Enhancing color and chemical oxygen demand degradation in distillery spent wash by electrocoagulation and ozone assisted electrocoagulation

2020 ◽  
Vol 197 ◽  
pp. 213-223
Author(s):  
Manoj Pandurang Wagh ◽  
Pravin Dinkar Nemade ◽  
Uday Naik ◽  
Ayan Sengupta
Keyword(s):  
Chemical Oxygen Demand ◽  
Oxygen Demand ◽  
Spent Wash ◽  
Distillery Spent Wash

scholarly journals PENGARUH PENAMBAHAN ZEOLIT ALAM TERMODIFIKASI SEBAGAI MEDIA IMOBILISASI BAKTERI TERHADAP DEKOMPOSISI MATERIAL ORGANIK SECARA ANAEROB

2017 ◽  
Vol 11 (1) ◽  
pp. 36
Author(s):  
Melly Mellyanawaty ◽  
Chandra Wahyu Purnomo ◽  
Wiratni Budhijanto
Keyword(s):  
Anaerobic Digestion ◽  
Chemical Oxygen Demand ◽  
Oxygen Demand ◽  
Total Solid ◽  
Volatile Solid ◽  
Spent Wash ◽  
Distillery Spent Wash ◽  
Soluble Chemical Oxygen Demand

Penelitian ini bertujuan untuk mengetahui pengaruh penambahan zeolit alam termodifikasi sebagai media imobilisasi terhadap dekomposisi material organik pada proses anaerobic digestion. Modifikasi yang dilakukan adalah dengan cara mengimpregnasi ion besi(Fe2+)ke dalam zeolit yang telah dibentuk menjadi cincin Raschig. Impregnasi yang dilakukan adalah impregnasi basah. Dalam penelitian ini digunakan 3 variasi konsentrasi larutan Fe2+ yaitu 10 mg/L; 100 mg/L dan 2000 mg/L. Dari hasil impregnasi zeolit menggunakan ketiga konsentrasi tersebut diperoleh kadar Fe2+ yang terdeposit ke dalam zeolit berturut-turut: 0,0016 mgFe2+/gZeo; 0,0156 mgFe2+/gZeo; 0,3125 mgFe2+/gZeo dan 0 mgFe2+/gZeo digunakan sebagai kontrol. Zeolit termodifikasi Fe2+ kemudian ditambahkan ke dalam reaktor anaerobik yang dijalankan secara batch. Perbandingan volume media zeolit dan cairan adalah 1:1. Substrat yang digunakan berupa campuran limbah distillery spent wash dengan konsentrasi soluble Chemical Oxygen Demand (sCOD) 10.000 mg/L dan keluaran dari digester aktif kotoran sapi sebagai inokulum. Perbandingan volume distillery spent wash terhadap inokulum sebesar 2:1. Proses anaerobik dijalankan selama 28 hari.Jika dibandingkan dengan data Total Solid (TS) dan Volatile Solid (VS), hasil percobaan menunjukkan bahwa data analisis sCOD memberikan data yang lebih akurat dan konklusif untuk mengukur perubahan material organik dalam proses peruraian anaerobik menggunakan media imobilisasi. Dari keempat variasi kadar Fe2+ yang digunakan dalam penelitian ini, Fe2+ dengan kadar 0,0156 mgFe/gZeo memberikan efisiensi penurunan material organik (sCOD) tertinggi yaitu 66,73%. Sedangkan Fe2+ dengan kadar 0,3125 mgFe/gZeo mampu meningkatkan produksi biogas sebesar 43%. Namun secara keseluruhan proses peruraian anaerobik yang menggunakan zeolit termodifikasi Fe2+ menghasilkan biogas lebih banyak daripada kontrol (zeolit tanpa Fe2+).

scholarly journals Degradation of distillery spent wash using monopolar parallel and monopolar series electrocoagulation process

2021 ◽  
Vol 2 (1) ◽  
pp. 8-17
Author(s):  
Sukanya Pujari ◽  
Manoj Wagh ◽  
Shila Dare
Keyword(s):  
Chemical Oxygen Demand ◽  
Waste Treatment ◽  
Removal Rate ◽  
Oxygen Demand ◽  
Cost Effective ◽  
Electrochemical Treatment ◽  
Cod Removal ◽  
Spent Wash ◽  
Distillery Spent Wash ◽  
The Impact

In waste treatment and water management issues, electrocoagulation (EC) is the most cost-effective and environmentally friendly option. In the study, EC treatment of distillery spent wash was carried out using new electrodes packed with aluminium foil scraps. These metal scraps were packed in a mesh to function as anode and cathode electrodes. Electrochemical treatment was carried out for 150 minutes, and samples were analysed regularly to determine the colour and chemical oxygen demand (COD). The impact of operating parameters such as pH, applied current, electrolysis time, agitation speed, and electrode distance on colour and COD removal was investigated. The EC processes were carried out in monopolar parallel (MP-P) and monopolar series (MP-S). The MP-S connection measured the potential difference between the amplified pair of electrodes, whereas the output signals in the MP-P connection were formed by several input electrodes, resulting in a high removal rate. The results indicated that the MP-P relationships enhance the COD removal rate by 4.16 to 8.06 %. An optimum chemical oxygen demand degradation is 77.29 % at pH 3, and decolourisation is 76.55 % at pH 8.3. TDS is reduced to a maximum of 58.32 %, while sulfate and chloride are reduced to 64.72 and 20.44 %, respectively.

scholarly journals Treatment of distillery spent wash by combined UF and RO processes

2013 ◽  
Vol 11 (2) ◽  
pp. 235-240
Keyword(s):  
Pollution Control ◽  
Applied Pressure ◽  
Oxygen Demand ◽  
Pilot Scale ◽  
World Health ◽  
Spent Wash ◽  
Distillery Spent Wash ◽  
Pollutant Level ◽  
Central Pollution Control Board ◽  
Health Organization

The present study deals with the treatment of distillery spent wash by an ultrafiltration (UF) membrane followed by reverse osmosis (RO) membrane on a pilot scale membrane setup. The performance of the system was evaluated by varying applied pressure on the thin-film composite polyamide (TFC-PA) UF and RO membranes. In the first stage, UF experiments are carried out for concentration of effluents by removing the suspended solids (SS). RO has effectively separated the total dissolved solids (TDS), chemical oxygen demand (COD), biochemical oxygen demand (BOD), sulphate and potassium with the rejection efficiency of 97.9%, 96.8%, 97.9%, 99.7% and 94.65%, respectively. UF was effective for the separation of SS with the rejection efficiency of 95.5%. The pollutant level in permeate are below the maximum contaminant level as per the guidelines of the World Health Organization and the Central Pollution Control Board (CPCB) of India specifications for effluent discharge (less than 1000 ppm of TDS and 500 ppm of COD).

Potential of Recalcitrant Effluent to Generate Biogas by Up-flow Anaerobic Sludge Blanket and Mechanical Vapour Recompression (MVR) -A Case Study

2021 ◽  
Author(s):  
Manoj Wagh ◽  
Pravin Nemade ◽  
Ashok Biradar
Keyword(s):  
Oxygen Demand ◽  
Anaerobic Treatment ◽  
Primary Treatment ◽  
Organic Content ◽  
Cod Removal ◽  
Anaerobic Sludge ◽  
Spent Wash ◽  
Distillery Spent Wash ◽  
Anaerobic Sludge Blanket

Abstract The spent wash generated in the distillation process has very high organic content like biochemical oxygen demand (BOD) and chemical oxygen demand (COD), which are treated to curtail the levels of COD and BOD. Day by day the rules and legislation are stringent and mandatory for disposal of distillery spent wash. Anaerobic treatment is the primary treatment widely adopted to generate biogas. To find out the potential of recalcitrant effluent a case study of the full-scale operating biomethanation plants at Sanjivani, SSK Ltd, Kopargaon, (M.S), India and Spectrum Renewable Energy Pvt. Ltd. (SREL) Warnanagar (M. S.), India was incorporated. Up-flow Anaerobic Sludge Blanket treatment was implemented to generate the biogas. Sanjivani distillery industry, Kopargaon has a COD removal efficiency of 70–72% with specific biogas generation of 0.5 m3/ kg COD removal, and total biogas generated is 38000 Nm3/d. Mechanical Vapour Recompression (MVR) is the cutting-edge technology executed to convert distillery spent wash into useful by-products such as biogas, clean water, and organic manure.

BIOGAS PRODUCTION IN THE CONCENTRATED DISTILLERY WASTEWATER TREATMENT

2018 ◽  
pp. 51-59 ◽  
Author(s):  
N. Golub ◽  
M. Potapova ◽  
M. Shinkarchuk ◽  
O. Kozlovets
Keyword(s):  
Wastewater Treatment ◽  
Dry Matter ◽  
Ph Value ◽  
Biogas Production ◽  
Anaerobic Sludge ◽  
Methane Formation ◽  
Maximum Output ◽  
Processing Technologies ◽  
Spent Wash ◽  
Distillery Spent Wash

The paper deals with the waste disposal problem of the alcohol industry caused by the widespread use of alcohol as biofuels. In the technology for the production of alcohol from cereal crops, a distillery spent wash (DSW) is formed (per 1 dm3 of alcohol – 10–20 dm3 DSW), which refers to highly concentrated wastewater, the COD value reaches 40 g O2/dm3. Since the existing physical and chemical methods of its processing are not cost-effective, the researchers develop the processing technologies for its utilization, for example, an anaerobic digestion. Apart from the purification of highly concentrated wastewater, the advantage of this method is the production of biogas and highquality fertilizer. The problems of biotechnology for biogas production from the distillery spent wash are its high acidity–pH 3.7–5.0 (the optimum pH value for the methanogenesis process is 6.8–7.4) and low nitrogen content, the lack of which inhibits the development of the association of microorganisms. In order to solve these problems, additional raw materials of various origins (chemical compounds, spent anaerobic sludge, waste from livestock farms, etc.) are used. The purpose of this work is to determine the appropriate ratio of the fermentable mixture components: cosubstrate, distillery spent wash and wastewater of the plant for co-fermentation to produce an energy carrier (biogas) and effective wastewater treatment of the distillery. In order to ensure the optimal pH for methanogenesis, poultry manure has been used as a co-substrate. The co-fermentation process of DSW with manure has been carried out at dry matter ratios of 1:1, 1:3, 1:5, 1:7 respectively. It is found that when the concentration of manure in the mixture is insufficient (DSW/manure – 1:1, 1:3), the pH value decreases during fermentation which negatively affects methane formation; when the concentration of manure in the mixture is increased (DSW/manure – 1:5, 1:7), the process is characterized by a high yield of biogas and methane content. The maximum output of biogas with a methane concentration of 70 ± 2% is observed at the ratio of components on a dry matter “wastewater: DSW: manure” – 0,2:1:7 respectively. The COD reduction reaches a 70% when using co-fermentation with the combination of components “wastewater: DSW: manure” (0,3:1:5) respectively.

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