"Measurement of endocrine disrupting chemicals in a sewage treatment plant" 

Sunardi¹, Shigeki Masunaga¹, Junko Nakanishi²

¹Yokohama National University
²National Institute of Advanced Industrial Science and Technology

Indonesian Agricultural Sciences Association, Vol.1 pp.60-68 (2002)

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Abstract

Some endocrinc disrpting chemica1s(EDCs) were measured at the main stages of a sewages treatment plant(STP) located along Tama River, Japan. Tbe STP main stages consist of sand-settling tank, sedimentation tank l, aeration tank and sedimentation tank ‡U. 

Estrone(E1), 17ƒÀ-estradiol(E2) and estriol (E3) are the natural EDCs detected in the STP, aside from nonylphenol (NP). E1 concentration of 15 ng/L was detected in the influent and significantly decreased during STP process, then detected in the effluent at less O.21 ng/L. E2 concentration decreased from 17 in the influent to less than O.4l ng/L in the effluent E3 concentration decrcased from 3.6 to 1.2 ng/L. The E2 concentrations were elevated in the aeration tank, indicating the degration of E2 conjugates during aeration process.

Keywords

sewage treatment plant, estrone, estradiol, estriol, endocrine disrupting chemicals