Studies on the Removal of AOX from Bleached Kraft Mill Effluent with Bark Boiler Ash
نویسندگان
چکیده
A laboratory study was carried out to determine the effect of bark boiler ash on AOX concentration in bleach plant effluent. The removal of A O X was found not to be significant at typical daily discharge rates of boiler ash. To remove significant amounts of AOX, extremely large quantities of ash were required. When incremental quantities of ash were added to the bleach plant effluent, an increase in effluent pH was noted. The role of increase alkalinity in degrading A O X was con firmed by increasing the p H with sodium hydroxide. A O X is also degraded by increasing the effluent temperature.
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