{TAIL ~ The fixing carrier} for fixing an activated sludge 1, wherein: the grain size of said granulated blast furnace slag is within {HEAD ~ the range} of from 20 to 200 microns 
{ TAIL ~ The fixing carrier } for fixing an activated sludge 1 , wherein : the grain size of said granulated blast furnace slag is within { HEAD ~ the range } of from 20 to 200 microns
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH