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Low concentrations of high prority: pharmaceutical and personal care products (PPCPs); occurrence and high removal at wastewater treatment plant
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering.
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering.
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering.
2006 (English)In: Vatten, ISSN 0042-2886, Vol. 62, no 2, 139-148 p.Article in journal (Other academic) Published
Abstract [en]

Development of advanced analytical tools and analysis of wastewater samples confirmed the presence of residualamount of pharmaceuticals in environment and WWTP effluent in many European countries. Significantamount of compounds (30–90 % of administrated dose of antibiotics) is transported as active substance viaurine. Only some part of taken drug dose is metabolized by organisms and the rest is excreted in changed orunchanged form. Many non-target organisms, that could share some receptors with humans, could be exposedon pharmaceutical activity. Another important issue discussed is the combination of additive, synergistic andantagonistic effect that might reveal in the mixture of pharmaceutically active compounds introduced to theenvironment. The objective of this paper is to give the overview of recent published data concerning PPCPs. Inorder to find the efficient technology for removal of residual amount of pharmaceuticals the studied methodsand solutions are presented. The most interesting removal system is based on membrane technology. Separationof micropollutants onto membrane surface gives satisfactory results in experiments. A polishing step seems tobe also a very attractive technology for treatment of biologically active substances that pass all the precedingsteps in conventional WWTP s.

Place, publisher, year, edition, pages
2006. Vol. 62, no 2, 139-148 p.
Keyword [en]
ecotoxicology, membrane technology, pharmaceutical residues, wastewater
National Category
Water Engineering
Identifiers
URN: urn:nbn:se:kth:diva-7035OAI: oai:DiVA.org:kth-7035DiVA: diva2:11915
Note
QC 20101104Available from: 2007-05-04 Created: 2007-05-04 Last updated: 2010-11-04Bibliographically approved
In thesis
1. Pharmaceutical compounds; a new challenge for wastewater treatment plants
Open this publication in new window or tab >>Pharmaceutical compounds; a new challenge for wastewater treatment plants
2007 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

Analytical analyses conducted at the Himmerfjärden WWTP (285.000 PE connected) identified 70 pharmaceutical compounds belonging to different therapeutic classes. Such organic micropollutants at low detected concentration range of µg - ng l-1 did not affect the treatment processes at WWTP. Results from analytical studies indicated continuous discharge of organic micropollutants to the surface water with a calculated load amounting to 1.51 kg day-1. Metoprolol, carbamazepine and naproxen were chosen for testing different removal methods. Oxygen Uptake Rate (OUR) tests were conducted to assess the bacterial activity of an activated sludge taken from a full scale aeration plant with the presence of selected target compounds.

A semi-technical scale membrane bioreactor ZeeWeed10™, treating final effluent from the Himmerfjärden WWTP (Sweden) was seeded with activated sludge from full scale biological stage. The membrane bioreactor (MBR) system placed after the final treatment appeared to be an insufficient technology for removal of residual amounts of organic micropollutants from WWTP effluents. Batch test studies with activated sludge taken from the membrane bioreactor and with application of granular activated carbon (GAC) filtration resulted in giving an overall assessment of removal efficiency. Metoprolol and carbamazepine tend to be resistant to the biodegradation process and in the dosed high concentration lead to bacterial cell decomposition in the activated sludge. Apparently, removal efficiency for naproxen exceeded the value of 46% with the spiked initial amount of 3.3 mg NAP g-1 MLSS. Application of the GAC filtration proved to be an efficient technique for removal of pharmaceutical compounds from treated wastewater.

Application of the statistical programme Modde7 was a time saving tool in studies of fouling occurrence. The effect of fouling phenomenon, which is a highly limiting factor for MBR performance, was minimised by adjusting the operational parameters as predicted by the Modde7 programme.

Place, publisher, year, edition, pages
Stockholm: KTH, 2007. xiv, 28 p.
Series
Trita-LWR. LIC, ISSN 1650-8629 ; 2037
Keyword
activated sludge, biodegradation, granular activated carbon (GAC), membrane bioreactor (MBR), pharmaceutical compounds, wastewater
National Category
Water Engineering
Identifiers
urn:nbn:se:kth:diva-4347 (URN)978-91-7178-565-7 (ISBN)
Presentation
2007-05-08, Sal V1, KTH, Teknikringen 72, Stockholm, 13:30
Opponent
Supervisors
Note
QC 20101104Available from: 2007-05-04 Created: 2007-05-04 Last updated: 2010-11-04Bibliographically approved

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