FLOCCULATION
Mundima yekemesitiri, flocculation ndiyo nzira iyo macolloidal particles anobuda kubva pamvura inoyerera kana kuti flake fomu kubva pakumiswa kungave kwega kana nekuwedzera kweanojekesa.Iyi nzira inosiyana nekunaya kwemvura pakuti iyo colloid inongomiswa mumvura seyakagadzikana kupararira isati yanyungudika uye haina kunyungudika mumhinduro.
Coagulation uye flocculation maitiro akakosha mukurapa kwemvura.Iyo coagulation chiito ndeyekukanganisa uye kuunganidza zvimedu nemakemikari kupindirana pakati pecoagulant uye colloid, uye flocculate uye precipitate asina kugadzikana zvimedu nekuzvibatanidza kuita flocculation.
TERM DEFINITION
Sekureva kweIUPAC, flocculation "maitiro ekubata uye kunamatira uko zvimedu zvekupararira zvinoumba masumbu ehukuru hukuru".
Chaizvoizvo, flocculation ndiyo nzira yekuwedzera flocculant kuti igadzirise yakagadzika yakachajwa zvimedu.Panguva imwecheteyo, flocculation inzira yekusanganisa inosimudzira agglomeration uye inobatsira pakugadzirisa chidimbu.Iyo yakajairika coagulant ndeyeAl2 (SO4) 3• 14H2O.
Nzvimbo yekushandisa
TEKNOLOJIA YEKURAPA MVURA
Flocculation uye kunaya kwemvura kunoshandiswa zvakanyanya mukucheneswa kwemvura yekunwa uye mukurapa kwetsvina, mvura yemadutu uye tsvina yemaindasitiri.Maitiro ekurapa maitiro anosanganisira gratings, coagulation, flocculation, precipitation, particle filtration uye disinfection.
SURFACE CHEMISTRY
Mune colloidal chemistry, flocculation ndiyo nzira iyo zvidimbu zvakanaka zvinounganidzwa pamwechete.Iyo floc inogona kubva yayangarara kumusoro kwemvura (opalescent), yogara pasi pemvura (inonaya) kana kusefa nyore kubva mumvura.Iyo flocculation maitiro evhu colloid ane hukama zvakanyanya nemhando yemvura yakachena.Kupararira kwakanyanya kwevhu colloid hakungokonzeresa zvakananga kuvhuvhuta kwemvura yakatenderedza, asi zvakare kunokonzera eutrophication nekuda kwekutorwa kwezvinovaka muviri munzizi, madziva uye kunyange submarine hull.
CHEMISTRY YEMUVIRI
Kune emulsions, flocculation inotsanangura kuunganidzwa kwemadonhwe ega akapararira kuitira kuti madonhwe ega ega asarase zvimiro zvavo.Nokudaro, flocculation ndiyo danho rekutanga (droplet coalescence uye yekupedzisira kuparadzaniswa kwechikamu) inotungamirira kukuwedzera kukwegura kwemulsion.Flocculants inoshandiswa mumineral beneficiation, asi inogona kushandiswawo mukugadzirwa kwezvinhu zvemuviri zvechikafu nemishonga.
DEFLOCCULATE
Reverse flocculation ndiyo yakanyatsopesana neflocculation uye dzimwe nguva inonzi gelling.Sodium silicate (Na2SiO3) muenzaniso wakajairika.Colloidal particles anowanzo kuparadzirwa pahupamhi hwepH, kunze kweiyo yakaderera ionic simba remhinduro uye kutonga kwemonovalent metal cations.Zviwedzerwa zvinodzivirira colloid kubva pakuumba flocculent zvinonzi antiflocculants.Kune reverse flocculation kuburikidza ne electrostatic zvipingamupinyi, mhedzisiro ye reverse flocculant inogona kuyerwa nekugona zeta.Maererano neEncyclopedia Dictionary of Polymers, antiflocculation “inzvimbo kana kuti nzvimbo yokupararira kwechinhu chakasimba mumvura umo chidimbu chimwe nechimwe chakasimba chinoramba chakazvimirira uye chisina kubatanidzwa kune vavakidzani vacho (kungofanana neemulsifier).Kumiswa kusingaite-flocculating kune zero kana kuderera zvakanyanya goho ".
Reverse flocculation inogona kuve dambudziko mumiti yekuchenesa tsvina sezvo ichiwanzo tungamira kune madhaka ekugadzirisa matambudziko uye kuderera kwemhando yemvura.
Nguva yekutumira: Mar-03-2023