Kutheni i-nanofiltration membranes kufuneka ihlambuluke rhoqo?
Ngenxa yokuba i-nanofiltration inwebu iya kusetyenziswa ixesha elide kwinkqubo yokusetyenziswa, izinto eziqinileyo ezimisiweyo kunye nokungcola okuthile emanzini kuya kuthintela ubungakanani bepore ye-membrane yokucoca umphezulu, okubangela ukuba i-membrane ivalwe, kwaye ukuvalwa kwexesha elide kuya kubangela ukuba ukuveliswa kwamanzi kunciphe, kwaye kuya kuchaphazela i-nanofiltration membrane element. Banga umonakalo ongenakulungiseka.
Kude kube nini umjikelo wokucoca we-nanofiltration membranes?
Ngokuqhelekileyo, umjikelo wokucoca we-nanofiltration membrane umiselwa ngokukodwa ngokusetyenziswa kwe-membrane element, ngokuqhelekileyo malunga neenyanga ezintathu, kodwa xa ukuveliswa kwamanzi kwi-membrane element kuncipha, i-nanofiltration membrane kufuneka icocwe ngexesha.
Yintoni endimele ndiyibeke ingqalelo xa ndicoca i-nanofiltration membrane?
Sebenzisa amanzi odidi oluphezulu angenaklorini eshiyekileyo kunye nezinye ii-oxidants xa ugungxulwa
Xa ulungiselela isisombululo sokucoca, qiniseka ukuba zonke iikhemikhali zokucoca zichithwa kakuhle kwaye zixutywe ngaphambi kokungena kumjikelezo wecandelo.
Emva kokuba iikhemikhali zokucoca kunye nezinto ze-membrane zijikelezwe, izakhi ze-membrane kufuneka zihlanjululwe ngamanzi akumgangatho ophezulu angenayo i-chlorine eseleyo kunye nezinye i-oxidants (ubushushu obuncinane> 20℃).
Ubushushu kunye nexabiso le-PH
Ngethuba lomjikelezo wesisombululo sokucoca, ukushisa akufanele kudlule i-50C kwi-pH 2-10, izinga lokushisa akufanele lidlule i-35C kwi-pH 1-11, kwaye izinga lokushisa akufanele lidlule i-30C kwi-pH 1-12.
Indlela yokuhamba kwamanzi okucoca
Kumacandelo anobubanzi obungaphezulu kwe-intshi ezi-6, isikhokelo sokuhamba kwamanzi okucoca kufuneka sifane nesalathiso esiqhelekileyo sokuhamba ukuthintela icandelo ekuveliseni "i-telescope" isenzeko, kuba i-ring thrust kumkhumbi woxinzelelo ifakwe kuphela ekupheleni kwamanzi agxininiswe kwisitya soxinzelelo. Kukwacetyiswa ukuba ubeke ingqalelo kule ngongoma xa ucoca inkqubo yamacandelo amancinci.
Coca ngokucokisekileyo i-detergent eseleyo
Xa ucoca, nikela ingqalelo ukucoca ngokucokisekileyo i-agent yokucoca esele kwi-membrane. Ukuba i-arhente yokucoca ayicocwanga ngokucokisekileyo, kulula kakhulu ukuqokelela ukungcola kwi-membrane-forming system, kunye nokunciphisa ubomi benkonzo ye-nanofiltration membrane. Abacoci bealkaline banamandla aphantsi okucoca ukususa amabala.
Indlela yokwandisa umjikelezo wokucoca i-nanofiltration membranes?
Yandisa unyango lwangaphambili
Ukwandiswa kwenkqubo yokulungiswa kwangaphambili ngokuqhelekileyo kusetyenziswe ixesha elide, kwaye amanzi akrwada angaphathwa kwangaphambili ngeenkqubo ezifana nezihluzo ze-multi-media kunye ne-ultrafiltration membranes ukuphucula umgangatho wamanzi, onokunciphisa ngokufanelekileyo ukungcoliswa kwezinto ze-nanofiltration membrane.
Yongeza iasidi
I-CaCO3 kumanzi amaninzi aphezu komhlaba nakumanzi aphantsi komhlaba iphantse yahlutha. Ngoko ke, ngokongeza iqabunga le-H kwi-asidi, ibhalansi yeekhemikhali ingatshintshelwa ngakwesobunxele ukuze igcine i-calcium carbonate kwindawo enyibilikileyo. Umgangatho we-asidi esetyenziswayo kufuneka ube yinqanaba lokutya. Kwamazwe amaninzi kunye nemimandla, i-asidi ye-sulfuric kulula ukuyisebenzisa kune-hydrochloric acid, kodwa ngakolunye uhlangothi, umxholo we-sulfate radicals kumanzi anempembelelo yanda. Ngokubhekiselele kwisikali se-sulfate, ingxaki iya kuba yingozi.
Yongeza i-antiscaant
I-Scale inhibitors ingasetyenziselwa ukulawula isikali se-carbonate, isikali se-sulfate, kunye ne-calcium fluoride scale. Ngokuqhelekileyo kukho iintlobo ezintathu ze-scale inhibitors: i-sodium hexametaphosphate (SHMP), i-organic phosphate, kunye ne-polyacrylate. Kufanelekile ukuthintela ukunyuswa kwe-aluminium engaxutywanga kunye nentsimbi, kunye ne-polyacrylate ephezulu ye-molecular weight inokunciphisa ukubunjwa kwe-SiO2 yokulinganisa nge-dispersion effect.
Yongeza i-resin yokuthambisa
I-Na+z ion ingasetyenziselwa ukubuyisela kunye nokususa izilinganiso zesikali ezifana ne-Ca2+, Ba2+, kunye ne-Sr2+ emanzini. Ngeli xesha lonyango, i-pH yamanzi anempembelelo ayiyi kutshintsha. Ngoko ke, akukho msebenzi wokukhupha amanzi ofunekayo.
Ixesha lokuposa: Jun-28-2021