Tam sim no, muaj ntau lub chaw kho dej hauv Suav teb. Rau cov chaw kho dej phwj niaj hnub no, kev kho dej phwj siv thev naus laus zis feem ntau yog cais raws li qib kev kho mob. Nws yog qhov peb feem ntau xa mus ua thawj, theem nrab thiab qib theem kev kho dej phwj tuaj.
Rau kev kho dej phwj hauv thawj: nws tsuas yog tshem tawm cov khoom paug tawm hauv cov dej phwj tuaj, thiab feem ntau ntawm txoj kev kho lub cev tsuas tuaj yeem ua tiav cov cai ntawm kev kho thawj zaug. Tom qab thawj qhov kev kho dej phwj tuaj, BOD feem ntau tuaj yeem raug tshem tawm li ntawm 30 feem pua, uas tsis ua raws li tus qauv tso tawm. Thawj txoj kev kho mob belongs rau preprocessing ntawm theem nrab kev kho mob.
Rau kev kho dej phwj thib ob: Nws tsuas yog tshem tawm cov pa phem (BOD, COD cov khoom) hauv colloidal thiab yaj lub xeev hauv cov dej phwj tuaj, thiab tus nqi tshem tawm tuaj yeem ncav cuag ntau dua 90 feem pua, kom cov pa phem tuaj yeem ua tau raws li tus qauv tso tawm.
Rau tertiary kev kho mob: ntxiv kev kho mob ntawm refractory organic teeb meem, soluble inorganic teeb meem xws li nitrogen thiab phosphorus uas yuav ua tau rau eutrophication ntawm dej lub cev, thiab lwm yam. Lub ntsiab txoj kev yog lom denitrification thiab phosphorus tshem tawm, coagulation sedimentation txoj kev, xuab zeb tus nqi txoj kev, activated carbon adsorption method, ion exchange method thiab electroosmosis analysis method, thiab lwm yam.
Hauv peb qib rau kev kho cov dej khib nyiab. Tag nrho cov txheej txheem yog tias cov dej phwj nyoos uas dhau los ntawm daim phiaj ntxhib yog nqa los ntawm cov kav dej lifting twj tso kua mis, dhau los ntawm kab sib chaws los yog sieve, thiab tom qab ntawd nkag mus rau hauv grit chamber, thiab cov dej phwj sib cais los ntawm cov xuab zeb thiab dej nkag mus rau hauv lub hauv paus sedimentation tank. . Cov saum toj no yog cov kev kho mob tseem ceeb (xws li kev kho lub cev), cov dej ntws tawm ntawm cov dej hauv lub tank nkag mus rau hauv cov khoom siv tshuaj lom neeg, nrog rau cov txheej txheem activated sludge thiab biofilm txoj kev, (lub reactor ntawm cov txheej txheem activated sludge muaj xws li aeration tank, oxidation ditch, thiab lwm yam. , thiab cov txheej txheem biofilm suav nrog cov lim dej lom neeg, lub tshuab hluav taws xob lom neeg, cov khoom siv hluav taws xob sib txuas oxidation thiab cov khoom siv roj ntsha lom neeg), cov dej ntws tawm los ntawm cov khoom siv tshuaj lom neeg nkag mus rau theem nrab sedimentation tank, thiab cov effluent los ntawm theem nrab sedimentation tank yog tawm tom qab tshuaj tua kab mob los yog nkag mus rau tertiary. kev kho mob. Kev kho mob tseem ceeb suav nrog kev tshem tawm cov tshuaj lom neeg lom neeg thiab phosphorus tshem tawm, coagulation sedimentation, xuab zeb pom, activated carbon adsorption, ion pauv thiab electrodialysis.
Ib feem ntawm cov sludge nyob rau hauv lub sedimentation tank yog xa rov qab mus rau lub thawj sedimentation tank los yog cov khoom siv tshuaj lom neeg, thiab ib feem ntawm nws nkag mus rau hauv lub sludge thickening tank, thiab ces nkag mus rau lub sludge digestion tank. Tom qab dewatering thiab ziab cov cuab yeej, cov sludge yog rov siv dua.