Study on Purification of Steam from Sludge Thermal Drying by Adsorption of Activated Carbon
SUN Shaoling
SHENG Yanqing
SUN Qiyao
ZHENG Meng
LI Zhaoran
SUN Xiangyu
Abstract：Relating to the steam generated from the sludge thermal drying process,which was treated by activated carbon adsorption,thus removing COD and NH3 in the condensation water,this paper described the experimental study focusing on COD and NH3-N removal as well as the influence of polyacrylamide (PAM) that had been added into sludge during the dewatering process on NH3-N concentration in condensation water.Results of the experiments showed that addition of PAM made merely 3％ contribution to NH3-N concentration of condensation water,while the COD removal efficiency in condensation water was notable-as the dosage of activated carbon was 30 g/L,COD concentration was less than 50 mg/L (removal rate:98％),in compliance with Class 1 of the relevant state Wastewater Discharge Standard (GB 8978-1996),while the dosage of activated carbon added to 45 g/L,the removal rate of NH3-N in condensed water would be more than 70％.
Keywords：activated carbon adsorptionsludge thermal dryingcondensation watersteam
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 118-122 )