文档介绍：Control of Carbon and Nitrogen Ratio for Nitrogen
Removal of Aerobic Denitrifier in a Batch Reactor
WANG Hongyu, YANG Kai LV Bin, YANG Xiaojun
Department of Municipal Engineering School of Environmental and Civil Engineering
Wuhan University Wuhan Institute of Science and Technology
Wuhan,China Wuhan,China
Email: whydream2000@
Abstract: An aerobic denitrifier (X31) derived from sewage
sludge has been used for the biological denitrification under II. MATERIALS AND METHODS
aerobic environment. 16S rDNA sequencing indicates X31 is a
stain of Pseudomonas sp. inate was used as the carbon A. Isolation
source for X31 aerobic denitrification. Results showed that over
97% denitrification rate was achieved when inate was The cultural medium for isolation posed of the
-1 [14]:
applied. When the initial COD/N ratio was adjusted to 6, almost following ingredients (g L ) Na2HPO4·7H2O, ;
95% nitrate removal was achieved. No sign of nitrite KH2PO4, ; NH4Cl, ; MgSO4·7H2O, and trace
accumulation was detected and the residue nitrite was below element solution, 2ml/L. The trace element solution was
mg/L and the residue nitrate was mg/L under a C/N of 6. composed of the following ingredients (g L-1): EDTA, ;
The nitrogen removal efficiency was little changed with
ZnSO4, ; CaCl2, ; MnCl2·4H2O, ; FeSO4·7H2O, ;