IJsseloog
Encyclopedia
The IJsseloog is an artificial island in the Ketelmeer
(province of Flevoland
, The Netherlands
) used as a deposit of silt
pollution. Most of that silt deposited in by the Ketelmeer
between 1950 and 1990.
Removal of silt soil of the lake Ketelmeer also aims to deepen the channel leading to the mouth of the IJssel (at least a depth of 3.5m). Thus, it aims to improve access to the river for navigation.
During the construction of IJsseloog, a major concern was to preserve the water table and environment Ketelmeer. The silt is to be stored permanently and without any risk of leakage. For now, cleaning the silt is not yet feasible. To avoid nuisance to agriculture and for local residents, the deposit was built in the center of the lake and not on the coast. IJsseloog also a target of recreational and ecological development. Two other artificial islands were created Hanzeplaat and Schokkerbank.
The construction of IJsseloog started in 1996 and was completed in 1999. The deposit can hold 20 million cubic meters of silt. In this capacity, 15 million cubic meters are intended for the deposit of silt Ketelmeer, and the remaining 5 million cubic meters will be used to deposit silt from elsewhere. The amount of waste that is stored on the island of 23 million m³.
On the border, a port was built. Once the deposit completed remediation will be done by decantation. Cleaned the silt will be used for construction of a new ecological zone, the IJsselmonding. The clean sludge that is released will be used for the construction of natural IJssel estuary.
Treatment plant began in 2000, the processing station separates sand and peat from the contaminant. Purified sand will be used for construction, and the remaining sludge is pumped to storage. When storage will be full, the layers of clay and sand will be sealed, and the island itself will be used for recreational purposes.
After that process, Nature will take over in the IJsseloog.
Ketelmeer
The Ketelmeer , is the tongue of the IJsselmeer into which the IJssel actually drains, it is situated between the polders Noordoostpolder and East Flevoland, and connects the river IJssel to the lake IJsselmeer...
(province of Flevoland
Flevoland
Flevoland is a province of the Netherlands. Located in the centre of the country, at the location of the former Zuiderzee, the province was established on January 1, 1986; the twelfth province of the country, with Lelystad as its capital...
, The Netherlands
Netherlands
The Netherlands is a constituent country of the Kingdom of the Netherlands, located mainly in North-West Europe and with several islands in the Caribbean. Mainland Netherlands borders the North Sea to the north and west, Belgium to the south, and Germany to the east, and shares maritime borders...
) used as a deposit of silt
Silt
Silt is granular material of a size somewhere between sand and clay whose mineral origin is quartz and feldspar. Silt may occur as a soil or as suspended sediment in a surface water body...
pollution. Most of that silt deposited in by the Ketelmeer
Ketelmeer
The Ketelmeer , is the tongue of the IJsselmeer into which the IJssel actually drains, it is situated between the polders Noordoostpolder and East Flevoland, and connects the river IJssel to the lake IJsselmeer...
between 1950 and 1990.
Removal of silt soil of the lake Ketelmeer also aims to deepen the channel leading to the mouth of the IJssel (at least a depth of 3.5m). Thus, it aims to improve access to the river for navigation.
During the construction of IJsseloog, a major concern was to preserve the water table and environment Ketelmeer. The silt is to be stored permanently and without any risk of leakage. For now, cleaning the silt is not yet feasible. To avoid nuisance to agriculture and for local residents, the deposit was built in the center of the lake and not on the coast. IJsseloog also a target of recreational and ecological development. Two other artificial islands were created Hanzeplaat and Schokkerbank.
The construction of IJsseloog started in 1996 and was completed in 1999. The deposit can hold 20 million cubic meters of silt. In this capacity, 15 million cubic meters are intended for the deposit of silt Ketelmeer, and the remaining 5 million cubic meters will be used to deposit silt from elsewhere. The amount of waste that is stored on the island of 23 million m³.
On the border, a port was built. Once the deposit completed remediation will be done by decantation. Cleaned the silt will be used for construction of a new ecological zone, the IJsselmonding. The clean sludge that is released will be used for the construction of natural IJssel estuary.
Treatment plant began in 2000, the processing station separates sand and peat from the contaminant. Purified sand will be used for construction, and the remaining sludge is pumped to storage. When storage will be full, the layers of clay and sand will be sealed, and the island itself will be used for recreational purposes.
After that process, Nature will take over in the IJsseloog.