Denitrifying Sulfide Removal with Granule Sludge

• Main Author: Juliananda
• Other Authors: Duu-Jong Lee
• Format: Others
• Language: en_US
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/a4etfn

碩士 === 國立臺灣科技大學 === 化學工程系 === 100 === Effect of sulfide and nitrate on both Denitrifying Sulfide Removal (DSR) process and methanogenic activity in batch assays using granule sludge and effect of Hydraulic Retention Time (HRT) on sulfide removal in anaerobic DSR process with continuous UASB using granule sludge investigated here. The highest level of sulfide 400 mg S/L with 500 mg N/L can be removed after 8 h and nitrate was completely consumed after 21 h. However, addition of nitrate to methanogenic culture resulting in a lag time of methane production which increased as increasing concentration of nitrate. Both nitrate and sulfide addition seriously inhibits methanogenesis. HRT of 12 hours has better performance compared to HRT of 1 day on sulfide removal. All sulfides was decreased to 9.75 mg S/L after 12 hours and kept stable below 10 mg S/L.