1. Mechanism ntawm Sodium Hypochlorite Disinfection
Sodium hypochlorite yog cov tshuaj chlorine zoo heev - muaj cov tshuaj tua kab mob. Nws cov tshuaj tua kab mob feem ntau suav nrog kev ua ntawm hypochlorous acid, qhov kev txiav txim ntawm nascent oxygen, thiab chlorination. Lub oxidation ntawm hypochlorous acid yog lub ntsiab bactericidal mechanism ntawm chlorine - muaj tshuaj tua kab mob.
chlorine- muaj cov tshuaj tua kab mob tsim cov tshuaj hypochlorous acid hauv dej, uas ua rau cov kab mob protein. Hypochlorous acid tsis tuaj yeem cuam tshuam nrog cov phab ntsa ntawm tes, tab sis kuj, vim nws qhov me me molecular loj thiab tsis muaj nqi, nws tuaj yeem nkag mus rau cov hlwb kom ua rau oxidation lossis rhuav tshem cov phosphate dehydrogenase, ua rau cov cell tuag.
Nws yog ib qho tsim nyog hais tias txawm hais tias cov tshuaj tua kab mob chlorine tau siv dav hauv kev lag luam, ntau cov nroj tsuag dej tau maj mam txo lawv cov tshuaj chlorine vim tias muaj kev nyab xeeb tseem ceeb cuam tshuam nrog nws cov khoom tsim, khaws cia, kev thauj mus los, thiab kev siv.
Hauv qhov sib piv, sodium hypochlorite tshuaj tua kab mob muaj qhov zoo ntawm kev nyab xeeb thiab cov khoom siv yooj yim. Kev siv sodium hypochlorite los hloov cov tshuaj tua kab mob chlorine tau dhau los ua ib qho kev hloov tsis tau.
2. Kev sib piv ntawm Sodium Hypochlorite Dosing Processes
Tam sim no, tshuaj tua kab mob sodium hypochlorite tuaj yeem ua tiav ob txoj hauv kev: ib qho yog los ntawm kev siv lub tshuab hluav taws xob sodium hypochlorite los tsim cov tshuaj sodium hypochlorite hauv online; lwm qhov yog los ntawm kev siv cov tshuaj ua ntej - npaj sodium hypochlorite tov.
Tsis hais txog kev siv tshuaj npaum li cas / qhov system siv, txhua tus muaj nws qhov zoo thiab qhov tsis zoo. Cov nyhuv tshuaj tua kab mob thiab tus nqi ib tuj dej kho los ntawm ob txoj kev tsis sib txawv heev.
Yog li ntawd, nyob rau hauv cov cheeb tsam uas muaj txaus txaus ntawm pre{0}} npaj cov tshuaj (nrog peb los yog ntau tshaj lwm tus neeg ua tau raws li qhov yuav tsum tau), nws raug pom zoo kom siv pre- npaj sodium hypochlorite tov. Txoj kev no muaj cov nqi qis dua kev khiav hauj lwm thiab kev saib xyuas, cov khoom siv luv luv thiab kev tsim kho, thiab tsis muaj kev tshwj xeeb rau kev ua haujlwm niaj hnub thiab kev saib xyuas.
Rau cov chaw kho dej me me, tshwj xeeb tshaj yog nyob rau thaj chaw uas muaj kev thauj mus los tsis yooj yim, nws raug nquahu kom siv lub tshuab hluav taws xob sodium hypochlorite los npaj thiab ntxiv cov tshuaj rau ntawm -site. Qhov no zam qhov kev pheej hmoo ntawm cov tshuaj tua kab mob tsis zoo vim qhov ntev - lub sij hawm cia degradation ntawm cov tshuaj.
3. Sodium Hypochlorite Dosage
Tus nqi ntawm cov tshuaj chlorine ntxiv thaum tua kab mob sib txawv nyob ntawm seb cov dej tsis zoo thiab cov tshuaj tua kab mob yuav tsum tau ua. Txhawm rau kom ua tiav cov txiaj ntsig zoo thiab ntev ntev - cov tshuaj tua kab mob ntev, qhov ntau npaum li cas yuav tsum ua tau raws li ob txoj cai:
1) "Kev xav tau chlorine" siv los tua cov kab mob kom ua tiav cov hom phiaj tshuaj tua kab mob thiab oxidize organic teeb meem.
2) "cov tshuaj chlorine residual" yuav tsum tau inhibit qhov regrowth ntawm cov kab mob residual hauv dej. Cov kev cai ntawm cov tshuaj chlorine residual kuj muab ib txoj hauv kev yooj yim rau kev txiav txim siab npaum li cas thiab txiav txim rau cov tshuaj tua kab mob.
4. Cov yam ntxwv cuam tshuam rau Sodium Hypochlorite
1) Cov nyhuv ntawm Sodium Hypochlorite Dosage ntawm Inactivation Efficacy
Los ntawm kev ntxiv ntau npaum li cas ntawm sodium hypochlorite rau 1L ntawm cov qauv dej thiab reacting rau 30 feeb, cov concentration tau suav nrog cov txheej txheem membrane pom. Cov txiaj ntsig tau pom tias:
Sodium hypochlorite tshuaj tua kab mob muaj txiaj ntsig zoo heev. Ntawm qhov koob tshuaj sodium hypochlorite ntawm 2.5 mg / L, 100% inactivation tau tiav. Txhawm rau ua tiav cov kev cai zoo sib xws li GB18920-2002, qhov kev pom zoo sodium hypochlorite ntau npaum tuaj yeem suav tias yog 2.5–3.0 mg / L.
2) Cov nyhuv pH ntawm Sodium Hypochlorite Disinfection
Ntawm qhov koob tshuaj sodium hypochlorite ntawm 0.5 mg / L, qhov logarithmic inactivation tus nqi ntawm sodium hypochlorite tshuaj tua kab mob txo qis los ntawm 2.03 mus rau 0.27 nrog nce pH, qhia txog kev poob qis.
Qhov no ua rau kev txiav txim siab tias qhov piv ntawm ClO - rau hypochlorous acid hauv dej yog tswj hwm los ntawm pH. Thaum qis pH, qhov feem ntawm hypochlorous acid yog siab dua, ua rau muaj zog bactericidal muaj peev xwm.
3) Cov nyhuv ntawm Ammonia Nitrogen Concentration rau Inactivation Efficacy
Ammonia nitrogen reacts sai nrog sodium hypochlorite, haus nws thiab tsim monochloramine thiab dichloramine. Thaum cov tshuaj chloramine nyob hauv dej, cov tshuaj tua kab mob qeeb qeeb, cuam tshuam ncaj qha rau cov tshuaj sodium hypochlorite thiab inactivation efficiency.
Cov kev tshawb fawb cuam tshuam tau pom tias thaum ammonia nitrogen qib yog 1, 3, 5, 8, 10, thiab 15 mg / L, cov txiaj ntsig ntawm ntau npaum li cas ntawm sodium hypochlorite ntxiv rau 30 feeb ntawm qhov tsis ua haujlwm yog raws li hauv qab no:
Thaum ammonia nitrogen Tsawg dua lossis sib npaug li 15 mg / L thiab sodium hypochlorite ntau npaum li cas tsawg dua lossis sib npaug li 6.0 mg / L, cov nyhuv inactivation ntawm sodium hypochlorite disinfection deteriorates nrog nce ammonia nitrogen theem; Thaum ammonia nitrogen yog 8 mg / L, cov kab mob tsis ua haujlwm tag nrho nrog kev siv tshuaj sodium hypochlorite ntawm 5.0 mg / L.