Application of toxicity identification evaluation procedures on wastewaters and sludge from a municipal sewage treatment works with industrial inputs.
A comparison of influent and effluent wastewater toxicities to Daphnia magna was undertaken to determine the most representative aqueous fraction for future toxicity identification evaluation (TIE) studies. Wastewater samples originated from a wastewater treatment plant which receives mainly domestic wastewater and industrial effluents. The TIE results reveal that the key toxicant contained in the influent was 2-propylbezaldehyde oxime. Results suggest that greater attention needs to be given to the receiving influent containing 2-propylbezaldehyde oxime to avoid damaging the bacterial populations in the primary activated sludge process. In addition, in order to evaluate the applicability of the reuse of activated sludge as a fertilizer in agriculture, TIE studies were also performed on water extracts from surplus sludge.
Hongxia
Yu
Y
State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210093, China.
Jing
Cheng
C
Yuxia
Cui
C
Huihua
Shang
S
Zhonghai
Ding
D
Hongjun
Jin
J
D000818:Animals; D003621:Daphnia; D005308:Fertilizers / Q000032:analysis / Q000633:toxicity; D007220:Industrial Waste; D012722:Sewage / Q000737:chemistry* / Q000382:microbiology; D018675:Toxicity Tests; D014865:Waste Disposal, Fluid
D005308:Fertilizers; D007220:Industrial Waste; D012722:Sewage