Ni lọwọlọwọ, aṣoju omi idọti COD kọja boṣewa nipataki pẹlu itanna eletiriki, igbimọ iyika, ṣiṣe iwe, elegbogi, aṣọ, titẹjade ati awọ, kemikali ati omi idọti miiran, nitorinaa kini awọn ọna itọju fun omi idọti COD? Jẹ ki a lọ wo papọ. Egbin omi CO...
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