摘要
采用组合药剂破乳和芬顿氧化的物化技术处理废乳化液,并对其影响因素进行了系统的研究。实验结果表明,当氯化钙投加量为5 g/L、搅拌时间为30 min、聚合氯化铝(PAC)投加量为4 g/L和阴离子聚丙烯酰胺(APAM)投加量为10 mg/L时,COD去除率达67.38%;破乳沉淀后,在酸性条件下进行芬顿氧化,七水硫酸亚铁投加量为11.12 g/L,质量分数为30%的双氧水投加量为100 m L/L,反应3 h后,投加氧化钙和APAM进行絮凝沉淀,当氧化钙投加量为6.33 g/L、APAM投加量为10 mg/L时,出水的COD降至1 731 mg/L,COD去除率达92.47%,BOD降至1 595 mg/L,B/C为0.92,可以直接进入生化系统。
The waste emulsion was treated using demulsification and Fenton oxidation, and its influencing factors were studied systematically. The experimental results show when the dosage of calcium chloride was 5 g/L, the stirring time was30 minutes, the dosage of PAC was 4 g/L, the dosage of APAM was 10 mg/L, the removal rate of COD was 67.38%. After demulsification and precipitation, Fenton oxidation was carried out under acidic conditions. The dosage of ferrous sulfate heptahydrate was 11.12 g/L, 30% hydrogen peroxide was 100 m L/L, and after three hours of reaction, calcium oxide and APAM were added for flocculation and sedimentation, the dosage of calcium oxide was 6.33 g/L, the dosage of APAM was10 mg/L, the COD was reduced to 1 731 mg/L, the removal rate of COD was 92.47%, BOD was decreased to 1 595 mg/L, B/C was 0.92, and the effiluent could enter the biochemical system directly.
作者
冷超群
边文强
董涛
么瑞静
孙慧峰
Leng Chaoqun;Bian Wenqiang;Dong Tao;Yao Ruijing;Sun Huifeng(ENN Envirotech Corporation Ltd,, Langfang 065001, China)
出处
《煤炭与化工》
CAS
2017年第11期43-48,共6页
Coal and Chemical Industry
关键词
废乳化液
破乳
絮凝沉淀
芬顿氧化
waste emulsion
demulsification
flocculation
Fenton oxidation
