摘要
通过单因素实验系统研究了聚丙烯酰胺投加量、pH值、搅拌强度等因素对化工废水絮凝效果的影响。结果表明,在投加量15 mg/L、pH值7.5、快速搅拌300 r/min(2 min)和慢速搅拌120 r/min(15 min)条件下,浊度去除率达95.2%,COD去除率达78.6%,阳离子型聚丙烯酰胺表现最佳。与传统硫酸铝法相比,该方法运行成本降低28.6%,污泥产量减少35.7%,为化工废水处理工程优化应用提供科学依据。
The effects of polyacrylamide dosage,pH value,and stirring intensity on the flocculation performance in chemical wastewater treatment were systematically investigated through single-factor experiments.Results showed that under optimal conditions(a dosage of 15 mg/L,a pH of 7.5,rapid stirring at 300 r/min for 2 min and slow stirring at 120 r/min for 15 min),removal rates of turbidity and COD reached 95.2%and 78.6%,respectively,with cationic polyacrylamide demonstrating superior performance.Compared to traditional aluminum sulfate method,the PAM process reduced operating costs by 28.6%and sludge production by 35.7%,providing scientific guidance for optimized polyacrylamide application in chemical wastewater treatment.
出处
《化工设计通讯》
2026年第2期130-132,共3页
Chemical Engineering Design Communications
关键词
聚丙烯酰胺
化工废水
絮凝
投加量
PH值
polyacrylamide
chemical wastewater
flocculation
dosage
pH value
