This study has been carried out to provide the basic data when biofilm with activated carbon was used for Cr(VI)-containing wastewater treatment. The results from this study are follows; Cr(VI) removal efficiencies with dosage of Cr(VI) indicated below 40% when Cr(VI) dosage was over 10㎎/ℓ at A and B reactor, and over 20㎎/ℓ at C reactor, no relation with volume loading rate. COD removal efficiencies with dosage of Cr(VI) were changed when Cr(VI) dosage was 10㎎/ℓ in case of 1.6, 3.2㎏·COD/㎥·day at A reactor, was 20㎎/ℓ in case of 1.6, 3.2㎏·COD/㎥·day at B reactor, was 25㎎/ℓ in case of 1.6, 3.2㎏·COD/㎥·day at C reactor. NH₄^+-N removal efficiencies with dosage of Cr(VI) were changed when Cr(VI) dosage was 1㎎/ℓ, 10㎎/ℓ at A, B reactor, not related with volume loading rate, was 20㎎/ℓ in case of 3.2, 4.8㎏·COD/㎥·day at C reactor. |
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