23/4: thuheomay@ COD, BOD trong nuoc ao nuoi tom la gi?

VLINH:

BOD (Biochemical Oxygen Demand): Nhu cau oxy sinh hoa (BOD) la luong oxy can thiet cung cap cho vi sinh vat tieu thu de phan huy chat huu co.

COD (Chemical Oxygen Demand): Nhu cau oxy hoa hoc (COD) la luong oxy can thiet de phan huy cac thanh phan huu co bang tac nhan hoa hoc co tinh oxy hoa manh.

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