Me yasa ya kamata a tsaftace membranes na nanofiltration akai-akai?
Domin 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 fuskar tace membrane, yana haifar da toshe membrane, kuma toshewar dogon lokaci zai 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 nanofiltration membrane 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 ƙarfi mai ƙarfi ba tare da ragowar chlorine da sauran abubuwan da ke da iskar oxygen ba don yin ruwa
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 rarraba 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 aka gyara tare da diamita fiye da inci 6, jagorancin ruwan tsaftacewa dole ne ya zama daidai da na al'ada na gudu don hana abin da ke faruwa daga haifar da "telescope" sabon abu, saboda an shigar da zobe na matsa lamba a cikin jirgin ruwa kawai a cikin ma'auni na ruwa na ƙarshen jirgin ruwa. Hakanan ana bada shawara don kula da wannan batu lokacin tsaftace tsarin ƙananan ƙananan abubuwa.
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 nanofiltration membrane. 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 aka yi amfani da shi, kuma za'a 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 ƙaruwa. Dangane da ma'aunin sulfate, matsalar za ta kasance mai tsanani.
Ƙara antiscalant
Ana iya amfani da masu hana 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 sikelin SiO2 ta hanyar watsawa.
Ƙara guduro mai laushi
Ana iya amfani da Na+z ion don maye gurbin da cire sikelin sikelin kamar Ca2+, Ba2+, da Sr2+ 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