PVA纺丝废水资源化利用的中试研究  

Pilot-scale Study on Resource Utilization of PVA Spinning Wastewater

作　　者：罗小勇 吴正雷 刘乐天 庄力 孙桂花 LUO Xiaoyong;WU Zhenglei;LIU Letian;ZHUANG Li;SUN Guihua(Jiangsu Jiuwu Hi-Tech Corporation Limited,Nanjing 211808,China)

机构地区：[1]江苏久吾高科技股份有限公司,江苏南京211808

出　　处：《中国资源综合利用》2022年第2期17-20,共4页China Resources Comprehensive Utilization

摘　　要：聚乙烯醇(PVA)纺丝废水成分复杂,含有醋酸,盐含量高,可生化性差。因此,本文探讨了"化学除硬+深度除硬+双膜法+冷冻结晶+高级氧化"组合工艺处理PVA纺丝废水的可行性。结果表明,该组合工艺对PVA纺丝废水的处理效果好,系统产水水质稳定,化学需氧量(COD)、盐含量、硬度均优于循环水水质标准,结晶盐硫酸钠达到《工业无水硫酸钠》(GB/T 6009—2014)的Ⅱ类一等品要求。Polyvinyl alcohol (PVA) spinning wastewater has complex composition,containing acetic acid,with high salt content and poor biodegradability.Therefore,this paper discusses the feasibility of the combined process of "chemical removal of hardening + deep hardening removal + double membrane method + freezing crystallization + advanced oxidation" to treat PVA spinning wastewater.The results show that the combined process has a good effect on the treatment of PVA spinning wastewater,and the water quality of the system is stable,and chemical oxygen demand (COD),salt content and hardness are all better than circulating water quality standards,and the crystalline salt sodium sulfate meets the requirements of Class Ⅱ first-grade product in "Industrial Anhydrous Sodium Sulfate" (GB/T 6009—2014).

关 键 词：PVA纺丝废水 资源化利用 冷冻结晶 高级氧化 膜集成技术 

分 类 号：X788[环境科学与工程—环境工程]