曝气量对生物流化床处理丙烯酸丁酯废水的影响  

Influence of Aeration Rate on Butyl Acrylate Wastewater Treatment by Biological Fluidized Bed

作　　者：徐洁[1,2] 宋玉栋[2] 周岳溪[2] 黄震[2,3] 梁冬梅[1] 何绪文[3] 

机构地区：[1]吉林农业大学资源与环境学院,吉林长春130118 [2]中国环境科学研究院水污染控制技术研究中心,北京100012 [3]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《环境工程技术学报》2013年第3期215-219,共5页Journal of Environmental Engineering Technology

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07201-005)

摘　　要：采用生物流化床处理丙烯酸丁酯模拟废水,考察了曝气量对废水处理效果的影响。结果表明,随着曝气量的减小,反应器内氧化还原条件变化显著,氧化还原电位(ORP)和溶解氧(DO)浓度下降,对废水特征污染物丙烯酸和对甲基苯磺酸的降解产生显著影响。当ORP为-272～-106mV,DO浓度为0.36～0.93mg/L时,丙烯酸平均去除率在97%以上。当ORP为-245mV以下时,丙烯酸中间降解产物乙酸和丙酸在出水中的浓度显著升高,由ORP为-128～-106mV时的乙酸9.42mg/L,丙酸未检出,增加到ORP为-272～-245mV时的乙酸65.3mg/L,丙酸296.0mg/L。当ORP为-128～-106mV,DO浓度为0.70～0.93mg/L时,对甲基苯磺酸平均去除率达87%,当ORP降至-179mV以下,DO浓度降至0.53mg/L以下时,对甲基苯磺酸去除率降为20%～24%。当ORP从-128～-106mV降至-272～-245mV时,废水溶解性有机碳(DOC)平均去除率由89.9%降至46.1%。Biological fluidized bed was used for the treatment of synthetic butyl acrylate wastewater. The influence of aeration rate was investigated. It was indicated that redox conditions changed significantly in reactor with the decrease of aeration rate. The decrease of （ oxidation-reduction potential） ORP and DO had a significant influence on the degradation of acrylic acid and para-toluene sulphonic acid, which were the two main organic pollutants in the wastewater. When ORP was -272-- 106 mV and DO was 0.36-0.93 mg/L, the average removal rate of acrylic acid was over 97%. When ORP was below -245 mV, the concentration of degradation intermediate of acrylic acid, acetic acid and propionic acid, increased significantly in effluent. When ORP was - 128- - 106 mV, concentration of acetic acid was 9.42 mg/L and propionic acid was not detected. When ORP was - 272- - 245 mV, concentration of acetic acid and propionic acid increased to 65.3 and 296.0 mg/L, respectively. When ORP was - 128- - 106 mV and DO was 0.70-0.93 mg/L, average removal rate of para-toluene sulphonic acid was 87%. When ORP was below - 179 mV and DO was below O. 53 mg/L, the removal rate of para-toluene sulphonic acid was between 20% and 24%. When ORP was changed from - 128- - 106 mV to - 272- - 245 mV, the average removal rate of dissolved organic carbon （DOC） decreased from 89.9% to 46.1%.

关 键 词：曝气量 生物流化床 丙烯酸丁酯废水 丙烯酸 对甲基苯磺酸 

分 类 号：X703.1[环境科学与工程—环境工程]