scholarly journals Performance of a UASB Effluent Treatment Plant Treating Malt Ingredient Manufacturing Wastewater

2017 ◽  
Vol 6 (2) ◽  
pp. 198 ◽  
Author(s):  
Ryland Cairns ◽  
Paul Mead
Keyword(s):  
Treatment Plant ◽  
High Strength ◽  
Cost Effective ◽  
Full Scale ◽  
Effluent Treatment ◽  
Operational Performance ◽  
Organic Loading Rate ◽  
Anaerobic Sludge ◽  
Effluent Treatment Plant ◽  
Wide Range

Anaerobic Digestion has gained popularity in recent years due to its significant contribution towards achieving waste management and renewable energy targets. One particular technology that has been widely used in the treatment of high strength organic wastewaters across a wide range of industries is upflow anaerobic sludge blankets (UASBs). A malt ingredients manufacturing factory has successfully applied this technology as a cost effective way to treat their high strength effluent, however unlike other industries there is a lack of research regarding the wastewater characterisation or UASB performance at either lab or full scale. This paper aims to address this gap in knowledge and provide information on both the wastewater composition and on the ability of a full-scale mesophilic UASB to treat it over a period of 638 days. Analysis of the wastewater revealed that the manufacture of malt ingredients produces a high strength effluent, which fits within the realms of previously documented wastewaters despite not sharing a similar characterisation profile. Mesophilic UASB has been show to be an effective and robust technology option for the treatment of this type of wastewater displaying steady operational performance even when conditions were in excess of the design limit. Due to the robust operational performance of the plant the main factor limiting total methane production was shown to be the organic loading rate. 

Anaerobic effluent treatment by a pilot and full-scale plant at a chemical industrial complex

2000 ◽  
Vol 42 (5-6) ◽  
pp. 283-287 ◽  
Author(s):  
P. Boulenger ◽  
W. Driessen ◽  
E. van de Werfhorst ◽  
M. Tielbaard
Keyword(s):  
Process Design ◽  
Pilot Plant ◽  
Pilot Trial ◽  
Treatment Plant ◽  
Anaerobic Treatment ◽  
Full Scale ◽  
Effluent Treatment ◽  
Uasb Reactor ◽  
Industrial Complex ◽  
Effluent Treatment Plant

To test the feasibility of anaerobic treatment of an effluent from a chemical factory producing intermediates for synthetic fibres, test work with a 45 l UASB pilot plant was conducted. Following its successful operation, a full-scale anaerobic effluent treatment plant including a 400 m3 combined pre-acidification tank and a 990 m3 Biopaq®-UASB reactor was constructed. The results of the pilot plant and the full-scale anaerobic treatment plant have been compared, similarities and differences in performance are presented and evaluated. COD removal efficiencies above 80% and BOD efficiencies in excess of 85% achieved in the pilot trial were confirmed by the full-scale installation. Overall process design as well as operational data from the pilot trial and the full-scale plant is presented. Despite the differences in configuration, operational results of the full-scale plant are comparable to the results obtained from the pilot plant study making such a pilot plant a useful tool for the process design of an full-scale anaerobic effluent treatment plant.

The Efficiency of a Biological Activated Sludge Effluent Treatment Plant with Extended Aeration

1988 ◽  
Vol 20 (1) ◽  
pp. 65-72 ◽  
Author(s):  
Rurik Skogman ◽  
Reino Lammi
Keyword(s):  
Activated Sludge ◽  
Suspended Solids ◽  
Treatment Plant ◽  
Forest Products ◽  
Effluent Treatment ◽  
Chlorinated Phenols ◽  
Forest Products Industry ◽  
Effluent Treatment Plant ◽  
Closed Systems ◽  
Treating Effluent

The requirements imposed on the Finnish forest products industry by the water authorities have focused on the reduction of BOD and suspended solids in the wastewaters. The industry has tried to comply with these requirements, first through internal measures such as process changes and closed systems. When these have not been sufficient, external treatment has been resorted to. The Wilh. Schauman Company in Jakobstad has chosen activated sludge with extended aeration from among the available methods for treating effluent. The plant has operated since the beginning of 1986 with extremely good results. In addition to the reduction of BOD and suspended solids, there has been a marked decrease of chlorinated phenols. Chlorinated substances with higher molecular weight are also removed during the process.

Nitrite reduction and methanogenesis in a single-stage UASB reactor

2015 ◽  
Vol 72 (12) ◽  
pp. 2236-2242 ◽  
Author(s):  
L. I. Borges ◽  
C. M. López-Vazquez ◽  
H. García ◽  
J. B. van Lier
Keyword(s):  
Domestic Wastewater ◽  
High Strength ◽  
Single Stage ◽  
Nitrite Reduction ◽  
Upflow Anaerobic Sludge Blanket ◽  
Uasb Reactor ◽  
Organic Loading Rate ◽  
Anaerobic Sludge ◽  
N Removal

In this study, nitrite reduction and methanogenesis in a single-stage upflow anaerobic sludge blanket (UASB) reactor was investigated, using high-strength synthetic domestic wastewater as substrate. To assess long-term effects and evaluate the mechanisms that allow successful nitrite reduction and methanogenesis in a single-stage UASB, sludge was exposed to relatively high nitrite loading rates (315 ± 13 mgNO2−-N/(l.d)), using a chemical oxygen demand (COD) to nitrogen ratio of 18 gCOD/gNO2−-N, and an organic loading rate of 5.4 ± 0.2 gCOD/(l.d). In parallel, the effects of sludge morphology on methanogenesis inhibition were studied by performing short-term batch activity tests at different COD/NO2−-N ratios with anaerobic sludge samples. In long-term tests, denitrification was practically complete and COD removal efficiency did not change significantly after nitrite addition. Furthermore, methane production only decreased by 13%, agreeing with the reducing equivalents requirement for complete NO2− reduction to N2. Apparently, the spatial separation of denitrification and methanogenesis zones inside the UASB reactor allowed nitrite reduction and methanogenesis to occur at the same moment. Batch tests showed that granules seem to protect methanogens from nitrite inhibition, probably due to transport limitations. Combined COD and N removal via nitrite in a single-stage UASB reactor could be a feasible technology to treat high-strength domestic wastewater.

Soft Drinks Industry Wastewater Treatment

1992 ◽  
Vol 25 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Larbi Tebai ◽  
Ioannis Hadjivassilis
Keyword(s):  
Biological Treatment ◽  
Industrial Effluent ◽  
Treatment Plant ◽  
Soft Drinks ◽  
Effluent Treatment ◽  
Production Lines ◽  
Effluent Treatment Plant ◽  
Industrial Effluent Treatment ◽  
Effluent Characteristics ◽  
Industry Wastewater

Soft drinks industry wastewater from various production lines is discharged into the Industrial Effluent Treatment Plant. The traditional coagulation/flocculation method as first step, followed by biological treatment as second step, has been adopted for treating the soft drinks industry wastewaters. The performance of the plant has been evaluated. It has been found that the effluent characteristics are in most cases in correspondence with the requested standards for discharging the effluent into the Nicosia central sewerage system.

Sign in / Sign up

Export Citation Format

Share Document