制革行业物化污泥制备再生水处理剂研究  

Preparation of Reclaimed Water Treatment Agent from Physicochemical Sludge of Leather Industry

作　　者：陈国栋[1,2] 庞晓燕 段力民 丁志文 徐峻 CHEN Guodong;PANG Xiaoyan;DUAN Limin;DING Zhiwen;XU Jun(South China University of Technology,Guangzhou 510640,China;China Leather and Footwear Research Institute Co.Ltd.,Beijing 100015,China)

机构地区：[1]华南理工大学,广东广州510640 [2]中国皮革制鞋研究院有限公司,北京100015

出　　处：《中国皮革》2023年第8期1-6,共6页China Leather

基　　金：基于非洲原皮特性的高性能皮革绿色制造集成技术研究(2020YFE0203800)。

摘　　要：为实现制革行业污泥减量化、无害化、资源化的目标,以水洗-酸溶解为核心工艺,对制革物化污泥制备水处理剂的可行性进行了研究。研究表明,物化污泥的最佳煅烧温度为1000℃;最佳水洗条件为固液比1∶10,水洗时间1 h,水洗次数2次;最佳酸溶解条件为固液比5 g/L,酸浓度0.5 mol/L,酸溶解温度20℃,酸溶解时间0.5 h;溶液中Cr^(6+)最佳还原条件为摩尔比(还原剂∶Cr^(6+))16∶1,还原温度40℃。在本文的工艺条件下,制革行业的物化污泥可实现最佳的减量化和资源化利用目标。In order to realize the target of sludge reduction,harmlessness and resource utilization in leather industry,this paper took water washing-acid dissolution as the core process,studied the feasibility of preparing water treatment agent from tannery sludge.The results show that the optimal calcination temperature of physicochemical sludge is 1000℃.The best washing conditions are solid-liquid ratio 1∶10,use ultrapure water wash 1 h and two times.The optimum acid dissolution conditions include solid-liquid ratio is 5 g/L,acid concentration is 0.5 mol/L,acid dissolution temperature is 20℃,acid dissolution time is 0.5 h.The best reduction condition of Cr^(6+)in solution is suggested at 16∶1 of molar ratio(reductant∶Cr^(6+)),and 40℃of reduction temperature.Under the process conditions,the physicochemical sludge of leather industry can achieve the optimal of reduction and resource utilization.

关 键 词：制革物化污泥 六价铬 再生水处理剂 复鞣染色废水 

分 类 号：TS59[轻工技术与工程—皮革化学与工程]