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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue Nov 2015, 36 (6)                                                                                                             Back

nstantaneous and historical temperature effects on a-pinene

Performance evaluation of upflow anaerobic sludge blanket reactor process for dairy wastewater treatment


C. Elangovan1* and A.S.S. Sekar2

1Civil Engineering Department, Anna University, Chennai-600 025, India

2Civil Engineeering Department, Alagappa Chettiar College of Engineering and Technology, Karaikudi-630 004, India

*Corresponding Author E-mail:




Publication Data

Paper received:

03 May 2014


Revised received:

30 September 2014


Re-revised received:

02 January 2015



20 March 2015



Investigation on dairy wastewater treatment was undertaken at ambient temperature in 11 l effective volume of laboratory scale upflow anaerobic sludge blanket reactor receiving an average influent chemical oxygen demand of 2100 mg l-1 for 3 months of 24 hours, hydraulic retention time. The feeds of the synthetic dairy wastewater operated with HRT of 12 hrs, 16 hrs, 20 hrs and 24 hrs was equivalent to organic loading rates of 1.20 kg COD m-3 d - 7.20 kg COD m-3 d, 0.9 kg COD m-3 d - 5.40 kg COD m-3 d, 0.72 kg COD m-3 d - 4.32 kg COD m-3 d and 0.60 kg COD m-3 d - 3.60 kg COD m-3 d respectively. After steady state condition was reached, which took about 2 months, the effluent quality parameter were sampled and analysed to quantify treatment efficiencies. The following removal efficiency observed were 73 - 94.33% COD; 50.04 - 56.66% total solids; 45.55 - 70.63% total dissolved solids; 66 - 86.67% total nitrogen and 72 - 94% total phosphorous. Maximum biogas production rate was 383 l kg-1 COD removed with 260 l of methane gas. Estimation of biogas production was analysed using artificial neural network software model, and the results predicted coincided well with the experimental results.   



 Key words

Biogas, Chemical oxygen demand, Dairy wastewater, Hydraulic retention time, Organic loading rate 



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