Anaerobic treatment and biogas recovery for sago wastewater management using a fluidized bed reactor

Saravanane, R.; Murthy, D. V. S.; Krishnaiah, K.

doi:10.2166/wst.2001.0360

Cited by 20 publications

(18 citation statements)

References 9 publications

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“…During the stepped increase of OLR, COD removal efficiencies were gradually increased. This was in general agreement with COD removal efficiencies were increased with time of operation (Saravanane et al, 2001). But, the reduction in HRT less than 12 h shown decreased trend in COD removal efficiencies in terms of both TCOD and SCOD.…”

Section: Start-up Of the Reactorsupporting

confidence: 88%

Treatment of poultry slaughterhouse wastewater in upflow anaerobic filter under low upflow velocity

Rajakumar

Meenambal²,

Banu

et al. 2010

Int. J. Environ. Sci. Technol.

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ABSTRACT:The wastewater discharged by poultry slaughterhouse industries are characterized mainly by high biochemical oxygen demand, high suspended solids and complex mixture of fats, proteins and fibers requiring systematic treatment prior to disposal. In this study, the performance of an upflow anaerobic filter reactor for treating Indian poultry slaughterhouse wastewater under low upflow velocity of 1.38 m/day at mesophilic temperature (29-35 ºC) was investigated. The reactor was inoculated with anaerobic non-granular sludge from an anaerobic reactor treating the poultry slaughterhouse wastewater. The reactor took 147 days for complete start-up with removal efficiencies of total chemical oxygen demand and soluble chemical oxygen demand of 70 and 79 % respectively. The maximum total chemical oxygen demand removal efficiency of 78 % was achieved at an organic loading rate of 10.05 kg/m 3 /day and at an hydraulic retention time of 12 h. The average methane content varied between 46 and 56 % and methane yield at maximum removal efficiency was 0.24 m 3 CH 4 /kg COD removed .day. Sludge granules of 1-2 mm were observed in between the packing media. Scanning electron microscope analysis revealed that sludge granules are composed of clumps of Methanosarcina clustered with less intertwined Methanosaeta fibre of granules. The lower velocity used in this study has achieved better performance of the reactor by creating active microbial formation with stable pH upto an organic loading rate of 14.3 kg/m 3 /day. This has proved that the poultry slaughterhouse wastewater can be treated using anaerobic filter reactor under low upflow velocity.

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Section: Start-up Of the Reactorsupporting

confidence: 88%

Treatment of poultry slaughterhouse wastewater in upflow anaerobic filter under low upflow velocity

Rajakumar

Meenambal²,

Banu

et al. 2010

Int. J. Environ. Sci. Technol.

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“…Khageshan and Govindan (1995) have reported that beyond an OLR of 11.6 kg COD/m 3 .day, gas production decreased during the treatment of synthetic Sago wastewater using anaerobic filter with basalt stone chips as filter medium. In contrast to the present observations, Saravanane et al, (2001) have reported a very high OLR of 60.5 kg COD/m 3 .day during the start up phase of treatment of synthetic Sago wastewater using a fluidized bed reactor. Interestingly, the efficiency of this reactor in terms of COD removal (82%) is lower than the value recorded during the present study (92%) during the start up.…”

Section: Discussioncontrasting

confidence: 99%

“…Interestingly, the efficiency of this reactor in terms of COD removal (82%) is lower than the value recorded during the present study (92%) during the start up. Further comparison between these two studies is not possible in the absence of data on HRT maintained by Saravanane et al, (2001). The anaerobic treatment of Sago wastewater using the Hybrid Upflow Anaerobic Sludge Blanket indicated promising results.…”

Section: Discussionmentioning

confidence: 99%

“…Processing of tapioca requires 20,000 to 30,000 L of water per ton of Sago; besides it produces equal quantity of wastewater, which is highly organic, foul smelling and acidic (Murthy and Patel, 1961;Sastry and Mohan, 1963). Various anaerobic technologies including conventional anaerobic treatment (Sastry et al, 1964;Tongkasane, 1970;Saroja and Sastry, 1972;Pescod and Thanh, 1977), high rate anaerobic treatment such as Anaerobic Filter (AF- Khageshan and Govindan, 1998) and Fluidized Bed (FB - Saravanane et al, 2001) have been attempted to treat Sago wastewater. The conventional treatment options are known to have low treatment efficiency owing to high concentrations of solids present in the wastewater.…”

Section: Introductionmentioning

confidence: 99%

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High rate anaerobic treatment of Sago wastewater using HUASB with PUF as carrier

Banu¹,

Kaliappan

Beck³

2006

Int. J. Environ. Sci. Technol.

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Sago industry is one of the major small-scale sectors in India and over 800 units are located in the southern State of Tamilnadu. Processing of sago generates enormous quantities of high strength wastewater requiring systematic treatment prior to disposal. The present study is an attempt to treat the sago wastewater using Hybrid Upflow Anaerobic Sludge Blanket (HUASB) reactor, which offers the advantages of both fixed film and up flow anaerobic sludge blanket treatment. HUASB reactor with a volume of 5.6 L was operated at Organic Loading Rates varying from 10.7 to 24.7 kg COD/m 3 .day. After 130 days of startup, the reactor produced appreciable decrease in COD of wastewater and removed solids efficiently. The COD removal varied from 91-87%. While the removal of Total Solids was in the range of 61-57%, that of volatile solids varied from 70-67%. The ideal OLR for the reactor was 23.5 kg COD/m 3 .day. The findings of the study open up newer possibilities of design low cost and compact onsite treatment systems with very short retention periods.

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“…The tapioca tubers are the raw material and it is converted into commercial sago through indigenous technology. During the process, on an average from 30,000 to 40,000 litre of effluent is generated per tonne of sago processed and it takes about 10 days for the water to be let out of the factory as effluent (Belliappa 1991;Saravanane et al 2001). The release of high content of the organic load along with the effluent when stored, results in obnoxious odour, irritating colour, lower pH and higher BOD and COD (Ayyasamy et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Bioremediation of sago industry effluent and its impact on seed germination (green gram and maize)

Ayyasamy

Banuregha

Vivekanandhan

et al. 2008

World J Microbiol Biotechnol

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In this study, we attempted two investigational systems: one is treatment of sago industry effluent by aerobic bacterial consortium and the other is impact of treated and untreated effluent on seed germination. For the treatment system, the starch degrading bacteria were isolated from sago industry effluent and effluent contaminated soil. The genera, Alcaligenes, Bacillus and Corynebacterium were found efficient in starch degradation. The selected isolates were tested for their efficiency on the degradation of starch both in Mineral Salts Medium (MSM) and in sago industry effluent. About 85% of the starch was degraded in MSM by a bacterial consortium composed of Alcaligenes, Bacillus and Corynebacterium, whereas in effluent the degradation of starch was only 63%. The physico-chemical properties such as electrical conductivity, total solids, suspended solids, dissolved solids, BOD, COD, nitrogen and phosphate were found decreased in effluent after 72 h. The pH of the effluent was relatively increased from 3 to 6.7. The study of seed germination (maize and green gram) was carried out at 25, 50, 75 and 100% concentrations of treated and untreated effluent using soil sowing method. Shoot length, root length, fresh weight, dry weight and chlorophyll content showed an increase when treated effluent was tested whereas a decrease of growth was noticed in untreated effluent tested seedlings. The results revealed that effluent treated by aerobic microorganisms has no negative impact on the seed germination and can be effectively used for irrigation.

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Anaerobic treatment and biogas recovery for sago wastewater management using a fluidized bed reactor

Cited by 20 publications

References 9 publications

Treatment of poultry slaughterhouse wastewater in upflow anaerobic filter under low upflow velocity

Treatment of poultry slaughterhouse wastewater in upflow anaerobic filter under low upflow velocity

High rate anaerobic treatment of Sago wastewater using HUASB with PUF as carrier

Bioremediation of sago industry effluent and its impact on seed germination (green gram and maize)

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