Xem 1-20 trên 263 kết quả Paper industries
  • This paper examines the pollution control policies applied in China’s paper industry during the period of economic reform from 1982 to 1992. The paper industry is the source of ten percent of China’s industrial wastewater emissions and one fourth of its chemical oxygen demand. It is the largest source of rural environmental pollution. The very small size of china’s mills is comparable to that of papermills in many developing countries and this small size itself creates an interesting problem.

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  • Eleven million tonnes of waste are produced yearly by the European pulp and paper industry, of which 70% originates from the production of deinked recycled paper. Wastes are very diverse in composition and consist of rejects, different types of sludges and ashes in mills having on-site incineration treatment. The production of pulp and paper from virgin pulp generates less waste but the waste has similar properties to waste from the production of deinked pulp, although with less inorganics [...].

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  • Contents: Think in paper – The future of paper begins at Voith Paper. News from the Divisions: LEIPA-Schwedt PM 4 – LWC production line of the new generation; Maxau PM 6 – A challenging project and its implementation; Bohui BM 1 – A benchmark in China for the paper industry worldwide; Innovative Trends in Automation. Paper Culture: Deep-frozen, dried – and saved.

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  • There is increasing political and environmental pressure on industry to clean up the water which it uses in many processes, and to re-use this water where possible. This cleaning is done using specially-developed industrial membranes and this book covers the types and design of membranes, how they work and in which industries they are used. Special attention is paid to the textile, food/ beverage, pharmaceutical, oil and pulp and paper industries where such membranes are in regular use.

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  • The organisation of sewers and systems is closely related to the different types of industry and, as a result, a whole array of configurations exist. In all cases, it is essential to avoid unnecessary dilution during treatment.

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  • However, China’s industry is dependent on non-wood fibers (largely agricultural residues) at a 3:1 ratio over wood fiber. This suggests a concentration of many smaller operations. In fact, China’s rapid agricultural growth since 1978 provided fiber for eight-fold growth in the production of smaller papermills between 1984 and 1992 (CTAPI (1993)). The smaller mills have been rapid innovators, but they remain especially environmentally intrusive. They are dependent on pollution control technologies that are not as effective for non-wood fibers.

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  • This paper’s focus is the pulp and paper industry, narrowly defined. The paper does not deal with broader sustainability issues regarding paper production and use, and also does not consider for ‘disruptive’ forms of innovation, such as innovations in the nanotech- nology and biotechnology sectors which are looking for alternatives to wood based pa- per. Prior to addressing the main question of this study, the next section of this paper exam- ines technical and environmental change in the pulp and paper sector in more detail. ...

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  • Berkhout (2005) argues that the source of pressures on each corner of the Innovation Triangle differs. Pressure on abatement tends to come from the environmental authori- ties; pressures on process changes come from competitors and customers; whereas pres- sures on products come from consumers and pressure groups. Moreover, changes in one corner of the Innovation Triangle affect changes in both other corners through dynamic interlinkages (depicted by the arrows in Fig. 2).

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  • The most spectacular changes in the recent decades have been a radical change in bleaching technology, that minimised the use of chlorine and greatly reduced or avoided altogether the emissions of dioxins (Reinstaller, 2005), and the increase in the use of re- cycled paper as an input in the paper production process. Although less spectacular and more gradually, the pulp and paper industry in Europe has also improved its performance in other environmental dimensions (Berkhout, 2005).

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  • Under the reference case scenario, CEF projects that the pulp and paper industry’s energy consumption will continue to be dominated by renewable fuels (primarily biomass) and natural gas, though renewable energy sources will grow at the expense of natural gas, coal, and petroleum as the industry continues to reduce its demand for purchased fuels. Economic energy intensity (energy consumption per dollar value of output) is expected to decrease at the rate of 0.

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  • Tham khảo sách 'does foreign direct investment work for sustainable development? a case study of the brazilian pulp and paper industry', kỹ thuật - công nghệ, hoá học - dầu khí phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Reactive liquid-liquid extraction of inorganic acids with amines and effect of solvating diluents; Liquid extraction of tall oil from wastewaters of paper industry • Supercritical fluid extraction of natural products; Enzymatic reactions in supercritical CO2; Solubilities of liquids and solids in dense CO2 with entrainer • Relation between the morphology and application properties of polymer catalysts and adsorbents • Study of the permeation and pervaporation of volatile organic substance (propan-1-ol, toluene) • Observation of the competitive adsorption on Vycor glass membr...

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  • PDF--to most of the world it stands for that rather tiresome format used for documents downloaded from the web. Slow to load and slower to print, hopelessly unsearchable, and all but impossible to cut and paste from, the Portable Document Format doesn't inspire much affection in the average user. But PDFs done right is another story. Those who know the ins and outs of this format know that it can be much more than electronic paper. Flexible, compact, interactive, and even searchable, PDF is the ideal way to present content across multiple platforms....

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  • This book covers a wide range of topics relating to advanced industrial robotics, sensors and automation technologies. Although being highly technical and complex in nature, the papers presented in this book represent some of the latest cutting edge technologies and advancements in industrial robotics technology.

    pdf350p kimngan_1 05-11-2012 21 8   Download

  • Ever since the Industrial Revolution, industrial activities have been accompanied by a problem: industrial waste. The commensurate increase in industrialization, urbanization and population growth are leading to production of enormous quantities of industrial wastes that may cause degradation in environment and health hazards. On the other hand, the desire for a healthy environment increases, which leads to the need for better ways of waste minimization, pollution prevention and better use of resources in achieving the required industrial and environmental standards....

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  • Pulp and paper is a mature industry. Industrialised paper manufacturing in Europe started in the early 19th century (Berkhout, 2005). It is a capital and resource-intensive industry that contributes to many environmental problems, including global warming, human tox- icity, eco-toxicity, photochemical oxidation, acidification, nutrification, and solid wastes (Blazejczak and Edler, 2000). Paper is made of natural fibres, either from wood or from recycled materials. Figure 1 below presents a schematic representation of the production system.

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  • Though the fraction of energy-related CAP emissions for the wood products sector is larger than the energy-related fraction for pulp and paper, due to the greater energy requirements of the pulp and paper industry, on a ton-basis energy-related CAP emissions are much larger for the pulp and paper sector than they are for wood products sector.

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  • Empirical evidence suggests that movements in international relative prices (such as the real exchange rate) are large and persistent. Nontraded goods, both in the form of ¯nal consumption goods and as an input into the production of ¯- nal tradable goods, are an important aspect behind international relative price movements. In this paper we show that nontraded goods have important impli- cations for exchange rate behavior, even though °uctuations in the relative price of nontraded goods account for a relatively small fraction of real exchange rate movements.

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  • Pollution control policy is fundamental for our analysis. In 1982 the central government imposed a system of levies on air pollutants, on total wastewater, and on the concentrations of three pollutants contained in wastewater: total suspended solids, chemical oxygen demand, and other solids. The first two are characteristic of the paper industry. The levy rates were reassessed in 1989 and increased in 1992. Wang et al. (1996) examined the effect of these charges on the effluents on the general manufacturing sector. They found the expected emission-reducing effect.

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  • This paper describes basic characteristics of major production units from a pulp and paper manufacturing plant, focusing on major aspects of risk exposure experienced during construction and operation. Different types of pulp and paper manufacturing processes are presented with particular consideration of risks pertaining to the production stage and pertaining to new technology. Turbines and gas turbines are not handled in this paper due to the fact that these have been presented in earlier IMIA papers. The last chapter is dedicated to some interesting cases of loss.

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