Zvinokonzera uye Mhinduro dzeReverse Osmosis Membrane Fouling

1. Zvikonzero Zvikuru zveRO Membrane Fouling

Zvichienderana nezvinosvibisa, RO membrane fouling inonyanya kuiswa muzvikamu zvina:

• Kuyera Zvisina Kugadzirwa (Kusvibisa Makemikari): Munguva yekuwanda kweRO, munyu unonyunguduka zvishoma wakadai secalcium, magnesium, carbonates, sulfates, uye silicates mumvura inodyisa mvura unopfuura miganhu yekunyunguduka kwayo. Unogomarara wogara pamusoro pemembrane, zvichiita kuti pave nechikamu chakaoma.
• Kusvibisa Kwemuviri Uye KweColloidal (Kusvibisa Kwemuviri): Zvinhu zvakasikwa (semuenzaniso, humic acid), mafuta, ma surfactants, kana zvidimbu zvakabviswa zvisina kukwana uye ma colloid mumvura yekudyisa zvinonamatira pamusoro pe membrane. Izvi zvinoumba ganda rine tsvina rinovhara maburi e membrane chete asiwo rinonwisa zvimwe tsvina.
• Kusvibisa Kwemhuka (Kusvibisa Kwekubereka): Kana mushonga wekuuraya utachiona mumvura yekudyira usina kukwana, tupukanana twakadai semabhakitiriya, fungi, uye algae tunowanda nekukurumidza pamusoro pemembrane. Tunoumba biofilm yakasimba uye tunoburitsa metabolites dzinogona kukanganisa zvinhu zvemembrane.
• Kusvibisa Zvidimbu (Kusvibisa Muviri): Zvidimbu zvakasimba zvakasungirirwa zvakaita sejecha nengura mumvura yekudyisa zvinowanzopinda musystem nekuda kwekusagadziriswa zvakanaka kana kutadza kushanda zvakanaka. Zvinogara pamusoro pemembrane kana panzvimbo dzinosangana nemidziyo yekudyisa.

2. Maitiro Ekuona Kana Kuchenesa Kunodiwa

Kuchenesa kunowanzo diwa kana sisitimu iine zvinotevera:

• Kuderera kweKuyerera kwemvura: Kuyerera kwemvura inoyerera zvakajairwa kunoderera ne10% ~ 15% zvichienzaniswa nepakutanga.
• Kuderera Kwekumanikidzwa: Kuderera kwedzvinyiriro pakati pezvikamu kunowedzera zvakanyanya (semuenzaniso, neanopfuura 15%, kana kuderera kwedzvinyiriro padanho rekutanga kunodarika 0.25 MPa).
• Kurambwa Kwemunyu Kuderera: Hunhu hwemvura inoyerera hunoderera, uye munyu wakajairika unowedzera ne10% ~ 15%.

3. Mhinduro uye Maitiro Ekuchenesa

Mhinduro huru yekusvibisa membrane ndeye Kuchenesa-Munzvimbo (CIP), izvo zvinosanganisira kuchenesa kwemuviri uye kwemakemikari.

Kuchenesa Muviri

Inonyanya kushandiswa kubvisa zvinhu zvinosvibisa zvakabuda pachena pamusoro peganda (semuenzaniso, kusvibisa zvinyoro nyoro). Izvi zvinosanganisira kusukwa nemvura yakachena ine simba shoma, inoyerera nekukurumidza, uchishandisa simba rekuchenesa re hydraulic kubvisa zvinhu zvinosvibisa. Kuchenesa kwakasanganiswa nemvura nemhepo kunogona kushandiswawo kuwedzera simba racho.

Kuchenesa Makemikoro

Mishonga yakakodzera inofanira kusarudzwa kuti ifambe zvakanaka uye inyikwe zvichibva pamhando chaiyo yekusvibisa:

• Pakuyera Zvisina Kugadzirwa: Shandisa mishonga yekuchenesa ine acid (semuenzaniso, 0.2% ~ 1% citric acid kana hydrochloric acid, pH inodzorwa pa2-3) kuti inyatsonyungudutsa carbonates uye metal oxides.
• Zvezvinhu zveOrganics, Colloids, uye Biological Fouling: Shandisa mishonga yekuchenesa alkaline (semuenzaniso, 0.1% ~ 0.5% sodium hydroxide yakasanganiswa nema surfactants kana EDTA, pH inodzorwa pa10-12) kunyungudutsa tsvina inonamira uye kubvisa biofilms.
• Pakusvibisa Composite: Kuchenesa alkaline kunowanzoitwa kutanga kubvisa tsvina yeorganic/biological, kwozoteverwa nekuchenesa acidic kubvisa inorganic scaling.

Maitiro Ekuchenesa Akajairwa

1. Sukurudza usati wageza: Dzima sisitimu woisuka nemhepo ine simba shoma uchishandisa RO permeate kuti ubvise mvura yasara kubva muma membrane modules.
2. Kugadzirira Mhinduro & Kutenderera: Gadzirira mushonga wekuchenesa nechiyero chakatarwa. Pomba musystem nepressure yakaderera (kazhinji ≤0.2~0.3 MPa) uye nehafu yehuwandu hwemvura yekuchenesa yakajairika. Tevedzera kwemaminitsi makumi matatu kusvika makumi matanhatu.
3. Kunyikisa: Mira kutenderera kweropa wosiya mushonga wekuchenesa uchinyura mukati meganda kwenguva yakati (semuenzaniso, tenderera kwemaminitsi gumi, wozomira wonyika kwemaminitsi mashanu) kuti mushonga upinde zvizere muchikamu chekusvibisa.
4. Mushure mekusuka: Dururira mvura mumudziyo wekuchenesa wobva wageza mvura zvakanaka kusvika pH yetsvina yapera uye isina furo kana hwema.
5. Kusimbiswa Kwekushanda: Tangazve sisitimu kuti uedze ne pressure shoma kuti uone kana kuyerera kwemvura uye kurambwa kwemunyu kwadzoka kusvika pa 90% yehuwandu hwekutanga.

4. Kudzivirira uye Kugadzirisa Nguva Dzose

• Gadzirisa Kurapa Kwepamberi: Vandudza maitiro ekurapa usati watanga akadai sekukombama, kusefa, uye kupfavisa kuitira kuti mvura yekudyisa ive neSilt Density Index (SDI) iri pasi pe5, zvichideredza tsvina inobva panobva mvura.
• Kugeza muviri nguva dzose: Kana mamiriro ezvinhu achibvumira, gezai mvura muchina muchishandisa simba shoma uye muchina wemvura yakawanda zuva nezuva. Izvi zvinoshanda kupfuura kumirira kuti tsvina iungane musati mageza makemikari.
• Kuyera Kwakakodzera Kemikari: Isa huwandu hwakakodzera hwemishonga inorwisa scalar, mishonga inoparadzira zvipembenene, uye mishonga yekuuraya utachiona yakavakirwa pamhando yemvura inodyiwa kuti udzivise kukura kwezvipembenene.
• Kushanda Kwakajairwa: Dzivisa kuremedza system. Gara uchigeza system usati wadzima kudzivirira kuti zvinhu zvinosvibisa zvisamire pamusoro pe membrane.

⚠️ Zvekungwaririra: Usambofa wakashandisa acid yakawanda kana alkalis zvisina kujeka, kana kuwedzera nguva yekuchenesa, sezvo izvi zvichikonzera kukuvara kusingagadzirisiki kune membrane iri kushanda. Kana kuchenesa online kusingashande kana kusvibisa kwakanyanya, funga kubvisa zvinhu zvemembrane kuti uchenese offline kana kuzvitsiva zvachose.