UKUGUQUKA
Kwintsimi yekhemistri, i-flocculation yinkqubo apho amasuntswana e-colloidal avela kwi-precipitate kwifom ye-flocculent okanye ye-flake ukusuka ekumisweni ngokuzenzekelayo okanye ngokongezwa kwe-clarifier. Le nkqubo iyahluka kwimvula kuba i-colloid inqunyanyiswa kuphela kulwelo njengendlela yokusasazwa okuzinzileyo phambi kokuba i-flocculation kwaye ayinyibilikisiwe kwisisombululo.
I-coagulation kunye ne-flocculation yinkqubo ebalulekileyo kunyango lwamanzi. Isenzo se-coagulation kukuphazamisa kunye nokudibanisa amasuntswana ngokusebenzisana kweekhemikhali phakathi kwe-coagulant kunye ne-colloid, kunye ne-flocculate kunye ne-precipitate amasuntswana angazinzanga ngokuwadibanisa kwi-flocculation.
TERM INKCAZELO
Ngokutsho kwe-IUPAC, i-flocculation “yinkqubo yoqhagamshelwano kunye nokuncamathela apho amasuntswana osasazo enza amaqela amakhulu”.
Ngokusisiseko, i-flocculation yinkqubo yokongeza i-flocculant ukumisa amasuntswana ahlawulweyo azinzileyo. Ngelo xesha, i-flocculation yindlela yokuxuba ekhuthaza i-agglomeration kwaye igalelo ekuhlalweni kweengqungquthela. I-coagulant eqhelekileyo yi-Al2 (SO4) 3• 14H2O.
Indawo yosetyenziso
ITEKNOLOJIYA YONYANGO LWAMANZI
I-Flocculation kunye nemvula zisetyenziswa ngokubanzi ekucoceni amanzi okusela kunye nokunyangwa kwamanzi amdaka, amanzi emvula kunye namanzi amdaka kwimizi-mveliso. Iinkqubo zonyango eziqhelekileyo ziquka i-gratings, i-coagulation, i-flocculation, i-precipitation, i-particle filtration kunye ne-disinfection.
IKHEMIstry yoMphezulu
Kwimichiza ye-colloidal, i-flocculation yinkqubo apho amasuntswana amahle ahlanganiswe ndawonye. Iflokhi inokudada ngaphezulu kolwelo (i-opalescent), ihlale ezantsi kulwelo (imvula) okanye ihluze ngokulula kulwelo. Indlela yokuziphatha ye-flocculation ye-colloid yomhlaba inxulumene ngokusondeleyo nomgangatho wamanzi ahlaziyekileyo. Ukusasazwa okuphezulu kwecolloid yomhlaba akubangeli ngokuthe ngqo kuphela ukungqubana kwamanzi ajikelezileyo, kodwa kubangela i-eutrophication ngenxa yokufunxwa kwezondlo emilanjeni, kumachibi kunye nakwi-submarine hull.
IKHEMIstry YOMZIMBA
Kwi-emulsions, i-flocculation ichaza ukudityaniswa kwamathontsi asasazekileyo ahlukeneyo ukuze amathontsi ngamanye angaphulukani neepropathi zawo. Ngaloo ndlela, i-flocculation yinyathelo lokuqala (i-droplet coalescence kunye nokuhlukana kwesigaba sokugqibela) esikhokelela ekugugeni okuqhubekayo kwe-emulsion. I-Flocculants isetyenziswa kwi-mineral beneficiation, kodwa ingasetyenziswa kuyilo lweempawu ezibonakalayo zokutya kunye neziyobisi.
PHUMULA
I-Reverse flocculation ichasene ngqo ne-flocculation kwaye ngamanye amaxesha ibizwa ngokuba yi-gelling. I-sodium silicate (Na2SiO3) ngumzekelo oqhelekileyo. Iingqungquthela ze-Colloidal zihlala zihlakazwa kwiindawo eziphezulu ze-pH, ngaphandle kwamandla e-ionic aphantsi kwesisombululo kunye nokulawula kwee-cations zetsimbi ze-monovalent. Izongezo ezithintela i-colloid ekwenzeni i-flocculent zibizwa ngokuba yi-antiflocculants. Ukubuyisela umva ngokusebenzisa izithintelo ze-electrostatic, umphumo we-flocculant umva unokulinganiswa ngekhono le-zeta. Ngokutsho kweEncyclopedia Dictionary of Polymers, iantiflocculation “yimeko okanye imeko yokusasazwa kwesiqina kulwelo apho isuntswana ngalinye eliqinileyo lihlala lizimele yaye lingadityaniswanga nabamelwane balo (kakhulu njenge-emulsifier).
Ukubuyisela umva i-flocculation inokuba yingxaki kwizityalo zokucocwa kwamanzi amdaka njengoko ihlala ikhokelela kwiingxaki zokulungisa udaka kunye nokuwohloka komgangatho wamanzi amdaka.
Ixesha lokuposa: Mar-03-2023