Use of Ozonation and FBT to control THM precursors

Yavich, A. A.; Masten, Susan J.

doi:10.1002/j.1551-8833.2003.tb10342.x

Cited by 23 publications

(9 citation statements)

References 26 publications

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“…In terms of membranes, nanofiltration (NF) has become the membrane of choice in NOM removal. Other combined processes have also emerged to meet a variety of water quality needs, including ozone/biofiltration, which can remove TOC and, consequently, reduce DBP formation (60,61).…”

Section: Improvements In Dbp Precursor Removalmentioning

confidence: 99%

Recent Advances in Disinfection By-Product Formation, Occurrence, Control, Health Effects, and Regulations

Karanfil

Krasner²,

Westerhoff

et al. 2008

ACS Symposium Series

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Since the discovery of disinfection by-products (DBPs) in drinking water in the 1970s and with increasing understanding about their occurrence and health effects, the control of DBP formation has become one of the major issues for the drinking water industry. A significant amount of research has been conducted on trihalomethanes (THMs) and haloacetic acids (HAAs), the two regulated (in the United States [U.S.]) and largest classes of DBPs (on a weight basis). In addition to other measured DBPs, the sum of known DBPs has accounted for 30 to 60% of the total organic halogen (TOX) detected during chlorination, which is the oldest and the most commonly used disinfection technique in water treatment around the world. As a result, the formation and control of THMs and HAAs and other DBPs have been widely researched and discussed in the literature (1-4). However, recent research has shown that there are many emerging DBPs of health concern in drinking waters. The objective of this chapter is to summarize the recent advances in understanding DBP formation, occurrence, control, health effects, and regulations that have occurred mainly within the past five years. It was noteworthy that inorganic DBPs (e.g., bromate, chlorate, chlorite) have received less attention over the past few years as compared to emerging organic DBPs that exhibit high geno-and cytotoxicity. 2

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Section: Improvements In Dbp Precursor Removalmentioning

confidence: 99%

Recent Advances in Disinfection By-Product Formation, Occurrence, Control, Health Effects, and Regulations

Karanfil

Krasner²,

Westerhoff

et al. 2008

ACS Symposium Series

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“…The ozonation byproducts can be easily removed by biofiltration [5,13,43]. The NOM in the effluences of the sand-filtration, mid-ozonation, and BGAC in the pilot-scale test with Yellow River water was characterized by resin adsorption and ultrafiltration.…”

Section: Characteristics Of the Nom After Ozonationmentioning

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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“…Ozonation followed by biological treatment is one of the more promising processes to remove DOM from raw water [14,15]. Due to its high electric potential (2.07 V), ozone can oxidize a broad range of organic chemicals such as protein, aminoacid, aromatic chemicals, and so on [16,17].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of organic material in Huangpu River and treatability with the O3-BAC process

Gao

Sun

et al. 2007

Separation and Purification Technology

101

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Use of Ozonation and FBT to control THM precursors

Cited by 23 publications

References 26 publications

Recent Advances in Disinfection By-Product Formation, Occurrence, Control, Health Effects, and Regulations

Recent Advances in Disinfection By-Product Formation, Occurrence, Control, Health Effects, and Regulations

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

Characteristics of organic material in Huangpu River and treatability with the O3-BAC process

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