In: Advances in Environmental Pollution Management: Wastewater Impacts and Treatment Technologies DOI: 10.26832/aesa-2020-aepm-014 Chapter [14] Distillery spent wash treatment technologies: A case study of the comparative efciency of aerobic and anaerobic treatment processes Mukesh Ruhela 1 , Manas Kumar Sahu 1 , Sweta Bhardwaj 1 and Faheem Ahamad 2,* 1 Department of Environmental Engineering, Subharti Institute of Technology and Engineering (SITE), Swami Vivekanand Subharti University, Meerut 250005, Utar Pradesh, India 2 Department of Environmental Science, Keral Verma Subharti College of Sciences (KVSCOS), Swami Vivekanand Subharti University, Meerut 250005, Utar Pradesh, India Abstract Efuent generated from distilleries is known as slop/spent or wash/vinasse/ stillage. The present study is carried out with the objective of characterization and treatment of distillery spent wash using aerobic and anaerobic treatment processes on the treatment plant of UP Co-operative distillery Jahangirabad, Anoopsahar (UP) form October 2019 to February 2020. Efuent of the distillery (RAW-DSW) was found highly polluted during all the samplings. Infuent was observed highly acidic in nature (pH= 4.1-4.5). After the treatment, efuent becomes near neutral in case aerobic treatment and slightly alkaline in case of anaerobic treatment. For TSS aerobic treatment efciency is 87.6% while in anaerobic treatment efciency is 90.4%. In case of BOD, efciency of aerobic treatment is 36.6% while in anaerobic treatment it is 71.7%. The parameters of outlet from both the treatment processes were found above the standards limits of discharge. Although anaerobic treatment processes improve the quality of outlet, yet the performance is not satisfactory and it requires further atention to improve the quality of efuent to meet the discharge limits. Keywords Biogas, Ethanol, Distillery spent wash, Molasses, Sugar industry Faheem Ahamad, Email: faheem.ahamad170390@gmail.com (*Corresponding author) © 2020 | Agro Environ Media | Agriculture and Environmental Science Academy, Haridwar, India