정수장별 탈수 슬러지의 총인 흡착능 비교

Title
정수장별 탈수 슬러지의 총인 흡착능 비교
Other Titles
Comparison of Adsorption Capacity of Total Phosphorus to Dewatered Sludge of Water Purification Plants
Author(s)
서정인
Keywords
dewatered sludges; T-P adsorption capacity; sulfate; chloride aluminum; Langmuir isotherm
Issue Date
201210
Publisher
한국수처리학회
Citation
한국수처리학회지, v.20, no.5, pp.61 - 69
Abstract
This study aims to compare the maximum total phosphorus adsorption capacity(MPAC) of dewatered sludges, which were generated from four purification plants for the adsorption of T-P from effluent of municipal sewage treatment plant. The MPAC from the Langmuir isotherm plot was ranged from a low of 2.3 mg T-P/g sludge(P-3 sludge) to a high of 7.7 mg T-P/g sludge(P-4 sludge) for potassium dihydrogen phosphate solution(PDP). In the effluent of municipal sewage treatment plant, the MPAC showed a similar to MAPC for PDP. The value of MPAC lower in P-2 and P-3 sludges, which were conditioned with polyacrylamide (anionic charge) than in P-1 and P-4 sludges, indicating that the polyacrylamide will affect sludge characteristics and accordingly affect the T-P adsorption capacity. Meanwhile, the P-3 sludge has the highest aluminum content, followed by P-4, P-1 and P-2. The highest MPAC was obtained in P-4 sludge for potassium dihydrogen phosphate solution and effluent of municipal sewage treatment plant. Although P-3 sludge was contained about 116g aluminum/kg sludge which was higher than 40% in P-2 sludge, the MPAC was lowest. However, the MPAC highly dependent on the aluminum content in dewatered sludges except the P-3 sludge. Also, during the adsorption process of T-P, the decrease of T-P concentration in solution accompanied with an increase in pH and concentrations of anion such as sulfate and chloride. The results indicated that ligand-exchange is shown to be the dominating mechanism of T-P onto the dewatered sludges.
URI
http://hdl.handle.net/YU.REPOSITORY/27076
ISSN
1225-7192
Appears in Collections:
공과대학 > 도시공학과 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE