Study on the treatment of N,N-dimethylformamide-containing waste water by up-flow anaerobic sludge blanket reactor
ZHANG Xinzheng
DENG Zixuan
ZHANG Tao
HU Yong
CHEN Rong
LI Yuyou
LI Dapeng
PAN Yang
KONG Zhe
Abstract：N,N-dimethylformamide(DMF)is widely used as an organic solvent in the chemical in-dustry.This study aimed to assess the treatment of high-concentration DMF-containing industrial wastewater using a lab-scale up-flow anaerobic sludge blanket(UASB)reactor.The UASB reactor op-erated within a limited range of organic loading rates(OLR)of 1.57～9.59 kg COD/(m3·d),with the hydraulic retention time(HRT)reduced from 48 hours to 8 hours.The reactor demonstrated excel-lent removal efficiency,exceeding 95％.CO2 emissions and bio-energy production during the treatment of DMF wastewater were estimated and evaluated using empirical equations.Compared to the conven-tional activated sludge(CAS)process,the UASB process exhibited significant advantages in terms of en-ergy recovery and CO2 emission reduction.It achieved a positive net energy potential of 0.061 kW·h/m3 and substantially reduced CO2 emissions by 6.18 kg/m3.The results of this study provide evidence of the potential and feasibility of the UASB process for DMF waste treatment,while also contributing to the promotion of the carbon neutrality concept in wastewater treatment.
Keywords：Anaerobic digestionNN-dimethylformamideUASBIndustrial wastewaterBio-energy production
Publication Date：2024-02-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 159-166 )