Effects of Chemical Spills on Activated Sludge Treatment Performance in Pulp and Paper Mills

Sarlin, T.; Halttunen, S.; Vuoriranta, P.; Puhakka, Jaakko A.

doi:10.2166/wst.1999.0728

Cited by 7 publications

(8 citation statements)

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“…BOD 7 load from 90,000 t/a in 1990 to 10,000 t/a in 2004 (Finnish Forest Industries Federation 2005). This illustrates improvements in production technology and effluent treatment that have taken place in mills, but may also reflect the fall in the number of accidental spills (Sarlin et al 1999). The area investigated, Southern Lake Saimaa, has been studied widely before (Oikari 1986;Soimasuo et al 1995;Karels et al 2001).…”

Section: Assessment Of Exposurementioning

confidence: 92%

Exposure assessment of fishes to a modern pulp and paper mill effluents after a black liquor spill

Meriläinen

Oikari

2007

Environ Monit Assess

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Conjugated resin acids (RAs) in fish bile are considered a sensitive chemical indicator of exposure to pulp and paper mill effluent, and were used in this study to monitor the post-spill situation of a lake area (Southern Lake Saimaa) contaminated by black liquor discharged from a mill in June 2003. From the exposure perspective of populations of wild roach and perch, which were studied for their bile RAs at four time periods (July 2003, September 2003, May 2004, July 2004), the exceptional event passed in 2 months or less. Perch had lower concentration of RAs in bile than roach in all sampling areas and all times. Besides the current emissions present in the water column, part of the exposure status of the roach population to RAs seemed to derive from historically contaminated sediments. In order to test this hypothesis, a laboratory experiment with perch and roach, along with three teleosts (rainbow trout, brown trout and whitefish), was conducted. The species were simultaneously exposed for 7 days to RAs (23 microg/l). We calculated a perch/roach-ratio to investigate the difference in origin of exposure between perch and roach populations in the wild and in the laboratory. One year after the spill, the perch/roach-ratio of bile RAs was 0.25 (CV 25%) at 1 km from the mill. This is in contrast to that found under the sole waterborne conditions (0.44; CV 24%), supporting the idea that sediments serve as an additional source of RAs in roach. Additionally, bioconcentration factor log BCF(bile(RA)) was calculated to assess hepatobiliary performance and the capacity to excrete RAs in fish.

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Section: Assessment Of Exposurementioning

confidence: 92%

Exposure assessment of fishes to a modern pulp and paper mill effluents after a black liquor spill

Meriläinen

Oikari

2007

Environ Monit Assess

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“…The activated sludge process was developed in the early 1900s for the treatment of domestic wastewater, and it has since been adapted for removing biodegradable organic matter from industrial wastewater (Dufresne et al 1998;Sarlin et al 1999;Frolund et al 1995;Chen and Lo 2006). Currently, it is widely employed in the treatment of both municipal and industrial wastewaters.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Biodegradability of Aerobic Sludge by Bioaugmentation for Pulping Effluent Treatment

Chen¹,

Yang²,

Chen³

et al. 2014

BioResources

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To demonstrate the feasibility of bioaugmentation in enhancement of the biodegradation of pulping effluent, aerobic sludge was intensified with superior mixed flora. The differences between intensified aerobic activated sludge and original sludge were compared. The results showed that the chemical oxygen demand (COD) of pulping effluent treated with the intensified sludge dropped to a much lower level compared with the original sludge, which indicated that the biodegradability of sludge was enhanced by bioaugmentation. The growth kinetics of the sludges were established. The growth rate V max of the intensified sludge was elevated from 7.8×10 -3 to 7.1×10 -3, while the saturation constant Ks decreased from 0.33 to 0.21 after bioaugmentation. In addition, the degradation kinetics showed that the equation coefficient of sludge increased from 4.6×10 -3 to 6.4×10 -3, confirming the intensification of biodegradation as a result of bioaugmentation.

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“…The widespread application of biocides in many industries to overcome the growth of planktonic cells and/or sessile cells in a biofilm can cause environmental and ecological problems because sooner or later the biocides have to be discharged into the environment either natural water or municipal effluent treatment plants (Johnston et al 1998;Reuter 1998;Bailey et al 1999;Sarlin et al 1999;Juergensen et al 2000;Nishihara et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of an aldehyde biocide in rotating biological contactors

Laopaiboon

Phukoetphim

Vichitphan

et al. 2008

World J Microbiol Biotechnol

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Biodegradation of an aldehyde biocide, glutaraldehyde (GA), in a single-stage laboratory-scale rotating biological contactor (RBC) was studied under biocide or organic loadings (OL) of 12-66 g COD m -2 day -1 and hydraulic retention times (HRT) of 0.6-3.0 h. Biofilms on the RBC were acclimated in 180 ppm GA at a hydraulic loading (HL) of 0.18 m 3 m -2 day -1 and the HRT of 0.60 h. The results showed that under a constant initial chemical oxygen demand (COD) concentration and sufficient mineral salts available, the degree of GA removal in the RBC system was increased with either decreasing OL or increasing HRT. After a period of acclimation, treatment efficiency in terms of GA removal by the RBC receiving GA as a sole carbon source was 89%. The biofilms played an important role in biodegradation of biocide in the RBCs, whereas biooxidation of their planktonic counterparts was totally inhibited in the presence of 50 ppm GA. The biochemical oxygen demand (BOD) test could be used as an appropriate analytical procedure for investigating the efficiency of wastewater treatment units when seed was acclimated and had adequate amount.

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Effects of Chemical Spills on Activated Sludge Treatment Performance in Pulp and Paper Mills

Cited by 7 publications

References 0 publications

Exposure assessment of fishes to a modern pulp and paper mill effluents after a black liquor spill

Exposure assessment of fishes to a modern pulp and paper mill effluents after a black liquor spill

Enhanced Biodegradability of Aerobic Sludge by Bioaugmentation for Pulping Effluent Treatment

Biodegradation of an aldehyde biocide in rotating biological contactors

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