The largest plastic e-chain® in the world, the E4.350, is used for this application. It has an inner height of 35 centimetres and is available with inner widths up to 1,000 millimetres. Brackwater from the Port of Antwerp is routed into the tanks and the sludge is suctioned off by pumps for treatment. The pumps can be moved over the whole bridge length of 140 metres. The heavy hoses (approx. 100 kg per metre) have to be routed safely and protected from mechanical abrasion on the bridge.