Nrog rau txoj kev loj hlob sai ntawm industrialization thiab nroog loj, teeb meem ib puag ncig yog qhov hnyav zuj zus, tshwj xeeb tshaj yog cov pa phem thiab kev tswj xyuas cov peev txheej dej, uas tau nyiam thoob plaws ntiaj teb. Raws li ib qho tseem ceeb ntawm cov tshuaj kho dej, flocculant tau qhia nws qhov tshwj xeeb ntxim nyiam thiab siv dav hauv kev tiv thaiv ib puag ncig.
Flocculant, ib yam tshuaj uas ua rau raug tshem tawm lossis colloidal hais hauv dej kom sib sau ua ke los ua pawg loj. Lawv tuaj yeem tshem tawm impurities hauv dej thiab txhim kho cov dej zoo los ntawm cov txheej txheem ntawm hluav taws xob nruab nrab, tus choj adsorption, net cheb thiab lwm yam. Hauv kev tiv thaiv ib puag ncig, daim ntawv thov ntawm flocculants yog qhov tseem ceeb hauv cov hauv qab no:
Flocculants ua lub luag haujlwm tseem ceeb hauv kev kho dej phwj tuaj.Cov dej phwj hauv nroog muaj ntau cov teeb meem raug tshem tawm, cov khoom siv organic, cov hlau hnyav ions thiab lwm yam kuab paug, uas yuav ua rau muaj kev puas tsuaj loj rau ecosystem thaum tso tawm ncaj qha rau hauv ib puag ncig. Los ntawm kev ntxiv flocculants rau cov dej khib nyiab, cov pa phem no tuaj yeem sib sau ua ke hauv cov khoom loj dua, thiab tom qab ntawd sib cais los ntawm cov dej los ntawm nag lossis daus, lim thiab lwm yam txheej txheem kom ua tiav cov dej huv. SivPoly Aluminium Chloride (PAC)Raws li inorganic flocculant nrog cov organic flocculant xws li Polyacrylamide (PAM) tuaj yeem txhim kho cov nyhuv flocculation. Qhov kev siv ua ke no tsis yog tsuas yog txhim kho kev ua haujlwm ntawm cov dej phwj tuaj, tab sis kuj tseem pab txo qis cov sludge thiab cov nqi kho mob. Tsis tas li ntawd, peb tseem tuaj yeem muab lwm cov flocculants rau kev kho dej khib nyiab, xws li Polyferric Sulphate (PFS),Aluminium Sulfate, FeCl3, PDADMAC, thiab lwm yam.
Lub caij no, flocculants tau dav siv hauv textile, papermaking, petrochemical thiab lwm yam lag luam.Ua ib qho piv txwv ntawm kev lag luam ntawv, nws yuav tsim cov dej khib nyiab ntau hauv cov txheej txheem papermaking, nrog rau cov dej dawb, cov kua dub thiab cov dej khib nyiab zaum kawg, uas muaj ntau yam organic thiab impurities. Cov dej dawb raug tso tawm los ntawm lub tshuab ntawv thaum lub sijhawm ua cov ntawv, uas muaj cov ntsiab lus fiber ntau thiab cov nqi rov qab siv dua. Siv PAM rau flocculation tuaj yeem tshem tawm cov teeb meem tshem tawm thiab cov impurities hauv dej, kom paub txog cov dej dawb rov qab. CPAM yog ib qho kev xaiv zoo rau kev kho cov kua dej dub. Nws tuaj yeem flocculate lignin thiab pigment hauv dej, yog li tshem tawm chroma thiab COD. Tom qab kev kho dej khib nyiab, ntau cov sludge yuav raug tsim. Kev siv Cationic Polyacrylamide (CPAM) tsis tuaj yeem tsuas yog txo cov dej noo thiab cov sludge, tab sis kuj txo cov nqi kho sludge.
Tsis tas li ntawd, flocculants kuj yog ib feem tseem ceeb ntawm kev lim dej.Cov dej hauv ntuj feem ntau muaj cov impurities xws li sediment, algae, thiab cov kab mob, uas tsis tsuas yog cuam tshuam rau saj thiab tsos ntawm dej, tab sis kuj yuav ua rau muaj kev hem thawj rau tib neeg kev noj qab haus huv. Kev siv cov flocculants tuaj yeem ceev cov khoom me me no rau hauv cov floc loj dua, uas yooj yim rau cov nag los tom ntej, pom thiab tshuaj tua kab mob. Nws tuaj yeem tsis tsuas yog tshem tawm impurities hauv dej, tab sis kuj txhim kho kev nyab xeeb thiab saj ntawm cov dej haus.
Feem ntau, kev siv dav dav ntawm flocculants tuaj yeem pab daws qhov teeb meem dej paug thiab txhawb kev sib npaug ntawm ecological thiab kev txhim kho kom ruaj khov. Yog tias koj muaj kev xav tauFlocculants siv hauv kev kho dej, thov koj xav tiv tauj peb.