Ungabhekana kanjani ne-RO membrane fouling
Ukungcola kwe-Membrane kusho into engenakuhlehliswa lapho izinhlayiya, izinhlayiya ze-colloidal, noma ama-macromolecules asolute kusixazululo sokuphakelayo athintana ne-adsorb ye-membrane futhi abeke phezu kolwelwesi noma izimbotshana ngenxa yokusebenzelana ngokomzimba noma kwamakhemikhali nolwelwesi, noma ukuhlukaniswa kwe-concentration okubangela ukuthi izincibilizi ezithile zeqe ukunyibilika kwazo kanye nokuncipha kosayizi we-membrane, ulwelwesi olubonakalayo nokuncipha kolwelwesi. ukuguquguquka kanye nezici zokuhlukanisa.
Ukungcoliswa kwamagciwane
1) Izizathu zokwakheka kwayo
Ukungcoliswa kwamagciwane kubhekisela esenzakalweni lapho ama-microorganisms enqwabelana ku-membrane water interface, ngaleyo ndlela kuthinte ukusebenza kwesistimu. Lawa ma-microorganisms ayanda futhi akhule kusetshenziswa ulwelwesi lwe-osmosis olubuyela emuva njengabathwali kanye nemisoco evela engxenyeni yamanzi egxilile ye-osmosis ehlehlayo, yakhe ungqimba lwe-biofilm ebusweni bolwelwesi olubuyela emuva lwe-osmosis. Lokhu kuholela ekwenyukeni okusheshayo komehluko wengcindezi phakathi kokungena nokuphuma kwesistimu ye-osmosis ehlehlayo, ukwehla okusheshayo kokukhiqizwa kwamanzi nezinga lokukhipha usawoti emanzini, kanye nokungcoliswa kwamanzi omkhiqizo. Amafilimu e-biofilm akhiwe ama-microorganisms angakwazi ngokuqondile (ngesenzo se-enzymatic) noma ngokungaqondile (nge-pH yendawo noma amandla okunciphisa) ehlise ama-polymers olwelwesi noma ezinye izingxenye zeyunithi ye-osmosis ehlehlayo, okuholela ekufinyezweni kwesikhathi sokuphila kolwelwesi, ukulimala kobuqotho besakhiwo solwelwesi, ngisho nokwehluleka okukhulu kwesistimu.
2) Indlela yokulawula
Indlela yokulawula yokunukubezeka kwebhayoloji ingafinyelelwa ngokubulala amagciwane ngokuqhubekayo noma ngezikhathi ezithile kanye nokubulala amagciwane emanzini angenayo. Imishini yokubulala inzalo kanye nemithamo kufanele ifakwe emanzini aluhlaza aqoqwe phezulu nangaphansi komhlabathi angashoni, futhi ama-fungicides e-chlorine kufanele afakwe. Umthamo ngokuvamile usekelwe kokuqukethwe kwe-chlorine eyinsalela kuthonya elingaphezu kuka-1mg/L.
Ukungcola kwamakhemikhali
1) Izizathu zokwakheka kwayo
Izimbangela ezivamile zokungcoliswa kwamakhemikhali ukufakwa kwesikali se-carbonate ngaphakathi kwezingxenye ze-membrane, okubangelwa kakhulu ukusetshenziswa okungalungile, uhlelo lokudosa lwe-scale inhibitor olungaphelele, kanye nokuphazamiseka komthamo we-scale inhibitor ngesikhathi sokusebenza. Uma kungatholwa ngesikhathi esifanele, ukwenzeka kokwanda kwengcindezi yokusebenza, ukukhuphuka komehluko wengcindezi, nokuncipha kwezinga lokukhiqiza amanzi kuzokwenzeka ezinsukwini ezimbalwa. Uma i-scale inhibitor ekhethiwe ingafani nekhwalithi yamanzi noma umthamo unganele, ukukala ngaphakathi kwe-elementi yolwelwesi nakho kuzokwenzeka. Ukulinganisa okuncane ngaphakathi kwe-elementi yolwelwesi kungabuyiselwa emsebenzini wako ngokuhlanza amakhemikhali, futhi ezimeni ezinzima, kungabangela nokuthi izakhi zolwelwesi ezingcoliswe kakhulu zilahlwe.
2) Indlela yokulawula
Indlela yokulawula yokuvimbela ukukala ngaphakathi kwesici solwelwesi iwukuba uqale ukhethe i-reverse osmosis scale inhibitor efanelekile yekhwalithi yomthombo wamanzi wesistimu, bese unquma umthamo ophelele. Okwesibili, qinisa ukuqapha uhlelo lokudosa, uqaphe ngokucophelela izinguquko ezicashile kumingcele yokusebenza, futhi uhlonze ngokushesha imbangela yanoma yikuphi ukungahambi kahle. Ngaphezu kwalokho, okuqukethwe okuphezulu kwe-Fe3+ emanzini kubangelwa kakhulu izinhlelo zamapayipi. Ngakho-ke, amapayipi epulasitiki anomugqa wensimbi kufanele asetshenziswe ngangokunokwenzeka kumapayipi esistimu, okuhlanganisa namapayipi omthombo wamanzi, ukuze kuncishiswe okuqukethwe kwe-Fe3+.
Izinhlayiyana ezimisiwe kanye nokungcoliswa kwe-colloidal
1) Izizathu zokwakheka kwayo
Izinhlayiya ezimisiwe kanye nama-colloid yizinto eziyinhloko ezivala ulwelwesi lwe-osmosis reverse, futhi ziyizizathu eziyinhloko zokweqa i-SDI engcolile (inkomba yokuminyana kodaka). Ngenxa yomehluko emithonjeni yamanzi nasezifundeni, kunokuhlukahluka okuphawulekayo ekubunjweni kwezinhlayiya ezimisiwe nama-colloid. Izingxenye eziyinhloko zamanzi angaphezulu angangcolisiwe kanye namanzi angaphansi komhlaba angashoni amagciwane, ubumba, i-colloidal silica, i-iron oxides, imikhiqizo ye-humic acid, kanye nokufakwa ngokweqile kwama-coagulant nama-coagulant (njengosawoti wensimbi, usawoti we-aluminium, njll.) ohlelweni lokwelashwa. Ngaphezu kwalokho, imvula eyakhiwe inhlanganisela yama-polymer ane-positive emanzini aluhlaza kanye nama-scale inhibitor akhokhiswa kabi kumasistimu e-osmosis ehlehlayo nakho kungenye yezimbangela zokungcola okunjalo.
2) Indlela yokulawula
Lapho okuqukethwe okuqinile okumisiwe emanzini aluhlaza kudlula u-70mg/L, izindlela zokuhlanganisa, ukucacisa, kanye nokuhlunga kuqala zisetshenziswa; Uma okuqukethwe okuqinile okumisiwe emanzini aluhlaza kungaphansi kuka-70mg/L, ukuhlunga kwe-coagulation kuvame ukusetshenziselwa ukwelashwa kusengaphambili; Uma okuqukethwe okuqinile okumisiwe emanzini aluhlaza kungaphansi kuka-10mg/L, indlela yokuhlunga eqondile yokuhlunga ivame ukusetshenziswa. Ngaphezu kwalokho, i-microfiltration noma i-ultrafiltration iyindlela yokwelapha ulwelwesi olusebenzayo lwe-turbidity kanye ne-insoluble organic matter eye yavela kamuva nje. Ingasusa zonke izinto eziqinile ezimisiwe, amagciwane, ama-colloid amaningi, nezinto eziphilayo ezingancibiliki, futhi iyinqubo efanelekile yokwelashwa kwangaphambili kwamasistimu e-osmosis ehlehlayo.