UASB treatment of p-acetamidobenzene sulfonyl chloride producing wastewater and influence of sulfate

Weicheng Li, Hong Zhang, Weikang Qi, Qigui Niu, Yo Ryu, Gyokuyu Ri, Yingxin Gao

Research output: Contribution to journalArticlepeer-review


In this work, UASB treatment of p-acetamidobenzene sulfonyl chloride(p-ASC)-producing wastewater with methanol as co-substrate was investigated. The influence of the organic loading rate(OLR) from 2.0 g COD/(L·d) to 24.0 g COD/(L·d) by shortening HRT in a stepwise fashion on the performance of the reactor was firstly evaluated. The optimal OLR at HRT of 0.45 d was found 7. 0 g COD/(L·d) where 76% and 100% removal efficiencies of COD and p-ASC were achieved, respectively. Interestingly, no sulfate was added into the feed, but a certain quantity of sulfate and sulfide was simultaneously generated in the effluent. Secondly, no inhibition to the performance of the UASB was found even at a p-ASC concentration up to 1 100 mg/L when HRT was set as 0.45 d. Thirdly, by introducing the 3 000 mg/L sulfate into the feed resulted in an inhibition of methanogenesis with no obvious suppression of sulfidogenesis. When the sulfate was reduced to 1 000 mg/L, the reactor exhibited a quick recovery after one week.

Original languageEnglish
Pages (from-to)110-114
Number of pages5
JournalChinese Journal of Environmental Engineering
Issue number1
Publication statusPublished - 2016 Jan 5


  • Methane-producing bacteria(MPB)
  • P-acetamidobenzene sulfonyl chloride producing wastewater
  • Sulfate reducing bacteria(SRB)
  • UASB reactor

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution


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