CAJ | 학술논문

为进一步提高煤制甲醇废水中SS及COD的去除效果，采用混凝沉淀工艺对煤制甲醇废水进行预处理。通过混凝搅拌实验分析混凝剂加药量、混凝时间、PAC与PAM复配投加对浊度及COD去除效果的影响。结果表明：在PAC、PAFC及PFS三种混凝剂中，最佳混凝剂为PAC；在PAC加药量为60 mg/L的情况下，最佳混凝时间为20~25 min；在PAC投加60 mg/L、非离子型PAM投加0．2 mg/L、混凝20 min的条件下， PAC与PAM复配投加可避免胶体再稳，并将浊度及COD的去除率分别提高至81．8%和12．5%。
위진일보제고매제갑순폐수중SS급COD적거제효과，채용혼응침정공예대매제갑순폐수진행예처리。통과혼응교반실험분석혼응제가약량、혼응시간、PAC여PAM복배투가대탁도급COD거제효과적영향。결과표명：재PAC、PAFC급PFS삼충혼응제중，최가혼응제위PAC；재PAC가약량위60 mg/L적정황하，최가혼응시간위20~25 min；재PAC투가60 mg/L、비리자형PAM투가0．2 mg/L、혼응20 min적조건하， PAC여PAM복배투가가피면효체재은，병장탁도급COD적거제솔분별제고지81．8%화12．5%。
This paper arises from the need to further improve the removal effects of SS and COD in coal-to-methanol wastewater using coagulating sedimentation as a pretreatment process to pretreat coal-to-methanol wastewater and analyzing the impacts of coagulation tests on coagulant dosage, coagulation time, compound addition with PAC and PAM. The results show that PAC is the best coagulant of three coagulant agents—PAC, PAFC and PFS;the best coagulation time is 20~25 min in the presence of the PAC dosage of 60 mg/L;compound addition of PAC and PAM can avoid the new stability of colloids and raise the removal rates of turbidity and COD to 81 . 8% and 12 . 5%, as in the case of the dosage of 60 mg/L PAC and 0. 2 mg/L nonionic PAM.