YANGQing,RENKun-peng,YANGHui,et al.Analysis of Synthetic Leather DMF Wastewater Treatment and Reuse Engineering Example[J].China Water & Wastewater,2025,41(18):126-131.
Analysis of Synthetic Leather DMF Wastewater Treatment and Reuse Engineering Example
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第18期
Page:
126-131
Column:
Date of publication:
2025-09-17
- Keywords:
- synthetic leather wastewater; DMF; hydrolytic acidification; two-stage AO; MBR; treatment and reuse
- Abstract:
- In response to the high water consumption and high requirements for water reuse in leather factory production, we use the hydrolysis acidification+two-stage AO+MBR process to treat the condensed water containing DMF after distillation/deacidification treatment from a leather factory in Wenzhou. The average concentration of pollutants in the process water is: COD 56 mg/L, NH3-N 0.5 mg/L, TN 3.5 mg/L, SS 0.5 mg/L, and the chromaticity of 8 times. The effluent quality meets the requirements of the leather factory owner for recycled water quality. Reusing the process water to the solidification tank in the production workshop as supplementary water achieved a 100% reuse rate of condensed water. Since the completion and operation of the project, the wastewater treatment effect has been stable, with a actual processing water volume of 360 m3/d, the construction cost is 9.5 million yuan, and the water treatment cost is 9.05 yuan/m3, which has certain economic value and environmental benefits.
Last Update:
2025-09-17