WANGJing-yin,CAIHai-zhen,RONGHong-wei,et al.Effect of Different Concentrations of PPCPs on Microbial Toxicity in Activated Sludge System[J].China Water & Wastewater,2023,39(23):104-110.
Effect of Different Concentrations of PPCPs on Microbial Toxicity in Activated Sludge System
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第23期
Page:
104-110
Column:
Date of publication:
2023-12-01
- Abstract:
- This paper carried out the destructive experiment of activated sludge system by manually adding 4 typical pharmaceutical and personal care products (PPCPs), evaluated the toxicity effects of the types and concentrations of PPCPs on sludge activity during biological denitrification, compared the changes of the organic compounds degradation, nitrification and denitrification capabilities of activated sludge systems under the stress of PPCPs, and analyzed the profiles of activity of electron transport system (TTC-ETS), specific oxygen uptake rate (SOUR), ammonia uptake rate (AUR) and the ratio of viable bacteria to dead bacteria (RatioG/R), so as to characterize the sensitivity of PPCPs to produce toxicity in activated sludge system and evaluate its feasibility as an evaluation index of toxicity effect. The toxicity sequence of PPCPs determined by different methods was basically the same, and the inhibitory effect of PPCPs on activated sludge system in descending order was trimethoprene (TMP), sulfamethoxazole (SMX), diclofenac (DF) and ibuprofen (IBP). SOUR had the highest sensitivity to toxicity and was the best index to characterize the inhibitory effect of PPCPs on the activity of sludge.
Last Update:
2023-12-01