Utilization of Vinasse Effluents from an Anaerobic Reactor

1986 ◽  
Vol 18 (12) ◽  
pp. 135-141 ◽  
Author(s):  
F J. C. B. Costa ◽  
B B. M. Rocha ◽  
C. E. Viana ◽  
A. C. Toledo
Keyword(s):  
Post Treatment ◽  
Organic Load ◽  
Secondary Treatment ◽  
Fish Food ◽  
Anaerobic Reactor ◽  
Streams And Rivers ◽  
Alcohol Industry ◽  
Treated Effluent ◽  
Very High

An anaerobic reactor was developed to biodigest alcohol distillery wastes. A further post-treatment of the effluent reduced the level of pollution to the point of eventually discharging into streams and rivers. The present work also analyses the use of biodigested vinasse as a source of food for fish. Very high efficiencies were obtained during primary and secondary treatment of vinasse effluent, as demonstrated by the greatly reduced organic load. The utilization of the treated effluent as a source of fish food presents an excellent alternative for the Brazilian alcohol industry.

Influence of Codisposal of Municipal Solid Waste and Olive Vegetation Water on the Anaerobic Digestion of a Sanitary Landfill

1993 ◽  
Vol 27 (2) ◽  
pp. 261-271 ◽  
Author(s):  
R. Cossu ◽  
N. Blakey ◽  
P. Cannas
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Research Study ◽  
Inhibitory Effect ◽  
Organic Load ◽  
Sanitary Landfill ◽  
Inhibitory Influence ◽  
Vegetation Water ◽  
Waste Degradation ◽  
Very High

A research study was carried out aiming to investigate the possibility of treatment of vegetation water in a anaerobic digester like a sanitary landfill. This vegetation water originates from olive oil production. The results, obtained from lysimeters filled with Municipal Solid Waste, show very high gasification and reduction of the organic load of vegetation water, with no inhibitory effect on waste degradation processes providing the vegetation water is added to an active methanogenic system or buffering the landfill system during the acid phase. The inhibitory influence of compounds, like polyphenols, which can be present in vegetation water in large amounts, has been studied.

scholarly journals Microwave Radiation Influence on Dairy Waste Anaerobic Digestion in a Multi-Section Hybrid Anaerobic Reactor (M-SHAR)

Processes ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 1772
Author(s):  
Marcin Zieliński ◽  
Marcin Dębowski ◽  
Joanna Kazimierowicz
Keyword(s):  
Microwave Radiation ◽  
Food Industry ◽  
Biogas Production ◽  
Cod Removal ◽  
Organic Load ◽  
Radiation Heating ◽  
Methane Fermentation ◽  
Anaerobic Reactor ◽  
Dairy Waste ◽  
Acid Whey

Whey is a primary by-product of dairy plants, and one that is often difficult to manage. As whey processing units are costly and complicated, only 15–20% of whey is recycled for use in the food industry. The difficulties in managing waste whey are particularly pronounced for small, local dairy plants. One possible solution to this problem is to use advanced and efficient digesters. The aim of this study was to present an innovative multi-section hybrid anaerobic bioreactor (M-SHAR) design and to identify how microwave radiation heating (MRH) affects methane fermentation of liquid dairy waste (LDW) primarily composed of acid whey. The MRH reactor was found to perform better in terms of COD removal and biogas production compared with the convection-heated reactor. The heating method had a significant differentiating effect at higher organic load rates (OLRs). With OLRs ranging from 15 to 25 kgCOD∙m−3∙d−1, the M-SHAR with MRH ensured a 5% higher COD removal efficiency and 12–20% higher biogas yields.

scholarly journals Technological Effectiveness of Sugar-Industry Effluent Methane Fermentation in a Fluidized Active Filling Reactor (FAF-R)

Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6626 ◽  
Author(s):  
Marcin Dębowski ◽  
Marcin Zieliński
Keyword(s):  
Production Efficiency ◽  
Sugar Industry ◽  
Removal Rate ◽  
Effluent Treatment ◽  
Organic Load ◽  
Methane Fermentation ◽  
Treated Effluent ◽  
Load Rate ◽  
Industry Effluent ◽  
The Impact

Technological solutions allowing the increase of the technological efficiency of anaerobic methods of wastewater treatment are still under investigation. The weaknesses of these solutions can be limited by the use of active fillings. The aim of the present study was to determine the impact of fluidized active filling on the effectiveness of anaerobic treatment of sugar-industry effluent, the production efficiency and the qualitative composition of the biogas produced. High, comparable (p = 0.05) effluent treatment results were observed at tested organic load rates between 4.0 and 6.0 kg COD (Chemical Oxygen Demand)/m3·d. The COD removal rate reached over 74%, biogas yields ranged from 356 ± 25 to 427 ± 14 dm3/kg CODremoved and the average methane contents were approximately 70%. A significant decrease in effluent treatment efficiency and methane fermentation was observed after increasing the organic load rate to 8.0 kg COD/m3·d, which correlated with decreased pH and FOS/TAC (volatile organic acid and buffer capacity ratio) increased to 0.44 ± 0.2. The use of fluidized active filling led to phosphorus removal with an efficiency ranged from 64.4 ± 2.4 to 81.2 ± 8.2% depending on the stage. Low concentration of total suspended solids in the treated effluent was also observed.

Effects of different filtration techniques on quality and toxicology of post treatment effluent from an anaerobic reactor

2020 ◽  
Vol 723 ◽  
pp. 138030
Author(s):  
Cleber Pinto da Silva ◽  
Daniele Cristina Hass Seremeta ◽  
Carlos Raphael Pedroso ◽  
Nilce Mary Turcatti Folle ◽  
Angie Thaisa Da Costa Souza ◽  
...  
Keyword(s):  
Post Treatment ◽  
Anaerobic Reactor

Post-treatment of Anaerobic Reactor Effluent by Double Filtration with Gravel and Clinoptilolite and Ozone Disinfection

2021 ◽  
Vol 13 (4) ◽  
Author(s):  
Ângela De Góes Lara Cardozo Costa ◽  
Cleber Pinto Da Silva ◽  
Danilo Gabriel dos Santos Matos ◽  
Carlos Raphael Pedroso ◽  
Carlos Magno Sousa Vidal ◽  
...  
Keyword(s):  
Post Treatment ◽  
Anaerobic Reactor ◽  
Double Filtration ◽  
Ozone Disinfection

Recirculation of treated effluent in the bleaching of kraft pulp

BioResources ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. 8944-8964
Author(s):  
Erika Nascimben Santos ◽  
Claudia Mudadu Silva ◽  
Jorge Luiz Colodette ◽  
Samilly B. Zanith de Almeida ◽  
Antonio José Vinha Zanuncio ◽  
...  
Keyword(s):  
Kraft Pulp ◽  
Treatment Plant ◽  
Pulp Mill ◽  
Effluent Treatment ◽  
Organic Load ◽  
Kraft Pulp Mill ◽  
Treated Effluent ◽  
Effluent Treatment Plant ◽  
Attractive Option ◽  
Washing Water

The bleaching plant of a kraft pulp mill is the sector that consumes water and generates effluent with the highest volume. Water recycling is an attractive option to reduce water consumption and effluent generation. This study evaluated the technical feasibility of using treated effluent as washing water in the bleaching stages. The bleaching sequence was simulated in the laboratory using four types of washing water: deionized water, whitewater, low organic load effluent, and high organic load effluent. To achieve 90% ISO pulp brightness, the ClO2 consumption increased from 8.1 kg ClO2 odt-1 when using water to 13.8 and 16.3 kgClO2 odt-1 for the low and high organic effluents. Physical and optical tests of the hand-sheet papers did not show any statistical difference between various washing waters. The filtrates showed values that did not burden the efficiency of the effluent treatment plant. It was possible to use effluent in the bleaching stages, considering that the filtrates and the produced paper complied with the quality standards.

Treatment of packaging board whitewater in anaerobic/aerobic biokidney

2005 ◽  
Vol 52 (10-11) ◽  
pp. 289-298 ◽  
Author(s):  
T. Alexandersson ◽  
Å. Malmqvist
Keyword(s):  
Removal Efficiency ◽  
Pilot Plant ◽  
Combined Treatment ◽  
Organic Load ◽  
Anaerobic Reactor ◽  
Loading Level ◽  
Total Process ◽  
Thermophilic Conditions ◽  
Aerobic Reactor ◽  
Plant Trial

Whitewater from production of packaging board was treated in a combined anaerobic/aerobic biokidney, both in laboratory scale and pilot plant experiments. Both the laboratory experiments and the pilot plant trial demonstrate that a combined anaerobic/aerobic process is suitable for treating whitewater from a packaging mill. It is also possible to operate the process at the prevailing whitewater temperature. In the laboratory under mesophilic conditions the maximal organic load was 12kg COD/m3*d on the anaerobic reactor and 6.7kg COD/m3*d on the aerobic reactor. This gave a hydraulic retention time, HRT, in the anaerobic reactor of 10 hours and 2 hours in the aerobic reactor. The reduction of COD was between 85 and 90% after the first stage and the total reduction was between 88 to 93%. Under thermophilic conditions in the laboratory the organic load was slightly lower than 9.6COD/m3*d and between 10 and 16COD/m3*d, respectively. The HRT was 16.5 and 3.4 hours and the removal was around 75% after the anaerobic reactor and 87% after the total process. For the pilot plant experiment at a mill the HRT in the anaerobic step varied between 3 and 17 hours and the corresponding organic load between 4 and 44kgCOD/m3*d. The HRT in the aerobic step varied between 1 and 6 hours and the organic load between 1.5 and 26kgCOD/m3*d. The removal of soluble organic matter was 78% in the anaerobic step and 86% after the combined treatment at the lowest loading level. The removal efficiency at the highest loading level was about 65% in the anaerobic step and 77% after the aerobic step. In the pilot plant trial the removal efficiency was not markedly affected by the variations in whitewater composition that were caused by change of production. The variations, however, made the manual control of the nutrient dosage inadequate and resulted in large variations in effluent nutrient concentration. This demonstrates the need for an automatic nutrient dosage system. The first step towards such a system was to evaluate two different on-line instruments. Both had severe stability problems, which made them unsuitable as parts in a system for control of the nutrient dosage.

Post-treatment of anaerobic reactor effluent for reuse using a triple filtration system

2019 ◽  
Vol 233 ◽  
pp. 76-82 ◽  
Author(s):  
Cleber Pinto da Silva ◽  
Carlos Raphael Pedroso ◽  
Diogo Ingles Zarpellon ◽  
José Geraldo Machado Filho ◽  
Carlos Magno Sousa Vidal ◽  
...  
Keyword(s):  
Post Treatment ◽  
Anaerobic Reactor ◽  
Filtration System

Use of ozone and hydrogen peroxide in the post-treatment of UASB treated alkaline fruit cannery effluent

2001 ◽  
Vol 44 (5) ◽  
pp. 69-74 ◽  
Author(s):  
G.O. Sigge ◽  
T.J. Britz ◽  
P.C. Fourie ◽  
C.A. Barnardt ◽  
R. Strydom
Keyword(s):  
Hydrogen Peroxide ◽  
Activated Carbon ◽  
Treatment Options ◽  
Water System ◽  
Granular Activated Carbon ◽  
Post Treatment ◽  
Legal Limit ◽  
Treated Effluent ◽  
Direct Discharge

UASB treatment of cannery effluents was shown to be feasible. However, the treated effluent still does not allow direct discharge to a water system and a further form of post-treatment is necessary to reduce the COD to lower than the legal limit of 75 mg/l. The use of ozone, hydrogen peroxide and granular activated carbon were used singly or in combination to assess the effectiveness as post-treatment options for the UASB treated alkaline fruit cannery effluent. Colour reduction in the effluent ranged from 15% to 92% and COD reductions of 26-91% were achieved. Combinations of ozone and hydrogen peroxide gave better results than either oxidant singly. The best results were achieved by combining ozone, hydrogen peroxide and granular activated carbon, and COD levels were reduced to levels sufficiently below the 75 mg/l limit.

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