Clay–starch combination for micropollutants removal from wastewater treatment plant effluent

2016 ◽  
Vol 73 (7) ◽  
pp. 1719-1727 ◽  
Author(s):  
M. F. Mohd Amin ◽  
S. G. J. Heijman ◽  
L. C. Rietveld
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Experimental Studies ◽  
Treatment Plant ◽  
Cost Effective ◽  
Treatment Alternative ◽  
Cationic Starch ◽  
Naturally Occurring ◽  
Cost Effective Treatment ◽  
Wastewater Treatment Plant Effluent

In this study, a new, more effective and cost-effective treatment alternative is investigated for the removal of pharmaceuticals from wastewater treatment plant effluent (WWTP-eff). The potential of combining clay with biodegradable polymeric flocculants is further highlighted. Flocculation is viewed as the best method to get the optimum outcome from clay. In addition, flocculation with cationic starch increases the biodegradability and cost of the treatment. Clay is naturally abundantly available and relatively inexpensive compared to conventional adsorbents. Experimental studies were carried out with existing naturally occurring pharmaceutical concentrations found and measured in WWTP-eff with atrazine spiking for comparison between the demineralised water and WWTP-eff matrix. Around 70% of the total measured pharmaceutical compounds were removable by the clay–starch combination. The effect of clay with and without starch addition was also highlighted.

scholarly journals Persulfate mediated solar photo-Fenton aiming at wastewater treatment plant effluent improvement at neutral PH: emerging contaminant removal, disinfection, and elimination of antibiotic-resistant bacteria

2021 ◽  
Author(s):  
Maria Clara V. M. Starling ◽  
Elizângela P. Costa ◽  
Felipe A. Souza ◽  
Elayne C. Machado ◽  
Juliana Calábria de Araujo ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Resistant Bacteria ◽  
Antibiotic Resistant Bacteria ◽  
Antibiotic Resistant ◽  
E Coli ◽  
Effluent Quality ◽  
Neutral Ph ◽  
Wastewater Treatment Plant Effluent

AbstractThis work investigated an innovative alternative to improve municipal wastewater treatment plant effluent (MWWTP effluent) quality aiming at the removal of contaminants of emerging concern (caffeine, carbendazim, and losartan potassium), and antibiotic-resistant bacteria (ARB), as well as disinfection (E. coli). Persulfate was used as an alternative oxidant in the solar photo-Fenton process (solar/Fe/S2O82−) due to its greater stability in the presence of matrix components. The efficiency of solar/Fe/S2O82− at neutral pH using intermittent iron additions is unprecedented in the literature. At first, solar/Fe/S2O82− was performed in a solar simulator (30 W m−2) leading to more than 60% removal of CECs, and the intermittent iron addition strategy was proved effective. Then, solar/Fe/S2O82− and solar/Fe/H2O2 were compared in semi-pilot scale in a raceway pond reactor (RPR) and a cost analysis was performed. Solar/Fe/S2O82− showed higher efficiencies of removal of target CECs (55%), E. coli (3 log units), and ARB (3 to 4 log units) within 1.9 kJ L−1 of accumulated irradiation compared to solar/Fe/H2O2 (CECs, 49%; E. coli, 2 log units; ARB, 1 to 3 log units in 2.5 kJ L−1). None of the treatments generated acute toxicity upon Allivibrio fischeri. Lower total cost was obtained using S2O82− (0.6 € m−3) compared to H2O2 (1.2 € m−3). Therefore, the iron intermittent addition aligned to the use of persulfate is suitable for MWWTP effluent quality improvement at neutral pH.

Inactivation of Clostridium perfringens, Total Coliforms, and Escherichia coli by UV/H2O2 in Wastewater Treatment Plant Effluent

2016 ◽  
Vol 19 (1) ◽  
Author(s):  
José Roberto Guimarães ◽  
Regiane Aparecida Guadagnini ◽  
Regina Maura Bueno Franco ◽  
Luciana Urbano dos Santos
Keyword(s):  
Escherichia Coli ◽  
Wastewater Treatment ◽  
Clostridium Perfringens ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Total Coliforms ◽  
Wastewater Treatment Plant Effluent

AbstractThis study evaluated the effectiveness of H

Inactivation of Enterococcus faecalis in simulated wastewater treatment plant effluent by solar photo-Fenton at initial neutral pH

2013 ◽  
Vol 209 ◽  
pp. 195-200 ◽  
Author(s):  
E. Ortega-Gómez ◽  
B. Esteban García ◽  
M.M. Ballesteros Martín ◽  
P. Fernández Ibáñez ◽  
J.A. Sánchez Pérez
Keyword(s):  
Wastewater Treatment ◽  
Enterococcus Faecalis ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Neutral Ph ◽  
Simulated Wastewater ◽  
Wastewater Treatment Plant Effluent
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