Reduction of Pulp and Paper Industry Effluent Loading

1986 ◽  
Vol 18 (3) ◽  
pp. 109-125 ◽  
Author(s):  
A. Luonsi ◽  
P. Vuoriranta ◽  
P. Hynninen
Keyword(s):  
Paper Industry ◽  
Pulp Mill ◽  
Pulp And Paper Industry ◽  
Anaerobic Treatment ◽  
Pulp And Paper ◽  
Production Water ◽  
Lower Volume ◽  
Water Recirculation ◽  
Pulp Mill Effluents ◽  
Industry Effluent

The pulp and paper industry consumes large volumes of water i.e. 10-300 m3/t of product. The most important measure in reducing the pollution charge is a reduction in water consumption. Thereafter, efficient and more easily controllable methods can be used for the treatment of lower volume, more concentrated and warmer wastewaters. Application of medium consistency techniques in production, water recirculation, and more efficient use of wood are pushing development in this direction. It is clear however, that these development trends will undergo certain practical limitations governed by the actual production process. The trends in production favour the utilization of anaerobic techniques in wastewater treatment. Both the purification efficiency and the economy of the treatment system can be improved as seen from the examples in this paper. However, the conventional aerobic treatment is under continuous development and it will be applied as a completing stage of anaerobic treatment. Modifications of the activated sludge process can be applied especially for rather dilute composite pulp mill effluents as presented in this paper.

The Regulator's Dilemma: Regulation of Pulp Mill Effluents in the Canadian Federal State

1996 ◽  
Vol 29 (3) ◽  
pp. 469-496 ◽  
Author(s):  
Kathryn Harrison
Keyword(s):  
Federal Government ◽  
Paper Industry ◽  
Pulp Mill ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
National Standards ◽  
Federal State ◽  
Environmental Standards ◽  
Tier System ◽  
Pulp Mill Effluents

AbstractThe disclosure in 1987 that dioxins were present in pulp mill effluents prompted governments throughout the world to revise their environmental standards for the pulp and paper industry. This article uses the pulp and paper case to examine the dynamics of environmental standard setting within the Canadian federal state. Provincial regulatory incentives are analyzed using two-player games as a heuristic. The article then considers the federal government's role in establishing national standards. Many authors have emphasized the importance of federal involvement to overcome provincial reluctance to regulate unilaterally, lest jobs be lost to jurisdictions with weaker environmental standards. However, few have considered whether the federal government has incentives to do just that. It is argued that those incentives are weak at best, in light of resistance from both the regulated industry and jurisdictionally defensive provinces. In environmental regulation of the Canadian pulp and paper industry, federal reluctance resulted in a two-tier system of environmental standards with strict standards for the largest provinces, and weaker ones for smaller provinces that rely more on the federal government.

Energy efficient aeration of wastewaters from the pulp and paper industry

2010 ◽  
Vol 62 (10) ◽  
pp. 2364-2371 ◽  
Author(s):  
M. Sandberg
Keyword(s):  
Oxygen Transfer ◽  
Biological Treatment ◽  
Bubble Column ◽  
Paper Industry ◽  
Electrical Power ◽  
Treatment Plant ◽  
Pulp Mill ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
Paper Mills

More than 50% of the electrical power needed to treat pulp and paper industry effluents is used for aeration in biological treatment stages. A large share of the oxygen that passes through the wastewater is not consumed and will be found in the off-gas. Energy can be saved by aerating under conditions where the oxygen transfer is most efficient, for example at low concentrations of dissolved oxygen Consider the sludge as an energy source; electricity can be saved by avoiding sludge reduction through prolonged aeration. High oxygen transfer efficiency can be retained by using the oxygen consumption of biosolids. Quantified savings in the form of needed volumes of air while still achieving sufficient COD reduction are presented. The tests have been made in a bubble column with pulp mill process water and sludge from a biological treatment plant. These were supplemented with case studies at three pulp and paper mills.

Co-cooking moso bamboo with hardwoods

TAPPI Journal ◽  
2014 ◽  
Vol 13 (6) ◽  
pp. 9-15 ◽  
Author(s):  
TROY RUNGE ◽  
JACKIE HEINRICHER ◽  
DAN MEIER
Keyword(s):  
Paper Industry ◽  
Pulp Mill ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
Pulp Mills ◽  
Fiber Properties ◽  
Kraft Process ◽  
Native Forests ◽  
Hardwood Species ◽  
Gradual Introduction

Bamboo is one of the world’s fastest growing feedstocks and represents a promising nonwood resource that can be utilized in the pulp and paper industry. The timber varieties offer low feedstock costs, can be processed similarly to trees from a logistics standpoint, and have useful fiber properties for papermaking. Plantations have not yet been established due to propagation costs, limiting adoption of bamboo as a pulp feedstock to smaller pulp mills primarily in China, where there are native forests. Recent advances in micropropagation may allow lower establishment costs, but gradual introduction into the supply chain will be required. One concept is to gradually include bamboo feedstock into an established pulp mill as plantations are established, using co-cooking with a wood species. Previous work has shown that bamboo cooks fairly easily using the kraft process with conditions similar to hardwood species.

scholarly journals APLIKASI ENZIM DI INDUSTRI PULP DAN KERTAS: I. BIDANG PULP (ENZYME APPLICATION IN PULP AND PAPER INDUSTRY: I. PULP SECTION)

2017 ◽  
Vol 7 (01) ◽  
Author(s):  
Krisna Septiningrum ◽  
Ikhwan Pramuaji
Keyword(s):  
Paper Industry ◽  
White Rot Fungi ◽  
Pulp Mill ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
White Rot ◽  
Economical Aspect ◽  
Hexenuronic Acid ◽  
Enzyme Application ◽  
Enzyme Characteristic

This review introduce about biotechnological application of enzyme in pulp and paper industry. These enzymes can be applied as biological agents in biopulping, biobleaching including Hexenuronic acid (HexA) removal. Degrading enzyme from white rot fungi, xylanase, laccase, lipase and α-glucuronidase are the the most applicable enzyme in the process. Nowadays, enzyme application is still under laboratory scale, only a few is applied further until industrial scale. There are some limitations for further application related with technical aspects such as effectivity of the enzyme during its application comparing with chemical compounds, enzyme availability in the market, enzyme characteristic that appropriate with the process in pulp mill and economical aspect. In the other hand, these technologies also provide some advantages such as reduce energy consumption, reduce or substitute chemicals and more environmental friendly ABSTRAK Kajian ini berisi mengenai aplikasi bioteknologi terutama enzim di industri pulp dan kertas. Enzim ini dapat diaplikasikan pada proses pulping, biobleaching termasuk penghilangan Hexenuronic acid (HexA). Enzim dari jamur pelapuk putih, xilanase, lakase, lipase dan α-glucuronidase merupakan enzim yang penting untuk diaplikasikan pada proses-proses tersebut. Aplikasi enzim saat ini masih dalam skala laboratorium, hanya beberapa diterapkan lebih lanjut sampai skala industri. Beberapa keterbatasan untuk aplikasi lebih lanjut terkait dengan aspek teknis adalah efektivitas enzim yang lebih rendah jika dibandingkan dengan bahan kimia, keterbatasan produk enzim yang ada di pasar khususnya karakteristik enzim yang sesuai untuk industri pulp, dan keterbatasan dari aspek ekonomi. Namun di satu sisi, teknologi ini juga diketahui memiliki beberapa kelebihan seperti dapat mengurangi penggunaan energi, mengurangi atau substitusi bahan kimia, dan lebih ramah lingkungan

scholarly journals The Ghost of Wesley Vale: Environmentalists' Influence on Innovation in Australia's Pulp and Paper Industry

1996 ◽  
Vol 1 (4) ◽  
pp. 379-401 ◽  
Author(s):  
David A. Sonnenfeld
Keyword(s):  
Government Regulation ◽  
Paper Industry ◽  
Pulp Mill ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
State Governments ◽  
Paper Mills ◽  
Elemental Chlorine ◽  
Pulp And Paper Industries ◽  
Archival Work

This paper analyzes how a key conflict in Australia's pulp and paper industry became generalized to other sites through environmental action, government regulation, and industry initiative. From 1987–91, Australians debated construction of a new, world-class, export-oriented pulp mill in Tasmania. Rural residents, fishermen, and environmentalists, allied with the Australian Labor Party, succeeded in scuttling the project. Subsequently, the national government launched a major research program, state governments tightened regulations, and industry reduced elemental chlorine use. Any new mills constructed in Australia today would be among the cleanest in the world. This paper is part of a larger, comparative study of technological innovation in the pulp and paper industries of Australia, Indonesia, Malaysia, and Thailand. The author interviewed industry officials, government regulators, research scientists, and environmentalists; visited pulp and paper mills; attended technical conferences; and conducted archival work in these countries during a 12-month period.

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