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Process study of vacuum membrane distillation for the treatment of Chinese herbal Curcuma longa L. cleaning wastewater

Authors： ZHANG Yansong, ZHAO Yan, JI Zheng, YAN Haiyang, WU Bo, GUO Yanyan, WANG Huchuan, LI Chuanrun

Units： College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012

KeyWords： traditional Chinese medicine wastewater; vacuum membrane distillation; water recovery; Curcuma

ClassificationCode：

year,volume(issue):pagination： 2023,43(1):133-138

Abstract：

Abstract: The effectiveness of vacuum membrane distillation process on the treatment performance of Chinese herbal Curcuma longa L. cleaning wastewater were investigated. The continuous treatment effect of vacuum membrane distillation on the cleaning wastewater was evaluated under the optimal process conditions simultaneously. Results showed that the membrane flux could reach a maximum of 51.35 kg·m-2h-1 at a feed temperature of 65 ℃, a feed flow rate of 750 mL·min-1 and a permeate side vacuum of 0.09 MPa. After 8 h of continuous operation, the COD in the permeate was as low as 21.14 mg·L-1 and the ammonia nitrogen, total nitrogen and total phosphorus content were all less than 0.5 mg·L-1. The water quality fully met the discharge limits stipulated in the "Discharge Standards of water pollutants for pharmaceutical industry of Traditional Chinese Medicine (GB 21096-2008)" and reached the reclaimed water reuse standard stipulated in the "The reuse of urban recycling water - Water quality standard for industrial uses (GB/T 19923-2005)".

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AuthorIntro：

张岩松（1997—），男，硕士研究生，研究方向为制药过程传质与分离，E-mail：zhangyansong17@qq.com

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