Fenton反应-中和-生物法处理没食子酸粗制废液  

TREATMENT OF ROUGHING WASTE-LIQUOR FROM GALLIC ACID PRODUCTION BYCOMBINATION OF FENTON'S REACTION, NEUTRALIZATION AND BIO-DEGRADATION

作　　者：李阁男[1] 蒋新元[1] 刘扬林[2] 刘文剑[1] 刘淑云[2] 

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004 [2]长沙环境保护职业技术学院,湖南长沙410004

出　　处：《水处理技术》2010年第9期106-109,共4页Technology of Water Treatment

基　　金：湖南省环保局环境科技发展项目(湘财建指2007-185)

摘　　要：采用Fenton反应-中和-生物法联合处理没食子酸粗制废液,考察了各因素对废液COD去除率的影响。结果表明,Fenton反应处理没食子酸粗制废液的最佳条件为n:(H2O2):n(Fe2+)为10:1,双氧水用量为每1 L废液加入80 mL质量分数30%的H2O2,反应时间为30 min、温度为室温,初始pH为2.0左右。Fenton反应处理后,废液的COD由54.4 g·L-1降低到33.0 g·L-1,去除率达到39.3%;Fenton处理后的废液用CaO中和后,COD下降到16.9 g·L-1,去除率48.73%;最后废液经过稀释后采用好氧生物法继续处理,COD为1.99 g·L-1的废水经生物法处理96 h后降低到0.928 g·L-1,去除率为53.3%,达到GB 8978-1996中规定的医药原料药COD三级排放标准。Combination of Fenton reaction,neutralization and biological processes to treat waste liquor from gallic acid roughing production was studied in this paper.The effect of the molar ratio of n（H2O2）：n（Fe2＋）,amount of H2O2,reaction time,initial pH,and reaction temperature on COD removal efficiency of waste liquor was investigated respectively,and the optimum conditions of Fenton＇s reaction were obtained.After Fenton＇s reaction,the COD of waste liquor was dropped from about 54.4 g·L-1 to about 33.0 g·L-1,and its removal efficiency reached about 39.28%.Then the COD of waste liquor was dropped to about 16.9 g·L-1 after being neutralized by CaO,and its removal efficiency reached about 48.73%.At last the waste liquor was diluted and treated by aerobic biological process,the COD of wastewater was dropped from 1.99 g·L-1 to 0.928 g·L-1,and its removal efficiency reached 53.33%,and the wastewater discharged finally could meet the National 3 standard for the discharge of waste water from pharmaceutical raw materials production（GB 8978-1996,COD≤1 000 mg·L-1）.

关 键 词：没食子酸 废液 FENTON反应 中和 生物降解 

分 类 号：X703.1[环境科学与工程—环境工程]