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DWA Industry Guide Watermanagement, Wastewater-Waste
Category "14.4 Sludge treatment and utilisation" contains these sub-categories
Agricultural utilisation of sewage sludge (5 companies)
Drying and incineration of industrial waste sludge (3 companies)
Installations for sludge removal from wastewater ponds (3 companies)
Mobile sewage sludge drying and dewatering (6 companies)
Sewage sludge co-incineration (7 companies)
Sewage sludge humification (2 companies)
No entries for this category