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KMID : 0382420000260030092
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Korean Journal of Environmental Health Society
2000 Volume.26 No. 3 p.92 ~ p.97
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A Study on the Treatment of Incinerator Wastewater with Biofilm Reactor
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Suh Dong-Woo
Shin Dae-Yewn
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Abstract
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The treatment of the washout wastewater from small scale incinerator was performed physically, chemically and biologically. The results are as follows. 1. SS, FS removal efficiency of washout wastewater from incinerator was 67.4%, 37.4%, while SS, FS of sewage wastewater was removed 63.2% 35.4% respectively. 2. The optimal conditions for chemical coagulation turned out to be pH 7.5, alum(A1_2O_3 10%)30㎖/ℓ and polyelectrolyte(A-601P 0.1%)4 ㎖/ℓ. SS 86%, FS 89.5%, BOD 42.5% and COD_Mn, 63.5% was removed and the removal efficiency of some metals are shown as Pb 93.5%, Zn 86.5% and Fe 80.6%. The concentration of the effluent was SS 9 ㎖/ℓ, BOD 98.4 ㎎/ℓ, and COD_Mn 138.4 ㎎/ℓ. 3. The removal efficiency in treating washout wastewater of incinerator through HBC-briquet media was getting higher with increasing HRT, and mixed wastewater with 1:1, 1:2 ratio could be met up to the standard limit with higher HRT than 12 hr. Under the condition of 1:2 mix ratio and HRT 24 hr, removal efficiency of SS, BOD, COD_Mn, T-N and T-P was 92.1%, 90%, 87%, 48.2% and 48%, respectively, and the concentration of treated wastewater was SS 2.9㎎/ℓ, BOD 10.3 ㎎/ℓ, COD_Mn 14.1 ㎎/ℓ, T-N 11.6 ㎎/ℓ and T-P 1.3 ㎎/ℓ, respectively.
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