摘要
对微氧颗粒污泥降解五氯酚(PCP)过程中,主要影响因素溶解氧浓度(DO)、pH值、PCP负荷以及外加碳源浓度的作用规律进行了研究。实验结果表明,DO浓度较高时,不仅不利于PCP脱氯,而且吹脱作用会导致周围空气污染;而在微氧浓度范围,适当增加DO浓度,有利于PCP彻底脱氯;pH值在6.7～7.5范围内,对PCP及中间氯酚产物、CODCr的去除率效果最好;PCP负荷增加引起PCP和CODCr去除率以及产气量的下降。
In this paper, effects of restrictive ecological factors such as dissolved oxygen （DO） concentration, pH, PCP loading rate and concentration of glucose on the system were studied. Experimental results showed that increasing of DO concentration in microaerobic range was in favor of PCP dechlorination, however, disadvantage effects might occur when DO concentration was beyond this range. PCP and CODCr removal rates decreased when pH was lower than 6.7 or higher than 7.5. There was no obvious effect on PCP and CODCr removal when PCP loading rate was less than 1.5 × 10^-2 kg/（m^3·d）. Appropriate increase of glucose concentration was favored the degradation of PCP and CODCr, but excessive high concentration caused negative effect.
出处
《中国造纸》
CAS
北大核心
2006年第6期31-34,共4页
China Pulp & Paper
基金
青岛科技大学科研启动基金项目
江南大学工业生物技术教育部重点实验室开放课题资助。
关键词
微氧
颗粒污泥
五氯酚
限制性生态因子
microaerobic
granular sludge
pentachlorophenol
restrictive ecological factors
