摘要
采用微电解/Fenton法对土霉素废水二级出水进行深度处理。正交和单因素试验结果表明,微电解法的最佳工艺条件:Fe投量为125 g/L、铁炭质量比为1.5∶1、初始pH值为4.0、反应时间为2 h,在进水COD为361～395 mg/L的条件下,处理后出水COD可降至198～207 mg/L,对COD的去除率可达44%以上;采用Fenton法进一步处理微电解出水,其最佳工艺条件:H2O2(浓度为30%)投加量为2 mL/L、初始pH值为3.0、反应时间为60 min,处理后出水COD<120 mg/L,组合工艺对COD的总去除率达到70%以上,满足《发酵类制药工业水污染物排放标准》(GB21903—2008)的要求。
Advanced treatment experiments for secondary effluent of oxytetracycline wastewater were studied by micro-electrolysis and Fenton method. The results of orthogonal experiments and single factor experiments showed that the optimum conditions of micro-electrolysis method were as follows： the dosage of Fe was 125 g/L, the mass ratio of Fe to C was 1.5 ： 1, the initial pH was 4.0, and the reac- tion time was 2 h. The concentration of COD was reduced from 361 - 395 mg/L to 198 - 207 mg/L, and the removal rate was above 44%. The optimum conditions of Fenton method for treating the micro-elec- trolysis effluent were as follows： the dosage of 30% H202 was 2 mL/L, the initial pH was 3.0, and the reaction time was 60 min. The concentration of COD in the final effluent was less than 120 mg/L, and the total removal rate was more than 70%. The final effluent met the Discharge Standards of Water Pollutants for Pharmaceutical Industry--Fermentation Products Category （GB 21903 -2008 ）.
出处
《中国给水排水》
CAS
CSCD
北大核心
2012年第5期74-77,共4页
China Water & Wastewater
基金
国家水体污染控制与治理科技重大专项(2008ZX07529-006)
关键词
土霉素废水
二级出水
微电解
FENTON法
深度处理
oxytetracycline wastewater
secondary effluent
micro-electrolysis
Fenton advanced treatment
