摘要
采用三相生物流化床工艺处理模拟丙烯酸丁酯生产废水,考察了进水丙烯酸浓度、对甲基苯磺酸浓度、容积负荷、水力停留时间对废水处理效果的影响.结果表明,该工艺适合于丙烯酸丁酯废水的高负荷处理.进水中100 mg/L丙烯酸及50 mg/L的对甲基苯磺酸对生物流化床中未经驯化的微生物具有明显的毒害作用,经过2周左右的驯化,毒害作用可基本消除.生物膜驯化后三相生物流化床处理含丙烯酸和对甲基苯磺酸的丙烯酸丁酯模拟废水,在COD容积负荷低于11.56～13.56kg/(m3.d)的条件下,丙烯酸和对甲基苯磺酸被完全去除.在进水COD为2 000 mg/L,容积负荷<8.86 kg/(m3.d)时,出水COD可稳定达到《污水综合排放标准》(GB 8978-1996)规定的二级标准.在进水COD为9 550～11 800 mg/L(丙烯酸、对甲基苯磺酸质量浓度分别为6 244 mg/L、1 000 mg/L),容积负荷为7.96～9.83 kg/(m3.d)条件下,出水COD维持在271～360mg/L,达到《污水综合排放标准》(GB 8978-1996)三级标准.
The butyl-acrylate-production wastewater was treated by a three-phase biological fluidized bed reactor.The influences of acrylic acid concentrations,p-toluenesulfonic acid concentrations,volumic load and hydraulic retention time on pollutants removal efficiencies were investigated.It was indicated that the reactor was suitable for the treatment of butyl-acrylate-production wastewater at a high loading rate.Acrylic acid of 100 mg/L or p-toluenesulfonic acid of 50 mg/L in the influent can inhibit the unacclimated microorganisms in the fluidized bed reactor.The inhibition effects were eliminated after an acclimation of two weeks.Acrylic acid and p-toluenesulfonic acid could be removed completely at COD loading rates up to 11.56-13.56 kg/（m3.d）.The effluent COD could satisfy the demand of Class Ⅱ in Chinese Integrated Wastewater Discharge Standard（GB 8978-1996） at COD loading rates up to 8.86 kg/（m3.d） when influent COD concentration is below 2 000 mg/L.When the influent COD concentration was increased to 9 550-11 800 mg/L（acrylic acid of 6 244 mg/L and p-toluenesulfonic acid of 1 000 mg/L）,the effluent COD was 271-360 mg/L,which satisfied the demand of Class Ⅲ in Chinese Integrated Wastewater Discharge Standard（GB 8978-1996） at COD loading rates of 7.96-9.83 kg/（m3.d）.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2011年第5期1382-1387,共6页
Environmental Science
基金
国家水体污染控制与治理科技重大专项(2008ZX07207-004)
关键词
丙烯酸丁酯废水
生物处理
三相生物流化床
丙烯酸
对甲基苯磺酸
butyl-acrylate-production wastewater
biological treatment
three-phase biological fluidized bed
acrylic acid
p-toluenesulfonic acid
