Abstract
A toxicity identification evaluation (TIE) based on Ulva pertusa spore release was conducted in 3 phases for the identification of the major toxicants in effluent from a wastewater treatment plant (WTP) and the receiving water in an adjacent stream. The toxicity of the final effluent (FE), as compared with raw wastewater, and primary and secondary effluent, showed a greater change over 12-monthly sampling events and appeared to have impacts on the toxicity of the downstream water with a significant correlation (r 2 = 0.89, p < 0.01). In Phase I, toxicity characterization indicated that cations were likely to be the responsible toxicants for the FE. In Phase II, cations such as Cu, Ni, and Zn were found in the FE at higher concentrations than the EC 50 concentrations determined for the standard corresponding metals. When the concentrations of each metal in the FE samples were plotted against the respective toxicity units, only zinc showed a statistically significant correlation with toxicity (r 2 = 0.86, p < 0.01). In Phase III, using spiking and mass balance approaches, it was confirmed that Zn was the major toxicant in the effluent from the WTP. Following a change in the Fenton reagent used, to one with a lower Zn content, the toxicity of the FE greatly decreased in subsequent months. The TIE developed here enabled the toxicity of FEs of the WTP to be tracked and for Zn, originating from a reagent used for Fenton treatment, to be successfully identified as the key toxicant. The TIE method based on U. pertusa demonstrated utility as a low cost and simple tool to identify the risk factors for industrial effluents and provided information on regulatory control and management.
| Original language | English |
|---|---|
| Article number | 2 |
| Journal | Frontiers in Environmental Science |
| Volume | 3 |
| Issue number | MAR |
| DOIs | |
| Publication status | Published - 2015 Mar 3 |
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Keywords
- Effluents
- TIE
- Toxicity tests
- Ulva pertusa
- Wastewater treatment
ASJC Scopus subject areas
- Environmental Science(all)
Cite this
Application of the Ulva pertusa bioassay for a toxicity identification evaluation and reduction of effluent from a wastewater treatment plant. / Kim, Youn Jung; Han, Young Seok; Kim, Eunhee; Jung, Jinho; Kim, Sang Hoon; Yoo, Soon Joo; Shin, Gi Sik; Oh, Jeong Ju; Park, Areum; Choi, Hoon; Kim, Mi Seong; Brown, Murray T.; Han, Taejun.
In: Frontiers in Environmental Science, Vol. 3, No. MAR, 2, 03.03.2015.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Application of the Ulva pertusa bioassay for a toxicity identification evaluation and reduction of effluent from a wastewater treatment plant
AU - Kim, Youn Jung
AU - Han, Young Seok
AU - Kim, Eunhee
AU - Jung, Jinho
AU - Kim, Sang Hoon
AU - Yoo, Soon Joo
AU - Shin, Gi Sik
AU - Oh, Jeong Ju
AU - Park, Areum
AU - Choi, Hoon
AU - Kim, Mi Seong
AU - Brown, Murray T.
AU - Han, Taejun
PY - 2015/3/3
Y1 - 2015/3/3
N2 - A toxicity identification evaluation (TIE) based on Ulva pertusa spore release was conducted in 3 phases for the identification of the major toxicants in effluent from a wastewater treatment plant (WTP) and the receiving water in an adjacent stream. The toxicity of the final effluent (FE), as compared with raw wastewater, and primary and secondary effluent, showed a greater change over 12-monthly sampling events and appeared to have impacts on the toxicity of the downstream water with a significant correlation (r 2 = 0.89, p < 0.01). In Phase I, toxicity characterization indicated that cations were likely to be the responsible toxicants for the FE. In Phase II, cations such as Cu, Ni, and Zn were found in the FE at higher concentrations than the EC 50 concentrations determined for the standard corresponding metals. When the concentrations of each metal in the FE samples were plotted against the respective toxicity units, only zinc showed a statistically significant correlation with toxicity (r 2 = 0.86, p < 0.01). In Phase III, using spiking and mass balance approaches, it was confirmed that Zn was the major toxicant in the effluent from the WTP. Following a change in the Fenton reagent used, to one with a lower Zn content, the toxicity of the FE greatly decreased in subsequent months. The TIE developed here enabled the toxicity of FEs of the WTP to be tracked and for Zn, originating from a reagent used for Fenton treatment, to be successfully identified as the key toxicant. The TIE method based on U. pertusa demonstrated utility as a low cost and simple tool to identify the risk factors for industrial effluents and provided information on regulatory control and management.
AB - A toxicity identification evaluation (TIE) based on Ulva pertusa spore release was conducted in 3 phases for the identification of the major toxicants in effluent from a wastewater treatment plant (WTP) and the receiving water in an adjacent stream. The toxicity of the final effluent (FE), as compared with raw wastewater, and primary and secondary effluent, showed a greater change over 12-monthly sampling events and appeared to have impacts on the toxicity of the downstream water with a significant correlation (r 2 = 0.89, p < 0.01). In Phase I, toxicity characterization indicated that cations were likely to be the responsible toxicants for the FE. In Phase II, cations such as Cu, Ni, and Zn were found in the FE at higher concentrations than the EC 50 concentrations determined for the standard corresponding metals. When the concentrations of each metal in the FE samples were plotted against the respective toxicity units, only zinc showed a statistically significant correlation with toxicity (r 2 = 0.86, p < 0.01). In Phase III, using spiking and mass balance approaches, it was confirmed that Zn was the major toxicant in the effluent from the WTP. Following a change in the Fenton reagent used, to one with a lower Zn content, the toxicity of the FE greatly decreased in subsequent months. The TIE developed here enabled the toxicity of FEs of the WTP to be tracked and for Zn, originating from a reagent used for Fenton treatment, to be successfully identified as the key toxicant. The TIE method based on U. pertusa demonstrated utility as a low cost and simple tool to identify the risk factors for industrial effluents and provided information on regulatory control and management.
KW - Effluents
KW - TIE
KW - Toxicity tests
KW - Ulva pertusa
KW - Wastewater treatment
UR - http://www.scopus.com/inward/record.url?scp=85041246446&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85041246446&partnerID=8YFLogxK
U2 - 10.3389/fenvs.2015.00002
DO - 10.3389/fenvs.2015.00002
M3 - Article
AN - SCOPUS:85041246446
VL - 3
JO - Frontiers in Environmental Science
JF - Frontiers in Environmental Science
SN - 2296-665X
IS - MAR
M1 - 2
ER -