Sludge lub cev qhuav dej yog ib feem tseem ceeb ntawm cov txheej txheem dej phwj. Nws lub hom phiaj yog kom ua kom zoo tshem tawm cov dej hauv sludge, yog li ntawd tus nqi ntawm sludge yog tsawg dua, thiab cov nqi pov tseg thiab thaj av yog txo. Hauv txoj kev no, kev xaiv ntawmFlocculantyog tus yuam sij, thiab polydadmac, raws li kev ua tau zooCationic Polymer Flocculant, yog ua si ib qho tseem ceeb tshaj plaws.
Firstly, peb yuav tsum nkag siab cov muaj pes tsawg leeg thiab cov khoom ntawm sludge. Sludge yog feem ntau yog cov sediment tsim thaum dej phwj. Nws muaj cov txheej txheem nyuaj xws li cov tub rog muaj cov organic, cov pab pawg microbial, inorganic hais thiab colloids. Cov khib nyiab tshem tawm hauv sludge yog tsis zoo them thiab repel rau ib leeg, yog li cov dej tawm ntawm cov sludge tuaj yeem ncav cuag lub sijhawm, nws yuav ua rau theem ob Kev qias neeg rau ib puag ncig. Yog li ntawd, yuav ua li cas thiaj li ua tiav kev ua kom tiav qhov teeb meem dewatering tau dhau los ua qhov teeb meem tseem ceeb hauv kev ua dej phwj tuaj.
Hauv cov txheej txheem dudishing,Flocculants rau sludge dewateringyog qhov tseem ceeb cuam tshuam. Lub flocculant aggregates cov me nyuam quav nyob hauv sludge rau hauv cov khoom nruab nrab los ntawm cov hluav taws xob nruab nrab, thiab lwm yam, nrawm nws cov txheej txheem thiab lub cev qhuav dej. Raws li cov tshuaj chemical tshwj xeeb siv nyob rau hauv kev kho dej kom qhuav thiab sludge lub cev qhuav dej, polydadmac ua tau zoo nyob rau hauv lub cev qhuav dej tsis txaus vim nws cov qauv molecular thiab them nqi.
Cov qauv molecular ntawm Polydadmac muab nws cov nqi siab dua thiab cov adsorption zoo nkauj. Thaum lub sij hawm sludge lub cev muaj sij hawm, polydadmac tuaj yeem tawm ntawm cov npoo ntawm cov khoom nruab nrab, txo cov kev cuam tshuam hluav taws xob, thiab txhawb nqa cov flocs loj ntawm cov khoom. Nyob rau tib lub sijhawm, cov molecular chains ntawm PolyDadmac tseem tuaj yeem tsim cov qauv network zoo, thiab sib sau cov dej uas yooj yim rau lub cev qhuav dej, kom cov dej ntim khoom tuaj yeem txo rau 60-80% lossis qis dua, thiab lub ntim tuaj yeem txo los ntawm 75-87%.
Piv nrog cov tsoos inorganic flocculants, polydadmac muaj qhov hnyav dua molecular thiab them nyiaj ntau dua, muab nws muaj zog flocculation muaj peev xwm. Ntxiv rau,PolydadmacMuaj kev ua tau zoo heev, yog siv tau yooj yim, thiab tsis tsim cov pa phem ob. Pd nws tus kheej tsis tsim cov sedimentation li alum, yog li tus nqi ntxiv rau polydadmac muaj cov kev cia siab rau cov kev cia siab hauv thaj teb ntawm Sludge dewatering.
Cov qauv molecular ntawm Polydadmac muab nws cov nqi siab dua thiab cov adsorption zoo nkauj. Ntau pawg neeg cationic ntawm nws cov molecular yuav muaj kev ntxhov siab nrog pawg Aionic nyob rau ntawm sludge hais los ua cov ntawv cog lus ruaj khov, uas ua rau muaj kev kos npe ruaj khov. Qhov adsorption tsis tsuas pab txo cov tshuaj rov qab nruab nrab ntawm cov me me, tab sis kuj tseem yuav tsim cov flocs loj dua.
Ntxiv nrog rau cov qauv molecular thiab them nqi ntawm polydadmac, nws cov kev xav thiab kev tshuaj thiab ntau npaum li cas kuj cuam tshuam rau cov nyhuv sludge lub cev qhuav dej. Tsis pub dhau qee qhov ntau, raws li kev xav ntawm Polydadmac nce lossis cov koob tshuaj nce, qhov kev ua tau zoo ntawm sludge tuaj yeem txhim kho. Txawm li cas los xij, siab dhau ib qho siab lossis tshuaj noj yuav ua rau cov nyhuv rov qab, uas ua rau muaj kev tiv thaiv hauv plab zom mov. Yog li ntawd, hauv kev thov siv tswv yim, kev soj ntsuam thiab kev ua haujlwm xav tau yuav tsum tau nqa tawm raws li lub lim dej tshwj xeeb los txiav txim siab qhov kev pom zoo polydrmac thiab ntau npaum li cas.
Lub Sijhawm Post: Sep-26-2024