A multilevel reuse system with source separation process for printing and dyeing wastewater treatment: A case study.
This paper proposes a new system of multilevel reuse with source separation in printing and dyeing wastewater (PDWW) treatment in order to dramatically improve the water reuse rate to 35%. By analysing the characteristics of the sources and concentrations of pollutants produced in different printing and dyeing processes, special, highly, and less contaminated wastewaters (SCW, HCW, and LCW, respectively) were collected and treated separately. Specially, a large quantity of LCW was sequentially reused at multiple levels to meet the water quality requirements for different production processes. Based on this concept, a multilevel reuse system with a source separation process was established in a typical printing and dyeing enterprise. The water reuse rate increased dramatically to 62%, and the reclaimed water was reused in different printing and dyeing processes based on the water quality. This study provides promising leads in water management for wastewater reclamation.
['Wang|Rui|R|', 'Jin|Xin|X|', 'Wang|Ziyuan|Z|', 'Gu|Wantao|W|', 'Wei|Zhechao|Z|', 'Huang|Yuanjie|Y|', 'Qiu|Zhuang|Z|', 'Jin|Pengkang|P|']
D004396:Coloring Agents D011327:Printing D014865:Waste Disposal, Fluid D062065:Waste Water D018508:Water Purification D060753:Water Quality
Source separation process Printing and dyeing wastewater Multilevel water reuse Sequential reuse per water quality level