固定化硝化细菌去除水体中氨氮的研究

Journal of Guangdong University of Technology ›› 2006, Vol. 23 ›› Issue (2): 29-33.

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Study on Removing Ammonium Nitrogen from Wastewater by Immobilized Microorganism

(1.Faculty of Environment Science and Technology,Guangdong University of Technology,Guangzhou 510090,China; 2.Zhujiang Aquiculture Academy,Guangzhou 510380,China;3.Faculty of Material,Northwestern Polytechnical University,Xi’an 710072,China;4.Faculty of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510090,China;5.Experiment Center,Guangdong University of Technology,Guangzhou 510090,China)

Online:2006-04-06 Published:2006-04-06

Abstract

Abstract: A technics used to efficiently remove NH+4-N in the water treatment is studied with the carrier of PVA entrapping nitrobacteria in this paper.It is reported that 1% sodium alginate,4% SiO2,0.3% CaCO3 are the good additives for PVA beads immobilized nitrifying bacteria by PVA crosslinked with boric acid.The beads have well mechanical intensity and diffusion characteristics.At the same time the NH+4-N removal efficiency is very high with these beads which are made under the conditions of 10% PVA,2% active carbon,32?h crosslinked time and 1 vol.nitrifying bacteria in 2 vol.gelatin.The NH+4-N removal efficiency could reach 80% or more in 42?h.The effect is remarkable.

Key words: immobilized microorganism； entrapment； nitrifying bacteria； NH4+-N； polyvinyl alcohol(PVA)；

FENG Ben-xiu~(1),LAI Zi-ni~(2,3),CHEN Jun-bin~(4),ZHANG Kong-quan~(4),YU Yu-mian~(5). Study on Removing Ammonium Nitrogen from Wastewater by Immobilized Microorganism[J].Journal of Guangdong University of Technology, 2006, 23(2): 29-33.