1Axel Netzband

30 years Dredged Material Management in the Port of Hamburg

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Natural Suspended Matter Transport in the North Sea

Source: Kappenberg (2007)

from ICONA, 1992; Eisma and Irion, 1988

Hamburg

North Sea

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Need for Water Depth Maintenance

Sedimentation rates up to several meters / year

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Disposal in the 1960‘s

METHA – Treatment since 1993

1993: Investment 70 Mio. Euro | Annual expenditure 15 Mio. Euro

Throughput 1.000.000 m³ per year

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Mechanical treatment …

Hydrocyclones….

…. Band filter press

… and Land Disposal

Beneficial use of treated sediments

Dyke construction

Harbour Basin Backfilling

… have shown: These options arevery limited!

Large scale tests...

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Open Water Placement

Buoy E3

Nesssand

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E L

Dewatering

METHAJV

Feldhofe

Francop

Land TreatmentRelocation

Today‘s Dredged Material Management Concept

~ 3 Million m³cost effectivedependancy

max. 1 Million m³costlylimited

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Mercury in fresh Sediments (mg/kg TS)

Research started METHA into operation

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River Basin Sediment Management

The Elbe:

Length 1,100 km

Population 25 Million

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Tidal ElbeOrganotin

HavelOrganotin, Zn

Schwarze Elster HCH; Cd, Zn, Hg

Czech RepublicDDX, HCB, PCB, TBT, PAK, Haloether, Cd, Zn, Hg

MuldeOrganotin, HCH, HCB, Dioxin/Furan, Cd, As, Zn, Hg, Cu, Pb

SaaleOrganotin, PCB, PAH, HCB, Pentachlorbenzene, Pb, Cd, Zn, Hg, CuDioxin/Furan

Source: „Hintergrundpapier zur Ableitung der überregionalen Bewirtschaftungsziele für die Oberflächengewässer im deutschen Teil der Flussgebietseinheit Elbe für den Belastungsschwerpunkt Schadstoffe,“ FGG Elbe 2009

Elbe Watershed Contamination Sources

Remediation of most significant contaminated sites

Sou

rce:

Ran

k 20

02

Sources = Burdens of the past.

River Basin Sediment Management = Task for the International Elbe River Community.

EC Water Framework Directive = Legal tool for source control.

Pillars of Tidal Elbe Management

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River Engineering- andSediment Management Concept

RIVER ENGINEERING

Construction of shallow areas for tidalvolume

Win-win with floodprotection and climatechange adaptation

OPTIMIZATION ofRELOCATION

Relocation of freshsediments

Flexible, adaptive approach

Sediment traps toconcentratesedimentation

ELBE REMEDIATION

International Elbe Sediment Management Concept

Hamburg supportsupstream measures

LAND DISPOSAL UNTIL 2025

Third disposal site in Hamburg

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Thank you for your attention!

Axel Netzband | Hamburg Port Authority Neuer Wandrahm 4 | D - 20457 Hamburg+49.40.42847-2791 | Axel.Netzband@hpa.hamburg.de

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Pilot ProjectKreetsand / Spadenländer Busch