Old landfill leachate treatment through multistage process: membrane adsorption bioreactor and nanofitration

被引：0
作者：
Majid Peyravi
Mohsen Jahanshahi
Mahsa Alimoradi
Etesam Ganjian
机构：
[1] Babol University of Technology,Nanotechnology Research Institute, School of Chemical Engineering
来源：
Bioprocess and Biosystems Engineering | 2016年 / 39卷
关键词：
Activated sludge; Membrane bioreactor; Adsorption isotherms; Specific oxygen uptake rate; Landfill leachate treatment;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A bench-scale integrated process based on submerged aerobic powdered activated carbon-membrane bioreactor (PAC-MBR) has been utilized and established for the treatment of landfill leachate. The results showed that the submerged PAC-MBR system effectively removed biodegradable trace organic compounds by the average removal rate about 71 % at optimum food to microorganism (F/M) ratio of 0.4 gCOD/g day under a HRT of 24 h. Adding nanofiltration (NF) process increased the treatment efficiency up to 99 %. Further, adding powdered activated carbon to activated sludge (AS) resulted in a higher adsorption capacity in comparison with AS. Adsorption isotherms were investigated and fitted by the Langmuir and Freundlich isotherm models in which the Langmuir model performed better. The specific oxygen uptake rate (SOUR) showed that adding PAC reduces the effects of COD on microorganism activities. NH3–N, TKN and Heavy metals removal efficiency amounted to 97 ± 2, 96 ± 2, and 99 ± 2 %, respectively.
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页码：1803 / 1816
页数：13
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