Based on the concept of sustainable wastewater treatment, the Netherlands developed the NEWs framework for the future of wastewater treatment, in which the Sewage Treatment would be Nutrient, Energy and Water manufacturing plants.

What is a nutrient factory?

After removing inorganic sand and gravel from raw sewage by grit chamber, the phosphorus in sewage is enriched in sludge by biological phosphorus fixation (enhanced biological phosphorus removal, EBPR) , and the treated water is discharged/reused up to the standard After the anaerobic digestion of phosphorus-rich sludge to produce CH 4, phosphorus is recovered mainly from the ashes of the incineration of the dry sludge and phosphate is produced from the supernatant, separate recovery of energy and resources.

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