YUJian-bo,ZHOUJiong,HUANGYang-yang,et al.Combined Treatment Technology for High Temperature and High Ammonia Nitrogen Fermentation Wastewater from Food Waste[J].China Water & Wastewater,2024,40(19):109-114.
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Combined Treatment Technology for High Temperature and High Ammonia Nitrogen Fermentation Wastewater from Food Waste

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第40卷 Number: 第19期 Page: 109-114 Column: Date of publication: 2024-10-01
Author(s):
YU　Jian-bo1; 2;  ZHOU　Jiong1;  HUANG　Yang-yang3;  LIN　Cheng-bao3;  ZHOU　Ying1;  ZHOU　Jian1
（1. Key Laboratory of Three Gorges Reservoir Region’s Eco-Environment ， Chongqing University， Chongqing 400045， China； 2. Central & Southern China Municipal Engineering Design and Research Institute Co. Ltd.， Wuhan 430000， China； 3. CREEC Survey， Design and Research Co. Ltd.， Chongqing 400023， China）
Keywords:
fermentation wastewater from food waste;  anaerobic process;  aerobic process;  coagulation;  microbial community
Abstract:
A biological anaerobic-aerobic treatment system with high ammonia nitrogen resistance was constructed for treating fermentation wastewater from food waste, and the treatment performance of the anaerobic (ASBR)-aerobic (SBBR)-coagulation process was investigated. By inoculating dewatered sludge from an urban sewage treatment plant, the anaerobic treatment system with high ammonia nitrogen and high temperature resistance was successfully established under the conditions of temperature of (50±1) ℃ and influent ammonia nitrogen of 3 600 mg/L. The average COD removal efficiency could reach 69.5%. The dominant hydrolytic and acidifying bacteria in the system were Lysinibacillus, Coprothermobacter, Sporosarcina etc., and the dominant methanogenic archaea was Methanothermobacter. Under the circumstances where the organic load (calculated as COD) of the ASBR amounted to 1.0 kg/(m3·d), the DO of the SBBR system was 6 mg/L, and the dosage of the coagulant FeCl3 in the coagulation unit stood at 200 mg/L, the overall COD removal efficiency of the combined process could attain 94.80%. The proportions of COD removal in the anaerobic, aerobic, and coagulation treatment units were 61.20%, 26.93%, and 6.67% respectively. The analysis results of three?dimensional fluorescence spectra indicated that the anaerobic and aerobic treatment system exerted a leading role in the removal of readily biodegradable organic matters, and the coagulation unit exhibited a remarkable removal efficiency for the refractory organic matters dominated by humic acid.
Last Update: 2024-10-01