Demonstrating organic contaminant removal in an ozone-based water reuse process at full scale

Blackbeard, Judy; Lloyd, James; Magyar, Mirela Iulia; Mieog, John; Linden, Karl G.; Lester, Yaal

doi:10.1039/c5ew00186b

Cited by 31 publications

(28 citation statements)

References 51 publications

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“…Estrone, triclosan, and carbamazepine were consistently present in the STMWRF filtered effluent and were mitigated/removed to below detection limit after ozonation. All three compounds are known to have high reactivities with ozone and/or hydroxyl radicals (Blackbeard et al, ). Caffeine was detected during one of the three sampling events and was oxidized during ozonation.…”

Section: Resultsmentioning

confidence: 99%

“…TCEP is a flame retardant, it resists oxidation by design. TCEP is expected to be and is found to be resistive to ozone and hydroxyl radical oxidation (Blackbeard et al, ). Study results confirmed this expectation and work by others.…”

Section: Resultsmentioning

confidence: 99%

“…Zhu et al () reported considerable removal of atenolol after ozonation (0.6–1.2 ozone:TOC) and moderate removal after BAC (EBCT = 15 min). However, no significant change in atenolol was observed across biological filters with sand or anthracite media (Blackbeard et al, ; Zhu et al, ). The impact of biofilter media (GAC vs. sand/anthracite) appears to be more pronounced in atenolol removal when compared to other CECs.…”

Section: Resultsmentioning

confidence: 99%

“…Ozone-/biofiltration-based AWT trains have been studied locally and elsewhere (Blackbeard et al, 2015;Bourgin et al, 2018;Glover, Quiñones, & Dickenson, 2018;Knopp, Prasse, Ternes, & Cornel, 2016;Kumar et al, 2017;Lee, Howe, & Thomson, 2012;Maidrand & Ohlinger, 2013;Reungoat et al, 2012;Sun et al, 2018;Sundaram & Emerick, 2010a;Zhu, Wang, & Wieland, 2015). A compilation of CEC removal results from eleven recent wastewater ozone-biofiltration studies from locations around the world is summarized in Table 2.…”

Section: Research Articlementioning

confidence: 99%

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Trace and bulk organics removal during ozone–biofiltration treatment for potable reuse applications

Pagilla

2019

Water Environment Research

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This study investigated impact of ozone/biological activated carbon (BAC) filtration design and operational parameters on contaminants of emerging concern (CEC) and bulk organics removal over 450 days of operation. Two parallel BAC filters with identical media and influent were maintained, each at a different empty bed contact time of 10 and 20 min. This study captured the CEC removal performance of a BAC filter over an extended operational period after treating 65,000 bed volumes. Ozone system was operated at ozone dose to TOC ratio range of 0.9–2. Biofilter with lower EBCT (10 min) and exhausted media resulted in poor removals of Tris(2‐chloroethyl) phosphate (TCEP), perfluorooctanoic acid (PFOA), sucralose, meprobamate, N,N‐diethyl‐m‐toluamide (DEET), and cotinine. Biofilter with higher EBCT (20 min) and remaining adsorptive effects resulted in significant (84% or more) removal of all CECs that were detected in the ozonated effluent. Increasing both ozone dose and BAC EBCT resulted in increased removal of UV absorbance (UVA254). The evaluation of impact of ozone:TOC ratio and BAC EBCT on CEC removal, bulk organics (TOC), and UVA254 performed in this study confirmed the importance of these two parameters on overall success of nonreverse osmosis (RO) potable reuse projects. Practitioner points Ozone–BAC biofiltration is feasible strategy for indirect potable reuse water reclamation. Ozone–BAC empty bed contact time is a critical design parameter. Adsorption and biodegradation are both important mechanisms for trace organic contaminant removal in BAC.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Research Articlementioning

confidence: 99%

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Trace and bulk organics removal during ozone–biofiltration treatment for potable reuse applications

Pagilla

2019

Water Environment Research

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“…These substances have not been encountered in any design process of traditional water and wastewater treatment plants. As Blackbeard et al (2016) observed, there were 91 MP compounds consistently presented in the secondary-treated effluent from Eastern Treatment Plant (Australia). In another survey carried out by Thomaidi et al (2015) in Greece, about 207 organic MPs were detected in different WWTPs, ranging from 1 ng/L to thousands ng/L.…”

Section: Introductionmentioning

confidence: 90%

Multicriteria assessment of advanced treatment technologies for micropollutants removal at large-scale applications

Bui

Ngo

et al. 2016

Science of The Total Environment

148

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With the introduction and discharge of thousands of new micropollutants (MPs) every year, traditional water and wastewater treatment plants may be incapable of tackling them all. With their low concentrations and diversity in nature, MP removal encounters numerous challenges. Although some MPs are effectively eliminated via conventional treatment methods, most of them can easily escape and are retained in the discharged effluent. Therefore, advanced methods such as (i) adsorption, (ii) oxidation and advanced oxidation processes (O3 and O3-based advanced oxidation processes, UV/H2O2), (iii) membrane processes, and (iv) membrane bioreactors, become an inevitable approach. Despite the unsurprisingly vast number of papers on MP treatment available at present, most of these studies were carried out at a laboratory scale while only a few pilot- and full-scale studies have experimented. Nevertheless, an in-depth assessment of real-world MP treatment methods is extremely crucial for practitioners. To date, no paper has been dedicated to look at this issue. Therefore, this paper aims to review these large-scale treatment methods. First, the paper goes through the regulations and standards which deal with MPs in water courses. It will then assess these methods in various case-studies with reference to different criteria towards serving as a reference for further practical applications.

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High Performance Magnetically Separable G‐C₃N₄/γ‐Fe₂O₃/TiO₂ Nanocomposite with Boosted Photocatalytic Capability towards the Cefixime Trihydrate Degradation under Visible‐Light

2020

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A magnetically separable g‐C3N4/γ‐Fe2O3/TiO2 nanocomposite is synthesized as an intensely effectual visible‐light‐driven photocatalyst. It is fully characterized by FT‐IR, XPS, XRD, VSM, DRS, SEM, TEM, BET, EDS, and elemental mapping techniques. Based on the Tauc plot of (αhν)2 vs. hυ, the value of band gap energy for g‐C3N4/γ‐Fe2O3/TiO2 is estimated to be 2.6 eV, which proves the high capability of the catalyst to enhance the photoinduced electron‐holes separation and improves its visible‐light photocatalytic performance. The high photocatalytic activity of this catalyst towards the cefixime trihydrate (CEF) degradation, under visible‐light radiation can be ascribed to the synergistic optical effects between g‐C3N4, γ‐Fe2O3, and TiO2. Using central composite design (CCD) based on response surface methodology (RSM), the maximum degradation efficiency of about 98 % was obtained at the optimal conditions comprising the CEF amount of 20 mg/L, photocatalyst value of 0.04 g/L, irradiation intensity of 9 W/m2, and pH of 5.5, at 90 min. Utilizing an innocuous visible‐light source, almost complete mineralization of CEF (based on TOC analysis), using a very low amount of photocatalyst, applying air as the oxidant, and convenient magnetic separation of the catalyst from the reaction media and its ease of recycling for at least seven consecutive runs are the major highlights of this protocol.

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Demonstrating organic contaminant removal in an ozone-based water reuse process at full scale

Abstract: The 350 ML per d Eastern Treatment Plant (ETP) tertiary facility produces “Class A” water for the city of Melbourne, Australia, which is used for irrigation, dual reticulation and fire fighting.

Cited by 31 publications

References 51 publications

Trace and bulk organics removal during ozone–biofiltration treatment for potable reuse applications

Trace and bulk organics removal during ozone–biofiltration treatment for potable reuse applications

Multicriteria assessment of advanced treatment technologies for micropollutants removal at large-scale applications

High Performance Magnetically Separable G‐C₃N₄/γ‐Fe₂O₃/TiO₂ Nanocomposite with Boosted Photocatalytic Capability towards the Cefixime Trihydrate Degradation under Visible‐Light

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Demonstrating organic contaminant removal in an ozone-based water reuse process at full scale

Abstract: The 350 ML per d Eastern Treatment Plant (ETP) tertiary facility produces “Class A” water for the city of Melbourne, Australia, which is used for irrigation, dual reticulation and fire fighting.

Cited by 31 publications

References 51 publications

Trace and bulk organics removal during ozone–biofiltration treatment for potable reuse applications

Trace and bulk organics removal during ozone–biofiltration treatment for potable reuse applications

Multicriteria assessment of advanced treatment technologies for micropollutants removal at large-scale applications

High Performance Magnetically Separable G‐C3N4/γ‐Fe2O3/TiO2 Nanocomposite with Boosted Photocatalytic Capability towards the Cefixime Trihydrate Degradation under Visible‐Light

Contact Info

Product

Resources

About

High Performance Magnetically Separable G‐C₃N₄/γ‐Fe₂O₃/TiO₂ Nanocomposite with Boosted Photocatalytic Capability towards the Cefixime Trihydrate Degradation under Visible‐Light