The Effect of Anionic Surfactant Concentration
on Activated Sludge Condition and Phosphate
Release in Biological Treatment Plant

Alina Katarzyna Dereszewska; Stanislaw Cytawa; Renata Tomczak-Wandzel; Krystyna Medrzycka

doi:10.15244/pjoes/28640

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1/2015 vol. 24

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ORIGINAL RESEARCH

The Effect of Anionic Surfactant Concentration on Activated Sludge Condition and Phosphate Release in Biological Treatment Plant

Alina Dereszewska¹, Stanisław Cytawa², Renata Tomczak-Wandzel³, Krystyna Medrzycka⁴

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¹Department of Chemistry and Industrial Commodity Science, Gdynia Maritime University,
Morska 83, 81-225 Gdynia, Poland
²‘Swarzewo’ Wastewater Treatment Plant, Władysławowska 84, 84-120 Władysławowo, Poland
³Aquateam COWI AS, Hasleveien Str. 10, 0571 Oslo, Norway
⁴Chemical Faculty, Gdansk University of Technology (GUT), Narutowicza 11/12, 80-233 Gdańsk, Poland

Submission date: 2014-05-28

Final revision date: 2014-07-29

Acceptance date: 2014-08-03

Publication date: 2015-02-06

Pol. J. Environ. Stud. 2015;24(1):83-91

DOI: https://doi.org/10.15244/pjoes/28640

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Citations (50)

KEYWORDS

activated sludge; anionic surfactant, phosphorous release; respirometric activity

activated sludge

anionic surfactant

phosphorous release

respirometric activity

TOPICS

ABSTRACT

This paper discusses the influence of a wide range of anionic surfactant concentrations on activated sludge. Linear alkylbenzene sulphonate (LAS) was chosen as an example of a commonly used anionic surfactant. The fate of the surfactant during biological treatment of wastewater was tested. The effect of surfactant on glucose and starch removal was studied. It has been found that in the case of glucose the removal was independent of LAS concentration, while in the case of starch it was incomplete at high surfactant loads (above 15 mg·(g·dss)^-1). The study established that surfactants can activate or inhibit microorganism activity, depending on surfactant concentration. LAS loads up to 3 mg·(g·dss)^-1 positively stimulate the removal of COD, phosphorus release and the respirometric activity of the sludge. LAS loads higher than 15 mg·(g·dss)^-1 inhibit respiration of activated sludge bacteria and decrease phosphorus removal. It also affects the morphology of activated sludge flocs, causing their fragmentation and lysis of protozoa cells.

CONFLICT OF INTEREST

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

CITATIONS (50):

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Chemosphere

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