论文部分内容阅读
以电镀废盐酸、铝酸钙粉为原料,采用酸溶一步法制备絮凝剂聚合氯化铝铁(PAFC),进行了生活污水和模拟酸性黑印染废水的处理试验,并与市售聚合氯化铝(PAC)对比。结果表明,当PAFC投加量20 mg.L-1,pH=8,搅拌强度250 r.min-1、60 s,20 r.min-1、10 min,温度20～40℃时,对生活污水有最佳的絮凝效果,浊度和COD去除率分别为97%和38.2%;当投药量为90 mg.L-1,pH=9,沉淀时间为30 min时,对模拟酸性黑印染废水有最佳的絮凝效果,脱色率达86.5%。PAFC对生活污水的浊度、COD去除率和对模拟酸性黑印染废水的脱色率均优于PAC。
The electroplating waste hydrochloric acid and calcium aluminate powder were used as raw materials to synthesize flocculant poly aluminum ferric chloride (PAFC) by acid dissolving one-step process. The domestic sewage and simulated acid black dyeing and printing wastewater treatment experiments were carried out and compared with commercial polychlorinated Aluminum (PAC) contrast. The results showed that when PAFC dosage 20 mg.L-1, pH = 8, stirring intensity 250 r.min-1,60 s, 20 r.min-1,10 min, temperature 20 ~ 40 ℃, The best flocculation effect of sewage was obtained, and the turbidity and COD removal rates were 97% and 38.2% respectively. When the dosage was 90 mg.L-1, pH = 9 and the precipitation time was 30 min, Have the best flocculation effect, decolorization rate of 86.5%. PAFC on domestic sewage turbidity, COD removal rate and the simulated acid black printing and dyeing wastewater decolorization rate is superior to PAC.