Purified terephthalic acid wastewater biodegradation and toxicity

Xu Xiang Zhang, Yu Qiu Wan, Shu Pei Cheng*, Shi Lei Sun, Cheng Ju Zhu, Wei Xin Li, Xiao Chun Zhang, Gui Lin Wang, Jian Hua Lu, Xiang Luo, Ji Dong Gu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


The biodegradation and toxicity of the purified terephthalic acid (PTA) processing wastewater was researched at NJYZ pilot with the fusant strain Fhhh in the carrier activated sludge process (CASP). Sludge loading rate (SLR) for Fhhh to COD of the wastewater was 1.09 d-1 and to PTA in the wastewater was 0.29 d-1. The results of bioassay at the pilot and calculation with software Ebis3 showed that the 48h-LC50(median lethal concentration) to Daphnia magna for the PTA concentration in the wastewater was only 1/10 of that for the chemical PTA. There were 5 kinds of benzoate pollutants and their toxicities existing in the wastewater at least. The toxicity parameter value of the pure chemical PTA cannot be used to predicate the PTA wastewater toxicity. The toxicity of the NJYZ PTA wastewater will be discussed in detail in this paper.

Original languageEnglish
Pages (from-to)876-880
Number of pages5
JournalJournal of Environmental Sciences
Issue number5
StatePublished - 2005
Externally publishedYes


  • Biodegradation
  • Fusant strain
  • Purified terephthalic acid
  • Software
  • Toxicity
  • Wastewater


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