Removal of Estrogens in Municipal Wastewater Treatment by Coagulation and Foam Separation Using Powdered Activated Carbon

• SUZUKI Yoshihiro

  Department of Civil and Environmental Engineering, Faculty of Engineering, Miyazaki University

• MARUYAMA Toshiroh

  Department of Civil and Environmental Engineering, Faculty of Engineering, Miyazaki University

Bibliographic Information

Other Title

• 粉末活性炭注入を利用した凝集・泡沫分離法による都市下水からのエストロゲンの除去
• フンマツ カッセイタン チュウニュウ オ リヨウ シタ ギョウシュウ ホウマツ ブンリホウ ニ ヨル トシ ゲスイ カラ ノ エストロゲン ノ ジョキョ

Abstract

If it is possible to develop an efficient process of removing estrogens from wastewater during sewage treatment, the load of endocrine disrupting chemicals in the water environment could be greatly reduced. In this study, the removal of estrogens from municipal wastewater by coagulation and foam separation using coagulant and milk casein was examined. The ELISA method was used to measure the efficiency of estrogen removal. In the conventional foam separation method, the removal efficiency of suspended solids was very high. However, most of the estrogen remained in the treated water since approximately 95% of the total estrogen in wastewater was in the dissolved fraction, while the amount of estrogens in the solid fraction was extremely small. Therefore, the removal of dissolved estrogen was difficult using the conventional foam separation process for removing solids. The addition of powdered activated carbon was examined as a pretreatment process. The adsorption efficiency of estrogen to activated carbon was markedly higher than that of other soluble fractions such as E260 (ultraviolet absorbance at 260 nm), chromaticity, and dissolved organic carbon in wastewater. With the addition of powdered activated carbon, both suspended solids and estrogen could be removed by coagulation and foam separation. The removal efficiencies of turbidity and estrogen were 99% and 94%, respectively, under the following dosage conditions: activated carbon, 50mg·l^-1 ; ferric coagulant, 30mg-Fe·l^-1 ; and casein, 50mg·l^-1.

Journal

• Journal of Japan Society on Water Environment

  Journal of Japan Society on Water Environment 26 (11), 757-763, 2003

  Japan Society on Water Environment

Keywords

• removal of estrogens
• foam separation
• powdered activated carbon
• municipal wastewater

Details

• CRID: 1390282680057939328
• NII Article ID: 10012445494
• NII Book ID: AN10372439
• DOI: 10.2965/jswe.26.757
• COI: 1:CAS:528:DC%2BD2cXptFWq
• ISSN: 18813690
• ISSN: 09168958
• NDL BIB ID: 6761049
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6761049
• Web Site: https://www.jstage.jst.go.jp/article/jswe/26/11/26_11_757/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed