Study on microbial toxicity and degradation pathway of phenolic substance in dry powder coal gasification wastewater
In view of the problem that the existing coal gasification phenol-containing wastewater treatment technology is hard to meet the development needs of the coal chemical industry,the toxicity and biodegradability of phenolic substances towards microorganisms under anaerobic and facultative conditions were investigated in the study.The results showed that volatile phenol concentration above 300 mg/L could significantly inhibit the activity of anaerobic sludge.Volatile phenol concentration below 1 000 mg/L did not inhibit the activity of facultative microorganisms and could degrade volatile phenols and COD through oxygenic reaction.The degradation rate of volatile phenol and COD was related to ORP.The higher the ORP,the faster the degradation rate of volatile phenol and COD,and the COD removal rate was 60%-70%when the reaction was balanced.
NETL
NSTL
万方数据
