ʻO ka hoʻopiha piha ʻana o ka moena, ʻike ʻia ʻo MBBR filler, he ʻano hou o ka mea lawe bioactive.Hoʻohana ʻo ia i ke ʻano ʻepekema, e like me nā pono wai like ʻole, hoʻohui i nā ʻano microelement like ʻole i nā mea polymer e kūpono i ka ulu wikiwiki ʻana o nā microorganism i hoʻopili ʻia.ʻO ke ʻano o ka hollow filler he ʻekolu mau ʻāpana o nā pōʻai hollow i loko a i waho, ʻo kēlā me kēia pōʻai i hoʻokahi prong i loko a me 36 prongs ma waho, me kahi ʻano kūikawā, a ua hoʻokuʻu ʻia ka mea hoʻopihapiha i ka wai i ka wā maʻamau.Ke ulu nei ka bacteria anaerobic i loko o ka mea hoʻopiha e hana i ka denitrification;ulu ka bacteria aerobic ma waho e wehe i ka mea olaola, a aia ka nitrification a me ka denitrification kaʻina i loko o ke kaʻina hana lapaʻau holoʻokoʻa.Me nā mea maikaʻi o ka nui o ka ʻāina kikoʻī, hydrophilic a me ka pilina maikaʻi loa, ka hana biological kiʻekiʻe, ke kiʻi ʻoniʻoni wikiwiki, ka hopena mālama maikaʻi, ke ola lōʻihi o ka lawelawe ʻana, a me nā mea ʻē aʻe, ʻo ia ka koho maikaʻi loa no ka wehe ʻana i ka nitrogen amonia, decarbonization a me ka hoʻoneʻe phosphorus, hoʻomaʻemaʻe wai. ka hoʻohana hou ʻana i ka wai, deodorization sege COD, BOD e hoʻokiʻekiʻe i ka maʻamau.