Uketshezi njengobuchwepheshe bendabuko bokwenza amakhorali, amanzi amdaka akhishwa enqubeni yokufaka amakhandlela aqukethe ukungcola okunjengama-dioxin, kanti ama-chloride e-organic kunzima ukuwehlisa futhi angcolise kakhulu imvelo.
Ubuchwepheshe be-Ozone busetshenziswa embonini yamaphepha yokwenziwa koqweqwe lomgogodla nokukhishwa kwempahla endaweni eyodwa, ukukhishwa kwempahla emanzini angcolile, nokwelashwa kwamanzi angcolile okuthuthukile. I-Ozone isibe yisixazululo esithandwayo embonini yamaphepha ngenxa yezindleko zayo eziphansi, ukungcoliswa kwemvelo nokusetshenziswa okubanzi.
1. I-ozone pulp bleaching
I-ozone ingumenzeli we-bleaching oxidizing kakhulu. Kuhlelo lwe-pulp bleaching, i-ozone iphendula nge-pulp lignin ngokusebenzisa i-oxidation, edala ukuthi i-chromophore ilahlekelwe yikhono layo "lokufaka imibala" futhi izuze amakhorali. Ngaphezu kokukhipha izinto ezinemibala, ibuye isuse i-lignin eyinsalela nokunye ukungcola, ithuthukise ubumhlophe nokuhlanzeka koginindela, futhi yenza ubumhlophe buhlale isikhathi eside.
Izinzuzo ze-ozone bleaching:
1. I-ozone bleaching inqubo engenawo i-chlorine futhi ayinakho ukungcola kwemvelo;
2. I-ozone iyi-oxidant enamandla, enokusebenza okunamandla nokusebenza kahle okukhulu;
3. Faka esikhundleni i-chlorine enqubeni yokufaka amakhorali ukuze unciphise ukukhishwa kwe-chloride;
4. Ukusabela kwe-ozone oxidation kuyashesha, kunciphisa izindleko zokuba mhlophe;
5, i-ozone oxidation ikhono lekhwalithi, ithuthukise ubumhlophe bephepha futhi inciphise ukuphuzi koginindela.
Ukwelashwa komoya ongcolile we-ozone pulp
I-ozone iyi-oxidant enamandla esetshenziselwa ukwelashwa kabusha nokwelashwa okuthuthukile kwamanzi angcolile ezimboni. Inemisebenzi eminingi ekwelashweni kwamanzi: inzalo, ukukhipha umbala kanye nokubola kwe-oxidative. I-ozone isetshenziselwa ikakhulukazi ukukhipha amakholomu ekwelashweni kwamanzi angcolile. Yehlisa isisekelo sendaba ephilayo futhi wehlise amanani we-COD ne-BOD.
Umphumela onamandla we-ozone ungabola uketshezi lwe-macromolecule lube yinto encane ephilayo, kuguqule ubuthi bezingcolisi, futhi konakalise namakhemikhali. Ngasikhathi sinye sezinto eziphilayo ezilulazayo, i-COD ne-BOD kufanele kuncishiswe ukuze kuqhutshekwe kwenziwe ngcono ikhwalithi yamanzi.
Lapho ubhekene nenkinga ye-chromaticity enkulu yamanzi angcolile, i-ozone oxidation ingadala ukuthi umbala wedayi usize umbala noma isibopho esithandanayo sesakhi se-chromogenic siphulwe, futhi ngesikhathi esifanayo sibhubhise i-cyclic compound eyakha iqembu le-chromophore, ngaleyo ndlela kukhishwa amakholomu amanzi angcolile.
Uma kuqhathaniswa nenqubo yendabuko ye-chlorine, i- ozone inezinzuzo ezisobala embonini yephepha. Inempahla enamandla ye-oxidizing, isivinini esikhulu futhi akukho ukungcola kwemvelo. Ngeke nje yehlise kuphela izindleko zokugaya uginindela, kepha futhi inciphise ukukhishwa kokungcola. Kulezi zinsuku, ukuvikelwa kwemvelo kubaluleke kakhulu, ubuchwepheshe be-ozone budlala indima enkulu.
Isikhathi Iposi: Sep-07-2019