Nau'in ƙarfi (mai ƙarfi mai ƙarfi ko SPFS) shine sabon ƙarni na samfuran muhalli na yau. Polyferrous gishirin baƙin ƙarfe inorganic polymer flocculant, zai iya sauri neutralize mummunan lantarki caji na colloidal particle farfajiyar ruwa, kuma zai iya samar da flocculation tasiri a kan ion-tsakanin gada ko suction yankin. Flocculation da aka samar da babban rabo, saurin sauka, yana nuna kyakkyawan sarrafa sakamako, yana da babban tsabtace ikon idan aka kwatanta da sauran flocculants mara kyau, ana amfani da shi sosai a tsabtace ruwan sha, ruwan masana'antu daban-daban, ruwan sharar gida na masana'antu, ruwan sharar gida na birni. Kayayyakin yana da kwanciyar hankali, kyakkyawan tasirin tsabtace ruwa, ba tare da nauyin ƙarfe mai nauyi ba, kayan da ke da cutarwa kamar ions, yana da inganci daban-daban na decoloration, deodorization, deodorization, sterilization, cire nauyin ƙarfe mai nauyi a cikin ruwa, radioactive abubuwa da cutar kansa da sauransu, cire yawan COD, BOD da launi har zuwa sama da 90%; A low turbidity da high turbidity raw ruwa tsabtace tasiri ne mai kyau. Sauki amfani, low kudi, sarrafawa kudin, gabaɗaya za a iya adana 20% zuwa 50% idan aka kwatanta da amfani da sauran inorganic flocculants