Effect of Ozone Dosage for Removal of Model Compounds by Ozone/GAC Treatment

Chang, E. E.; Liang, Chaoyun; Ko, Ya Wen; Chiang, Pen Chi

doi:10.1080/01919510208901626

Cited by 16 publications

(3 citation statements)

References 20 publications

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“…addition (Park et al, 2015;Wang et al, 2015). However, much of the existing information regarding H2O2/O3 optimization has been based on the bench-scale studies (Chang et al, 2002;Li et al, 2012;Mizuno et al, 2011;Parinet et al, 2010). A pilot-scale study is warranted to substantiate the theoretical optimum ratio of 0.35 H2O2:O3 (mg/mg) (Acero and von Gunten, 2001).…”

Section: List Of Figuresmentioning

confidence: 99%

Ozone/peroxide advanced oxidation in combination with biofiltration for taste and odour control and organics removal

Beniwal

Taylor-Edmonds

Armour³

2018

Chemosphere

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The objective of this pilot-scale study was to investigate the effectiveness of incorporating ozone (O) and advanced oxidation (hydrogen peroxide/ozone: HO/O) in combination with biofiltration for taste and odour control, organic carbon removal, and disinfection byproduct (DBP) precursor reduction. Implementation of O and HO/O with and without biofiltration was investigated at pilot-scale in terms of geosmin, 2-methylisoborneol (MIB), and DBP precursor removal efficiency. Two media types (granular activated carbon and anthracite) were compared in conjunction with investigating the impact of pre-oxidation with O (2 mg/L) and varying HO/O mass ratios (0.1, 0.2, 0.35, and 0.5 mg/mg). When O preceded biologically active carbon (BAC) or biologically active anthracite, geosmin removals of 80% and 81%, respectively, were observed at 10 °C; this increased to 89% and 90%, respectively, at 16 °C. Optimal MIB removal (67%) was achieved with 0.1 HO/O (mg/mg) in combination with BAC at 16 °C. In general, geosmin proved to be more amenable to biodegradation than MIB. BAC without pre-oxidation removed 87% geosmin and 85% MIB, at 22 °C. MIB removals decreased to 60% and 46%, respectively at 16 °C and 10 °C. The application of 0.2 HO/O (mg/mg) prior to BAC provided treatment which effectively removed geosmin and MIB. However, in terms of DBP precursor reduction, there was no beneficial impact of HO addition on trihalomethane or haloacetic acid formation potentials.

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Section: List Of Figuresmentioning

confidence: 99%

Ozone/peroxide advanced oxidation in combination with biofiltration for taste and odour control and organics removal

Beniwal

Taylor-Edmonds

Armour³

2018

Chemosphere

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“…The potential of THM formation initially increases as the ozone dose increases and reaches a peak and then decreases. In paper [167] it is show that the value of this peak for different NOC fractions varies from 1.4 to 3.5 mg O 3 /mg of DOC. In this case one observes the value of the HAA formation potential after oxidation of such initial compound as n-hydroxybenzoic acid (~ 10 times higher than for the initial solution i.e.…”

Section: State-of-the-art Approaches To Justify the Technology Of Conmentioning

confidence: 90%

“…On the one hand, such transformation increases the degree of adsorption cleaning and on the other hand-during the ozonation process some intermediate products may also be produced, which are undesirable during adsorption. Therefore, when combining preozonation and adsorption on GAC it is important to establish a clear-cut interrelationship between the ozone dose and GAC adsorption ability [167].…”

Section: State-of-the-art Approaches To Justify the Technology Of Conmentioning

confidence: 99%

Drinking Water: Factors Affecting the Quality of Drinking Water

Гончарук

2014

Drinking Water

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The relative critical overview of indicators, which set norms to the drinking water and are used as background for regulatory instruments of the USA, the EU, the WHO, Ukraine and Russia, has been revealed. The analytical review of current problems in drinking water preparation technology at centralized drinking water treatment plants has been delivered. The role of natural organic compounds of natural origin in drinking water quality has been revealed. The application of different technological measures to prepare high quality drinking water has been analysed and explained. The influence of condition of water distribution system on the drinking water quality has been evaluated. It has been cited the examples of modern technological systems of drinking water treatment. A new concept of supply the population with a quality drinking water has been introduced. It is based on representation the need to consume adequate water by a person, which is genetically safe, comprises no man induced alloys, and is characterized by occurrence of such natural substances and microelements that are easiest to digest for a body from water. KeywordsThe quality of drinking water · International regulatory instruments · Centralized drinking water treatment plants · Modern water treatment technologies · Man induced alloys, natural microelements · A new concept of supply the population with a quality drinking water Ecological and Hygienic Classification of Centralized Drinking Water Supply SourcesIn the Ukraine, the goal of creating and adhering to adequate quality and safety standards for drinking water is guaranteed by law. Legal documents such as the Water Code of Ukraine [1] and the Law of Ukraine "On drinking water and drinking water supply" [2] were written to uphold this goal. Codex found in these documents details a range of specific tasks centered around ecological, sanitary, and hygienic contents namely:• A complex development of interrelated regulatory documents (standards and norms) for ensuring an ecological and sanitary-hygienic safety practice in the field of use and protection of water and water resources;

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