He ho'āʻo koʻikoʻi ka koi oxygen kemika no ka loiloi ʻana i ka maikaʻi o nā effluents a me nā wai ʻino ma mua o ka hoʻokuʻu ʻia. Hōʻike ka hoʻokolohua Chemical Oxygen Demand (COD) i ka pono o ka oxygen o ka effluent a hoʻohana ʻia no ka nānā ʻana a me ka mālama ʻana i nā hoʻokuʻu ʻana, a no ka loiloi ʻana i ka hana o ka mea kanu lapaʻau. ʻO ka hopena o ka hoʻoheheʻe ʻana a i ʻole ka wai ʻino i ka wai e loaʻa ana e wānana ʻia e kona koi oxygen. ʻO kēia no ka mea ʻo ka lawe ʻia ʻana o ka oxygen mai ka wai maoli e hōʻemi i kona hiki ke mālama i ke ola wai. No laila, hana ʻia ka hoʻāʻo COD ma ke ʻano he mea maʻamau i loko o nā hale hana o nā pono wai a me nā hui ʻoihana.

ʻO Aijiren COD Test Tube he liʻiliʻi ka nui a he māmā ke kaumaha. Hiki ke hoʻāʻo ʻia me ka ʻole o nā mea hana ʻē aʻe a me nā ʻenehana; he 3-5 mau minuke wale nō e hoʻāʻo ai i kahi laʻana, me ka ʻole o nā mea hou a i ʻole nā ​​​​mea hana, a maʻalahi ke hana.

Nā kikoʻī o ka hoʻāʻo ʻana i nā koi o ke kemika:

Hoʻohui ʻia ka 2mL o kahi laʻana wai a i ʻole ka wai watse i kahi paipu moʻomeheu aniani 16mm i loaʻa ka reagent digestion a me kahi catalyst. Hoʻopili ʻia ka paipu me ka polypropylene, PTFE laina pāpale a hoʻomehana ʻia i loko o kahi digester poloka ma 150C no 2 mau hola. Hoʻemi ʻia ka ʻalani Hexavalent chromium i kahi chromium trivalent ʻōmaʻomaʻo. ʻO ka laulā analytical no ke ʻano spectrophotometric ʻo 5-150ppm (ana ʻia ma 420nm).

Ua hana ʻo Aijiren i ka hana ʻana o ka pahu hoʻāʻo COD me nā Caps no nā makahiki he ʻumi, ua loaʻa iā mākou ka ʻike waiwai a me nā kaʻina hana maʻamau e hana i ka pahu hoʻāʻo COD me ka pāpale, a hiki iā mākou ke hōʻoiaʻiʻo i ke kiʻekiʻe o ka pahu hōʻike COD i hana ʻia e Aijiren me ke kumu kūʻai kūpono.