Removal of High-Strength of Ammonium and Phenol from Coking Wastewater by Alcaligenes Faecalis No.4
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چکیده
Alcaligenes faecalis No.4, which is capable of heterotrophic nitrification and aerobic denitrification was used to treat coking wastewater (CW) to remove high-strength of ammonium and phenol. First, the phenol-degrading ability of No.4 was verified and a synthetic medium containing lactate and phenol as carbon sources was subsequently applied to the No.4 culture. Both carbon materials were entirely utilized for the complete consumption of ammonium. Next a coking wastewater containing 400mg/l of phenol and 400mg/l of ammonium-nitrogen was treated by the No.4 culture. Both compounds were completely removed through the addition of 4g/l of lactate. The removal rate of ammonium was 1.1kg-N/m3/day which is several hundred-fold higher than that in conventional treatment system.
منابع مشابه
Heterotrophic Nitrification and AerobicDenitrification of a Wastewater from a ChemicalCompany by Alcaligenes faecalis No.4
A wastewater from a chemical company (abbreviated as WC) containing approximately 5000 mg NH4-N/L ammonium and a slight amount of BOD was treated with Alcaligenes faecalis No.4 (No.4),which is capable of heterotrophic nitrification and aerobic denitrification. The repeatedbatch operation was conducted at 30°C for 900 h at controlled dissolved oxygen concentration (DO) of 2-3 mg/L in the presenc...
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