Kev kho dej phwj niaj hnub siv tshuab tuaj yeem muab faib ua thawj, theem nrab thiab theem nrab kev kho mob raws li qib kev kho mob.
1. Kev ua thawj coj
Nws yog tsuas yog tshem tawm cov khoom paug tawm hauv cov dej phwj tuaj. Feem ntau ntawm txoj kev kho lub cev tsuas tuaj yeem ua tiav cov cai ntawm kev kho thawj zaug. Tom qab kev kho thawj zaug, BOD feem ntau tuaj yeem raug tshem tawm li ntawm 30 feem pua, tab sis nws tseem tsis tau raws li tus qauv tso tawm. , yog lub preprocessing ntawm theem nrab ua.
2. Kev ua haujlwm thib ob
Nws yog tsuas yog tshem tawm cov kuab paug organic (BOD, COD tshuaj) nyob rau 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, yog li cov kua paug organic tuaj yeem ua tau raws li tus qauv tso tawm, thiab tus nqi tshem tawm ntawm cov khib nyiab tuaj yeem. mus txog 95 feem pua. Cov nyhuv effluent yog qhov zoo.
3. Kev ua tiav qib siab
Nws yog tsuas yog los kho refractory organic teeb meem, phosphorus, nitrogen thiab lwm yam soluble inorganic teeb meem uas yuav ua rau eutrophication ntawm dej lub cev. Cov txheej txheem tseem ceeb yog txoj kev coagulation sedimentation, biological denitrification thiab phosphorus tshem tawm txoj kev, activated carbon adsorption method, xuab zeb filtration method, electrodialysis method, ion exchange method, etc.