Mwala wophulika (womwe umadziwika kuti pumice kapena porous basalt) ndi chinthu chothandiza komanso chogwirizana ndi chilengedwe, chomwe ndi mwala wamtengo wapatali wopangidwa ndi magalasi ophulika, mchere, ndi thovu pambuyo pa kuphulika kwa chiphalaphala.Mwala wophulika uli ndi mchere wambiri komanso kufufuza zinthu monga sodium, magnesium, aluminium, silicon, calcium, titaniyamu, manganese, chitsulo, nickel, cobalt, ndi molybdenum.Ndiwopanda kuwala ndipo ili ndi mafunde akutali a infrared magnetic.Pambuyo pa kuphulika kwa chiphalaphala chopanda chifundo, pambuyo pa zaka masauzande ambiri, Anthu akupeza phindu lake.Tsopano yakulitsa minda yake yogwiritsira ntchito ku minda monga zomangamanga, zosungira madzi, kugaya, zosefera, makala amoto, kukongoletsa malo, kulima popanda dothi, ndi zinthu zokongoletsera, zomwe zimagwira ntchito yosasinthika m'mafakitale osiyanasiyana.

Makhalidwe a volcanic pumice (basalt) ndi mawonekedwe a volcanic rock biological filter materials.
Maonekedwe ndi mawonekedwe: Palibe tinthu tating'onoting'ono tating'ono tating'ono, kukana kutsika kwamadzi, kosavuta kutsekereza, madzi ndi mpweya wogawanika mofanana, pamwamba pake, filimu yofulumira yolendewera, komanso kuchepa kwa filimu yowonongeka mobwerezabwereza.

Porosity: Mwala wa mapiri ndi ma cell komanso porous, zomwe zimawapangitsa kukhala malo abwino kwambiri okulirapo m'magulu ang'onoang'ono.
Mphamvu zamakina: Malinga ndi dipatimenti yoyang'anira zaubwino wa dziko, ndi 5.08Mpa, yomwe yatsimikiziridwa kuti imapirira kumeta ubweya wamagetsi amphamvu zosiyanasiyana ndipo imakhala ndi moyo wautali wautumiki kuposa zida zina zosefera.
Kachulukidwe: Kachulukidwe kakang'ono, kosavuta kuyimitsa pakutsuka msana popanda kutayikira, komwe kumatha kupulumutsa mphamvu ndikuchepetsa kugwiritsa ntchito.

Kukhazikika kwa biochemical: Zida zosefera pamiyala ya Volcanic ndizosachita dzimbiri, zoziziritsa kukhosi, ndipo sizitenga nawo gawo pamachitidwe a biochemical a biofilms m'chilengedwe.
Magetsi apamtunda ndi hydrophilicity: Pamwamba pa miyala ya volcanic biofilter imakhala ndi mtengo wabwino, womwe umathandizira kukula kosasunthika kwa tizilombo tating'onoting'ono.Ili ndi hydrophilicity yamphamvu, kuchuluka kwa biofilm yolumikizidwa, komanso kuthamanga kwachangu.

Pankhani yakukhudzidwa ndi zochitika za biofilm: Monga chonyamulira cha biofilm, nyimbo zamtundu wa volcanic rock biofilter ndizopanda vuto ndipo zilibe choletsa pa tizilombo tokhazikika, ndipo mchitidwe watsimikizira kuti sizikhudza ntchito za tizilombo tating'onoting'ono.
Makhalidwe a Hydraulics a volcanic rock biological filter material.

Mlingo wopanda kanthu: Wapakati porosity mkati ndi kunja ndi mozungulira 40%, yomwe imakhala yochepa kukana madzi.Nthawi yomweyo, poyerekeza ndi zida zosefera zofananira, kuchuluka kofunikira kwa zinthu zosefera ndizochepa, ndipo cholinga chosefa chomwe chikuyembekezeka chingathenso kukwaniritsidwa.
Malo enieni: Ndi malo akuluakulu enieni, okwera kwambiri, komanso osasunthika, amathandiza kuti tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda, zomwe zimathandizira kuti mpweya, zakudya, ndi zinyalala zomwe zimapangidwira panthawi ya tizilombo. metabolism.
Zosefera mawonekedwe ndi mawonekedwe amadzi oyenda: Chifukwa chakuti zida zosefera zamtundu wa volcanic rock ndi zopanda zisonga ndipo zili ndi pore yayikulupo kuposa tinthu ta ceramic, sizimakana kuyenda kwamadzi ndikusunga mphamvu zikagwiritsidwa ntchito.

Makhalidwe ake ndi oti ali ndi pores ambiri, kulemera kwake, mphamvu zambiri, kutsekemera, kuyamwa kwa mawu, kuteteza moto, asidi ndi alkali kukana, kukana dzimbiri, komanso kulibe kuipitsidwa komanso kosatulutsa ma radio.Ndi abwino zachilengedwe wobiriwira, zachilengedwe wochezeka ndi mphamvu zopulumutsa yaiwisi.