POLLUTION CONTROL REGULATIONS AND MONITORING TECHNOLOGY: A REVIEW OF RESEARCH AND DEVELOPMENT FROM THE PULP AND PAPER INDUSTRY

Author(s):  
Derek V. Ellis
1988 ◽  
Vol 20 (1) ◽  
pp. 25-36 ◽  
Author(s):  
A. Luonsi ◽  
J. Junna ◽  
I. Nevalainen

The recent development of Finnish pulp and paper industry external wastewater treatment has created positive results by reducing the oxygen consuming load (BOD7) of the recipients. This is due to the thirteen activated sludge plants and one anaerobic reactor which have been constructed during the last four years. The target values set in the form of suspended solids (SS) and BOD7 for 1985 (400 t BOD7/d) are expected to be achieved during 1987. Activated sludge plants have also created negative effects in the form of large amounts of surplus biological sludge and increased nutrient discharges, especially phosphorus which with reduced acute toxicity will increase the eutrophication of discharge areas. The share of activated sludge plants for the increased phosphorus discharges remains to be studied. The rapid increase started before the activated sludge plants started operation. In well operated activated sludge plant nutrient discharge is not increased. Although the specific water consumption and specific organic loads continuously decrease in pulp and paper production the increased production and more stringent requirements for pollution control prerequisite investments for external treatment. Therefore it is the time for efficient biological treatment plant construction and before 1995 a good number of mainly activated sludge plants will be constructed, for which time target values and some alternative guidelines to pollution control have been planned but not yet officially issued. Also requirements for CODCr, and total organic chlorine (TOCl) will be among the effluent quality criteria in the near future. When further requirements are issued the basis must be in the requirements of the biota which it is desired to live in the discharge areas. Much research is needed to find out how many of these requirements can be satisfied by modifications of present treatment processes. Thereafter the possibility of removing specific pollutants from the low volume fractions must be identified. The results of these studies must then be compared with the tertiary processes which can be added after the biological treatment plants which process the combined mill effluent. The problem must be regarded as a complex one because any substance removed from the wastewater will be found either in the sludge or in the air. The harmful compounds should be returned to normal ecological circulation or to the least harmful form and location in the most suitable waste stream.


1990 ◽  
Vol 20 (6) ◽  
pp. 825-836 ◽  
Author(s):  
David L. Frank ◽  
Asghedom Ghebremichael ◽  
Tae H. Oum ◽  
Michael W. Tretheway

This paper analyzes the productivity performance of the Canadian pulp and paper industry for the 1963–1984 period. The industry's productivity is first measured, then its sources are analyzed. Total factor productivity is used to measure industry productivity, and statistical estimation of neoclassical cost functions are used to determine sources of the productivity changes. In addition to decomposing the productivity changes into technical changes and changing the scale of the industry's output and capacity utilization, an attempt is also made to assess the impact of pollution control expenditures. The paper finds that although labour productivity grew at 2.5% per year (modest in comparison to other industries), the gross total factor productivity grew only by 1.2% per year. This is largely due to the fact that capital investment raises labour productivity but retards overall productivity. Of the 1.2% growth in total factor productivity, 0.88% was due to the increased scale of the industry output and 0.32% to technical change. Although there is no statistically conclusive evidence, the point estimate indicates that pollution control expenditures may have retarded productivity growth. However, this subject requires further investigation.


1991 ◽  
Vol 24 (3-4) ◽  
pp. 11-17 ◽  
Author(s):  
S. Lagergren ◽  
E. Nystrom

Current production figures, control measures and discharges from the Swedish pulp and paper industry are described together with future trends and possibilities. The emphasis is on discharges of chlorinated organic substances and internal methods to control such discharges.


1988 ◽  
Vol 20 (1) ◽  
pp. 207-210
Author(s):  
O. Airanne ◽  
S. Ruonala

The development of the pulp and paper industry is reviewed. It is pointed out that production processes must now consider environmental concerns in addition to the suitability of the final product. The difficulties of defining the total harmful effects of a process are outlined. It is concluded that there has been good progress from the environmental point of view, and that in the future, choices must be made to allocate scarce resources so that output in terms of environmental quality is maximized.


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