id	keyword
brj-22663	sludge
brj-22663	dewatering
brj-22663	sludge cake
brj-22663	wastewater sludge
brj-22663	sludge dewatering
brj-22663	content
brj-22663	pressure
brj-22663	time
brj-22663	thickness
brj-22663	paper
brj-22663	paper sludge