American Society of Civil Engineers


Characteristics of Nitrogen and Organic Substance Removal by Bioreactor with Novel Carriers


by Yan Zhang, (Beijing Key Lab of Water Quality Science and Water Environmental Restoration Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China), Qiu-fang Chen, (Beijing Key Lab of Water Quality Science and Water Environmental Restoration Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China), Yan Guo, (Beijing Key Lab of Water Quality Science and Water Environmental Restoration Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China), Yu-hua Bai, (Beijing Key Lab of Water Quality Science and Water Environmental Restoration Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China), Yong-sheng Wang, (Fuzhou City Construction Design & Research Institute, China), Toichiro Koyama, (NET Co.Ltd., Japan), and Jie Zhang, (Beijing Key Lab of Water Quality Science and Water Environmental Restoration Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China)
Section: Research and Development, pp. 1852-1862, (doi:  http://dx.doi.org/10.1061/41073(361)195)

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Document type: Conference Proceeding Paper
Part of: ICPTT 2009: Advances and Experiences with Pipelines and Trenchless Technology for Water, Sewer, Gas, and Oil Applications
Abstract: The performance of organics and nitrogen removal as well as sludge reduction were investigated in a novel catching bed biofilm reactor which applies to decentralized wastewater treatment. The results indicate that the average removal rate of COD reached to 81.7% with different hydraulic retention time (HRT); Even HRT was only 2.94h, the average volumetric loading of NH4+-N and TN were 0.65 kg/(m3·d) and 0.81 kg/(m3·d), the removal efficiencies of NH4+-N and TN reached the climax about 74.7% and 65.2%. Protozoa and metazoan were observed on the biofilm and suspended sludge. The sludge yield was roughly achieved as 0.1465Kg MLSS/KgCODremoved, which was only about 50% of the conventional aerobic processes.


ASCE Subject Headings:
Nitrogen
Organic matter
Biological processes
Sludge
Biofilm