The use of ozone and associated oxidation processes in drinking water treatment

Camel, Valérie; Bermond, Alain

doi:10.1016/s0043-1354(98)00130-4

Cited by 377 publications

(162 citation statements)

References 96 publications

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“…However, the ozone cannot mineralize organic carbon with a traditional water treatment dose (less than 4 mg L −1 ); thus, a high removal of the THMs precursor cannot be expected by simple ozonation. Ozone can cleave the unsaturated bonds in aromatic moieties that are found in NOM, which makes the organic molecules smaller, more oxidized, and more biodegradable; thus, refractory NOM transforms to the biodegradable form, i.e., biodegradable dissolved organic carbon (BDOC) [14][15][16][17][18]. BDOC that is produced by ozonation can be removed in subsequent biological treatments.…”

Section: Introductionmentioning

confidence: 99%

THMs precursor removal by an integrated process of ozonation and biological granular activated carbon for typical Northern China water

Yan

Wang

et al. 2010

Separation and Purification Technology

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a b s t r a c tThe removal of trihalomethanes (THMs) precursor and natural organic matter (NOM) by an integrated process of ozonation and biological granular activated carbon filtration (BGAC) as a deep water treatment process was investigated in pilot-scale tests. A comparison is also made with granular activated carbon filtration (GAC). The characteristics of the THMs precursor and the THMs formation potential (THMFP) were investigated by resin adsorption and ultrafiltration. The results show that the integrated process of ozonation and BGAC (O 3 /BGAC) is obviously superior to GAC for the removal of the THMs precursor because a considerable synergetic effect occurs between the ozonation and the BGAC. Although ozonation can limitedly remove dissolved organic carbon (DOC), it can cut down the molecular weight of the NOM, change its polarity, decrease the THMFP, and obviously enhance the efficiency of the BGAC. The BGAC could efficiently remove the hydrophobic base (HoB), hydrophobic neutral (HoN), weakly hydrophobic acid (WHoA), and low molecular weight fraction DOC that was produced in the optimized ozonation process. However, the BGAC stage should be carefully controlled to avoid the leakage of microbes and/or the products of metabolism because it has a high risk for producing THMs in following chlorination process.

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Section: Introductionmentioning

confidence: 99%

THMs precursor removal by an integrated process of ozonation and biological granular activated carbon for typical Northern China water

Yan

Wang

et al. 2010

Separation and Purification Technology

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“…and did not change appreciably thereafter. This can probably be explained by the fact that some organic compounds are more susceptible to oxidation than others, while some are only partially oxidized (Camel and Bermond, 1998). Although, Ozone itself is a highly oxidizing agent, even then various pH values have a large effect on COD removal, which increases at higher pH values (Azbar et al, 2004).…”

Section: Advanced Oxidation Of Raw Textile Effluent Ozonationmentioning

confidence: 99%

“…The UV/H 2 O 2 systems generate hydroxyl radicals (OH•), which are highly powerful oxidizing species. Hydroxyl radicals can oxidize organic compounds (RH) producing organic radicals (R•), which are highly reactive and can be further oxidized (Baxendale et al, 1957;Bolton et al, 1996;Camel and Bermond, 1998;Catalkaya et al, 2003). Almost 700,000 tons of approximately 10,000 types of dyes and pigments are produced annually worldwide, of which about 20% are assumed to be discharged as industrial effluent during the textile dyeing processes.…”

Section: Introductionmentioning

confidence: 99%

Decolorization and removal of cod and bodfrom raw and biotreated textile dye bath effluent through advanced oxidation processes (AOPS)

Ali

Shafeeq

Butt

et al. 2008

Braz. J. Chem. Eng.

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-In this paper, a comparative study of the treatment of raw and biotreated (upflow anaerobic sludge blanket, UASB) textile dye bath effluent using advanced oxidation processes (AOPs) is presented. The AOPs applied on raw and biotreated textile dye bath effluent, after characterization in terms of COD, colour, BOD and pH, were ozone, UV, UV/H 2 O 2 and photo-Fenton. The decolorization of raw dye bath effluent was 58% in the case of ozonation. However it was 98% in the case of biotreated dye bath effluent when exposed to UV/H 2 O 2 . It is, therefore, suggested that a combination of biotreatment and AOPs be adopted to decolorize dye bath effluent in order to make the process more viable and effective. Biodegradability was also improved by applying AOPs after biotreatment of dye bath effluent.

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“…[12,13] It is effective for ozone to sterilize, decrease chromaticity and smell, increase the biodegradability of refractory organics and improve the flocculent effect with its strong oxidation characteristics which is due to the high oxidation potential (2.08 V). [14][15][16] However, in the process of ozone generating, the high consumption of energy and low concentration of ozone limited the application in wastewater treatment in industry, so to improve the efficiency of ozone generation is the key to gain a broad prospect of applications in wastewater treatment of ozonation technology. At present, the research in ozone generator mainly focuses on the following aspects: (1) The power system turns high voltage power frequency to medium voltage high frequency or uses the high-voltage bipolar pulsed corona etc.…”

Section: Introductionmentioning

confidence: 99%

Degradation of Phenol in Wastewater with Ozone Produced by Self-design Ozone Generator

Wang

Zhong

et al. 2016

MATEC Web Conf.

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Abstract. The optimized tube's structure of the self-design ozone generator was made with the double dielectric inner electrode and small metal cones were embedded in the outside electrode. This ozone generator was used for the degradation of phenol in wastewater. The research was studied from ozone gas flow rate, reaction time, the initial pH and concentration of the phenol in wastewater. In addition, the article also discusses the reaction mechanism of ozone degraded the phenol in wastewater. The results illustrate that the ozone concentration of self-design ozone generator under the pure oxygen flux (1.0 L/min) were 7.06 mg/L, compared with the unoptimized ozone, the optimized ozone generator's efficiency was improved 56.89%; the phenol removal rate was increased as the initial pH increased in wastewater, when pH was 12, the phenol removal rate was 80.17%; GC-MS analysis was adopted to analyze and determine the phenol intermediates. The results illustrate that the major oxidation degradation products of phenol may be p-benzoquinone benzenequinone, 4-cyclopentene-1, 3-dione and diacetone alcohol.

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The use of ozone and associated oxidation processes in drinking water treatment

Cited by 377 publications

References 96 publications

THMs precursor removal by an integrated process of ozonation and biological granular activated carbon for typical Northern China water

THMs precursor removal by an integrated process of ozonation and biological granular activated carbon for typical Northern China water

Decolorization and removal of cod and bodfrom raw and biotreated textile dye bath effluent through advanced oxidation processes (AOPS)

Degradation of Phenol in Wastewater with Ozone Produced by Self-design Ozone Generator

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