Doro rekudhirowa, rinozivikanwawo sedoro redoro, imhando yeeseptic yakasefa uye aseptic kuzadza doro pasina pasteurization kana tembiricha yakakwira pakarepo disinfection.Iine akapfuma amino acids, makabhohaidhiretsi, inorganic munyu, akasiyana mavhitamini uye akasiyana siyana anoshanda enzymes, ayo anogona kuwedzera chido uye kukurudzira kugaya.
Doro remhando yepamusoro nderemhando yepamusoro yedoro.Sefa uye sterilization ndiyo yakakosha link yekugadzira.Membrane yekuparadzanisa tekinoroji inogona kuchengetedza zvachose marudzi ese ezvikafu muchikafu nekushandisa iyo yekuongorora musimboti.Kana yaiswa pakugadzirwa kwedoro, doro rinogadzirwa rinonyatsojeka uye rakajeka, kuchengetwa kwebubble kwakareba, uye mapuroteni ane hanya uye inotonhora turbidity index inodarika 30% yakaderera pane kusefa kwechuru.Nekudaro, iyo isingadzivisike kusvibiswa kwe membrane inokanganisa zvakanyanya kusefa, uye yakagadzikana equilibrium pass layer ingori 10L/(m²/h), iyo inomisa kushandiswa kwe membrane kusefa tekinoroji mukugadzira doro.
Nzira yekuedza
Iyo pore saizi yekugovera yePVDF membrane yakatemwa neyakazvigadzira bubble point - velocity nzira pore saizi yekugovera tester.Iyo denderedzwa diaphragm inogurwa kubva mufirimu yakaoma, yakanyudzwa muchuru chemvura inonyura kusvikira yashanduka, yabviswa uye yakaomeswa nesefa bepa, uye yozopararira pa detector kuti ionekwe.Iyo yekunyudza mhinduro yaive isopropanol, uye iyo yekumanikidza sosi yaive nitrogen.
Kuti uone kuyerwa kweAngle, 2cmx2cm square diaphragm yakachekwa, yakagadzika pane siraidhi, uye yakaiswa patafura yekuenzanisira kuti ionekwe.Iyo yekubata Angle yemadonhwe emvura kubva pamusoro pefirimu kuti iparare zvachose yakanyorwa.
Nzvimbo dzepamusoro uye dzepasi dzemumiriri wemufirimu sampuli dzakabatanidzwa kune tafura yemuenzaniso ine conductive adhesive maererano.Zvikamu zvemuchinjikwa zvakanyungudutswa uye zvakadzimwa nenitrogen yemvura, uye zvikamu zvemuchinjikwa zvakasungirirwa patafura yemuenzaniso ine conductive adhesive.Mienzaniso yacho yakavharwa muvacuum uye yakaiswa pa electron microscope platform kuti ionekwe.
Microbial count E. coli count: Tora sampuli kuti iongororwe, tarisa GB4789.3-2010 yekuongorora.Yese colony count yedoro rekudhirowa: Draft doro samples dzakatorwa pamberi uye mushure mekusefa uye dzakaedzwa zvinoenderana neGB4789.2-2010.Yeast count: Tora masampula edoro usati wapedza uye wapedza kusefa, tarisa GB4789.15
Iyo hydrophilic pvdf-n kana pvdf-f microfiltration membrane yakaiswa mukati me membrane dziva uye yakasvibiswa ne 121 ° C high-pressure steam ye20min.A self-made filter device (ona Mufananidzo 1) yakashandiswa kuyera kusiyanisa kwekunyorwa kwewaini yefiltration kuyerera nefiltration nguva pasi peLOOkPa filtration repulsion force, uye nzira yekuedza yakaratidzwa mumufananidzo 2. Nzira yekutanga yekusefa ye membrane itsva ndeye inotaridzwa seC. Mushure mekusefa kwenguva yakati kusvika membrane flux attenuation yasvika pakugadzikana kwakagadzikana, membrane yakacheneswa kuti iwanezve membrane inoyerera, uye iyo yakacheneswa membrane yakaenderera mberi kusefa dhizaini doro.Zvikamu zvina zvekutanga zvekuchenesa membrane zvakashambidzwa nemvura, uye mapeji mana ekupedzisira akashambidzwa ne 0.05mo1 / L NaOH solution, 0.05mo1 / L HCl solution uye mvura zvakasiyana.
Nguva yekutumira: Sep-15-2022