Me yasa ya kamata a tsaftace membranes na nanofiltration akai-akai?
Saboda za a yi amfani da membrane na nanofiltration na dogon lokaci a cikin tsarin amfani, daskararru da aka dakatar da wasu ƙazanta a cikin ruwa za su toshe girman pore na farfajiyar membrane na tacewa, yana haifar da toshe membrane, kuma toshewar dogon lokaci zai kasance. sa samar da ruwa ya ragu, kuma zai shafi nau'in nanofiltration membrane.Hana lalacewa mara jurewa.
Yaya tsawon lokacin tsaftacewa na nanofiltration membranes?
Gabaɗaya, tsarin tsaftacewa na membrane na nanofiltration an ƙaddara shi ne bisa ga amfani da nau'in membrane, yawanci kusan watanni uku, amma lokacin da samar da ruwa na ƙwayar membrane ya ragu, dole ne a tsaftace nanofiltration membrane a cikin lokaci.
Menene ya kamata in kula da lokacin tsaftacewa na nanofiltration membrane?
Yi amfani da ruwa mai ƙima mai inganci ba tare da ragowar chlorine da sauran abubuwan da ke da iskar oxygen ba don zubarwa
Lokacin shirya maganin tsaftacewa, tabbatar da cewa duk sinadarai masu tsaftacewa sun narkar da su da kyau kuma sun gauraye kafin shigar da sake zagayowar bangaren.
Bayan an zazzage sinadarai masu tsaftacewa da abubuwan membrane, abubuwan membrane yakamata a wanke su da ruwa mai inganci wanda bai ƙunshi ragowar chlorine da sauran oxidants (mafi ƙarancin zafin jiki> 20 ℃).
Zazzabi da ƙimar PH
A lokacin sake zagayowar maganin tsaftacewa, zafin jiki bai kamata ya wuce 50C a pH 2-10 ba, zafin jiki bai kamata ya wuce 35C a pH 1-11 ba, kuma zafin jiki kada ya wuce 30C a pH 1-12.
Hanyar kwararar ruwa mai tsabta
Don abubuwan da ke da diamita fiye da inci 6, madaidaicin magudanar ruwa dole ne ya zama daidai da na al'ada na gudu don hana abin da ke haifar da al'amuran "telescope", saboda an shigar da zobe na matsa lamba a cikin jirgin ruwa kawai a. Ƙarshen ruwa mai mahimmanci na jirgin ruwa.Hakanan ana ba da shawarar kula da wannan batu lokacin tsaftace tsarin ƙananan sassa.
Tsaftace sauran kayan wanke-wanke sosai
Lokacin tsaftacewa, kula da hankali sosai don tsaftacewa mai tsaftacewa wanda ya rage a cikin membrane.Idan mai tsaftacewa ba a tsaftace shi sosai ba, yana da matukar sauƙi don tara datti a cikin tsarin tsarin membrane, har ma ya rage rayuwar sabis na membrane na nanofiltration.Masu tsabtace alkaline suna da ƙananan ikon tsaftacewa don cire tabo.
Yadda za a mika sake zagayowar tsaftacewa na nanofiltration membranes?
Ƙara pretreatment
Haɓaka tsarin pretreatment gabaɗaya shine mafi dadewa da ake amfani da shi, kuma ana iya tuntuɓar ɗanyen ruwa ta hanyar matakai kamar matattarar kafofin watsa labarai da yawa da ultrafiltration membranes don haɓaka ingancin ruwa, wanda zai iya rage ƙazantar abubuwan nanofiltration da kyau yadda ya kamata.
Ƙara acid
CaCO3 a mafi yawan ruwan saman da ruwan ƙasa ya kusan cika.Sabili da haka, ta ƙara ganyen H a cikin acid, ana iya canza ma'aunin sinadarai zuwa hagu don kiyaye calcium carbonate a cikin yanayin narkar da.Dole ne ingancin acid ɗin da aka yi amfani da shi ya zama darajar abinci.A yawancin ƙasashe da yankuna, sulfuric acid ya fi sauƙi don amfani fiye da hydrochloric acid, amma a gefe guda, abun ciki na sulfate radicals a cikin ruwa mai tasiri yana karuwa.Dangane da ma'aunin sulfate, matsalar za ta kasance mai tsanani.
Ƙara antiscalant
Ana iya amfani da masu hana sikelin sikelin don sarrafa ma'aunin carbonate, sikelin sulfate, da ma'aunin fluoride na calcium.Yawancin masu hana ma'auni guda uku ne: sodium hexametaphosphate (SHMP), Organic phosphate, da polyacrylate.Ya dace don hana sikelin aluminum da baƙin ƙarfe maras narkewa, kuma babban nauyin kwayoyin polyacrylate zai iya rage samuwar SiO2 ta hanyar tasirin watsawa.
Ƙara guduro mai laushi
Ana iya amfani da Na+z ion don maye gurbin da cire sikelin cations kamar Ca2+, Ba2+, da Sr2+ a cikin ruwa.A lokacin wannan jiyya, pH na ruwa mai tasiri ba zai canza ba.Saboda haka, ba a buƙatar aikin cirewa.
Lokacin aikawa: Juni-28-2021