Qhov txawv ntawm Oxidizing thiab Tsis yog -Oxidizing Biocides rau RO Membrane Systems
Biofouling yog ib qho teeb meem tseem ceeb rau thim rov qab osmosis (RO) membrane systems, ua rau kev ua haujlwm poob qis, kev siv hluav taws xob ntau dua, lub neej ua haujlwm luv luv thiab tu ntau zaus. Biocides, muab faib ua oxidizing thiab tsis yog - pawg oxidizing, yog qhov tseem ceeb los tswj kev loj hlob ntawm microbial, thiab lawv qhov sib txawv tseem ceeb cuam tshuam ncaj qha rau RO system stability. Cov nqe lus no qhia txog lawv cov kev sib txawv tseem ceeb hauv 450 lo lus los qhia txog kev lag luam RO ua haujlwm.
1. Action Mechanism
Oxidizing biocides (xws li sodium hypochlorite thiab chlorine dioxide) tshem tawm cov kab mob los ntawm kev muaj zog oxidation, rhuav tshem cell membranes, proteins thiab nucleic acids kom ua kom tsis muaj menyuam sai. Qhov no ceev ceev -kev ua yeeb yam ua rau lawv tsim nyog rau kev tswj hwm thaum muaj xwm txheej ceev ntawm cov kab mob microbial hnyav, tab sis nws tso siab rau cov tshuaj tiv thaiv oxidative uas ua rau muaj kev pheej hmoo rau RO daim nyias nyias.
Tsis yog -oxidizing biocides (xws li isothiazolinones thiab DBNPA) ua haujlwm yam tsis muaj oxidation, nkag mus rau cov kab mob microbial kom cuam tshuam cov metabolism, inhibit enzyme kev ua si thiab thaiv DNA replication, suppressing microbial proliferation es tsis txhob tua tam sim. Lawv hom me me zam kev puas tsuaj rau cov ntaub ntawv membrane, ua kom muaj kev nyab xeeb ntev dua - siv sijhawm.
2. Membrane Compatibility
Feem ntau cov RO daim nyias nyias yog polyamide nyias - zaj duab xis composites, rhiab heev rau oxidants. Lub sijhawm ntev lossis dhau mus rau oxidizing biocides lov polyamide molecular chains, ua rau kev puas tsuaj tsis tuaj yeem: txo ntsev tsis kam, nce permeate flux thiab txawm tias daim nyias nyias tsis ua haujlwm. Cov residual oxidants yuav tsum tau soj ntsuam nruj me ntsis thiab neutralized ua ntej dej nkag mus rau daim nyias nyias.
Tsis yog -oxidizing biocides muaj qhov zoo sib xws nrog polyamide RO daim nyias nyias, tsis muaj oxidative degradation txaus ntshai. Lawv tuaj yeem siv tsis tu ncua yam tsis muaj kev cuam tshuam cov txheej txheem membrane lossis kev sib cais, ua rau lawv qhov kev xaiv zoo tshaj plaws rau kev tswj hwm microbial niaj hnub.
3. Kev ua tau zoo, kev siv & kev ua haujlwm
Oxidizing biocides xa cov dav -spectrum thiab ua kom tsis muaj menyuam sai, tab sis lawv cov txiaj ntsig tau yooj yim neutralized los ntawm cov organic teeb meem thiab tshem tawm cov khib nyiab, ua rau luv luv persistence thiab microbial rebound. Lawv NW nyuam qhuav nkag mus rau cov biofilms paub tab thiab tsuas yog tsim nyog rau kev ua kom tsis haum tshuaj tua kab mob, kev tu offline lossis pretreatment sterilization, nrog kev ua haujlwm nyuaj vim qhov kev xav tau ntawm cov residue neutralization.
Tsis yog -oxidizing biocides ua qeeb qeeb tab sis khav theeb ruaj khov, ntev - ua haujlwm tau ntev, tsis cuam tshuam los ntawm cov organic hauv dej. Lawv tuaj yeem nkag mus rau biofilms los tiv thaiv fouling rov tshwm sim, haum rau kev noj tshuaj online txuas ntxiv lossis tsis tu ncua - kev kho mob poob siab. Tsis tas yuav muaj qhov nruab nrab, ua kom yooj yim rau kev khiav lag luam thiab kev saib xyuas, tshwj xeeb tshaj yog rau cov tshuab uas muaj siab -cov dej pub mis los yog nquag fouling.
Xaus
Zuag qhia tag nrho, oxidizing biocides yog tus nqi - ua tau zoo thiab ceev ceev - ua rau tshuaj tua kab mob xwm txheej ceev, tab sis ua rau muaj kev pheej hmoo ntawm daim nyias nyias thiab kev ua haujlwm nyuaj. Tsis yog -oxidizing biocides yog daim nyias nyias- tus phooj ywg, ruaj thiab yooj yim rau kev khiav lag luam, zoo tagnrho rau niaj hnub RO tiv thaiv - fouling. Ib daim ntawv thov ua ke ntawm ob qho tib si tuaj yeem ua kom muaj txiaj ntsig zoo tshaj plaws, cov nqi sib npaug thiab ua kom ntev RO membrane lifespan.
