It is estimated that the remaining sludge of 150,000 to 160,000 tons that was accumulated on the island over the years when only the primary treatment was active, would be converted to biofuel in the first six months of operation, and used in industry, especially in cement kilns and electricity power plants. On October 5, 2007, environment vice-minister Themistoklis Xanthopoulos announced that there would be no sludge left in the following five months, and that auditors such as the European Court of Auditors had approved the quality of the plant.
It is predicted that the leftover sludge of 150,000 to 160,000 tons accumulated on the island over time when only primary treatment was active would be transformed into biofuel within the first six months of operation and utilized in industries such as cement kilns and power plants. On October 5, 2007, environment vice-minister Themistoklis Xanthopoulos declared that there would be no sludge remaining in the following five months, and that auditors like the European Court of Auditors had endorsed the quality of the plant.