用正交实验法研究超细滑石粉对再生纸造纸废水混凝处理效果的影响

Studies of the coagulation effect of SFT on wastewater from reproduced papermaking

利用正交法设计实验 ,研究超细滑石粉 SFT(12 5 0目 )代替 PAM作助凝剂对再生纸造纸废水进行混凝处理。研究结果表明 ,SFT可以替代 PAM,且 PAC+SFT方案的最佳组合方式为 :p H6 .5 ,PAC30 0 mg/ L,SFT3mg/ L。此时 ,浊度去除率为 97%以上 ,色度去除率为 87.7% ,沉降速度提高 35 % ,处理废水用药品成本降低0 .10 46元 /

Designed by means of orthogonal experiment method,experiments were carried cut to study the possibility of SFT as a substitute for PAM to treat wastewater from reproduced papermaking. The results show that SFT can be used as a substitute for PAM. The optimum combination of PAC, SFT and pH value is 300 mg/L,3 mg/L and 6.5. Thus the rate of turbidity removal is up to 97%,that of color removal being 87.7%.setting rate improving 35%,coagulant cost deducting 0.104 6 $/m 3.