Njira zisanu ndi imodzi zochizira zimbudzi zapamwamba za COD

Pakadali pano, COD yamadzi onyansa imaposa muyezo makamaka kumaphatikizapo electroplating, board board, papermaking, mankhwala, nsalu, kusindikiza ndi utoto, mankhwala ndi madzi ena onyansa, ndiye njira zochiritsira za COD ndi ziti? Tiyeni tikawone limodzi.
Kugawika kwa COD yamadzi onyansa.
Magwero opangira madzi otayira amagawidwa m'magulu: madzi otayira m'mafakitale, madzi onyansa aulimi, ndi madzi onyansa azachipatala.
Zimbudzi zapakhomo zimatanthawuza kusakaniza kovutirapo kwa mitundu yosiyanasiyana ya zinthu zachilengedwe zopangidwa ndi zinthu zokhala ndi organic ndi organic, kuphatikiza:
① Zoyandama kapena kuyimitsidwa zazikulu ndi zazing'ono zolimba
②Zotulutsa za Colloidal ndi gel
③Yankho loyera.
Njira zochiritsira za COD zamadzi onyansa ndi monga:
Kuchotsa COD ndi njira ya coagulation: njira yophatikizira mankhwala imatha kuchotsa bwino zinthu zachilengedwe m'madzi onyansa ndikuchepetsa COD kwambiri. Coagulation ndondomeko anatengera, powonjezera flocculant, ntchito adsorption ndi bridging wa flocculant, magetsi awiri wosanjikiza wothinikizidwa, kotero kuti colloid ndi inaimitsidwa nkhani m'madzi ndi destabilized, kugundana, ndi condensed mu floc, ndiyeno sedimentation kapena mpweya. flotation ndondomeko ntchito kuchotsa Tinthu tasiyanitsidwa ndi madzi, kuti akwaniritse cholinga kuyeretsa madzi thupi.
Njira yachilengedwe yochotsera COD: Njira yachilengedwe ndi njira yoyeretsera madzi oyipa yomwe imadalira ma enzymes a microbial kuti oxidize kapena kuchepetsa zinthu za organic kuti ziwononge zomangira zopanda unsaturated ndi ma chromophores kuti akwaniritse cholinga chamankhwala. M'zaka zaposachedwa, tizilombo tating'onoting'ono tating'onoting'ono takhala tikugwiritsidwa ntchito kwambiri pochiza madzi oyipa chifukwa cha liwiro lawo la kubereka mwachangu, kusinthasintha kwamphamvu komanso mtengo wotsika.
Kuchotsedwa kwa Electrochemical COD: Chofunika kwambiri pakuyeretsa madzi owonongeka a electrochemical ndi kugwiritsa ntchito electrolysis mwachindunji kapena mwanjira ina kuchotsa zowononga m'madzi, kapena kusintha zinthu zapoizoni kukhala zopanda poizoni komanso zopanda poizoni.
Kuchotsa COD ndi micro-electrolysis: Ukadaulo wa Micro-electrolysis pakadali pano ndi njira yabwino yopangira madzi otayira achilengedwe, omwe amadziwikanso kuti electrolysis yamkati. Kupangaku kumagwiritsa ntchito zida za micro-electrolysis kudzaza madzi opanda mphamvu popanda magetsi, ndipo kumapanga kusiyana komwe kungathe 1.2V palokha kuti kuphatikizire madzi akuwonongeka kuti akwaniritse cholinga chowononga zowononga zachilengedwe.
Kuchotsa COD pogwiritsa ntchito njira yoyamwitsa: kaboni, macroporous resin, bentonite ndi zida zina zokometsera zitha kugwiritsidwa ntchito kutsatsa komanso kuchitira zinthu za organic ndi chroma m'chimbudzi. Itha kugwiritsidwa ntchito ngati chithandizo chisanachitike kuti muchepetse COD yomwe ndiyosavuta kuyigwira.
Njira ya oxidation yochotsera COD: M'zaka zaposachedwa, kugwiritsa ntchito ukadaulo wa Photocatalytic oxidation m'malo opangira madzi otayira kuli ndi chiyembekezo chabwino chamsika komanso phindu lazachuma, komabe pali zovuta zambiri pakufufuza m'gawoli, monga kupeza zothandizira kwambiri. , kulekana ndi kuchira kwa zolimbikitsa kudikira.