scholarly journals Purification of pulp and paper mill effluent through Typha and Canna using constructed wetlands technology

2011 ◽  
Vol 1 (4) ◽  
pp. 237-242 ◽  
Author(s):  
Neetu Rani ◽  
R. C. Maheshwari ◽  
Vivek Kumar ◽  
V. K. Vijay
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Oxygen Demand ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
Wastewater Treatment Process ◽  
Paper Mill Effluent ◽  
Paper Mill Wastewater

The use of constructed wetlands (CW) to treat domestic as well as industrial wastewater is rapidly emerging as a viable alternative in India. Constructed wetland systems offer several potential advantages as a wastewater treatment process. These advantages include simple operation and maintenance and lower construction and operating costs. The study evaluated the effectiveness of the subsurface flow constructed wetland for pulp and paper mill wastewater treatment and also the effectiveness of plant species. A pilot scale study was conducted to examine the feasibility of a CW system for treatment of pulp and paper mill wastewater during summers as well as winters at different hydraulic retention time (HRT) such as 1.5 days, 3.5 days and 6.5 days. Wetland beds were prepared with easily available plants such as Typha angustifolia and Canna indica. Specific performance objectives were to decrease biochemical oxygen demand (BOD), chemical oxygen demand (COD), total solids (TS) and color. Comparison of mean inlet and outlet concentrations showed that the CW system could effectively reduce the output of TS (87.6 ± 1.1%), COD (86.6 ± 2.0%), BOD5 (80.01 ± 0.1%), color (89.4 ± 0.6%) during summer and TS (72.15 ± 0.71%), COD (70.94 ± 2.3%), BOD5 (72.07 ± 2.2%) and color (74.90 ± 0.47%) during winter at 3.5 days HRT.

Water Quality of the River Sava at the Inflow of a Pulp and Paper Mill Effluent

1990 ◽  
Vol 22 (5) ◽  
pp. 189-194 ◽  
Author(s):  
V. V. Cibulić
Keyword(s):  
Treatment Plant ◽  
Oxygen Demand ◽  
Paper Mill ◽  
Negative Influence ◽  
Pulp And Paper ◽  
Water Levels ◽  
Toxic Substances ◽  
Pulp And Paper Mill ◽  
Paper Mill Effluent ◽  
High Concentrations

The results of investigations into the effects of wastewaters from pulp and paper production on the River Sava are presented in this paper. Two situations were studied, i.e., when the treatment plant was in operation and when it was not working. The results of the investigations indicated that the wastewaters had significant effects on the Sava. Chemical oxygen demand (COD) and biochemical oxygen demand (BOD) were increased and some toxic substances were present at high concentrations, e.g., phenols, oils and grease, dyestuff, etc. The negative influence of the wastewaters was greater during the summer, at low water levels in the Sava. The Sava is a tributary of the River Danube, into which the pollution from this river finally flows. Regardless of the water flow rates, toxic substances are constantly accumulating, and, as a result, even such large systems as the Danube and the Sava are becoming more and more polluted.

Molecular characterization of microbial communities in Canadian pulp and paper activated sludge and quantification of a novelThiothrix eikelboomii-like bulking filament

2006 ◽  
Vol 52 (5) ◽  
pp. 494-500 ◽  
Author(s):  
Tim J Dumonceaux ◽  
Janet E Hill ◽  
Carl P Pelletier ◽  
Michael G Paice ◽  
Andrew G Van Kessel ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Microbial Community ◽  
Activated Sludge ◽  
Type Strain ◽  
Suspended Solids ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
Chaperonin 60 ◽  
Paper Mill Wastewater

We examined the microbial community structure and quantified the levels of the filamentous bulking organism Thiothrix eikelboomii in samples of activated sludge mixed liquor suspended solids (MLSS) from Canadian pulp and paper mills. Libraries of chaperonin 60 (cpn60) gene sequences were prepared from MLSS total microbial community DNA and each was compared with cpnDB, a reference database of cpn60 sequences (http://cpndb.cbr.nrc.ca) for assignment of taxonomic identities. Sequences similar to but distinct from the type strain of T. eikelboomii AP3 (ATCC 49788T) (~89% identity over 555 bp) were recovered at high frequency from a mill sample that was experiencing bulking problems at the time of sample collection, which corresponded to microscopic observations using fluorescent in situ hybridization with commercially available 16S rDNA-based probes. We enumerated this strain in five mill-derived MLSS samples using real-time quantitative PCR (qPCR) and found that two samples had high levels of the bulking strain (>1012genomes/g MLSS) and two contained lower but detectable levels of this organism. None of the mill samples contained cpn60 sequences that were identical to the type strain of T. eikelboomii. This technique shows promise for monitoring pulp and paper mill wastewater treatment systems by detecting and enumerating this strain of T. eikelboomii, which may be specific to pulp and paper mill wastewater treatment systems.Key words: activated sludge, biological treatment, bulking; chaperonin 60, cpn60, filamentous bacteria, mixed liquor suspended solids, microbial communities, 021N, qPCR, settling, Thiothrix.

scholarly journals A review on bioremediation of pulp and paper mill effluent – An alternative to conventional remedial technologies

2018 ◽  
Vol 10 (1) ◽  
pp. 367-374 ◽  
Author(s):  
Sangeeta Madan ◽  
Preeti Sachan ◽  
Utkarsh Singh
Keyword(s):  
Biological Treatment ◽  
Oxygen Demand ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Residual Effects ◽  
Organic Load ◽  
Pulp And Paper Mill ◽  
Paper Mills ◽  
Paper Mill Effluent ◽  
Paper Mill Effluents

At present, a large amount of water required for paper production and various chemicals has been identified in effluents, which is produced at different steps of paper making in paper mills. The pulp and paper industry is typically related to pollution difficulties related to high biological oxygen demand (BOD), chemical oxygen demand (COD), colour, suspended solids, lignin and chlorinated compounds. Several studies have been made on eliminate these difficulties of pulp and paper effluents, the problem still continues. Although the physical and chemical methods are on the track of treatment, they are not on par with biological treatment because of cost ineffectiveness and residual effects. The biological treatment is known to be effective in reducing the organic load and toxic effects of paper mill effluents. Some microorganisms including bacteria and fungi have been involved in degrading the chemicals present in pulp and paper mill effluent. This article is an overview of the attempts made by several researchers worldwide to use biotechnological methods for degradation of the toxic compounds present in pulp and paper mill effluents by using fungi, bacteria, algae and enzymes. The current study clearly shows that application of native dominant bacterial and fungal isolates may be used forthe treatment of large pulp and paper mills effluents.

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