Mitundu ya 2 yazinthu zomwe zitha kubwezeretsedwanso ndiukadaulo wa nanofiltration

Kodi nanofiltration ndi chiyani?

Nanofiltration (NF) ndi semi-permeable membrane (chotchinga chocheperako kwambiri) chomwe chimagwiritsidwa ntchito kusefa zakumwa m'mafakitale osiyanasiyana. Nanofiltration pore kukula ndi pakati pa 1 ~ 10 nm, pakati reverse osmosis ndi ultrafiltration, ndipo ndi wachiwiri wandiweyani filimu.

Madzi amakankhidwa kudzera mu nembanemba ndi kuthamanga: particles ang'onoang'ono kuposa awiri a nanofiltration nembanemba kabowo adzadutsa, pamene particles zazikulu kuposa awiri a nanofiltration nembanemba kabowo adzakhala msampha. Tizikhala ndi tinthu tating'onoting'ono tokha, koma zitha kukopa kapena kubwezeretsana ndi zodetsa zina kutengera mlandu kutengera kapena kulumikizana kwa mankhwala, timatchera membrane pamwamba.

Nanofiltration imapangitsa kuti madzi azikhala abwino, ndipo amagwiritsa ntchito mphamvu zochepa kuposa reverse osmosis (RO). Pochiza madzi ena omwe safunikira kuchotsa mchere wambiri, ma nanofiltration nembanemba angagwiritsidwe ntchito ngati njira yothandiza ya RO, yomwe imatha kuchotsa mabakiteriya, ma virus, organic matter ndi ayoni bivalent.

Nanofiltration idagwiritsidwa ntchito pochotsa sulphate m'makampani amafuta ndi gasi, koma tsopano imagwiritsidwa ntchito m'mafakitale opangira madzi, mwachitsanzo, kufewetsa madzi, kumwa madzi akumwa ndikuthira madzi ambiri otayira m'mafakitale ndi brine. Posachedwapa, nanofiltration yagwiritsidwanso ntchito kuchotsa zowonongeka zomwe zikubwera m'madzi akumwa.

Ukadaulo wa Nanofiltration utha kuyambiranso madzi apamwamba kwambiri omwe amayenera kugwiritsidwanso ntchito, mogwirizana ndi lingaliro lachuma chozungulira, komanso kudzera pakubwezeretsanso zinthu zina (monga zamoyo, mchere ndi mankhwala) pang'onopang'ono akupeza chidwi pamsika.

Sodium hydroxide (NaOH)

Sodium hydroxide (NaOH) ndi mchere wambiri wamchere womwe umawononga ndikusungunula zinthu zakuthupi ndi zakuthupi. Choncho, amagwiritsidwa ntchito poyeretsa, kuchotsa mafuta ndi kuchotsa njira m'mafakitale osiyanasiyana.

Chifukwa cha kuchuluka kwa zoipitsa mu zinyalala caustic soda, nthawi zambiri sagwiritsidwanso ntchito popanga mafakitale. M'malo mwake, mankhwala ena, monga hydrochloric kapena sulfuric acid, amafunika kuwonjezeredwa kuti achepetse mchere. Komabe, ndiukadaulo wa nanofiltration, zinyalala za soda zimatha kubwezeredwa ndikugwiritsidwanso ntchito pochotsa zonyansa.

Mmodzi mwa anthu ogula kwambiri m'chigawo cha caustic soda ndi South Asia, yomwe ili ndi mafakitale akuluakulu a nsalu. Pano, yankho la caustic soda silimagwiritsidwa ntchito poyeretsa, komanso ndi gawo lofunika kwambiri pakupanga nsalu, makamaka pakupanga bleaching komwe kumapangitsa kuti mphamvu, kuwala ndi utoto ukhale wogwirizana ndi ulusi wa thonje.

Kuyambira 2020, talandira mafunso pafupipafupi a nanofiltration nembanemba pamsika waku Southeast Asia. Chifukwa chake, mchaka chomwechi, kampani yathu idapanga mzere wake wopanga nanofiltration membrane. Pangani kulumikizana kwaukadaulo ndi magulu ochokera kumitundu yodziwika padziko lonse lapansi monga Dow, HYDRANAUTICS, Toray, Vontron, ndi zina zambiri.

Chithunzi cha HNF-8040HF ndiye chitsanzo chathu choyamba cha nano membrane, chomwe chinakhala chitsanzo chachikulu chotsatiridwa ndipo chinayamikiridwa kwambiri ndi ogwiritsa ntchito opanga nsalu.

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Feteleza wobwezerezedwanso

Phosphorus, michere yofunika kwambiri mu feteleza, yayamba kuchepa, zomwe zikudzetsa nkhawa za kupezeka kwa chakudya kwanthawi yayitali. Phosphorus ndi gwero lomaliza lomwe limachokera ku migodi ya phosphate. Ndi nkhokwe za phosphorous zapadziko lonse lapansi zikucheperachepera ndikukhazikika kumadera amodzi, maunyolo ogulitsa ali pachiwopsezo.

Nthawi yomweyo, kuchuluka kwa michere yamtengo wapatali imeneyi kumawononga kwambiri zachilengedwe, zomwe zimawononga kwambiri madzi kudzera munjira ya eutrophication. Pogwira ndi kukonzanso chomangamangachi kuti apange chilengedwe, zovuta ziwiri zingathe kuthetsedwa nthawi imodzi: chitetezo cha chakudya ndi kuwonongeka kwa chilengedwe.

Ngakhale kuti nanofiltration si njira yofunikira pakupanga feteleza wobwezerezedwanso, imatha kupanga chinthu chapamwamba kwambiri pochotsa zonyansa ndikuyika zakudya m'madzi am'mimba. Ndi njira ya coagulation-flocculation, zopangira zimatha kuipitsidwa ndi mankhwala otsalira, pamene nanofiltration imapewa vutoli podzilekanitsa mwakuthupi kudzera mu nembanemba osati mankhwala. Kuphatikiza pakupanga zida zapamwamba kwambiri zachilengedwe komanso kupanga phindu kwa ogwiritsa ntchito kumapeto, mtundu wamadzi otayidwa wawongoleredwanso ndipo mtengo wamankhwala a biosolids wachepetsedwa.