Effect of aeration rate on composting of penicillin mycelial dreg

作     者：Zhiqiang Chen Shihua Zhang Qinxue Wen Jun Zheng 

作者机构：State Key Laboratory of Urban Water Resource and Environment School of Municipal and Environmental Engineering Harbin Institute of Technology School of Civil Engineering and Architecture Anhui University of Technology 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2015年第27卷第11期

页      面：172-178页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 09[农学] 090101[农学-作物栽培学与耕作学] 0901[农学-作物学] 

基　　金：supported by the Public Projects of the Ministry of Environment Protection (No. 201209024) the State Key Laboratory of Urban Water Resource and Environment at Harbin Institute of Technology (No. 2015DX10) the Program for New Century Excellent Talents in University (No. NCET-12-0156) 

主　　题：Aeration rate Composting Penicillin mycelial dreg Sewage sludge 

摘      要：Pilot scale experiments with forced aeration were conducted to estimate effects of aeration rates on the performance of composting penicillin mycelial dreg using sewage sludge as inoculation. Three aeration rates of 0.15, 0.50 and 0.90 L/（min·kg） organic matter（OM） were examined. The principal physicochemical parameters were monitored during the 32 day composting period. Results showed that the higher aeration rate of 0.90 L/（min·kg） did not corresponded to a longer thermophilic duration and higher rates of OM degradation;but the lower aeration rate of 0.15 L/（min·kg） did induce an accumulation of NH＋4-N contents due to the inhibition of nitrification. On the other hand, aeration rate has little effect on degradation of penicillin. The results show that the longest phase of thermophilic temperatures ≥ 55°C, the maximum NO-3-N content and seed germination, and the minimum C/N ratio were obtained with 0.50 L/（min·kg） OM. Therefore, aeration rates of0.50 L/（min·kg） OM can be recommended for composting penicillin mycelial dreg.