Removal of micropollutants in WWTP effluent by biological assisted membrane carbon filtration (BioMAC)

2011 ◽  
Vol 63 (1) ◽  
pp. 72-79 ◽  
Author(s):  
M. Weemaes ◽  
G. Fink ◽  
C. Lachmund ◽  
A. Magdeburg ◽  
D. Stalter ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Complete Removal ◽  
Pilot Scale ◽  
Iodinated Contrast Media ◽  
Biological Activated Carbon ◽  
Iodinated Contrast ◽  
Wwtp Effluent ◽  
Androgenic Activity ◽  
Set Up ◽  
Carbon Filtration

In the frame of the European FP6 project Neptune, a combination of biological activated carbon with ultrafiltration (BioMAC) was investigated for micropollutant, pathogen and ecotoxicity removal. One pilot scale set-up and two lab-scale set-ups, of which in one set-up the granular activated carbon (GAC) was replaced by sand, were followed up during a period of 11 months. It was found that a combination of GAC and ultrafiltration led to an almost complete removal of antibiotics and a high removal (>80%) of most of the investigated acidic pharmaceuticals and iodinated contrast media. The duration of the tests did however not allow to conclude that the biological activation was able to extend the lifetime of the GAC. Furthermore, a significant decrease in estrogenic and anti-androgenic activity could be illustrated. The set-up in which GAC was replaced by sand showed a considerably lower removal efficiency for micropollutants, especially for antibiotics but no influence on steroid activity.

scholarly journals Effect of advanced oxidation on N-nitrosodimethylamine (NDMA) formation and microbial ecology during pilot-scale biological activated carbon filtration

2017 ◽  
Vol 113 ◽  
pp. 160-170 ◽  
Author(s):  
Dong Li ◽  
Ben Stanford ◽  
Eric Dickenson ◽  
Wendell O. Khunjar ◽  
Carissa L. Homme ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Microbial Ecology ◽  
Advanced Oxidation ◽  
Pilot Scale ◽  
Biological Activated Carbon ◽  
Carbon Filtration

Removal of algal taste and odour compounds by granular and biological activated carbon in full-scale water treatment plants

2018 ◽  
Vol 18 (5) ◽  
pp. 1531-1544 ◽  
Author(s):  
Aisha Faruqi ◽  
Milann Henderson ◽  
Rita K. Henderson ◽  
Richard Stuetz ◽  
Brendan Gladman ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Algal Blooms ◽  
Pilot Scale ◽  
Full Scale ◽  
Biologically Active ◽  
Removal Rates ◽  
Biological Activated Carbon ◽  
Treatment Processes ◽  
Water Treatment Plants ◽  
Service Life Modelling

Abstract The occurrence and severity of cyanobacterial and algal blooms in water supplies has been increasing due to the effects of eutrophication and climate change, resulting in more frequent taste and odour (T&O) events. Conventional treatment processes have been found to be inefficient in removing the two most commonly detected algal T&O compounds, geosmin and 2-methylisoborneol (MIB), though granular activated carbon (GAC) and biological activated carbon (BAC) contactors have achieved high T&O removal rates. Literature on the performance of GAC and BAC for T&O removal in full-scale treatment plants, however, is limited. This review collates and assesses pilot-scale and full-scale studies which focus on removal of geosmin and MIB, with the aim of understanding the factors which influence T&O removal and determining knowledge gaps in the use of GAC and BAC. Age and empty bed contact time (EBCT) were found to have a significant impact on GAC performance, with removal efficiency decreasing with increased age and increasing with longer EBCTs. BAC contactors have achieved higher removal rates than non-biologically active GAC contactors and were not impacted by age, EBCT and/or carbon type. From these observations, implementation of BAC for T&O removal would be favourable; however, further investigations are required to understand full-scale performance of BAC and service life modelling.

scholarly journals Microplastics Removal from Treated Wastewater by a Biofilter

Water ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 1085 ◽  
Author(s):  
Fan Liu ◽  
Nadia Nord ◽  
Kai Bester ◽  
Jes Vollertsen
Keyword(s):  
Particle Number ◽  
Treatment Plant ◽  
Complete Removal ◽  
Pilot Scale ◽  
Particle Mass ◽  
Treated Wastewater ◽  
Secondary Effluent ◽  
Global Environmental Issue ◽  
Wwtp Effluent ◽  
Global Environmental

Microplastic (MP) pollution is a global environmental issue, and traditionally treated wastewater has been identified as a source of land-based microplastics into the aquatic environment. This study evaluated the performance of a pilot-scale biofilter to polish wastewater treatment plant (WWTP) effluent before it enters the environment. The filter was divided into four zones, allowing the concentration of microplastics to be followed through the filter. It was fed with secondary effluent from a conventional WWTP in Denmark. The raw effluent from the WWTP contained 917 items m−3 which corresponded to a mass concentration of 24.8 µg m−3. After the top layer of the biofilter, the concentration had decreased to a median value of 197 item m−3 and 2.8 µg m−3, indicating an overall removal efficiency of 79% in terms of particle number and 89% in terms of particle mass. We also observed a tendency that MP of larger size and higher particle mass were more likely to be retained. After the last filtration zone, all MP larger than 100 µm had been removed. The results of this study demonstrate that biofilters are able to lower the MP abundance in treated wastewater significantly, but a complete removal is not ensured, hence some MP, particularly small-sized ones, can still be discharged into the receiving environment.

Removal of nitrogen, phosphorus and other priority (hazardous) substances from WWTP effluent

2006 ◽  
Vol 54 (8) ◽  
pp. 189-195 ◽  
Author(s):  
V. Miska ◽  
H.W.H. Menkveld ◽  
L. Kuijer ◽  
M. Boersen ◽  
J.H.J.M. van der Graaf
Keyword(s):  
Heavy Metals ◽  
Activated Carbon ◽  
Hazardous Substances ◽  
Biological Activated Carbon ◽  
Wwtp Effluent ◽  
Low Concentrations ◽  
Fraunhofer Institute ◽  
Removal Of Heavy Metals ◽  
17Β Estradiol ◽  
Simultaneous Nutrient Removal

More stringent effluent criteria will be required in the near future for the so-called priority substances listed in the Annex of the European Water Framework Directive (WFD) 2000/60/EC. This includes heavy metals, volatile and semi-volatile organic substances, pesticides and polychlorinated biphenyls. The Fraunhofer Institute suggested FHI values for these substances in water. National Dutch legislation, the Vierde Nota WaterHuishouding (NWH) introduced in 1998 ‘maximum tolerable risk concentrations’ (MTR). These include requirements for nutrients: Ptot<0.15 mg/l and Ntot<2.2 mg/l. The MTR values are being used until the FHI values become effective. Investigation into possible effluent polishing techniques is required in order to reach these objectives. During pilot research with tertiary denitrifying multi-media and biological activated carbon filtration at the WWTP Utrecht in the Netherlands, simultaneous nutrient removal to MTR quality was observed. Furthermore, simultaneous removal of heavy metals, 17β-estradiol, bisphenol A and nonylphenols to extreme low concentrations by denitrifying activated carbon filtrated is achieved.

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