Nanofiltration (NF) inyanzvi yekuparadzanisa mvura ye membrane ine zvinhu zvakawanda zvine reverse osmosis (RO). Kusiyana neRO, iyo inoramba zvinenge zvese zvakanyungudutswa solutes, NF inoramba multivalent ions dzakadai calcium apo ichiramba monovalent ions dzakadai chloride.
PaHID membraanes tinopa mutsara we nanofiltration (NF) membranes akagadziridzwa kuti ape yakakwana flux uye kurambwa uye inogona kugadziridzwa kuti isangane nezvinodiwa chaizvo zveakasiyana maitiro maapplication. Yedu nanofiltration membranes, inowanikwa mune spiral-ronda uye flat sheet membrane topology, inogona kuramba multivalent salts uye mamorekuru mamorekuru uku ichiramba nerusaruro kuchinja kwemazinga emonovalent salt.
Iyo nzira yekuparadzanisa ye nanofiltration inoratidzwa ne organic, yakaonda-firimu inoumbwa membranes ine pore saizi kubva 0.1 kusvika 10nm. NF membranes, kusiyana nereverse osmosis (RO) membranes, inogona kushanda pane yakaderera dzvinyiriro uye inobvumira kusarudza solute kurambwa zvichienderana nehukuru uye mutero.
Yedu nanofiltration membranes, ine pore saizi kubva pa 0.1 kusvika 10nm, inobvumira mvura uye mamwe munyu kuti iyerere nepakati apo ichichengeta maion akawanda, yakaderera mamorekuru uremu mamorekuru, makabhohaidhiretsi, mapuroteni, uye zvimwe organic zvinhu. HID's NFS, NFX, NFW, uye NFG nanofiltration membrane zvigadzirwa zvakaratidzwa kuti zvinopa yakanakisa fouling kuramba, kusarudzwa kwepamusoro, uye kusimba kwemuviri kunodiwa kuti ishandiswe mumhando dzakasiyana dzekuparadzanisa maindasitiri mushure memakore ekutsvagisa nekusimudzira.
MgSO4 uye kurambwa kwelactose zvakanaka muNFS, NFX, uye NFW, nepo NFG inobvisa monosaccharides kubva kune oligosaccharides. Nanofiltration membranes inogona zvakare kuderedza zvakanyanya kuoma, nitrate, sulfates, tannins, turbidity, ruvara, TDS, uye nyoro munyu mazinga muhova dzemvura dzekudya.
Nanofiltration membranes ndeye kuwanikwa kutsva kunopa zvirinani ion selectivity pane reverse osmosis membranes, iyo inoramba marudzi ese eion murukova rwekudya. Ichi chimiro chakasiyana chinobvumira kuchinjika kukuru mukuvandudza nzira yekuparadzanisa, iyo inogona kuve neruremekedzo rukuru pakuita uye hupfumi, kunyanya mumaindasitiri ekushandisa. Heino mienzaniso mishoma yemashandisirwo edu tekinoroji yeNF membrane inoshandiswa:
- Lactose uye whey demineralization mukugadzirwa kwemukaka
- Lactose uye whey concentration
- Kubviswa kwezvinhu zvakasikwa zvakasikwa mumvura uye tsvina yemvura
- Kuderedzwa kwekuoma mukuchenesa mvura
- Kubviswa kweSulfate kubva mumvura yegungwa uye makemikari maitiro
- Desalting of process streams mumaindasitiri akasiyana
Nguva yekutumira: Jun-12-2022