Seasonal movement of trace-element discharge in a typical south-Indian suburban community

Derrick Ian Joshua, Sumith Abeykoon, Izumi Watanabe, Lucyna Paszek, Keshava Balakrishna, Masato Akiba, Keerthi Siri Guruge

Research output: Contribution to journalArticle

Abstract

Four conventional activated sludge sewage treatment plants (STPs) in Southern India were chosen to investigate the occurrence of major ions and trace metals in dissolved fraction of the wastewater. Samples were collected from inlet and outlet of STPs during the pre-monsoon and monsoon seasons. Except for a few elements (Mn, Mo and Ni), the concentrations of the rest increased at the outlet of STPs, suggesting that there is an addition of these elements during the treatment process. The increase in concentrations at the STP outlet ranged from 1.25 times for Mn to 3,254 times for Ag during the pre-monsoon. In the monsoon, the increase ranged from 1.75 (Fe) to 1,510 (Ag). This suggests that there is a substantial anthropogenic input of these elements as they pass through the treatment process. Removal rates of elements in STPs also varied. 59% of Mn was removed during the treatment process during pre-monsoon as compared to 67% removal during monsoon.

Original languageEnglish
Pages (from-to)1035-1047
Number of pages13
JournalWater Science and Technology
Volume77
Issue number4
DOIs
Publication statusPublished - 01-02-2018

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Sewage treatment plants
Trace elements
sewage treatment
monsoon
trace element
Wastewater
trace metal
activated sludge
Ions
wastewater
ion

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Water Science and Technology

Cite this

Joshua, Derrick Ian ; Abeykoon, Sumith ; Watanabe, Izumi ; Paszek, Lucyna ; Balakrishna, Keshava ; Akiba, Masato ; Guruge, Keerthi Siri. / Seasonal movement of trace-element discharge in a typical south-Indian suburban community. In: Water Science and Technology. 2018 ; Vol. 77, No. 4. pp. 1035-1047.
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Joshua, DI, Abeykoon, S, Watanabe, I, Paszek, L, Balakrishna, K, Akiba, M & Guruge, KS 2018, 'Seasonal movement of trace-element discharge in a typical south-Indian suburban community', Water Science and Technology, vol. 77, no. 4, pp. 1035-1047. https://doi.org/10.2166/wst.2017.618

Seasonal movement of trace-element discharge in a typical south-Indian suburban community. / Joshua, Derrick Ian; Abeykoon, Sumith; Watanabe, Izumi; Paszek, Lucyna; Balakrishna, Keshava; Akiba, Masato; Guruge, Keerthi Siri.

In: Water Science and Technology, Vol. 77, No. 4, 01.02.2018, p. 1035-1047.

Research output: Contribution to journalArticle

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