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発表 Seasonal Variation of Reduction Ability of Bioligical Effect by Wastewater Treatment Based on Algal Growth

作成年度 2016 年度
論文名 Seasonal Variation of Reduction Ability of Bioligical Effect by Wastewater Treatment Based on Algal Growth
論文名(和訳)
論文副題
発表会 Water and Environment Technology Conference 2016
誌名 Water and Environment Technology Conference 2016
巻・号・回 - -
発表年月日 2016/08/27 ~ 2016/08/28
所属研究室/機関名 著者名(英名)
Water Quality Research Team, Water Environment Research GroupFumihiko Takeda
Water Quality Research Team, Water Environment Research GroupMizuhiko Minamiyama
Water Quality Research Team, Water Environment Research GroupSeiichiro Okamoto
抄録
There is little knowledge about a reduction in a biological effect on aquatic organisms by wastewater treatment, and a biologically impactful chemical(s) contained in wastewater. The purpose of this study is to examine a seasonal variation of a biological effect caused by influent and final effluent obtained from a wastewater treatment plant employing conventional activated sludge process, and to characterize a biologically impactful chemical(s) in the wastewater based on an algal growth test. The influent in every season tested had a growth-infhibiting effect on Pseudokirchneriella subcapitata. The final effluent obtained in winter had the effect, although not obtained in other seasons.The grouth-inhibiting effect of the effluent in the winter may be due to the reduction in the bioligical treatment ability accompanied by a decrease in water temperature, which may lead to the residue of some biologically impactful chemicals in the effluent. It was suggested that the biologically impactful chemicals were non-polar organic toxicants and surfactants in the influent, and oxidants in the final effluent in a Toxicity Identification Evaluation test.
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