INTRODUCTION OF BOSKALIS ENVIRONMENTAL - … Environmental... · WATER TREATMENT IN COOPERATION...
Transcript of INTRODUCTION OF BOSKALIS ENVIRONMENTAL - … Environmental... · WATER TREATMENT IN COOPERATION...
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NEIL GEEVERS, SENIOR PROGRAM MANAGER RON DIELHOF, PROJECT ENGINEER / PROCESS MANAGER
LONE STAR HARBOR SAFETY COMMITTEE, DREDGING SUBCOMMITTEE, HOUSTON, TX
JUNE 2, 2015
INTRODUCTION OF BOSKALIS ENVIRONMENTAL
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INDEX
01 OUR HISTORY
02 OBJECTIVES
03 IMPLEMENTATION PHILOSOPHY
04 TECHNOLOGY
05 NORTH AMERICAN EXPERIENCE
06 BENEFICIAL RE-USE FOX RIVER
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INTRODUCTION 1979: Dolman bv founded by Mr. Johan Dolman
1990: Acquired and incorporated as Boskalis Dolman
Working internationally under the brand name Boskalis Environmental
In the US we work under the following entities:
− SECI: Stuyvesant Environmental Contracting LLC
Princeton, NJ office
− SPRI: Stuyvesant Projects Realization Inc.
Fox River project, Green Bay WI
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INDEX
01 OUR HISTORY
02 OBJECTIVES
03 IMPLEMENTATION PHILOSOPHY
04 TECHNOLOGY
05 NORTH AMERICAN EXPERIENCE
06 BENEFICIAL RE-USE FOX RIVER
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THE OBJECTIVE OF SEDIMENT MANAGEMENT IS TO MINIMIZE
THE CONTAMINATED VOLUME DISPOSED OF AT THE LANDFILL BY
RE-USE OF THE SEPARATED COARSE FRACTIONS (SAND + GRAVEL)
AND BY DEWATERING OF THE FINE (CONTAMINATED) FRACTION.
OBJECTIVES
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INDEX
01 OUR HISTORY
02 OBJECTIVES
03 IMPLEMENTATION PHILOSOPHY
04 TECHNOLOGY
05 NORTH AMERICAN EXPERIENCE
06 BENEFICIAL RE-USE FOX RIVER
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1. REGIONAL APPROACH
Established Regional Locations
> 30 years and 15 million tons experience
> 10 million tons re-used 2. PROJECT SPECIFIC DESIGN
Sampling & Treatability/Feasibility Study
In-house Engineering & Design
Construction
Operation & Maintenance 3. COMPATIBLE WITH OTHER REMEDIAL TECHNOLOGIES
(STABILIZATION, THERMAL)
IMPLEMENTATION PHILOSOPHY
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Acc
epta
nce
Sto
rage
P
roce
ss
Separation
Testing R
e-use
Regional Soil Management Facility
REGIONAL MANAGEMENT FACILITIES
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INDEX
01 OUR HISTORY
02 OBJECTIVES
03 IMPLEMENTATION PHILOSOPHY
04 TECHNOLOGY
05 NORTH AMERICAN EXPERIENCE
06 BENEFICIAL RE-USE FOX RIVER
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TECHNOLOGY
SAND SEPARATION (FRACTION 0.063 - 3mm)
(negative pressure)
Sand
Fines
0-0.063mm
Inlet
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INDEX
01 OUR HISTORY
02 OBJECTIVES
03 IMPLEMENTATION PHILOSOPHY
04 TECHNOLOGY
05 NORTH AMERICAN EXPERIENCE
06 BENEFICIAL RE-USE FOX RIVER
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NORTH AMERICAN EXPERIENCE Miami River Fox River (OU 2 – 5) Passaic River Phase 1
Location Miami, Florida (USA) Green Bay, Wisconsin (USA) Newark, New Jersey (USA)
Time frame 2004 – 2008, in 2 phases, about 1 year total operation
Construction 2008-2009 Started 2009 and ongoing
Construction 2011, Remediation Spring 2012
Duration ~ 1 year ~ 9 years 80 days operational
Purpose Maintenance Dredging Cleanup Cleanup
Contaminants of Concern Heavy Metals (Arsenic) PCB’s Dioxin
Volume ~ 720,000 cy ~ 4,500,000 cy ~ 40,000 cy
Production Rates 1,750 CY per day 4,000 CY per day 500 CY per day
Operational schedule 24/7 Operation 24/5 Operation 12/6 Dredging and preconditioning, 24/6 Dewatering
Dredging Mechanical Dredging Hydraulic Dredging Mechanical Dredging in Enclosure
Processing Standardized Mobile Plant Purpose built Fixed Plant Purpose built (mobile) Plant
Dewatering Belt Filter Presses Membrane P & F Presses Membrane P & F Presses (mobile)
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• DREDGING AND PROCESSING OF 540,000 m3 SEDIMENT FROM MIAMI RIVER
• CAPACITY: >1,500 IN-SITU m3 /DAY
• MASS BALANCE
• 52% sand (0.063 - 3mm)
• 24% filter cake (< 0.063mm)
• 19% coarse material (20mm - 30cm)
• 5% fine material (3 - 20 mm)
• 70% OF MATERIAL RE-USED
• SEDIMENTS CONTAMINATED WITH HEAVY METALS (ARSENIC)
MIAMI RIVER (2005 & 2008)
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PASSAIC RIVER – PHASE I (2012)
• DREDGING AND PROCESSING OF 40,000 CY SEDIMENT FROM PASSAIC RIVER (30,500 m3)
• HIGHLY CONTAMINATED SEDIMENT (“HOT SPOT” CLEAN UP)
• 80 DAYS TIME LIMIT
• CAPACITY: 500 IN-SITU CY/DAY (380 m3 /DAY)
• MAIN CONTAMINATION:
• 2,3,7,8 - tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD), (Agent Orange)
• PCBs
• Mercury
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FOX RIVER CLEANUP:
• 13 MILES (21 KM) OF RIVER
• 4.5 MILLION CUBIC YARDS OF SEDIMENT (3.4 Mm3)
• CAPACITY: 4,000 IN-SITU CY/DAY (3,000 m3 /DAY)
• SEDIMENTS CONTAMINATED WITH PCBs
• DREDGING, SEDIMENT MANAGEMENT, CAPPING, AND WATER TREATMENT IN COOPERATION WITH TETRA TECH EC & JF BRENNAN
• INTEGRATED PROJECT: SEDIMENT CHARACTERIZATION, SEDIMENT TREATMENT, TRANSPORT & DISPOSAL AND BENEFICIAL RE-USE OF SAND
FOX RIVER (2009 – ONGOING)
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INDEX
01 OUR HISTORY
02 OBJECTIVES
03 IMPLEMENTATION PHILOSOPHY
04 TECHNOLOGY
05 NORTH AMERICAN EXPERIENCE
06 BENEFICIAL RE-USE FOX RIVER
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PROJECT TEAM
Client Lower Fox River Remediation LLC
Engineering Design & Construction Tetra Tech
Dredging & Capping J.F. Brennan Co., Inc.
Desanding & Dewatering Stuyvesant Projects Realization Inc., affiliate of Boskalis Dolman
Anchor QEA, LLC assist with design
URS assist with modeling
Numerous local construction subcontractors
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PROCESSING SINGLE STREAM
PROCESS
101,000 FILTER CAKE
DROPS (TO DATE), 587
DROPS PER WEEK (24/5)
1.8M TONS FILTER CAKE
+350,000 TONS SAND
IN A 6 ACRE BUILDING
AIR QUALITY
CONDITIONED
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PROCESSING The Process is a 3 phase treatment system
1) Pre-conditioning
2) Sand separation and polishing for beneficial reuse, two sand fractions are separated
3) Mechanical dewatering
Pictures:
Top left : ¼” prescreening
Top right : hydro-cyclones
Bottom left : upstream classifier
Bottom right : dewatering screen
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WHY SEPARATING THE SAND FRACTION? • VARIOUS BENEFICIAL REUSE OPPORTUNITIES
• AVOID CONSUMING LANDFILL SPACE
• AVOID UNNECESSARY EXPENSE FOR T&D AS WASTE
• PREVENT ADDITIONAL WEAR AND TEAR ON DOWNSTREAM
PROCESS EQUIPMENT
• REDUCE THE DEWATERING CYCLE TIME FROM NOT HAVING
TO PROCESS THE SAND
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SEPARATED SAND QUANTITIES (SO FAR)
• ~ 30,000 TONS OF SAND IN 2009 • ~ 70,000 TONS OF SAND IN 2010 • ~ 25,000 TONS OF SAND IN 2011 • ~ 55,000 TONS OF SAND IN 2012 • ~ 75,000 TONS OF SAND IN 2013 • ~ 100,000 TONS OF SAND IN 2014
Recovered sand outside of processing
facility
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EXAMPLE OF SAMPLING PROTOCOL* • Fine & coarse sand sampled once every 1,000 cy for the first
10,000 cy
• Then one sample per 10,000 cy for 10,000 to 50,000 cy
• Then one sample per 50,000 cy thereafter
* Local legislation will define the Sampling Frequency and the Sampling Protocol
Besides chemical compliance with local requirements, the geotechnical properties will also have to meet local requirements in order to be able to re-use the materials. (e.g. Particle Size Distribution, Organic Content, Compaction, etc)
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BENEFICIAL REUSE PROCESS • PREPARE AND SUBMIT LOW HAZARD WASTE EXEMPTION REQUEST NAMING
SPECIFIC OFFSITE PROJECTS (*ONE REQUEST PER PROJECT)
• PUBLIC WORKS PROJECTS ARE PREFERRED
• ADDRESS WDNR COMMENTS TO THE REQUEST
• PARTICIPATE IN PUBLIC MEETING CONCERNING THE REQUEST
• FINALIZE COMMERCIAL ARRANGEMENTS
• PROVIDE APPROPRIATE TEMPORARY EROSION CONTROLS AT THE BENEFICIAL REUSE SITE
• TRACK AND REPORT ON SAND SHIPPED FOR BENEFICIAL REUSE.