Potato Processing Wastewater Treatment at Relatively High Loading Rates Using a Unified Anaerobic Fermenter-Filter

1982 ◽  
Vol 17 (1) ◽  
pp. 63-74 ◽  
Author(s):  
R.C. Landine ◽  
G.J. Brown ◽  
A.A. Cocci ◽  
T. Viraraghavan
Keyword(s):  
Wastewater Treatment ◽  
Room Temperature ◽  
Anaerobic Treatment ◽  
Basic Design ◽  
Potato Processing ◽  
Two Stage ◽  
Filter System ◽  
Loading Rates ◽  
Laboratory Bench ◽  
Scale Design

Abstract A laboratory bench-scale study using a unified anaerobic fermenter-filter system (referred to as a BVF-HAF system) was conducted at room temperature over an 8 month period on potato processing wastewater for the purpose of verifying a proposed full-scale design concept. In addition to two-stage anaerobic treatment, the first stage anaerobic effluent (BVF effluent) was subjected to aerobic polishing in a simulated facultative aerated lagoon with a retention of 4 days. The basic design conditions entailed treatment of a clarified potato wastewater with a COD of 7600 mg/L and a retention of 4 d in the BVF (loading 1.71 kg/m3.d). After over-coming an upset condition believed due to toxicity of the vacuum filtrate feed, the model performed well achieving 78.9% COD removal in the BVF plus 5 3.4% in the HAF for a combined total of 90.2%. When the BVF effluent was aerated the combined BVF - aerated lagoon removal reached 94.8%.

Anaerobic treatment of partly acidified wastewater in a two-stage expanded granular sludge bed (EGSB) system at 8°C

1997 ◽  
Vol 36 (6-7) ◽  
pp. 317-324 ◽  
Author(s):  
Jules B. van Lier ◽  
Salih Rebac ◽  
Piet Lens ◽  
Friso van Bijnen ◽  
Stefanie J. W. H. Oude Elferink ◽  
...  
Keyword(s):  
Specific Activity ◽  
Blot Hybridization ◽  
Effective Diffusion ◽  
Anaerobic Treatment ◽  
Anaerobic Sludge ◽  
Two Stage ◽  
Methanogenic Activity ◽  
Loading Rates ◽  
Second Stage ◽  
Sucrose Loading

Psychrophilic (8 °C) anaerobic treatment of partly acidified waste water was investigated using a two stage EGSB system with a total volume of 8.6 dm3. The reactor system was operated at an up-flow velocity of 10 m·h−1 and was fed with a sucrose-VFA mixture of 550–1100 mg COD dm−3. The average CODsol and VFA-COD removal efficiencies were 97 and 90 %, respectively, at total organic loading rates (OLR) ranging between 5.1–6.7 g COD dm−3·day−1, sucrose loading rates up to 1 g COD dm−3 day−1 and a hydraulic retention time (HRT) of 4 h. An increase in the sucrose loading rates resulted in a significant wash-out of biomass from the first stage. The second stage satisfactory served as a scavenger of non-degraded VFA from the first stage. Specific activity assays showed an increase of 15 % in the specific methanogenic activity of the sludge present in the second stage and a decrease of 9 % in the first stage. Apparently, an enrichment of methanogens and acetogens in the anaerobic sludge in the second stage took place at temperatures as low as 8°C. The acidogenic population became much more dominant in the first stage, resulting in a higher acidifying activity and a decreased methanogenic activity. 16S rRNA probe-techniques (dot blot hybridization) showed that the acetate consuming Methanosaeta (formerly Methanothrix) and the hydrogenotrophic Methanobrevibacter species (or relatives) were the most abundant methanogens present in the psychrophilic sludge. The ratio between bacterial and methanobacterial hybridization signal of the first stage was 3 times higher than that of the second stage. By using NMR techniques, a higher effective diffusion coefficient was found for the smaller sized granules in both reactors, which is in congruent with the higher maximum specific acetate degrading activity of the smaller granules.

scholarly journals Comparison of thermophilic and mesophilic anaerobic treatment for potato processing wastewater using a contact reactor

2017 ◽  
Vol 19 (2) ◽  
pp. 318-326 ◽  
Keyword(s):  
Oxygen Demand ◽  
Anaerobic Treatment ◽  
Gas Production ◽  
Organic Loading ◽  
Potato Processing ◽  
Loading Rates ◽  
Methane Gas ◽  
Acid Ratio ◽  
Mesophilic Conditions ◽  
Better Than

In this study, different organic loading rates (OLRs) ranging from 1.1 to 5.0 kg COD/m3·day were used to assess the performance of an anaerobic reactor at the optimum mesophilic (35°C) and thermophilic (55°C) temperatures. The methane gas production rate of the thermophilic treatment was higher than that of the mesophilic treatment. The efficiency of chemical oxygen demand (COD) removal was observed to range from 89.12 to 93.20% following the thermophilic anaerobic treatment and from 76.36 to 92.62% following the mesophilic treatment. The average VFA (volatile fatty acid)/alkalinity ratio of the effluent was 0.3 under both thermophilic and mesophilic conditions for all the OLR applications. The HPr/HAc (propionic acid/acetic acid) ratio was calculated as 0.16 and 1.3 for the mesophilic and thermophilic treatments, respectively. For the mesophilic treatment, the average methane gas production was found to be 0.394 m3 CH4/kg CODremoved while it was 0.42 m3 CH4/kg CODremoved for the thermophilic experiment. However, the sludge settleability of the mesophilic treatment was better than that of the thermophilic treatment.

Anaerobic Wastewater Treatment in Downflow Stationary Fixed Film Reactors

1991 ◽  
Vol 24 (8) ◽  
pp. 157-177 ◽  
Author(s):  
K. J. Kennedy ◽  
R. L. Droste
Keyword(s):  
Wastewater Treatment ◽  
Anaerobic Treatment ◽  
Retention Capacity ◽  
Efficient Treatment ◽  
Anaerobic Wastewater Treatment ◽  
Loading Rates ◽  
Anaerobic Reactors ◽  
Fixed Film ◽  
And Performance ◽  
Solids Content

Design features and performance of the downflow stationary fixed film reactor for anaerobic wastewater treatment are reviewed. Media characteristics, feed characteristics and loading rates found to provide rapid start-up and maximum treatment efficiency are discussed. It is concluded that the reactor is a useful research tool for studying anaerobic treatment. The reactor is not as sensitive to waste characteristics as other second generation anaerobic reactors. The reactor is able to handle wastes with high suspended solids content and provide efficient treatment with a minimum clogging potential. DSFF operation is simple and stable; however, loading rates attainable in this reactor are not as high as those attained with other processes due to lower biomass retention capacity.

Wastewater treatment and nitrogen removal using submerged filter systems

2001 ◽  
Vol 43 (1) ◽  
pp. 225-232 ◽  
Author(s):  
P. C. Chui ◽  
Y. Terashima ◽  
J. H. Tay ◽  
H. Ozaki
Keyword(s):  
Wastewater Treatment ◽  
Nitrogen Removal ◽  
Nitrogen Concentration ◽  
Series System ◽  
Filter System ◽  
Loading Rates ◽  
Nitrogen Concentrations ◽  
In Series ◽  
Effluent Recycling

The performance of two submerged filter systems: a two filters-in-series system and a single combined filter system, in treating a strong nitrogenous wastewater with nitrogen concentration of 480 mg/L was evaluated. Both systems were equally effective in removing up to 90% of nitrogen and 98% of COD from the wastewater for loading rates up to 5 kg COD/m3.d and 0.5 kg N/m3.d. The second system in which anaerobic, anoxic, and aerobic zones were incorporated in a single filter offers a greater flexibility in treatment in that by repositioning the locations of the aeration point and effluent recycling inlet, the zonal volumes can be altered easily to treat wastewaters with different COD and nitrogen concentrations.

Anaerobic Treatment of Wastewater from the Production of Chemi-Thermomechanical Pulp

1985 ◽  
Vol 17 (1) ◽  
pp. 103-111 ◽  
Author(s):  
T Welander ◽  
P.-E Andersson
Keyword(s):  
Waste Water ◽  
Hydrogen Peroxide ◽  
Control Parameter ◽  
Anaerobic Treatment ◽  
Thermomechanical Pulp ◽  
Two Stage ◽  
Loading Rates ◽  
Inhibitory Compounds ◽  
Acidogenic Reactor ◽  
Stage Process

The anaerobic treatment of waste water from the production of peroxide-bleached chemi-thermomechanical pulp was studied. Hydrogen peroxide had to be removed from the waste water before treatment in a methane producing reactor was possible. Peroxide in concentrations up to 200 mg/1 could be removed from the waste water by means of degradation in an acidogenic reactor, the first stage in an anaerobic two-stage process. A system consisting of a prestage and a subsequent acidogenic reactor could successfully remove peroxide in a concentration of 1200 mg/l from the waste water. The prestage was continuously fed with sludge from the acidogenic reactor. The redox potential in the acidogenic stage of a two-stage process proved to be a valuable control parameter when treating waste water containing peroxide. Adaptation of the methanogenic microflora to inhibitory compounds in the waste water was possible. Treatment of the waste water in a pilot plant at low loading rates gave a COD reduction of 50-60% and a methane yield of 0.3 Nm3/kg COD reduced.

Treatment of potato-processing waste water by an anaerobic lagoon–filter system

1980 ◽  
Vol 7 (2) ◽  
pp. 373-383 ◽  
Author(s):  
K. C. Lin ◽  
G. J. Brown
Keyword(s):  
Waste Water ◽  
Oxygen Demand ◽  
Processing Waste ◽  
Potato Processing ◽  
Effluent Quality ◽  
Filter System ◽  
Loading Rates ◽  
Anaerobic Lagoon ◽  
Filter Clogging ◽  
Bottom Portion

An anaerobic lagoon–filter system was operated in the laboratory to treat potato-processing waste water at 20 °C and pH 7 under three loading rates varying from 0.149 to 0.719 kg BOD∙m−3 ∙day−1. The overall removals of biochemical oxygen demand (BOD) and suspended solids (SS) were high, in the ranges of 97–98 and 89–97%, respectively. The system was consistently stable in effluent quality despite periods of shock loads and zero input.The optimum loading rates to the lagoon and the filter were 0.3 and 0.4 kg BOD∙m−3∙day−1, respectively. Most of the BOD and SS removals occurred in the bottom portion of the reactors. A base had to be added to the waste water to maintain the pH at 7 for good performance. No lagoon desludging is expected for full-scale operation. Filter clogging is also unlikely under the optimum loading rates.

Full scale experiences with anaerobic/aerobic treatment plants in the food and beverage industry

1999 ◽  
Vol 40 (1) ◽  
pp. 305-312 ◽  
Author(s):  
U. Austermann-Haun ◽  
H. Meyer ◽  
C. F. Seyfried ◽  
K.-H. Rosenwinkel
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Ammonium Phosphate ◽  
Anaerobic Treatment ◽  
Full Scale ◽  
Municipal Wastewater Treatment ◽  
Potato Processing ◽  
Magnesium Ammonium Phosphate

In Germany, there are currently 125 full-scale anaerobic treatment plants treating industrial wastewater. This paper describes the operational experiences of several industries (beet sugar, starch, pectin brewery, distillery, vegetable, potato processing) which undertake anaerobic wastewater treatment, with particular emphasis on specific wastewater problems and their solutions. Also presented are experiences with the handling of high nitrate concentrations, with the treatment of mixtures of industrial wastewater from different origins, with the chance to prevent the emergence of lime, magnesium ammonium phosphate (MAP) or aluminium precipitation. This paper deals as well with the first EGSB reactor (Expanded Granular Sludge Bed) at a German potato processing factory as well as the first municipal wastewater treatment plant combined with a separate anaerobic stage to treat a wastewater mixture from several small factories.

RESEARCH AND EVALUATE TREATMENT EFFICIENCY ON TAPIOCA PROCESSING INDUSTRIAL WASTEWATER BY AEROBIC BIOFILTER TECHNOLOGY WITH VARIOUS MATERIALS

2010 ◽  
Vol 13 (3) ◽  
pp. 54-66
Author(s):  
Phuong Thi Thanh Nguyen ◽  
Phuoc Van Nguyen ◽  
Anh Cam Thieu
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Utilization Rate ◽  
Organic Loading ◽  
Treatment Efficiency ◽  
Research Results ◽  
Loading Rates

This study was performed to evaluate the efficiency of tapioca processing wastewater treatment using aerobic biofilter with variety of biofilter media: coir, coal, PVC plastic and Bio - Ball BB15 plastic. Research results in the lab demonstrated all four aerobic biofilter models processed can treated completely N and COD which COD reached 90-98% and N reached 61-92%, respectively, at the organic loading rates in range of 0.5, 1, 1.5 and 2 kgCOD/m3.day. The results identified coir filter was the best in four researched materials with removal COD and specific substract utilization rate can reach 98%, and 0.6 kg COD/kgVSS.day. Research results open the new prospects for the application of the cheap materials, available for wastewater treatment.

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