十二烷基二甲基苄基氯化铵对生物除磷的影响研究  

EFFECT OF BENZYL DIMETHYL DODECYL AMMONIUM CHLORIDE ON BIOLOGICAL PHOSPHORUS REMOVAL

作　　者：乔婧[1] 刘东方[1] 李克勋[1] 陶芸[1] 张国威[1] 孙洁[1] 

机构地区：[1]南开大学环境科学与工程学院,天津300071

出　　处：《水处理技术》2011年第6期27-29,33,共4页Technology of Water Treatment

基　　金：国家水体污染控制和治理专项子课题(2008ZX07314-002);国家自然基金项目(50908117)

摘　　要：利用静态研究了十二烷基二甲基苄基氯化铵(DDBAC)对生物除磷的影响,通过设置不同DDBAC含量及空白对照对好氧吸磷和厌氧释磷进行了分析。结果表明,厌氧初始COD在400 mg.L-1左右时,随着DDBAC负荷的增加,系统释磷能力增强;随着DDBAC含量的增加,吸磷速率降低直至丧失了吸磷特性;DDBAC的存在对生物除磷系统带来了不利影响,使试验污泥的电导率增加,质量浓度40 mg.L-1时能明显影响细胞膜的通透性。Batch experiments were conducted to investigate the effect of benzyl dimethyl dodecyl ammonium chloride（DDBAC） on biological phosphorus removal.Different concentrations of DDBAC were acted on the tested sludge under anaerobic and aerobic phase respectively.Results showed that the presence of DDBAC promoted the release of phosphorus while inhibited the uptake of phosphorus.When initial COD was 400 mg·L-1,the increment of P under the aerobic condition acted by 40 mg·L-1 DDBAC which was three times as many as that in control;the phosphorus uptake rate under the aerobic phase decreased until the phenomenon of p-uptake disappeared when the DDBAC reached 10 mg·L-1.The presence of the QAC negatively affected the performance of biological phosphorus removal.The electrical conductivity of the tested sludge increased sharply with the addition of 40 mg·L-1 DDBAC,which elucidated that DDBAC had an obvious influence on membrane permeability.

关 键 词：生物除磷 十二烷基二甲基苄基氯化铵(DDBAC) 季铵盐 抑制 

分 类 号：X703.1[环境科学与工程—环境工程]