{"id":1049,"date":"2026-06-04T10:13:58","date_gmt":"2026-06-04T02:13:58","guid":{"rendered":"https:\/\/www.nolletfilter.com\/?p=1049"},"modified":"2026-06-04T10:15:19","modified_gmt":"2026-06-04T02:15:19","slug":"are-you-maintaining-and-cleaning-your-ultrafiltration-membranes-the-right-way","status":"publish","type":"post","link":"https:\/\/www.nolletfilter.com\/ro\/are-you-maintaining-and-cleaning-your-ultrafiltration-membranes-the-right-way\/","title":{"rendered":"P\u0103stra\u021bi \u0219i cur\u0103\u021ba\u021bi membranele de ultrafiltrare \u00een modul corect?"},"content":{"rendered":"

De la construc\u021bia conductelor \u0219i tratarea apelor reziduale p\u00e2n\u0103 la centralele termice \u0219i fabricile chimice, membranele de ultrafiltrare (UF)<\/a><\/span> sunt peste tot. Func\u021bion\u00e2nd ca un \u201esuper-siha\u201d, ele blocheaz\u0103 cu precizie bacteriile, coloidurile \u0219i particulele din ap\u0103, juc\u00e2nd un rol vital \u00een produc\u021bia industrial\u0103 \u0219i protec\u021bia mediului.<\/p>\n

\"\"<\/p>\n

Totu\u0219i, mul\u021bi trec cu vederea un fapt esen\u021bial: membranele UF se pot \u201eobosi\u201d \u0219i au nevoie de o \u201ecur\u0103\u021bare\u201d \u0219i \u201e\u00eengrijire\u201d regulat\u0103.<\/p>\n

F\u0103r\u0103 men\u021binerea \u0219i cur\u0103\u021barea corespunz\u0103toare, chiar cele mai bune membrane pot s\u0103 se obtureze, s\u0103 se strice sau s\u0103 cedeze \u2014 ceea ce duce la o calitate sc\u0103zut\u0103 a apei \u0219i la costuri mari de operare. Atunci, cum po\u021bi men\u021bine membranele UF \u00een condi\u021bii optimale? Ast\u0103zi, v\u0103 vom prezenta procedurile standard pentru \u00eentre\u021binerea \u0219i cur\u0103\u021barea membranelor UF.<\/p>\n

1. \u00centre\u021binerea \u00een trei etape: Faze diferite, reguli diferite<\/strong><\/h2>\n

Membranele UF nu sunt dispozitive \u201einstaleaz\u0103 \u0219i ui\u021bi\u201d. \u00centre\u021binerea lor trebuie adaptat\u0103 mediului de func\u021bionare \u0219i etapei de operare. Expertii \u00eempart de obicei ciclul de via\u021b\u0103 \u00een trei faze: pornirea ini\u021bial\u0103, opera\u021bia pe termen lung \u0219i oprirea.<\/p>\n

a) Prima pornire sau restart: Nu gr\u0103bi\u021bi la sarcina maxim\u0103<\/strong><\/h3>\n

C\u00e2nd cump\u0103ra\u021bi o ma\u0219in\u0103 nou\u0103, dealerul v\u0103 spune: \u201eNu ap\u0103sa\u021bi pedala de accelera\u021bie \u2013 rula\u021bi-o \u00eent\u00e2i.\u201d Acela\u0219i lucru se aplic\u0103 membranelor UF.<\/p>\n

    \n
  • D\u0103-i un sp\u0103l\u0103tura<\/strong>: \u00cenainte de prima utilizare sau dup\u0103 o oprire lung\u0103, cl\u0103ti\u021bi sistemul cu ap\u0103 curat\u0103 timp de c\u00e2teva ore pentru a elimina depozitele interne.<\/li>\n
  • Controleaz\u0103 debitul de ie\u0219ire<\/strong>: Seta\u021bi debitul ini\u021bial de permeat la aproximativ 60% din capacitatea proiectat\u0103. Dup\u0103 24 de ore de func\u021bionare, cre\u0219te\u021bi treptat la sarcina maxim\u0103.<\/li>\n
  • \u021aine\u021bi cont de temperatur\u0103<\/strong>: Men\u021bine\u021bi temperatura apei de alimentare \u00een jur de 20\u00b0C (68\u00b0F).<\/li>\n<\/ul>\n

    Aceste pa\u0219i \u201econservatori\u201d influen\u021beaz\u0103 direct durata de via\u021b\u0103 a membranei \u0219i rezultatele voastre financiare. O rodare corespunz\u0103toare evit\u0103 probleme ulterioare.<\/p>\n

    b) Opera\u021bia pe termen lung: Controleaz\u0103 calitatea apei de alimentare \u0219i frecven\u021ba sp\u0103l\u0103rii inversate<\/strong><\/h3>\n

    Pentru o performan\u021b\u0103 stabil\u0103 pe termen lung, calitatea apei de alimentare este esen\u021bial\u0103.<\/p>\n

      \n
    • Surse acceptabile<\/strong>: Ap\u0103 de la robinet, ap\u0103 subteran\u0103, ap\u0103 de suprafa\u021b\u0103, ap\u0103 marin\u0103, chiar \u0219i ape reziduale conform standardelor na\u021bionale de evacuare de grad II.<\/li>\n
    • Limite<\/strong>: Temperatura apei nu trebuie s\u0103 dep\u0103\u0219easc\u0103 40\u00b0C (104\u00b0F); pH-ul trebuie s\u0103 fie \u00eentre 2 \u0219i 10.<\/li>\n
    • Nu s\u0103ri\u021bi sp\u0103larea inversat\u0103<\/strong>: Sp\u0103larea inversat\u0103 are loc de obicei de 24\u201348 de ori pe zi, la fiecare 30\u201360 de minute. C\u00e2nd observa\u021bi o sc\u0103dere a fluxului membranei, efectua\u021bi imediat cur\u0103\u021barea chimic\u0103.<\/li>\n<\/ul>\n

      c) Oprirea: Aten\u021bie la uscarea \u0219i dezvoltarea biologic\u0103<\/strong><\/h3>\n

      Mul\u021bi presupun c\u0103 oprirea echipamentului \u00eenseamn\u0103 c\u0103 nu mai e nevoie de \u00eengrijire. Aceasta e o gre\u0219eal\u0103 mare. Dac\u0103 o membran\u0103 UF se usuc\u0103, apar daune ireversibile.<\/p>\n

        \n
      • Oprirea pe termen scurt (2\u20133 zile)<\/strong>: Nu opri\u021bi complet sistemul. Pute\u021bi l\u0103sa sistemul \u00een func\u021biune 30\u201360 de minute zilnic pentru a preveni colonizarea bacteriilor.<\/li>\n
      • Oprirea pe termen lung (7+ zile)<\/strong>: \u00cenainte de oprire, efectua\u021bi o sp\u0103lare complet\u0103 aer-ap\u0103. Apoi umple\u021bi unitatea cu o solu\u021bie de conservare (de obicei 1% sodiu bisulfit) \u0219i \u00eenchide\u021bi toate valvele de intrare\/ie\u0219ire. Verifica\u021bi pH-ul solu\u021biei lunar \u2014 dac\u0103 scade sub 3, \u00eenlocui\u021bi-o.<\/li>\n
      • Re\u00eenceperea<\/strong>: Cl\u0103ti\u021bi continuu p\u00e2n\u0103 c\u00e2nd apa de evacuare nu mai face spum\u0103.<\/li>\n<\/ul>\n

        Aminti\u021bi-v\u0103 o regul\u0103 de aur: men\u021bine\u021bi membranele UF umede \u00een permanen\u021b\u0103. O membran\u0103 uscat\u0103 nu mai poate fi salvat\u0103.<\/p>\n

        2. Cur\u0103\u021barea nu e o treab\u0103 de o singur\u0103 dat\u0103: Cur\u0103\u021barea fizic\u0103 + chimic\u0103 e calea<\/strong><\/h2>\n

        Cur\u0103\u021barea membranele UF e ca \u0219i cum ai sp\u0103la o c\u0103ma\u0219\u0103 luxoas\u0103 din m\u0103tase \u2014 for\u021ba brut\u0103 nu va func\u021biona; ave\u021bi nevoie de metodele potrivite.<\/p>\n

        Cur\u0103\u021barea fizic\u0103: Folosirea for\u021bei mecanice pentru a scoate murd\u0103ria<\/strong><\/h3>\n

        Cur\u0103\u021barea fizic\u0103 nu folose\u0219te chimicale \u2014 doar ac\u021biunea mecanic\u0103 a apei \u0219i aerului pentru a elibera contaminan\u021bii.<\/p>\n

          \n
        • Sp\u0103lare \u00eenainte<\/strong>: Deschide\u021bi complet valvula concentratului, \u00eenchide\u021bi valvula permeatului \u0219i cl\u0103ti\u021bi timp de 3\u201310 minute.<\/li>\n
        • Sp\u0103lare inversat\u0103<\/strong>: Inversa\u021bi cur\u0103\u021barea cu ap\u0103 de la partea de permeat spre partea de alimentare pentru a elibera particulele prinses \u00een pori.<\/li>\n
        • M\u0103turare<\/strong>: Imersa\u021bi modulul de membran\u0103 \u00een ap\u0103 curat\u0103 sau \u00eentr-o solu\u021bie de cur\u0103\u021bare pentru a amolo\u0219i \u0219i elibera contaminan\u021bii.<\/li>\n
        • Sp\u0103lare aer-ap\u0103 (cea mai eficient\u0103)<\/strong>: Injecta\u021bi aer comprimat \u00een timpul sp\u0103l\u0103rii inversate. Acest lucru face fibrele goale s\u0103 se mi\u0219te \u0219i s\u0103 se frece una de alta, elimin\u00e2nd contaminan\u021bii rezisten\u021bi.<\/li>\n<\/ul>\n

          Cur\u0103\u021barea chimic\u0103: Solu\u021bii care dizolv\u0103 depunerile dure<\/strong><\/h3>\n

          C\u00e2nd cur\u0103\u021barea fizic\u0103 nu e suficient\u0103, chema\u021bi \u201eechipa chimic\u0103\u201d. De obicei, cur\u0103\u021barea chimic\u0103 e necesar\u0103 la fiecare 3\u20135 s\u0103pt\u0103m\u00e2ni.<\/p>\n

            \n
          • Pentru contaminarea microbial\u0103<\/strong>: Folosi\u021bi o solu\u021bie de hipoclorit de sodiu de 300\u20133.000 ppm timp de 40\u201360 de minute.<\/li>\n
          • Pentru contaminarea organic\u0103<\/strong>: Folosi\u021bi o solu\u021bie de hidroxid de sodiu de 0,1%\u20130,2%. Circula\u021bi la presiune sc\u0103zut\u0103 timp de 20 de minute, apoi l\u0103sa\u021bi s\u0103 macereze 20\u201340 de minute, urmat\u0103 de cl\u0103tire cu ap\u0103 p\u00e2n\u0103 la neutralitate.<\/li>\n
          • Pentru stratificarea anorganic\u0103<\/strong>: Folosi\u021bi o solu\u021bie acid\u0103 sau de sare de sodiu EDTA.<\/li>\n<\/ul>\n

            Un amintire special\u0103: alcalii solidi trebuie s\u0103 fie complet dizolva\u021bi \u00eenainte de prepararea solu\u021biilor de cur\u0103\u021bare \u2014 nu lua\u021bi niciodat\u0103 scurt\u0103turi.<\/p>\n

            \"\"<\/p>\n

            Concluzie: Trata\u021bi bine membranele UF \u2014 merit\u0103 efortul<\/strong><\/h2>\n

            Membranele UF nu sunt consumabile de unic\u0103 folosin\u021b\u0103. O \u00eentre\u021binere \u0219i cur\u0103\u021bare \u0219tiin\u021bific\u0103 nu numai c\u0103 le men\u021bine \u00een func\u021bionare eficient\u0103 pe termen lung, dar reduce semnificativ frecven\u021ba \u00eenlocuirii \u0219i costurile de operare.<\/p>\n

            Fie \u00een contexte industriale, cum ar fi centralele termice \u0219i fabricile chimice, fie \u00een tratarea apelor reziduale municipale, urm\u00e2nd principiul \u201e\u00eentre\u021binere pe faze + cur\u0103\u021bare fizic\u0103 \u0219i chimic\u0103\u201d deschide\u021bi \u00eentregul valoare social\u0103 \u0219i economic\u0103 a membranele UF.<\/p>\n

            Deci, i-a\u021bi dat membranele UF \u201ebaia potrivit\u0103\u201d ast\u0103zi?<\/p>","protected":false},"excerpt":{"rendered":"

            Men\u021binerea \u0219i cur\u0103\u021barea corespunz\u0103toare a membranei de ultrafiltrare \u2014 inclusiv opera\u021biunea \u00een etape, sp\u0103larea fizic\u0103 \u0219i cur\u0103\u021barea chimic\u0103 \u2014 asigur\u0103 o performan\u021b\u0103 stabil\u0103, o durat\u0103 de via\u021b\u0103 mai lung\u0103 \u0219i costuri de operare mai sc\u0103zute \u00een sistemele industriale de tratare a apei.<\/p>","protected":false},"author":1,"featured_media":1051,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[34],"tags":[],"class_list":["post-1049","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-company-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.nolletfilter.com\/ro\/wp-json\/wp\/v2\/posts\/1049","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nolletfilter.com\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nolletfilter.com\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nolletfilter.com\/ro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nolletfilter.com\/ro\/wp-json\/wp\/v2\/comments?post=1049"}],"version-history":[{"count":0,"href":"https:\/\/www.nolletfilter.com\/ro\/wp-json\/wp\/v2\/posts\/1049\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nolletfilter.com\/ro\/wp-json\/wp\/v2\/media\/1051"}],"wp:attachment":[{"href":"https:\/\/www.nolletfilter.com\/ro\/wp-json\/wp\/v2\/media?parent=1049"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nolletfilter.com\/ro\/wp-json\/wp\/v2\/categories?post=1049"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nolletfilter.com\/ro\/wp-json\/wp\/v2\/tags?post=1049"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}