小型合併処理浄化槽における外因性内分泌攪乱化学物質の動態評価
2004 年 40 巻 4 号 p. 143-151
詳細
2004 年 40 巻 4 号 p. 143-151
The inflow and discharge of estrogens and endocrine disrupting chemicals (EDCs) in actual condition were examined for the domestic wastewater treatment facilities over one year. The contents of EDCs in effluents were as fbllows : 17β-estradiol (E2), N.D. (not detected) -0.0078μg/l; bisphenol A (BPA), 0.10-1.55μg/l; nonylphenol (NP), 3.52-34.6μg/l; di- (2-ethylhexyl) phthalate (DEHP), N.D.-0.15, μg/l; di-n-butyl phthalate (DBP), N.D. The removals of the EDCs were more than 80%. When the mass balance of EDCs were calculated, it became clear that 50% and more of the amounts of inflow EDCs were being adsorbed by sludges in anaerobic filter tank, and effect on the decrease in the EDCs by anaerobic filter tank was suggested.
