Cov yam ntxwv ntawm volcanic pumice (basalt) thiab cov khoom siv lub cev ntawm cov pob zeb volcanic biological lim cov ntaub ntawv.

Tsos thiab duab: Tsis muaj cov khoom ntse, tsis kam rau dej ntws, tsis yooj yim thaiv, dej thiab cua faib sib npaug, nto ntxhib, zaj duab xis dai ceev, thiab tsis tshua muaj kev sib cais ntawm cov kab mob me me thaum lub sijhawm yaug dua.
Porosity: Cov pob zeb volcanic yog cov cellular thiab porous, ua rau lawv yog qhov chaw loj hlob zoo tshaj plaws rau cov zej zog microbial.

Lub zog kho tshuab: Raws li lub chaw haujlwm tshuaj xyuas zoo hauv tebchaws, nws yog 5.08Mpa, uas tau ua pov thawj tias tuaj yeem tiv taus cov teebmeem hydraulic shear ntawm ntau lub zog sib txawv thiab muaj lub neej ua haujlwm ntev dua li lwm cov ntaub ntawv lim dej.
Qhov Ceev: Qhov ceev nruab nrab, yooj yim rau kev ncua thaum lub sijhawm rov qab ntxuav yam tsis muaj cov khoom xau, uas tuaj yeem txuag hluav taws xob thiab txo kev siv.
Kev ruaj khov ntawm cov tshuaj lom neeg: cov pob zeb volcanic lim dej yog cov khoom siv tiv taus corrosion, inert, thiab tsis koom nrog hauv cov tshuaj tiv thaiv biochemical ntawm biofilm hauv ib puag ncig.

Hluav taws xob ntawm qhov chaw thiab hydrophilicity: Qhov chaw ntawm cov pob zeb volcanic biofilter muaj qhov them zoo, uas yog qhov zoo rau kev loj hlob ntawm cov kab mob me me. Nws muaj hydrophilicity muaj zog, ntau cov biofilm txuas nrog, thiab ceev ceev.
Hais txog qhov cuam tshuam rau kev ua haujlwm ntawm biofilm: Ua tus nqa biofilm, cov pob zeb volcanic biofilter media tsis muaj teeb meem thiab tsis muaj kev cuam tshuam rau cov kab mob me me, thiab kev xyaum tau ua pov thawj tias nws tsis cuam tshuam rau kev ua haujlwm ntawm cov kab mob me me.

Cov yam ntxwv hydraulics ntawm cov pob zeb volcanic biological lim khoom.
Tus nqi tsis muaj dab tsi: Qhov nruab nrab porosity sab hauv thiab sab nraud yog li ntawm 40%, uas tsis tshua muaj kev tiv thaiv dej. Tib lub sijhawm, piv rau cov ntaub ntawv lim dej zoo sib xws, cov khoom siv lim dej xav tau tsawg dua, thiab lub hom phiaj lim dej xav tau kuj tuaj yeem ua tiav.
Thaj chaw tshwj xeeb: Nrog thaj chaw loj tshwj xeeb, porosity siab, thiab inertness, nws yog qhov zoo rau kev sib cuag thiab kev loj hlob ntawm cov kab mob me me, tswj cov kab mob biomass siab, thiab pab txhawb cov txheej txheem hloov pauv ntawm cov pa oxygen, cov as-ham, thiab cov khib nyiab tsim thaum lub sijhawm microbial metabolism.
Cov duab ntawm cov khoom siv lim dej thiab cov qauv dej ntws: Vim yog cov khoom siv lim dej ntawm pob zeb volcanic yog cov khoom me me uas tsis yog cov ntse thiab muaj qhov loj dua li cov khoom siv ceramic, lawv muaj kev tiv thaiv tsawg dua rau cov dej ntws thiab txuag kev siv hluav taws xob thaum siv.

Nws cov yam ntxwv yog tias nws muaj ntau lub qhov hws, lub teeb yuag, lub zog siab, rwb thaiv tsev, nqus suab, tiv thaiv hluav taws, tiv thaiv kua qaub thiab alkali, tiv thaiv corrosion, thiab tsis muaj kuab paug thiab tsis muaj radioactive. Nws yog cov khoom siv raw zoo tshaj plaws ntsuab, tus phooj ywg ib puag ncig thiab txuag hluav taws xob.