CAJ | 학술논문

针对垃圾渗滤液纳滤浓缩液的水质特征，采用烧碱软化-混凝沉淀-电化学氧化法对纳滤浓缩液进行处理。研究结果表明，利用烧碱/纯碱法软化纳滤浓缩液，总硬度和钙硬度去除率都超过95%，出水总硬度质量浓度低于300 mg/L；采用混凝沉淀法可去除浓缩液中大分子有机物，腐殖酸去除率超过40%，COD去除率超过30%，其质量浓度由3340 mg/L降低至2230 mg/L。最后，纳滤浓缩液经电化学氧化后，ρ（BOD）/ρ（COD）由0.03提升至0.35以上，出水可生化性良好，可由填埋场的生化系统处理至排放标准。
침대랄급삼려액납려농축액적수질특정，채용소감연화-혼응침정-전화학양화법대납려농축액진행처리。연구결과표명，이용소감/순감법연화납려농축액，총경도화개경도거제솔도초과95%，출수총경도질량농도저우300 mg/L；채용혼응침정법가거제농축액중대분자유궤물，부식산거제솔초과40%，COD거제솔초과30%，기질량농도유3340 mg/L강저지2230 mg/L。최후，납려농축액경전화학양화후，ρ（BOD）/ρ（COD）유0.03제승지0.35이상，출수가생화성량호，가유전매장적생화계통처리지배방표준。
Landfill leachate concentrate generated from nanofiltration of biologically pretreated landfill leachate was sequentially treated by "caustic soda-soda ash" process, coagulation-sedimentation and electrochemical oxidation process. The results showed that both of the removal rates of total hardness and calcium hardness exceeded 95%, and the concentration of total hardness in the effluent was below 300 mg/L. Organic matters with high molecular weight could be removed by coagulation-sedimentation process, the removal efficiency of humic acids and COD could achieve 40%and 30%, respectively. Moreover, the COD concentration decreased from 3 340 mg/L to 2 230 mg/L. Finally, the bioavailability of nanofiltration concentrate was improved after electrochemical oxidation, and the value of BOD/COD increased from 0.03 to 0.35. The effluent was treated by the bio-treated systems, and it could meet the requirements of discharge standard.