The Manufacture of Pulp and Paper: A Textbook of modern pulp and paper mill practice. Prepared Under the Direction of the Joint Executive Committee on Vocational Education Representing the Pulp and Paper Industry of the U.S. and Canada. Vol. 111. Preparat

2010 ◽  
Vol 56 (18) ◽  
pp. 414-414
Keyword(s):  
Vocational Education ◽  
Executive Committee ◽  
Paper Industry ◽  
Paper Mill ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
The U.S

scholarly journals EFFECTS OF GENOME INSTABILITY IN LYMPHOCYTES AND BUCCAL EPITHELIOCYTES OF CHILDREN FROM THE CITY WITH BIG PULP AND PAPER INDUSTRY

2019 ◽  
Vol 98 (12) ◽  
pp. 1392-1401
Author(s):  
V. V. Yurchenko ◽  
Faina I. Ingel ◽  
N. A. Urtseva ◽  
E. K. Krivtsova ◽  
L. V. Akhaltseva
Keyword(s):  
Genomic Instability ◽  
Genome Instability ◽  
Micronucleus Test ◽  
Paper Industry ◽  
Paper Mill ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
Buccal Epithelial Cells ◽  
The City

Introduction. Analysis of literature has shown genotoxicants (mutagens and carcinogens) to be present in the atmospheric emissions of pulp and paper industry (PPI). Moreover, among PPI workers from different countries, there was identified an additional risk of cancer, which suggests its high probability among residents of the cities where the PPI is located. The recognized index of genotoxic effects is an increased level of genome instability, which is determined, in particular, in the micronucleus test. The scope of the study - the comparative analysis of the effects of genomic instability in the two tissues - blood lymphocytes cultured with Cytochalasin B, and buccal epithelial cells in the second grade school children (8-9 years old, boys and girls), whose schools were located at different distances from the pulp and paper mill. Material and methods. The study was carried out in the city of Koryazhma, the Arkhangelsk Region (42000 citizens), where the pulp and paper plant as the city-forming industry was located. For the analysis, we subdivided the territories on which the schools were located, into 3 groups according to their distance from the pulp and paper mill. The effects of genomic instability were determined by cytome analysis in the micronucleus test. Results. Cytome analysis of cultivated lymphocytes demonstrated that levels of genome instability indices (including cell frequencies with micronuclei and nucleoplasm bridges, apoptosis, as well as changes in the spectrum of cell populations) to decrease along with the rising the distance between the pulp and paper mill and schools where the children go. In buccal epithelial cells, the manifestations of genomic instability effects were less systematic, which did not allow making a definitive conclusion. At the same time, in both tests, gender differences in the results of cytome analysis were revealed (for example, the alteration of frequency of lymphocytes with genetic damage dependence on the distance between schools and the PPI was more pronounced among boys). Conclusion. According to the results of this study and taking into consideration the data of literature, we hypothesized that the discovering of gender dimorphism in the effects of genome instability may indicate the presence of toxic and/or genotoxic compounds in an environment.

The Eutrophication of Pulp and Paper Wastewater Recipients

1991 ◽  
Vol 24 (3-4) ◽  
pp. 411-415 ◽  
Author(s):  
J. Wartiovaara ◽  
P. Heinonen
Keyword(s):  
Biological Treatment ◽  
Nutrient Loading ◽  
Paper Industry ◽  
Paper Mill ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
Paper Wastewater ◽  
The Cost

During recent years the BOD-loading of pulp and paper mill wastewaters has decreased dramatically, due to more effective circulation of water in the processes, and the new activated sludge biological treatment plants. This traditional threat to the environment has been forgotten by the scientists who nowadays are more interested in the role of chlorine compounds discharged from bleaching processes. However, eutrophication due to nutrient loading is still present in many recipients of pulp and paper industry. The BOD-reduction has often been carried out on the cost of adding nutrients, pnosphorus and nitrogen to the purification processes. The biological treatment has also decreased the inhibitive effect of wastewater on the biological production of the recipient water body. Therefore, the eutrophication arises immediatly. The authors worry about the research of nutrients; loadings, development trends and eutrophication effects.

The Use of Enzymes for Wastewater Treatment in the Pulp and Paper Industry – A New Possibility

1988 ◽  
Vol 20 (1) ◽  
pp. 251-262 ◽  
Author(s):  
R. Hakulinen
Keyword(s):  
Wastewater Treatment ◽  
Lignin Degradation ◽  
Paper Industry ◽  
Paper Mill ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
Research Activity ◽  
Paper Mill Waste ◽  
Mill Waste

Biological systems have been employed successfully for manv years in the treatment of pulp and paper mill waste water. Previously, not very much was known about enzymes and their possibilities in pulp and paper industry wastewater treatment. There is currently a lot of research activity in the enzymology of lignin degradation. Ligninase, cellulase, peroxidase, etc. are the most important enzymes, especially peroxidase, which is used for color removal in bleaching effluents. It is also possible to mix enzymes together with special microbes, which normally do not have high enzvme activity, and remove recalcitrant and harmless compounds from wastewater. The use of novel enzymes and rDNA technology in sludge and wastewater treatment will also be discussed.

Effect of ozonation on activated sludge from pulp and paper industry

2010 ◽  
Vol 62 (7) ◽  
pp. 1676-1681 ◽  
Author(s):  
S. Gupta ◽  
S. K. Chakrabarti ◽  
S. Singh
Keyword(s):  
Activated Sludge ◽  
Paper Industry ◽  
Bacterial Biomass ◽  
Cost Effective ◽  
Paper Mill ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
Secondary Sludge ◽  
Predominant Process

Aerobic biological treatment with activated sludge is the predominant process all over the world for treatment of pulp and paper industry wastewater. 50–70% of the biodegradable organic material is oxidized to CO2 and the rest is converted to bacterial biomass, typically termed as excess sludge or waste activated sludge (WAS). Handling and disposal of WAS in general and in particular from the pulp and paper industry face different processing difficulties, regulatory stringency due to organochlorine contamination and reluctance of people for reuse. With an objective of reducing the net disposable biomass, ozonation of WAS from a pulp and paper mill and from a laboratory scale batch activated sludge process operated with the wastewater and bacterial seed of the same pulp and paper mill have been carried out. With the mill sludge having predominant filamentous organisms 18% MLSS was reduced at an ozone dosage of 55 mg O3/g dry MLSS solid (DS) resulting in 2.5 times COD increase. With the laboratory sludge which is well structured and flocculating, only 6% MLSS was reduced at an ozone dosage of 55 mg O3/g DS. Ozonation mineralizes 26% and 20% AOX compounds embedded in the secondary sludge in the mill and laboratory sludge respectively at an ozone dosage of 55 mg O3/g DS. During ozonation, absorbed/adsorbed lignin on biomass was released which resulted in increased colour concentration. Ozonation can be a potential oxidative pretreatment process for reducing the WAS and paving the way for cost effective overall treatment of WAS.

scholarly journals Development of Measures to Reduce the Negative Impact of Sewage Sludge from Pulp and Paper Production

2019 ◽  
Vol 8 (3S) ◽  
pp. 330-334
Keyword(s):  
Sewage Sludge ◽  
Negative Impact ◽  
Paper Industry ◽  
Technical Information ◽  
Paper Mill ◽  
Pulp And Paper Industry ◽  
Maximum Energy ◽  
Current Strength ◽  
Pulp And Paper ◽  
Pulp And Paper Mill

The article analyzed the technogenic load of a pulp and paper mill as a source of waste generation. Based on the analysis, the waste groups of the pulp and paper industry with the excess of education standards were identified, and among these groups suitable for recycling and reuse. Among such wastes, osprey was isolated - waste from the processing of sewage sludge from the pulp and paper industry. The stages of the technological process of manufacturing pulp and paper products from recycled materials were also considered. An analysis of scientific and technical information was carried out, within the framework of which the features of the main technical solutions in the field of processing and disposal of osprey were investigated. An electro-osmotic plant was developed, the essence of which is to achieve maximum energy efficiency in the process of dewatering sewage sludge from the pulp and paper industry. According to the results of the experiments, a correlation assessment was made of the parameters of electroosmotic dehydration: reduction of the residual mass of the osprey and current strength on the plant plates during electroosmosis, from which it follows that the values of the cross-correlation coefficient are significantly affected by the electric field strength of the electroosmosis.

Treatment of Different Wastewaters from Pulp and Paper Industry in Methane Reactors

1985 ◽  
Vol 17 (1) ◽  
pp. 223-230 ◽  
Author(s):  
P K Latola
Keyword(s):  
Power Plant ◽  
Paper Industry ◽  
Granular Sludge ◽  
Paper Mill ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
Plastic Foam ◽  
Loading Rates ◽  
Multi Stage ◽  
Removal Efficiencies

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.

The World Eucapulp Industry and its Impact on the Northern U.S. Pulp and Paper Industry

1990 ◽  
Vol 7 (4) ◽  
pp. 158-163
Author(s):  
Jeffrey C. Stier
Keyword(s):  
Paper Industry ◽  
Pulp And Paper Industry ◽  
World Market ◽  
Pulp And Paper ◽  
Annual Rate ◽  
Structural Shift ◽  
The North ◽  
The World ◽  
Evolutionary Pace ◽  
The U.S

Abstract Eucalyptus woodpulp (eucapulp) emerged as a significant force in the world market for paper grade pulp approximately a decade ago, and since 1976, production has increased at a compound annual rate of growth exceeding 20%. Recently, the closure of a Wisconsin pulpmill was associated with imports of eucapulp, and fears that a rapid influx of eucapulp would destroy local pulpwood markets spread throughout the northern U.S. forestry community. Eucapulp is an ideal fiber furnish for production of tissue and printing and writing papers, both of which are mainstays of the pulp and paper industry in the North. Eucapulp represents a major structural shift in the world pulp and paper sector, and it is likely to have a continuing impact on the U.S. industry, especially in the North. However, imports of eucapulp and of papers made from eucapulp are expected to increase in the future at an evolutionary pace and not to pose an immediate threat to the regional industry. North. J. Appl. For. 7:158-163, December 1990.

Sludge Utilization and Reduction Experiences in the Pulp and Paper Industry

1992 ◽  
Vol 26 (9-11) ◽  
pp. 2105-2108 ◽  
Author(s):  
I. Öztürk ◽  
V. Eroglu ◽  
A. Bastürk
Keyword(s):  
Energy Requirement ◽  
Paper Industry ◽  
Paper Mill ◽  
Pilot Scale ◽  
Pulp And Paper ◽  
Upflow Anaerobic Sludge Blanket ◽  
Anaerobic Sludge ◽  
Pulp And Paper Mill ◽  
Biological Sludge ◽  
Study Results

This paper presents pilot-scale experiences on utilization of primary sludges from an integrated pulp and paper mill in the manufacturing of hardboard. The results have shown that the primary sludge added in 1/4 ratio yields the best result considering quality and operating aspects for the hardboard production. Lab-scale anaerobic treatability studies were carried out by an upflow anaerobic sludge blanket reactor (UASBR) with a volume of 10.351 using settled effluents from the related industry as the feed. Anaerobic treatability study results have shown that such an application prior to existing activated sludge system may provide 70 percent reduction in energy requirement for aeration and about 65 percent net reduction in excess biological sludge production.

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