Anaerobic treatment of potato-processing wastewater by a UASBR-UAF system at low organic loadings

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%.

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Anaerobic treatment of potato processing wastewater

Water Science & Technology ◽

10.1016/s0273-1223(99)00398-4 ◽

1999 ◽

Vol 40 (1) ◽

Cited By ~ 10

Keyword(s):

Anaerobic Treatment ◽

Potato Processing

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

Global NEST Journal ◽

10.30955/gnj.002118 ◽

2017 ◽

Vol 19 (2) ◽

pp. 318-326 ◽

Cited By ~ 4

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.

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Anaerobic treatment of potato processing wastewater

Water Science & Technology ◽

10.2166/wst.1999.0060 ◽

1999 ◽

Vol 40 (1) ◽

pp. 297-304 ◽

Cited By ~ 5

Author(s):

George R. Zoutberg ◽

Zerrin Eker

Keyword(s):

Anaerobic Treatment ◽

Potato Processing ◽

Processing Industry ◽

Uasb Reactors

This paper deals with the anaerobic treatment of wastewater from the potato processing industry. It is shown that treatment of this type of wastewater in UASB reactors has successfully been applied at many companies. Apart from the Biothane® UASB technology a new anaerobic technology is presented: the Biobed® EGSB technology. Presented is the first application of this technology in the potato processing industry and also a comparison is made between this technology and the Biothane® UASB technology.

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Effects of mixing on anaerobic treatment of potato-processing wastewater

Canadian Journal of Civil Engineering ◽

10.1139/l91-061 ◽

1991 ◽

Vol 18 (3) ◽

pp. 504-514 ◽

Cited By ~ 10

Author(s):

K. C. Lin ◽

M. E. J. Pearce

Keyword(s):

Steady State ◽

Methane Production ◽

Anaerobic Treatment ◽

Joint Effect ◽

Potato Processing ◽

Anaerobic Reactors ◽

Mixing Effects ◽

Mixing Intensity ◽

Solids Removal ◽

Steady State Performance

Four laboratory-scale reactors were used to study the effects of mixing intensity and mixing duration on the anaerobic treatment of potato-processing wastewater at 20 °C. The mixing intensities were set at impeller speeds of 0, 20, 50, and 100 rpm. Two mixing durations were studied: 45 and 15 min/h. It was found that both mixing intensities and mixing durations studied and their joint effect significantly affected the steady-state performance of the anaerobic reactors in treating the potato-processing wastewater with respect to organics and solids removals and methane production. Key words: mixing effects, anaerobic treatment, potato-processing wastewater, organics and solids removal, methane production.

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

Water Science & Technology ◽

10.2166/wst.1999.0061 ◽

1999 ◽

Vol 40 (1) ◽

pp. 305-312 ◽

Cited By ~ 17

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.

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Temperature effect on the anaerobic treatment of potato-processing wastewater

Canadian Journal of Civil Engineering ◽

10.1139/l82-064 ◽

1982 ◽

Vol 9 (3) ◽

pp. 549-557 ◽

Cited By ~ 1

Author(s):

K. C. Lin ◽

R. C. Landine ◽

S. Bliss

Keyword(s):

Temperature Effect ◽

Methane Production ◽

Accumulation Rate ◽

Oxygen Demand ◽

Anaerobic Treatment ◽

Methane Content ◽

Potato Processing ◽

Potato Waste ◽

Volumetric Rate ◽

Anaerobic Lagoon

The performance of a laboratory-scale anaerobic lagoon–filter system treating unsettled potato-processing wastewater has been studied under controlled temperature conditions below 20 °C. The wastewater contained approximately 2700 mg/L of chemical oxygen demand (COD) and 1380 mg/L of suspended solids (SS). The system, buffered with lime, was fed continuously; detention times were 7.0 and 1.5 days for the lagoon and filter, respectively. The loading rate was 0.35 kg COD/(m3∙day) based on lagoon volume. There was 100% recycling but no sludge wastage.Between 20 and 10 °C, the system removed approximately 94% of the COD and 95% of SS. Down to 4 °C removals of 85% of COD and 93% of SS were obtained. At 2 °C system failure was imminent. Sludge accumulation rate was highest at 6 °C (0.41 g of SS accumulated per gram SS fed), four times the rate at 20 °C. Total methane production varied from 0.35 m3/kg COD removed at 20 °C down to 0.24 m3/kg COD removed at 4 °C, with a 62% decrease in volumetric rate. Methane content in the gas was 75–84%. The filter had a higher methane production-to-COD removal ratio and a higher methane content than the lagoon. Keywords: anaerobic lagoon, anaerobic filter, temperature effect, potato waste.

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BIOGAS PRODUCTION BY ANAEROBIC TREATMENT OF WASTE MIXTURE CONSISTING OF CATTLE MANURE AND VEGETABLE REMAINS

Environmental Engineering and Management Journal ◽

10.30638/eemj.2012.108 ◽

2012 ◽

Vol 11 (4) ◽

pp. 849-856 ◽

Cited By ~ 3

Author(s):

Alvydas Zagorskis ◽

Pranas Baltrenas ◽

Antonas Misevicius ◽

Edita Baltrenaite

Keyword(s):

Biogas Production ◽

Anaerobic Treatment ◽

Cattle Manure ◽

Waste Mixture

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Vacuum Operation for Overloaded Anaerobic Treatment Systems

Water Science & Technology ◽

10.2166/wst.1989.0213 ◽

1989 ◽

Vol 21 (4-5) ◽

pp. 87-95

Author(s):

J. De Santis ◽

A. A. Friedman

Keyword(s):

Volatile Fatty Acids ◽

Loading Rate ◽

Anaerobic Treatment ◽

Optimum Operating ◽

Operating Pressure ◽

Simple Modification ◽

Anaerobic Reactors ◽

Fixed Film ◽

Solids Retention ◽

High Concentrations

Overloaded anaerobic treatment systems are characterized by high concentrations of volatile fatty acids and molecular hydrogen and poor conversion of primary substrates to methane. Previous experiments with fixed–film reactors indicated that operation with reduced headspace pressures enhanced anaerobic treatment. For these studies, four suspended culture, anaerobic reactors were operated with headspace pressures maintained between 0.5 and 1.0 atm and a solids retention time of 15 days. For lightly loaded systems (0.4 g SCOD/g VSS-day) vacuum operation provided minor treatment improvements. For shock organic loads, vacuum operation proved to be more stable and to support quicker recovery from upset conditions. Based on these studies and a companion set of bioassay tests, it was concluded that: (a) a loading rate of about 1.0 g SCOD/g VSS-day represents a practical loading limit for successful anaerobic treatment, (b) a headspace pressure of approximately 0.75 atm appears to be an optimum operating pressure for anaerobic systems and (c) simple modification to existing systems may provide relief for organically overloaded systems.

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