Groundwater Remediation on a former Steel Works Site in Lübeck

Groundwater Remediation on a former Steel Works Site in Lübeck

Groundwater Remediation on a former
Steel Works Site in Lübeck-Herrenwyk,
Germany
Client:
Grundstücksgesellschaft Metallhüttengelände mbH, Lübeck
Engineering Design
and Supervision:
URS WCI Umwelttechnik GmbH, Lübeck
Scope of Works:
Groundwater remediation on an encapsulated site using
sand filtration, activated carbon filtration and heavy metal
adsorption
Contract Period:
October 2001 until end of 2003
The Project:
As part of an earlier remediation program,
the site of the former steel works had been
encapsulated by a vertical cut-off wall and
horizontal capping comprising PVC membranes and a layer of cohesive soil material. In addition, an internal groundwater
control system had been installed. As the
groundwater extracted from the encapsulated site was contaminated with heavy
metals and polycyclic aromatic hydrocarbons (PAH‘s), it had to be remediated.
C
B
A
Index
PIF
PIF
PIF
gez.
Überarbeitung
Überarbeitung
Überarbeitung
Vermerk
21.01.2002
04.09.2001
31.08.2001
Datum
BAUER + MOURIK
UMWELTTECHNIK
Projekt:
In der Scherau 1
86529 Schrobenhausen
Tel. 08252/884-0
erstellt
geprüft
freigegeben
Datum
14.08.2001
14.08.2001
Name
HÖRSCH
GRUNDWASSERREINIGUNG
eh. Metallhütte Lübeck Herrenwyk
Blatt
1
FLIEßBILD
Zeichn. Nr.
Prüfstand:
LÜBECK
0133HÖM-FB
AUSFÜHRUNGSPLANUNG
HERRENWYK
Maßstab: 1:*
Diese Zeichnung unterliegt dem Urheberrecht. Ohne Genehmigung ist keine Kopie oder Weitergabe erlaubt.
A3
Flow diagram
The Site:
For the treatment of the contaminated
water, BMU has set up and now operates a
water treatment plant using sand filtration,
activated carbon filtration and heavy metal
adsorption.
Sand filtration is used to separate particular matter. Organic pollutants are removed
from the water by two activated carbon
water filters connected in series. Subsequently, the water is directed through an
heavy metal adsorption unit in which
heavy metal contamination is removed.
The Result:
The entire plant is operated fully automatically (the sand filter for instance is backwashed automatically). Process visualisation by remote data link has been
designed to enable fault messages to be
transmitted via SMS and service personnel
can monitor and/or correct these faults via
remote data transmission.
Sand filter, activated carbon filter and ion adsorption stage
Depending on the water level in the
drainage channel and in the encapsulated
zone, between 0 and 15 m3 of water are
pumped out by a pumping well and
cleaned in the treatment plant.
Sedimentation and treated water tank
BAUER und MOURIK Umwelttechnik GmbH & Co, D-86529 Schrobenhausen, In der Scherau 1, Tel. (0 82 52) 884-0, Fax 884-111, www.bauer-mourik.de
902.235.2 4/2002
Water treatment plant with view of the river Trave