摘要
对机加工乳化液废水进行了破乳剂筛选及絮凝条件实验。实验结果表明,最佳破乳剂为浓硫酸,投加量为0.5%(体积分数)时即可将含油量从8670 mg/L降至30 mg/L以下;pH呈弱碱性,PAM投加量为50 mg/L时絮凝效果最好,COD最低可降至480 mg/L。根据实验结果及企业现状,提出了合理可行的"酸化破乳-中和-絮凝"的工艺流程,最终出水可直排入城市下水道。
Emulsified wastewater from mechanical process is treated by method of acidification demulsification and flocculation.The results show that： The best demulsifier is concentrated sulfuric acid and the oil content can be reduced from 8 670 mg/L to below 30 mg/L when dosage of acid is 0.5%（volume ratio）;COD can be reduced to 480 mg/L when dosage of PAM is 50 mg/L and wastewater is slightly alkaline.According to the experimental results and situation in the enterprises,the process of ＂acidification demulsification-neutralization-flocculation＂ is presented.The final effluent can be directly discharged into urban drainage systems.
出处
《工业安全与环保》
北大核心
2010年第8期3-4,共2页
Industrial Safety and Environmental Protection
关键词
乳化液废水
酸化
絮凝
PH
emulsified wastewater acidification flocculation pH
