Reevaluation of Granular‐Carbon Filters for Taste and Odor Control

Abstract

The availability of regenerable granular activated carbon makes it possible to convert this laboratory technique for producing superior quality water into an economic, practical plant‐scale procedure for processing drinking water in public systems. A “regenerable” activated carbon is capable of being reactivated to restore its adsorptive capacity lost during use. Such regenerable activated carbons can be used over and over again.

Application of low-cost adsorbents for dye removal – A review

“…The activated carbons which are used as adsorbents, not only remove different types of dyes (Al-Degs et al, 2001;DiGiano and Natter, 1977;Pelekani and Snoeyink, 2000;Walker and Weatherley, 1999), but also other organic and inorganic pollutants such as metal ions (Carrott et al, 1998(Carrott et al, , 1997Gabaldó n et al, 2000;Kuennen et al, 1992;Macias-Garcia et al, 1993), phenols (Carrott et al, 2005;Caturla et al, 1988;Mourao et al, 2006;Paprowicz, 1990;Zogorski et al, 1976), pesticides (Hu et al, 1998;Pirbazari et al, 1991;Pirbazari and Weber Jr., 1984), chlorinated hydrocarbons (Urano et al, 1991), humic substances (Lee et al, 1983), PCBs (Pirbazari et al, 1992), detergents (Bele et al, 1998;Malhas et al, 2002), organic compounds which cause taste and odour (Flentje and Hager, 1964;Lalezary et al, 1986) and many other chemicals and organisms (Annesini et al, 1987;Carrott et al, 2000;Donati et al, 1994;Giusti et al, 1974;McKay et al, 1985a;Najm et al, 1993;Saito, 1984;Smith, 1991). It is well known that adsorption by activated carbon is an effective and commercially applicable method for removing colour and other pollutants from textile and dye wastes.…”

Dual Water Systems

“…Hagar and Flentje 43 have reported on the performance of activated-carbon filters, which have demonstrated their ability to remove odors that could not have been practically removed by other means.…”

Carbon Bed Design Criteria Study at Nitro, W.Va.

“…Recently published articles 1,2 have discussed most of the advantages and disadvantages of carbon beds. Two important points seem to be that: (1) more efficient use can be made of carbon in the bed form than in the slurry form; and (2) there is no need to continually check for the proper dose with carbon beds. The former becomes more significant as the amount of organic matter to be removed increases; the latter is more significant when the amount of organic matter fluctuates rapidly.…”