Cov lim dej lim dej feem ntau yog siv ua ke nrog quartz xuab zeb lim. Tsis muaj qhov sib txawv tseem ceeb ntawm lub tank lub cev thiab cov quartz xuab zeb lim. Cov cuab yeej siv dej sab hauv thiab cov kav dej hauv lub cev tseem ceeb yuav tsum ua kom tau raws li qhov xav tau ntawm kev siv.
Cov pa roj carbon lim dej muaj ob txoj haujlwm: (1) Siv lub ntsej muag ntawm cov pa roj carbon activated kom tshem tawm cov chlorine dawb hauv dej, kom tsis txhob muaj cov tshuaj chlorination ntawm ion txauv resin, tshwj xeeb tshaj yog cov cation txauv resin hauv cov tshuaj tua kab mob, los ntawm cov tshuaj dawb chlorine. (2) Tshem tawm cov organic teeb meem hauv dej, xws li humic acid, thiab lwm yam., kom txo tau cov pa phem ntawm cov khoom siv hluav taws xob muaj zog los ntawm cov khoom siv organic. Raws li kev txheeb cais, los ntawm cov lim dej lim dej, 60 feem pua mus rau 80 feem pua ntawm cov tshuaj colloidal, li 50 feem pua ntawm cov hlau thiab 50 feem pua rau 60 feem pua ntawm cov organic tshuaj tuaj yeem raug tshem tawm ntawm dej.
Hauv kev ua haujlwm tiag tiag ntawm cov lim dej lim dej lim dej, qhov turbidity ntawm cov dej nkag mus rau hauv txaj, lub voj voog rov qab, thiab lub zog rov qab yog qhov tseem ceeb.
(1) turbidity ntawm dej nkag mus rau hauv txaj:
Qhov siab turbidity ntawm cov dej nkag mus rau hauv lub txaj yuav coj ntau impurities mus rau activated carbon lim txheej. Cov impurities no tau daig rau hauv cov txheej lim dej ua kom muaj pa, thiab thaiv qhov sib txawv ntawm cov lim dej thiab qhov chaw ntawm cov pa roj carbon activated, cuam tshuam nws cov nyhuv adsorption. Tom qab ua haujlwm ntev -, lub retentate yuav nyob nruab nrab ntawm cov activated carbon lim txheej, tsim cov av nkos zaj duab xis uas tsis tuaj yeem ntxuav tawm, ua rau cov pa roj carbon activated muaj hnub nyoog thiab ua tsis tiav. Yog li ntawd, nws yog qhov zoo tshaj plaws los tswj cov turbidity ntawm cov dej nkag mus rau hauv lub tshuab lim dej hauv qab 5ntu kom ntseeg tau tias nws ua haujlwm li qub.
(2) Lub voj voog rov qab:
Qhov ntev ntawm lub voj voog rov qab yog qhov tseem ceeb cuam tshuam txog qhov zoo ntawm cov lim dej. Yog tias lub voj voog rov qab rov qab luv dhau, cov dej rov qab yuav raug pov tseg; Yog tias lub voj voog rov qab mus ntev dhau lawm, cov nyhuv adsorption ntawm cov pa roj carbon activated yuav raug cuam tshuam. Feem ntau hais lus, thaum lub turbidity ntawm cov dej nkag mus rau hauv lub txaj qis dua 5ntu, nws yuav tsum tau rov qab ntxuav ib zaug txhua 45 hnub.
(3) Backwash siv:
Thaum lub sij hawm thim rov qab ntawm cov lim dej lim dej, qhov nthuav dav ntawm cov txheej lim dej muaj qhov cuam tshuam zoo rau seb cov lim txheej puas tau ntxuav tag. Yog tias qhov nthuav dav ntawm cov txheej lim me me dhau lawm, cov pa roj carbon activated hauv cov txheej txheem qis tsis tuaj yeem raug ncua, thiab nws qhov chaw tsis tuaj yeem ntxuav kom huv. Hauv kev ua haujlwm, tus tswj kev nthuav dav dav dav yog 40 feem pua 50 feem pua. (4) Lub sijhawm ntxuav:
Generally, when the expansion rate of the filter layer is 40 percent 50 percent and the recoil strength is 1315l/(㎡·s), the backwash time of the activated carbon filter is 810min.
