Matambudziko akajairika mukushandiswa kwemaindasitiri reverse osmosis membrane zvikamu

1.Water flux attenuation

Chikonzero: Membrane fouling, organic matter, inorganic matter, suspended solids, microorganisms nezvimwe zvinosvibisa mumvura zvinozoungana zvishoma nezvishoma pamusoro pe membrane, zvichiita membrane fouling layer; Dambudziko rekuyera, uko kuoma kweiyoni mumvura inobatana nemamwe ayoni ari pamusoro pe membrane kugadzira madhipoziti; Membrane kuchembera, sezvo nguva yekushandiswa ichiwedzera, iyo membrane zvinhu inoenda kune imwe nhanho yekuchembera; Mamiriro ekushanda asina kufanira, akadai seyakanyanya kukwira inlet kudzvanywa, yakawandisa yakaderera inlet kuyerera mwero, kana yakanyanya kukwira inlet tembiricha; Kuchenesa kusina kukwana kunogona kukonzera kubviswa kusina kukwana kwezvinosvibisa, zvichiita kuti kuunganidzwa kwezvinosvibisa pamembrane surface zvakare.

Kutonga nzira: Gara uchitarisa kugadzirwa kwemvura uye kunaka kweiyo reverse osmosis system, enzanisa yekutanga uye yazvino kuyerera kwemvura panguva yekushanda; Kana kutarisisa shanduko mukudzvinyirirwa kwehurongwa uye kunyungudika kwemvura kunoitika, sisitimu inogona kuda kudzvanywa kwepamusoro kuchengetedza mwero wekutanga wekugadzira mvura; Kudzikira kwekuyerera kwemvura ye membrane element kunowanzo kuperekedzwa nekuderera kwekubvisa munyu. Kana chiyero chekubvisa munyu chikaonekwa chakadzikira pane kukosha kwekugadzira panguva yekuyedzwa, inogona kunge iri chiratidzo chekuyerera kwemvura attenuation.

Matanho ekupindura: Gara uchenese zvikamu zve membrane uye sarudza zvakakodzera kuchenesa maajenti ekudzoreredza kuchenesa zvinoenderana nerudzi rwekusvibisa; Ita shuwa kuti mamiriro ekushanda e membrane system ari mukati meiyo yakakurudzirwa siyana, dzivirira yakawandisa inlet kudzvanywa uye tembiricha, uye chengetedza yakagadzikana inlet kuyerera mwero; Kutora nzira dzepamusoro dzepretreatment dzakadai sedimentation, filtration, softening, uye kubvisa iron kuderedza mutoro wezvinosvibisa mumvura; Kana iyo mvura inoyerera ye membrane isati yanyatso kudzoreredzwa mushure mekutenderera kwakawanda kwekuchenesa uye paine zviratidzo zvekuchembera kana kukuvadzwa kune membrane zvinhu, kutsiva kwe membrane element kunogona kutariswa.

2.Scaling phenomenon

Chikonzero: Unhu hwemvura hwakanga husina kuongororwa zvizere, zvichiita kuti hurongwa husina musoro hugadziriswe; Kusashandisa zvisina kunaka kana kusakwana dosage ye scale inhibitors; Unhu hwemvura hwakashanduka, uye maitiro ekushanda kwemaitiro haana kugadziriswa panguva yakakodzera.

Gwaro remhinduro: Ita ongororo yakazara yemhando yemvura isati yagadzirwa system; Sarudza inoshanda chiyero inhibitors / dispersants yedosing; Gadzirisa masisitimu ekushandisa panguva yakakodzera kana mhando yemvura ichichinja; Bvisa kana kuderedza maion anokonzera scaling panguva yeprepaat.

3.Oxidation phenomenon

Chikonzero: Yakawandisa yakasara chlorine kana zvimwe oxidizing zvinhu mumvura inopinza ye membrane system.

Gwaro remhinduro: Tora matanho akadai sekuwedzera zvinoderedza maajenti kuti uve nechokwadi chekuti chlorine yasara mumhepo iri pasi pe0.1ppm; Isa ORP/residual chlorine zviridzwa muhurongwa hwekutarisa-chaiyo-nguva kuona kuti oxidizing zvinhu hazvipinde mu membrane element RO system.

4.Telesikopu phenomenon

Chikonzero: Kutadza kutevedzera zvinodiwa panguva yekuisa kana disassembly kwakaguma nekusawirirana pakati pe reverse osmosis membranes; Kusakwana kusimba uye simba re membrane shell yakakonzera deformation panguva yekumanikidzwa kushanda; Paunenge uchitanga iyo yepamusoro-yekumanikidza pombi, iyo inlet yekumanikidza system inosimuka nekukurumidza.

Gwaro remhinduro: Simbisa kurekodha uye kuongororwa kwedata rekushandisa. Mushure mekumisikidzwa kwedata, kana mutsauko wekumanikidza unopfuura 15% yekukosha kwekutanga, kuchenesa kemikari kunofanirwa kuitwa panguva yakakodzera, uye kutarisisa kunofanirwa kubhadharwa kuti kusapfuure yakakwira inobvumidzwa yekumanikidza musiyano. Pakangoitika chiitiko cheteresikopu chakakomba, zvinodikanwa kutsiva iyo yakakuvadzwa membrane nhengo uye kuongorora chikonzero chekumanikidza musiyano unopfuura mwero.

5.Concentration polarization phenomenon

Chikonzero: Munguva yereverse osmosis process, nekuda kwekuenderera kwekufamba kwemvura kuburikidza ne membrane, pane mutsauko wepakati pakati pemvura yemunyu padyo ne membrane pamusoro uye inopinza munyu. Iko kusungirirwa kwechigadziro pane membrane pamusoro pepamusoro, uye sezvo mvura yakawanda inopfuura nepakati pe membrane, iyo inowedzera zvakanyanya, ichigadzira supersaturated solution. Mimwe munyu inodonha zvishoma nezvishoma makristasi.

Gwaro remhinduro: Wedzera kuyerera kwemvura yakadzika uye kuwedzera simba reshear pane membrane pamusoro; Dzora chiyero chekudzoreredza uye system avhareji flux.

6.Compaction phenomenon

Chikonzero: High inlet pressure, kupisa kwepamusoro, sando yemvura. Kana paine mweya mune reverse osmosis system, iyo yakanyanya-kudzvanywa pombi inotangwa. Kudzvanywa kwepombi yepamusoro-yekumanikidza inokwira nekukurumidza, izvo zvinogona kukonzera simba rakasimba rekuita pane RO membrane, zvichikonzera nyundo yemvura mhedzisiro uye kukuvara kuri nyore kune reverse osmosis membrane.

Gwaro remhinduro: Mushure mekunge iyo membrane element yakamanikidzwa, iyo yakakanganiswa membrane element inoda kutsiviwa; Dzora kudzvanywa kwekushanda uye tembiricha ye membrane element mukati mezvinodiwa zvekugadzira.

7.Membrane pamusoro kukuvara

Chikonzero: Particulate nyaya mumvura inouya inopinda muRO system, inokonzera scratches pamusoro pe membrane; Kukwenya kunokonzerwa nekuyera zvinhu; Sando yemvura; Kemikari zvinhu zvinogona kukonzera kukanganisa kune membrane pamusoro.

Gwaro remhinduro: Tsiva chinhu chekuchengetedza sefa panguva yakakodzera kudzivirira zvimedu zvakaoma mumvura kuti zvipinde mu membrane element; Paunenge uchichenesa fouling membrane zvikamu, yekutanga kuyerera kunofanirwa kuderedzwa kudzivirira kukuvadzwa kunokonzerwa nekuyerera kwakanyanya kuyerera; Kuti udzivise nyundo yemvura, kupera kwepasi kunofanira kuitwa kusati kwatanga pombi yepamusoro-soro, uye kukwira kwepombi yepamusoro-soro haifaniri kunge yakakurumidza. Variable frequency, soft start kana yemagetsi inononoka kuvhura vharuvhu inofanirwa kushandiswa kutanga iyo yepamusoro-pressure pombi; Dzivirira makemikari asingaenderane kubva kupinda mu membrane system.