Nsomba yakuUlaya

COD yopanga vial imatanthauza mtundu wina wa vial yomwe imagwiritsidwa ntchito pakuwunika kwa mankhwala okwanira oxygen akufunafuna (cod) yamadzi. COD ndi muyeso wa mpweya wa oxygen amafunikira kuti azigwiritsa ntchito mankhwala opangira zachilengedwe komanso ogwiritsa ntchito muyezo wamadzi.
VoD yopanga vial imakhala ndi mankhwala ofunikira ndi ma reagent kuti athandizire anthu ogula. Nthawi zambiri zimaphatikizapo chisakanizo cha othandizira amphamvu oxidizing, monga potaziyamu Dichromate kapena potaziyamu permanganate, limodzi ndi mankhwala omwe amathandizira kuyambitsa ndikusintha njira ya oxidation.

Mbale Zithunzi Za Chuma ndi zida zapadera zomwe zimagwiritsidwa ntchito pakuwunika kwa mankhwala kuti mudziwe zomwe oxnkin amafunikira (cod) yamadzi. COD ndi kuchuluka kwa mpweya wa oxygen amafunikira kuti azigwiritsa ntchito mankhwala opangira zachilengedwe komanso ogwiritsa ntchito m'madzi.
Mbale izi zimapangidwa ndi galasi lambiri kapena galasi la borosiltia, zomwe zimagwirizana ndi zomwe zimachitika pakusintha kwa mankhwala ndipo zimatha kupirira kutentha kwambiri kwa chimbudzi cha Chuma. Mbalezo zimapangidwa kuti zizigwira ntchito yamadzi nthawi zonse komanso zopangitsira zofunikira pakuyesa kwa cod.

COD (mankhwala oxygen zofunika) chigawenga ndi galasi lapadera lazamagalasi yogwiritsa ntchito potsimikiza cha mankhwala a oxgen zomwe zimafunikira m'madzi amadzi. COD ndi kuchuluka kwa mpweya wa oxygen kumafunikira kuti azigwiritsa ntchito mankhwala ochulukirapo komanso ochulukirapo omwe amapezeka m'madzi.
Chuma cha COD nthawi zambiri chimakhala ndi kapu kapena pulasitiki ya pulasitiki yokhala ndi chipewa cholimba. Vial idapangidwa kuti ithe kupirira kutentha kwambiri ndi zochita zamankhwala zomwe zimachitika nthawi yakugaya.