Treatment of Different Wastewaters from Pulp and Paper Industry in Methane Reactors
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A wastewater from an integrated paper mill with a COD of 1200 mg/dm3 was anaerobically treated in a multi-stage reactor. The BOD7 removal efficiencies of 60-75 % were achieved at maximal loading rates of 5-6 kg COD/m3d and HRT of 4-6 hours due to the granular sludge. Industrial sulphite evaporator condensates from Ca- and Na-processes were treated in anaerobic filters containing light gravel, plastic foam and power plant slag as filter media. The BOD7 removals of 78 % on average were achieved at loading rates of 1.8-3.3 kg COD/m3d with Ca-process evaporator condensates and 80 % BOD7 removals were achieved with Na-process condensates at loading rates of 3.5-4.1 kg COD/m3d.
2019 ◽
Vol 98
(12)
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pp. 1392-1401
2007 ◽
Vol 41
(13)
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pp. 4711-4714
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2010 ◽
Vol 56
(18)
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pp. 414-414
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1991 ◽
Vol 24
(3-4)
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pp. 411-415
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1988 ◽
Vol 20
(1)
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pp. 251-262
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2010 ◽
Vol 62
(7)
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pp. 1676-1681
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2002 ◽
Vol 45
(12)
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pp. 151-158
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