造纸法再造烟叶RO浓水混凝处理及含铁活性炭的制备与应用研究

发布时间：2018-05-17 17:10

本文选题：活性炭 + 高铁酸钾　；参考：《昆明理工大学》2017年硕士论文

【摘要】：由于采用了与传统造纸行业类似的抄造成形技术,每生产1吨造纸法再造烟叶产品约产生30～60吨废水。造纸法再造烟叶生产废水排放量大、成分复杂、色度高、化学需氧量高、纤维悬浮物多、浓度波动较大,属于难处理的高浓度有机废水。开展造纸法再造烟叶RO浓水的混凝处理研究有实际意义。本文以高铁酸钾(PF)和活性炭(AC)制备了含铁活性炭(PF-AC),其铁成分主要起氧化和絮凝作用,活性炭成分起吸附和催化作用的同时还是絮体形成和长大的骨架。以聚合硫酸铁(PFS)、阳离子型聚丙烯酰胺(CPAM)、高铁酸钾(PF)、活性炭(AC)、含铁活性炭(PF-AC)为混凝剂,开展RO浓水混凝处理研究,绘制了 RO浓水的混凝处理出水水质关于PFS投药量、CPAM投药量和pH三因素的响应曲面,计算了 PFS-CPAM-pH对RO浓水的混凝处理出水水质的拟合方程,确定了 PFS、CPAM和pH混凝处理RO浓水的最佳条件,研究了 PF、AC和PF-AC对经PFS-CPAM处理后的RO浓水的后续处理效果,最后采用PFS、PF-AC和CPAM“混凝-氧化-吸附”处理RO浓水并优化了处理过程。实验结果表明,以3000～3500 mg.L~(-1)PFS、1500～2500mg.L~(-1)PF-AC 和 1000μL.L~(-1)CPAM 处理色度 975 倍、COD 404.96 mg·L~(-1)、pH 7.56 和电导率 6.21 mS.cm~(-1) 的 RO 浓水,出水色度、COD、pH和电导率分别为16～29倍、30.83～47.78 mg·L~(-1)、6.91～7.15和6.77～6.86 mS·cm~(-1),达到《城镇污水处理厂污染物排放标准(GB 18918-2002)》一级A标准要求。
[Abstract]:Because of the use of the same technology as the traditional papermaking industry, about 300.60 tons of waste water is produced for each ton of reconstituted tobacco products produced by paper-making process. The wastewater from reconstituted tobacco leaves produced by paper-making process is a kind of high concentration organic wastewater with high discharge, complex composition, high chroma, high chemical oxygen demand, more fiber suspensions and large fluctuation of concentration. It is of practical significance to study the coagulation treatment of RO concentrated water from tobacco leaf by paper-making process. In this paper, ferric activated carbon (PF-AC) was prepared from potassium ferrate (PFF) and activated carbon (AC). Its iron composition mainly oxidizes and flocculates, and activated carbon plays an important role in adsorption and catalysis, at the same time, it is the skeleton of flocs formation and growth. The study on RO concentrated water coagulation treatment was carried out with PFSN, CPAMN, potassium ferrate (PFN), activated carbon (AAC) and ferric activated carbon (PF-ACAC) as coagulants. In this paper, the response surface of the effluent quality of RO concentrated water for PFS dosage and pH was drawn, and the fitting equation of PFS-CPAM-pH to the effluent quality of RO concentrated water was calculated. The optimal conditions for the treatment of RO concentrated water by PFS- CPAM and pH coagulation were determined. The following treatment effect of PFS-CPAM treated RO concentrated water was studied. Finally, the treatment process of RO concentrated water was optimized by using PFS- PF-AC and CPAM "Coagulation-Oxidation-adsorption". The experimental results showed that the RO concentrated water was treated with PF-AC and 1000 渭 L.L~(-1)CPAM. The pH value was 7.56 and the conductivity was 6.21 mg 路cm ~ (-1) 路L ~ (-1) 路L ~ (-1) 路L ~ (-1) 路L ~ (-1) 路L ~ (-1) PF-AC and ~ (1000 渭 L.L~(-1)CPAM), respectively, for the treatment of RO concentrated water with a pH value of 404.96 mg / L ~ (-1) and a conductivity of 6.21 mg 路L ~ (-1). The pH and electrical conductivity of the effluent were 16.829 times and 47.78 mg / L ~ (-1), respectively, 6.91mg / L ~ (-1) and 6.77 ~ 6.86mS / cm ~ (-1) ~ (-1) respectively, which met the requirements of the first class A standard (GB 18918-2002) for the discharge of pollutants from municipal wastewater treatment plants.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X795;TQ424.1

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