About: http://webisa.webdatacommons.org/283896246

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The foamy layer (flotosludge) that gathers at the surface is then skimmed off by mechanical or other means.
http://www.w3.org/ns/prov#wasQuotedFrom	bmpcoe.org