PENG Zhi-ying,LI Bing-bing,WANG Yan,et al.Biological Nitrogen and Phosphorus Removal Using Biofuel By-product as Carbon Source[J].China Water & Wastewater,2021,37(19 19):7-13.
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Biological Nitrogen and Phosphorus Removal Using Biofuel By-product as Carbon Source

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第37卷 Number: 19 19 Page: 7-13 Column: Date of publication: 2021-10-01
Author(s):
PENG Zhi-ying1; LI Bing-bing1; 2; WANG Yan1; 3; SHAN Wei1; ZHENG Kai-kai1; 3; GAO Zhi-yang4; TANG Xiao-bo4; LI Ji1; 5; 6; 7
(1. School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; 2. School of Life Sciences, Anhui Agricultural University, Hefei 230036, China; 3. Wuxi Puhui Environmental Protection Technology Co. Ltd., Wuxi 214028, China; 4. Wuxi Gaoxin Water Co. Ltd., Wuxi 214028, China; 5. Collaborative Innovation Center of Water Treatment Technology and Material in Universities of Jiangsu Province, Suzhou 215009, China; 6. Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi 214122, China; 7. Jiangsu Engineering Laboratory of Biomass Energy and Carbon Reduction Technology, Wuxi 214122, China)
Keywords:
carbon source; nitrogen and phosphorus removal; biofuel by-product; denitrification potential
Abstract:
In order to provide a new choice of carbon source for wastewater treatment plant and realize the utilization of waste resources, using industrial sodium acetate as a control, the biological nitrogen and phosphorus removal of the by-product (BBP) from the biofuels production process was studied. After 19 days of operation in the BBP reactor, the effluent TN and TP concentrations were close to those in the sodium acetate reactor. The removal rate of TN and TP in BBP reactor could reach 61.7% and 80% respectively, the effluent COD concentration was maintained below 50 mg/L, and the effluent quality could meet the first level A discharge standard of GB 18918-2002. In BBP, the proportion of organic matter which was not easy to be directly used by microorganisms was 42%, and that in sodium acetate was 15%. After the domestication of activated sludge using BBP as the carbon source, the denitrification potential increased from 0 to 10.63 mgNO3--N/(gVSS·h), which was close to initial denitrification potential of sodium acetate of 11.09 mgNO3--N/(gVSS·h).
Last Update: 2021-10-01