Izimbangela Nezixazululo Zokungcoliswa Kwe-Reverse Osmosis Membrane

1. Izimbangela Eziyinhloko Zokungcola Kwe-RO Membrane

Kuye ngokuthi yiziphi izinto ezibangela ukubola, ukubola kwe-RO membrane kuhlukaniswe kakhulu ngezinhlobo ezine:

• Ukulinganisa Okungaphili (Ukungcola Kwamakhemikhali): Ngesikhathi senqubo yokuhlushwa kwe-RO, usawoti oncibilikayo kancane njenge-calcium, i-magnesium, i-carbonates, i-sulfates, kanye ne-silicates emanzini okuphakelayo udlula imikhawulo yawo yokuncibilika. Uyakhazimula futhi ubekwe ebusweni be-membrane, wakhe ungqimba oluqinile.
• Ukungcola Okungokwemvelo Nokubola Kwesikhumba (Ukungcola Okunamathelayo): Izinto zemvelo eziphilayo (isb., i-humic acid), amafutha, ama-surfactants, noma izinhlayiya ezilengayo ezingasuswanga ngokuphelele kanye nama-colloid emanzini okuphakelayo zinamathela ebusweni be-membrane. Lokhu kwakha ungqimba olungcolile oluqinile olungagcini nje ngokuvimbela ama-membrane pores kodwa futhi olumunca okunye ukungcola.
• Ukungcola Kwezinto Eziphilayo (Ukungcola Kokuzala): Uma ukubulala amagciwane emanzini okuphakelwa kunganele, ama-microorganisms afana namabhaktheriya, isikhunta, kanye nolwelwe anda ngokushesha ebusweni be-membrane. Akha i-biofilm eqinile futhi akhiphe ama-metabolites angonakalisa izakhi ze-membrane.
• Ukungcola Kwezinhlayiya (Ukungcola Okungokwenyama): Izinhlayiya eziqinile ezilengayo njengesihlabathi nokugqwala emanzini okuphakelayo zivame ukungena ohlelweni ngenxa yokwelashwa okunganele noma okwehluleka. Zihlala ebusweni be-membrane noma ezindaweni ezihlanganayo zezindawo zokuphakelayo.

2. Indlela Yokunquma Uma Kudingeka Ukuhlanza

Ukuhlanza ngokuvamile kuyadingeka uma uhlelo lunezimo ezilandelayo:

• Ukuncipha Kokugeleza Kokugcwala: Ukugeleza kokungena kwamanzi okujwayelekile kwehla ngo-10% ~ 15% uma kuqhathaniswa nesisekelo sokuqala.
• Ukwehla Kokucindezela Okwandayo: Ukwehla kwengcindezi phakathi kwezigaba kuyanda kakhulu (isib., ngaphezu kuka-15%, noma ukwehla kwengcindezi yesigaba sokuqala kudlula u-0.25 MPa).
• Ukwenqatshwa Kosawoti Okunciphisayo: Ikhwalithi yamanzi agelezayo iyawohloka, lapho ukudlula kukasawoti okuvamile kukhuphuka ngo-10% ~ 15%.

3. Izixazululo kanye Nezinqubo Zokuhlanza

Isixazululo esiyinhloko sokungcola kwe-membrane yi- Indawo Ehlanzekile (i-CIP), okuhlanganisa kokubili ukuhlanza ngokomzimba namakhemikhali.

Ukuhlanzwa Komzimba

Isetshenziswa kakhulu ukususa izinto ezingcolisayo ebusweni be-membrane (isb., ukungcola okuncane kwezinhlayiya). Kuhilela ukuhlanza ngamanzi ahlanzekile anomfutho ophansi, ageleza ngokushesha, kusetshenziswa amandla okusika amanzi ukuze kuhlanzwe izinto ezingcolisayo. Ukuhlanza okuxubile namanzi omoya kungasetshenziswa futhi ukuthuthukisa umphumela.

Ukuhlanza Amakhemikhali

Ama-chemical agent afanele kumele akhethwe ukuze ajikeleze futhi acwiliswe ngokususelwa kuhlobo oluthile lokungcola:

• Ukulinganisa Okungaphili: Sebenzisa izihlanzi ezine-asidi (isb., 0.2% ~ 1% citric acid noma hydrochloric acid, i-pH elawulwa ku-2-3) ukuze kuncibilikiswe ngempumelelo ama-carbonate nama-metal oxides.
• Ngezinto Ezingokwemvelo, Ama-Colloid, kanye Nokungcola Kwezinto Eziphilayo: Sebenzisa izihlanzi ze-alkaline (isb., i-0.1% ~ 0.5% i-sodium hydroxide ehlanganiswe nama-surfactants noma i-EDTA, i-pH elawulwa ku-10-12) ukuncibilikisa ukungcola okunamathelayo nokukhumula ama-biofilms.
• Ngokungcola Okuhlanganisiwe: Ukuhlanzwa kwe-alkaline kuvame ukwenziwa kuqala ukuze kususwe ukungcola kwezinto eziphilayo/eziphilayo, kulandelwe ukuhlanzwa kwe-acidic ukuze kususwe ukwakheka kwe-inorganic.

Inqubo Yokuhlanza Ejwayelekile

1. Hlanza ngaphambi kokugeza: Vala uhlelo bese uhlanza ngokucindezela okuphansi nge-RO permeate ukuze ukhiphe amanzi okuphakelayo asele kumamojula e-membrane.
2. Ukulungiselela Isixazululo Nokujikeleziswa Kwaso: Lungisa ikhambi lokuhlanza ngesilinganiso esibekiwe. Lipompe ohlelweni ngomfutho ophansi (ngokuvamile ≤0.2~0.3 MPa) kanye nengxenye yesilinganiso sokugeleza kokuhlanza esivamile. Lijikeleze imizuzu engama-30-60.
3. Ukucwilisa: Misa ukujikeleza kwegazi bese uvumela ikhambi lokuhlanza lingene ngaphakathi kwe-membrane isikhathi esithile (isb., lijikeleze imizuzu eyi-10, bese uyeka bese ulifaka emanzini imizuzu emi-5) ukuze uvumele i-ejenti ukuthi ingene ngokuphelele engqimbeni yokungcolisa.
4. Ngemva kokuhlanza: Khipha amanzi esixazululweni sokuhlanza bese uhlanza kahle uhlelo nge-permite kuze kube yilapho i-pH yokungcola ingathathi hlangothi futhi ingenalo igwebu noma iphunga.
5. Ukuqinisekiswa Kokusebenza: Qala kabusha uhlelo ukuze kwenziwe ukuhlolwa okunomfutho ophansi ukuze kubonwe ukuthi ukugeleza kokungena kwamanzi kanye nokwenqatshwa kukasawoti sekubuyele ezingeni elingaphezu kuka-90% wamanani okuqala.

4. Izincomo Zokuvimbela Nokulungisa Okuvamile

• Lungiselela Ukwelashwa Kwangaphambi Kokwelashwa: Thuthukisa izinqubo zangaphambi kokwelashwa ezifana nokujiya, ukuhlunga, kanye nokuthambisa ukuqinisekisa ukuthi amanzi okuphakelayo i-Silt Density Index (SDI) ingaphansi kuka-5, okunciphisa ama-foulants emthonjeni.
• Ukuhlanza Okujwayelekile Komzimba: Uma izimo zivuma, hlanza ukungcola okuphansi, okugeleza kakhulu nsuku zonke. Lokhu kusebenza kangcono kunokulinda ukuthi ukungcola kuqongelelane ngaphambi kokuhlanza ngamakhemikhali.
• Ukulinganisa Okufanele Kwamakhemikhali: Thatha inani elifanele lama-antiscalants, ama-dispersants, kanye nama-biocides akhethekile ngokusekelwe ekhwalithini yamanzi okuphakelayo ukuze uvimbele ukukhula kwamagciwane kanye nokukhula kwawo.
• Ukusebenza Okujwayelekile: Gwema ukulayisha ngokweqile uhlelo. Hlanza uhlelo njalo ngaphambi kokuvala ukuze uvimbele ama-foulants ukuthi angami ebusweni be-membrane.

⚠️ Izinyathelo zokuzivikela: Ungalokothi usebenzise ngokungacabangi amazinga aphezulu ama-asidi aqinile noma ama-alkali, noma wandise izikhathi zokuhlanza, njengoba lokhu kuzodala umonakalo ongenakulungiseka kungqimba olusebenzayo lwe-membrane. Uma ukuhlanza ku-inthanethi kungasebenzi kahle noma ukungcola kukubi kakhulu, cabanga ukususa izakhi ze-membrane ukuze uzihlanze ungaxhunyiwe ku-inthanethi noma uzishintshe ngokuphelele.