

Floating free phase of oil product

Initial concept of the proposed decontamination technique for the subsurface in the installation

Oil separator for the recovered

oil product

To disposal or further treatment (if necessary) of the pumped water

Contaminated soil-zone

Rw

Floating free phase of oil product

To Oil product holding tank

Air liquid separator

Activated carbon for soil-gas treatment

Slurp tube

Air flow - Bioventing

Bioslurping technique for the subsurface in the installation

Applied soil and groundwater Decontamination measures at Depot terminal

N

wastewater

treatment

office

investigation drillings

groundwater monitoringwells and Bioslurper wells

Bioventing unit (blower)

Bioventing well

connectingpipelines

U1

U2U3

U4

Oil product recovery wellswith skimming systems

RW1

RW2

RW3

RW4

Bioslurper wells

Decontamination measures in the Depot Terminal

For the unsaturated soil:Implementation of the in situ method of

“Bioventing” in 4 areas within the installationFor the groundwater:1) Installation of Skimming system for free

product recovery [at least four (4) recovery wells]

2) Implementation of Bioslurping technique in 5 monitoring wells

Progress of soil decontamination procedureOperation time of SVE unit 1: 25/7/1999-19/7/2000

at the Depot terminal

0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360Operation time in days

1

10

100

1000

10000

Hyd

roca

rbon

con

cent

ratio

n in

mg/

m3

g312sg1.grf

0501001502002503003504004505005506006507007508008509009501000

Tota

l am

ount

of e

limin

ated

hyd

roca

rbon

s in

Kg


goal concentration in the soil-gas

25/07/199904/08/1999

12/08/1999

20/08/1999

27/08/1999

03/09/1999

11/09/1999

17/09/199925/09/1999

04/10/1999

14/10/1999

03/11/1999

17/11/199925/11/1999

02/12/1999

07/12/1999

16/12/1999

18/12/1999

15/01/2000

01/02/2000

18/02/200002/03/2000

16/03/2000

04/04/2000

05/04/2000

17/04/2000

03/05/200016/05/2000

05/06/2000

14/06/2000

17/06/2000

19/07/2000

930 Kg



0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300Operation time in days

1

10

100

1000

10000

Hyd

roca

rbon

con

cent

ratio

n in

mg/

m3

g312sg2.grf

0

10

20

30

40

50

Tota

l am

ount

of e

limin

ated

hyd

roca

rbon

s in

Kg



25/07

/199904

/08/19

9912

/08/19

9920

/08/19

9927

/08/19

9903

/09/19

9911

/09/19

9917

/09/19

9925

/09/19

9904

/10/19

9914

/10/19

99 03/11

/1999

17/11

/1999

25/11

/1999

02/12

/1999

07/12

/1999

16/12

/1999

18/12

/1999

15/01

/2000 01

/02/20

0018

/02/20

0002

/03/20

0016/03

/2000

04/04

/2000

05/04

/2000

17/04

/2000 03

/05/20

0016

/05/20

00

46 Kg

Decontamination completed



0 50 100 150 200 250 300 350 400 450 500 550Operation time in days

10

100

1000

10000

100000

Hyd

roca

rbon

con

cent

ratio

n in

mg/

m3

g312sg3.grf

0

500

1000

1500

2000

2500

3000

3500

4000

4500

5000

5500

6000

6500

7000

7500

Tota

l am

ount

of e

limin

ated

hyd

roca

rbon

s in

Kg



25/07/1999

04/08/1999

12/08/1999

20/08/1999

27/08/199903/09/1999

11/09/1999

17/09/1999

25/09/1999

04/10/1999

14/10/1999

03/11/1999

17/11/199925/11/1999

02/12/199907/12/1999

16/12/1999

18/12/1999

15/01/2000

01/02/2000

18/02/2000

02/03/2000

16/03/2000

04/04/2000

05/04/200017/04/2000

03/05/2000

16/05/2000

05/06/2000

14/06/2000

17/06/2000

19/07/2000

04/08/200018/08/2000

02/09/2000

16/09/2000

26/09/2000

18/10/2000

31/10/2000

16/12/2000

04/01/2001

15/01/2001

01/02/2001

21/02/200104/03/2001

7650 Kg


at an installation

0 50 100 150 200 250 300 350 400 450 500 550Operation time in days

10

100

1000

10000

Hyd

roca

rbon

con

cent

ratio

n in

mg/

m3

g312sg4.grf

0

2000

4000

6000

8000

10000

12000

14000

16000

18000

20000

22000

24000

26000

28000

Tota

l am

ount

of e

limin

ated

hyd

roca

rbon

s in

Kg



25/0

7/19

9904

/08/

1999

12/0

8/19

9920

/08/

1999

27/0

8/19

9903

/09/

1999

11/0

9/19

9917

/09/

1999

25/0

9/19

9904

/10/

1999

14/1

0/19

99

03/1

1/19

99

17/1

1/19

9925

/11/

1999

02/1

2/19

9907

/12/

1999

16/1

2/19

9918

/12/

1999

15/0

1/20

00

01/0

2/20

00

18/0

2/20

00

02/0

3/20

00

16/0

3/20

00

04/0

4/20

0005

/04/

2000

17/0

4/20

00

03/0

5/20

00

16/0

5/20

00

05/0

6/20

0014

/06/

2000

17/0

6/20

00

19/0

7/20

00

04/0

8/20

00

18/0

8/20

00

02/0

9/20

00

16/0

9/20

0026

/09/

2000

18/1

0/20

00

31/1

0/20

00

16/1

2/20

00

04/0

1/20

01

15/0

1/20

01

01/0

2/20

01

21/0

2/20

01

04/0

3/20

01

28438 Kg

Progress of the oil product floating on the groundwater -Measurements in the recovery wells

Time(in days)

Recovered oil Bioslurping

(in m3)

Recovered oil by Skimming (in m3)

100 5,0 6,0

200 7,5 7,0

300 10,1 8,2

360 12 9,1

Thickness of the oil product floating on the groundwater -Measurements in the Bioslurper wells

In-situ and on Site Remediation of Soil and Groundwater ... · ENVIRONMENTAL TECHNOLOGY - BR ANCHES...

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Transcript of In-situ and on Site Remediation of Soil and Groundwater ... · ENVIRONMENTAL TECHNOLOGY - BR ANCHES...