氯霉素废水可生物降解性研究

Biodegradability of chloromycetin wastewater

研究结果表明：①氯霉素废水ＣＯＤ浓度达２９８５８～４９６１３ｍｇＬ－１，ＢＯＤ５／ＣＯＤＣｒ比值为０．４２，属可生物降解废水．因为其中的氯霉素和氯化物对生物处理有较强的抑制作用，故宜作适当的稀释处理．②用好氧生物法处理时，平均进水ＣＯＤ浓度为８８６ｍｇＬ－１，平均ＣＯＤ去除率６４．５％；用厌氧生物法处理时，平均进水ＣＯＤ浓度为４５３９．５ｍｇＬ－１，平均ＣＯＤ去除率７８％．③从ＢＯＤ５／ＣＯＤＣｒ比值来看，经过生物处理，废水中的可生物降解成分基本去除，生物抑制作用也随之消失，出水的安全性大大提高．

The results showed that ① the average CODCr concentration of chloromycetin wastewater was 29 858～49 613 mg·L-1 Judged by the ratio of BOD5 to CODCr(042), the wastewater was capable of biological treatment There was, however, strong inhibition to the concerned bacteria because the wastewater contained high concentration of chloromycetin and chlorides ② after aerobic biotreatment, 645% of the influent COD (886 mg·L-1) was averagely removed, and 780% of the influent COD (4 5395 mg·L-1) was averagely removed with anaerobic bioprocess ③ judged by the ratio of effluent BOD5 to CODCr, the biodegradable pollutants were removed and the inhibition to living things disappeared The safety of treated wastewater was largely improved