کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
582113 | 1453165 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of alkalinity on the stabilization of municipal solid waste in anaerobic simulated bioreactor
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Four simulated landfill anaerobic bioreactors were performed to investigate the influence of alkalinity on the anaerobic treatment of municipal solid waste (MSW). Leachate was recirculated in all the four reactors. One reactor was operated without alkalinization. The other three were operated under alkaline conditions. Na2CO3, NaHCO3 and NaOH were added to leachate in the second, third and fourth reactor, respectively. Experimental results showed that CO32â and HCO3â addition had a more pronounced effect on MSW stabilization while the effect of addition of OHâ was weak. The concentration of COD, BOD5, total nitrogen (TN), ammonium nitrogen (NH4+-N) and nitrate nitrogen (NO3â-N), etc. in leachate significantly reduced in four reactors. The removal efficiencies were 90.56%, 92.21%, 92.74% and 90.29% for COD, 66.45%, 72.38%, 68.62% and 68.44% for NO3â-N, and 96.5%, 98.75%, 97.75% and 98% for NO2â-N in the control, Na2CO3, NaHCO3 and OHâ added reactors, respectively. The final BOD5/COD was 0.262, 0.104, 0.124, and 0.143, and pH was 7.13, 7.28, 7.42, and 7.24 for control, Na2CO3 added, NaHCO3 added, and OHâ added reactor, respectively. Therefore, alkalinity addition had positive effect on the stabilization of MSW.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 163, Issues 2â3, 30 April 2009, Pages 717-722
Journal: Journal of Hazardous Materials - Volume 163, Issues 2â3, 30 April 2009, Pages 717-722
نویسندگان
Dong Jun, Zhao Yong-sheng, Hong Mei, Zhang Wei-hong,