25 kev daws teeb meem ntawm kev rov qab osmosis membrane technology (Part 3)

13. Dab tsi yog particle thiab colloid pollution? Yuav ntsuas li cas?

Thaum cov kab mob thiab cov kab mob colloid tshwm sim nyob rau hauv thim rov qab osmosis los yog nanofiltration systems, nws tuaj yeem cuam tshuam rau daim nyias nyias cov dej ntau lawm thiab qee zaum txo tus nqi desalination. Cov tsos mob thaum ntxov ntawm colloidal fouling yog qhov nce hauv qhov sib txawv ntawm qhov sib txawv, thiab cov khoom siv los yog colloids nyob rau hauv daim nyias nyias inlet dej qhov chaw sib txawv los ntawm qhov chaw mus rau qhov chaw, feem ntau suav nrog cov kab mob, sludge, colloidal silicon, hlau corrosion khoom, thiab lwm yam. Cov tshuaj siv nyob rau hauv lub pre-kho qhov chaw, xws li polyaluminum thiab ferric chloride los yog cationic polyelectic yuav ua tau zoo nyob rau hauv cov tshuaj. clarification tank los yog lim nruab nrab. Tsis tas li ntawd, cationic polymeric dielectrics kuj tuaj yeem hnov ​​​​mob nrog anionic scale inhibitors, thiab lawv cov precipitates tuaj yeem kis cov kab mob sib kis. SDI15 yog siv los ntsuas qhov nyiam ntawm cov fouling lossis kev kho ua ntej hauv dej. Thov xa mus rau cov lus qhia ntxaws ntxaws hauv cov tshooj uas cuam tshuam.

14. Ntev npaum li cas yog qhov siab tshaj plaws tso cai kaw yam tsis muaj qhov system flushing?

Yog tias lub kaw lus siv scale inhibitors, thaum dej kub ntawm 20-38 ℃, nws yuav siv li 4 teev; Kwv yees li 8 teev hauv qab 20 ℃; Yog tias lub kaw lus tsis siv scale inhibitors, nws yuav siv li 1 hnub.

15. Yuav ua li cas lub zog noj ntawm daim nyias nyias yuav txo tau?

Tsawg zog noj membrane ntsiab yog txaus, tab sis nws yuav tsum tau muab sau tseg tias lawv desalination tus nqi yog me ntsis qis dua li cov qauv membrane ntsiab.

Nws tuaj yeem dhau los ntawm microfiltration membrane, uas yog siv los tshem tawm cov kab mob, micro flocs, lossis tag nrho cov khib nyiab tshem tawm (TSS). Qhov siab ntawm ob sab ntawm daim nyias nyias yog 1-3 bar

16.Puas rov qab osmosis dej ntshiab system nquag pib thiab nres?

Lub kaw lus membrane yog tsim los ntawm kev ua haujlwm tas mus li, tab sis hauv kev ua haujlwm tiag tiag, yuav muaj qee zaus ntawm kev pib thiab kaw. Thaum lub kaw lus membrane kaw lawm, nws yuav tsum tau siv nws cov dej tsim los yog ua ntej kho cov dej tsim nyog rau cov dej ntws qis los hloov cov dej siab concentration uas muaj cov nplai inhibitors los ntawm cov khoom siv membrane. Kev ntsuas tseem yuav tsum tau coj los tiv thaiv cov dej tawm hauv lub cev thiab kev taw qhia ntawm huab cua, zoo li yog tias cov khoom xau thiab qhuav, nws yuav ua rau tsis tuaj yeem poob ntawm cov dej ntau lawm. Yog tias qhov kev kaw qis dua 24 teev, tsis tas yuav tsum tau ntsuas los tiv thaiv kev loj hlob ntawm microbial. Tab sis yog tias lub sij hawm kaw ntau tshaj li cov kev cai saum toj no, cov kua tiv thaiv yuav tsum tau siv rau kev khaws cia los yog lub sij hawm ntws tawm ntawm daim nyias nyias.

17.Yuav ua li cas txiav txim siab txog kev txhim kho cov dej ntsev sealing rings ntawm daim nyias nyias?

Cov dej ntsev sealing nplhaib ntawm lub membrane caij yuav tsum tau muab ntsia rau ntawm qhov kawg ntawm lub ntsiab lus, nrog rau qhov qhib ntawm lub qhov nkag mus. Thaum lub nkoj siab puv nrog dej, nws qhov qhib (duab ntug) yuav qhib ntxiv, tag nrho cov dej ntws los ntawm cov txheej membrane mus rau sab hauv phab ntsa ntawm lub nkoj siab.

18.Yuav ua li cas tshem tawm silicon ntawm dej?

Silicon nyob rau hauv dej muaj nyob rau hauv ob hom: active silicon (monomeric silicon) thiab colloidal silicon (polysilicon): colloidal silicon tsis muaj cov yam ntxwv ntawm ions, tab sis muaj ib tug kuj loj scale. Colloidal silicon tuaj yeem cuam tshuam los ntawm cov txheej txheem zoo hauv lub cev, xws li rov qab osmosis, thiab cov ntsiab lus ntawm cov dej tuaj yeem raug txo los ntawm coagulation technology, xws li coagulation clarification tanks. Txawm li cas los xij, kev sib cais thev naus laus zis uas tso siab rau cov yam ntxwv ntawm ion, xws li ion pauv resins thiab cov txheej txheem txuas ntxiv electrodeionization (CDI), muaj kev txwv tsis pub muaj txiaj ntsig ntawm kev tshem tawm colloidal silicon.

Qhov loj ntawm activated silicon yog ntau me dua li ntawm colloidal silicon, yog li feem ntau lub cev pom technologies xws li coagulation clarification, pom, thiab huab cua flotation tsis tuaj yeem tshem tawm cov silicon. Cov txheej txheem uas tuaj yeem tshem tawm cov silicon tau zoo suav nrog rov qab osmosis, ion pauv, thiab txuas ntxiv electrodeionization.