Removal of geosmin and 2-methylisoboneol (2-MIB) by membrane system combined with powdered activated carbon (PAC) for drinking water treatment

Kim, Chansik; Lee, Sueng Il; Hwang, Sung-Kwan; Cho, Myoungsu; Kim, Han-Seung; Noh, Sung Hyun

doi:10.1016/j.jwpe.2014.09.006

Cited by 35 publications

(13 citation statements)

References 30 publications

(37 reference statements)

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“…6 Granular activated carbon (GAC) filtration is a common component of drinking water treatment plants (DWTPs) that can effectively remove NOM from drinking water as well as trace organic contaminants, including pesticides, tasteand odor-causing compounds (in particular geosmin and 2-MIB), and reduce DBP precursors. 7,8 Owing to their high adsorption capacity, GAC filters remove small-to intermediate-sized humic-like NOM fractions. 9,10 However, the adsorption capacity of new GAC diminishes rapidly, and GAC filters convert naturally to biologically activated carbon (BAC) filters over time.…”

Section: Introductionmentioning

confidence: 99%

Partial renewal of granular activated carbon biofilters for improved drinking water treatment

Moona

Murphy

Bondelind

et al. 2018

Environ. Sci.: Water Res. Technol.

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Section: Introductionmentioning

confidence: 99%

Partial renewal of granular activated carbon biofilters for improved drinking water treatment

Moona

Murphy

Bondelind

et al. 2018

Environ. Sci.: Water Res. Technol.

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“…Membrane filtration is also effective for PAC, though the membrane module and process design should be engineered to accommodate PAC presence (Chang et al, 2005;Kim et al, 2005;Gai & Kim, 2007;Damayanti et al, 2011;Khan et al, 2011). When using membranes to remove S-PAC, a cake layer is formed from the accumulation of particles on the membrane surface.…”

Section: Introductionmentioning

confidence: 99%

Superfine powdered activated carbon (S-PAC) coatings on microfiltration membranes: Effects of milling time on contaminant removal and flux

Amaral

Partlan

et al. 2016

Water Research

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In microfiltration processes for drinking water treatment, one method of removing trace contaminants is to add powdered activated carbon (PAC). Recently, a version of PAC called superfine PAC (S-PAC) has been under development. S-PAC has a smaller particle size and thus faster adsorption kinetics than conventionally sized PAC. Membrane coating performance of various S-PAC samples was evaluated by measuring adsorption of atrazine, a model micropollutant. S-PACs were created in-house from PACs of three different materials: coal, wood, and coconut shell. Milling time was varied to produce S-PACs pulverized with different amounts of energy. These had different particles sizes, but other properties (e.g. oxygen content), also differed. In pure water the coal based S-PACs showed superior atrazine adsorption; all milled carbons had over 90% removal while the PAC had only 45% removal. With addition of calcium and/or NOM, removal rates decreased, but milled carbons still removed more atrazine than PAC. Oxygen content and specific external surface area (both of which increased with longer milling times) were the most significant predictors of atrazine removal. S-PAC coatings resulted in loss of filtration flux compared to an uncoated membrane and smaller particles caused more flux decline than larger particles; however, the data suggest that NOM fouling is still more of a concern than S-PAC fouling. The addition of calcium improved the flux, especially for the longer-milled carbons. Overall the data show that when milling S-PAC with different levels of energy there is a tradeoff: smaller particles adsorb contaminants better, but cause greater flux decline. Fortunately, an acceptable balance may be possible; for example, in these experiments the coal-based S-PAC after 30 min of milling achieved a fairly high atrazine removal (overall 80%) with a fairly low flux reduction (under 30%) even in the presence of NOM. This suggests that relatively short duration (low energy) milling is viable for creating useful S-PAC materials applied in tandem with microfiltration.

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“…Toz aktif karbon (TAK), içme suyu arıtımında sıklıkla tercih edilen bir fizikokimyasal arıtım yöntemidir [72]. Toz aktif karbon ile Geosmin ve 2-MIB gibi tat ve koku oluşturan bileşiklerin giderilmesinin incelendiği birçok çalışmanın [11], [41], [73], [74] yanısıra TAK ile kombine sistemlerin denendiği birçok laboratuvar, pilot ölçekli ve tam ölçekli çalışma [75]- [78] bulunmaktadır.…”

Section: Toz Aktif Karbonunclassified

Evaluation of algae related taste and odor problem in drinking water

Fakıoğlu¹,

Karpuzcu²,

Öztürk³

2018

Pamukkale J Eng Sci

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İçme suyu, su kaynağından tüketici musluğuna ulaştırılana kadar birçok aşamadan geçmektedir. Suyun kalitesi; su kaynağındaki su kalitesine, arıtma tesisinde uygulanan proseslere ve su dağıtım şebekesinin durumuna bağlıdır. Arıtılmış suda istenmeyen tat ve koku, tüketicideki içilebilir su algısını etkilemekte ve tüketicinin musluk suyu tüketimi ile sağlık riskini ilişkilendirmesine sebep olabilmektedir. Bu durum, su temini tesislerine olan tüketici güveninin azalmasına yol açabilmektedir. Söz konusu sorunun çözümü için su otoritelerince sorunun kaynağı araştırılmakta, buna eş zamanlı olarak arıtma tesislerine kolay entegre edilebilecek sistemler üzerinde çalışılmaktadır. Bu bağlamda, havzada sorunun kaynağının tespiti ve sonrasında alınacak önlemler büyük önem taşımaktadır. Ayrıca su arıtma tesislerinde tesis işletiminden kaynaklanan tat ve kokunun önüne geçilmeye çalışılmakta, bunun yanısıra 10 ng/L konsantrasyonun altında bile insanlar tarafından algılanabilen 2-MIB ve Geosmin bileşiklerinin oksidasyon, adsorpsiyon veya biyofiltrasyon gibi proseslerle giderimi incelenmektedir. Öte yandan, arıtılarak şebekeye verilen suda biyolojik aktiviteden veya dezenfeksiyon yan ürün oluşumundan kaynaklanan tat ve koku oluşumu da önlenmelidir. Bu çalışmada, suyun havzadan musluğa yolculuğu boyunca suda oluşabilecek tat ve koku probleminin etmenleri ve bu soruna yönelik çözüm yolları incelenmiştir. Source water goes through several processes before reaching to the customer's tap. Quality of water which flows through the tap is directly related to the water quality in the reservoir, processes used in the drinking water treatment plant and the condition of the present distribution system. Taste and odor in the treated water affects the perception of the drinking water for the customers and causes them to relate it with health risks. This results with a decline in consumer reliance to the water supply system. Water authorities are not only searching for the cause of the problem, but also trying to find a solution which can be integrated to the existing Water Treatment Plant system. In this context, problems related with watershed should be determined and precautions should be taken based on these issues. In WTP's, taste and odor problem caused by wrong plant operations should be avoided while treatment processes such as oxidation, adsorption and biofiltration processes should be tested for the removal of 2-MIB and Geosmin which can be percieved by the humanbeings even at 10 ng/L. Also, taste and oodor occurance in treated water caused by biological activity or DBP's in distribution systems should be avoided. In this study, potential causes of taste and odor occurance during the travel of water from reservoir to consumer's tap is stated along with the solutions.

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Removal of geosmin and 2-methylisoboneol (2-MIB) by membrane system combined with powdered activated carbon (PAC) for drinking water treatment

Cited by 35 publications

References 30 publications

Partial renewal of granular activated carbon biofilters for improved drinking water treatment

Partial renewal of granular activated carbon biofilters for improved drinking water treatment

Superfine powdered activated carbon (S-PAC) coatings on microfiltration membranes: Effects of milling time on contaminant removal and flux

Evaluation of algae related taste and odor problem in drinking water

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