Title :
The Simultaneous Removal of DOC and Ammonia Nitrogen from Surface Water by Hybrid Process
Author :
Jin, Yong-Wei ; Dong, Ya-Mei ; Zhang, Zhen-Jia
Author_Institution :
Sch. of Environ. Sci. & Eng., Shanghai Jiaotong Univ., Shanghai, China
Abstract :
The performance of pilot scale hybrid process of fluidized biofilm process, chemical coagulation and ultrafiltration system for surface water treatment was studied. In order to remove ammonia nitrogen (NH4 +-N) and DOC efficiently, fluidized biofilm process with entrapped nitrifying bacteria pellets and powder activated carbon was applied to the hybrid process. FeCl3ldr6H2O and 7 mg (Fe)/l were determined as optimal chemical coagulation condition at pilot scale treatment. NH4 +-N concentration in the produced water was less than 0.5mg/l at the overall combined process. DOC, UV254 and THMFP removals of 59.0%, 59.8% and 67.7% were also achieved by the overall hybrid process. Fluidized biofilm process contributed 93% NH4 +-N removal and 10% DOC removal. This combined process was highly competitive in comparison to conventional treatment for surface water in NH4 +-N and DOC removal.
Keywords :
ammonia; biotechnology; coagulation; fluidised beds; microorganisms; organic compounds; ultrafiltration; water quality; water resources; water supply; water treatment; FeCl3-H2O; NH3; THMFP measurement; UV254 measurement; chemical coagulation; dissolved organic carbon; fluidized biofilm process; hybrid process; nitrifying bacteria pellets; powder activated carbon; surface water DOC removal; surface water ammonia nitrogen removal; surface water treatment; ultrafiltration system; Biomembranes; Chemical processes; Coagulation; Fluidization; Inductors; Microorganisms; Nitrogen; Powders; Surface treatment; Water pollution; chemical coagulation; fluidized biofilm process; hybrid process; surface water; ultrafiltration;
Conference_Titel :
Environmental Science and Information Application Technology, 2009. ESIAT 2009. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-0-7695-3682-8
DOI :
10.1109/ESIAT.2009.496
