The use of lime to eliminate small mud balls in filters.
CLARK
A E
AE
D017610:Calcium Compounds; D005374:Filtration; D010087:Oxides; D012722:Sewage / Q000302:isolation & purification*; D014867:Water
D017610:Calcium Compounds; D010087:Oxides; D012722:Sewage; D014867:Water; C016538:lime
SEWAGE/purification; WATER/filtration