摘要
在改性天然高分子絮凝剂 (CMS)和聚合氯化铝 (PAC)复合处理有机废水絮体沉降速度的实验中 ,用显微镜和电镜观察到絮凝物是有自相似特征的不规则形状 ,具有分形特征 .在 pH值为 6 86、聚合氯化铝 (PAC)加入量为 80mg/L条件下 ,天然改性高分子药剂加入量为 1 5mg/L时沉降效果最好 ,与单独加入PAC相比 2 0min时平均沉降速度分别为 2 6mm/min和 1 .7mm/min .并计算出此时复合处理形成絮凝体的分维数为 1 70 .
The sedimentation rate and fractional dimension of the floc was studied during the process of the organic waste water treatment with modified natural polymer (CMS) and polymeric aluminum chloride (PAC).Irregular garrulous form of the floc was observed with microscope and electron scanning microscope.The results showed that the sedimentation rate was 2.6mm/min with the modified natural polymer (CMS) and 1.7mm/min without CMS in condition of keeping the pH value to 6.86 and added quantity of PAC to 80mg/L.The fractional dimension of the floc D f was calculated to be 1.70 in the best sedimentation rate.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2001年第1期114-116,共3页
Environmental Science
基金
国家自然科学基金!资助项目 (2 97770 11)
关键词
天然高分子
絮凝
废水处理
聚合氯化铝
复合沉降
water treatment
flocculation
modified polymer
polymeric aluminum chloride
fractional
