Moving Bed Biofilm Reactor (MBBR): Akụrụngwa a na-eji akụkụ talc arụ ọrụ dị ka onye na-ebu biofilm, ma na-eji omume nke mmiri na-eruba na-edobe irighiri ihe na-ebu n'ime ahụ mmiri, na-eweda ihe organic nke nsị. Akụrụngwa MBBR nwere njiri mara mma ngbanwe maka ibu organic na ịdị mma ikuku kwụsiri ike, ma dabara adaba maka ọgwụgwọ mmiri mkpofu kemịkalụ, mmiri mkpofu mmanya, mmiri ahịhịa nri, wdg.
Akwụsịghị-Bed Biofilm Reactor (IFAS): Ngwa a bụ ngwaọrụ na-ejikọta biofilm na ụzọ sludge na-arụ ọrụ, na ndị na-ebukarị sponges, kaolin, wdg. IFAS akụrụngwa nwere njirimara nke mgbanwe siri ike na mmiri nsị dị elu na mmetụta ọgwụgwọ kwụsiri ike. , ma dị mma maka ọgwụgwọ mmiri na-ekpofu mmiri na ụlọ ọrụ na-ekpocha mmiri na ogige ntụrụndụ.