The approach shown at COP3 to the solution of global warming problems was jast symptomatic treatment, by which the substantial solution of a wide range of global environmental issues would not be achieved. Casual treatment is still required for a complete solution. Space solar power generation as a large-capacity clean energy source is very promising in this respect, although there are some problems to be solved for its practical use. The most important one is the high price of electricity, which is mainly influenced by the launch cost for delivering solar power satellites to Earth orbit.
The destruction of the high price structure for launching has already begun with the development of various new SSTO RLV launch systems. The way to solve global environmental issues using macro-engineering diplomacy is discussed super-disciplinarily based on the creation of new industries with advanced technologies, through promoting the Japanese pilot plant project “SPS2000” intending the realization of the first practical space solar power generation system in the world. A “Copernican Change” of industrial economy to include space activities is also deduced.

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[in Japanese]

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The earth can be considered as the open system as for as energy budget, but must be considered as closed system for material balance. Economic activities of human being extract useful elements from nature and also produced waste. This process is regarded as entropy decreasing one for the element but as entropy increasing one for the other systems. Artificial chemical substances can not be decomposed to original substances by the microbiological activities in nature.Reasonable treatment of wastes produced by human activities may be macro-engineering problem in the future.

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What is important for constructing a circulatory type system from now on is how to change to a system that efficiently reduces the environmental load. For this purpose, it is necessary to have a measure from the individual processes to an overall one that deals with the entire system.Therefore, in this paper, using the advanced Japanese paper recycling system as an example of a circulatory type system, it was examined how to efficiently reduce the load on the environment by improving the efficiency of the material flow in the entire system from the viewpoint of the paper 1ifecycle. In addition, an outline of the environmental measures by the CO₂ discharge surcharge and environmental fund system, which are examples of continuous system constructions, were also mentioned.

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Recently, it is difficult to incinerate MSW(Municipal Solid Waste) because of dioxin emission, imposing strong restrictions on the air pollution and incineration scale. The RDF (Refuse Derived Fuel) system is worthy of notice as an alternative disposal. But RDF has not enough demands(ways of use) yet like generation of electric power, thermal supply of DHC (District Heating & Cooling). This paper analyzes the possibility of RDF as an aid fuel of DHC system with two viewpoints of environmental loads and social economic value in total process. Environmental loads are analyzed into LCI(Life Cycle Inventory) concept that is the measure of environmental loads from exploitation of raw material to the final disposal in some system or material. At first, RDF manufacture and Incineration(Energy Recovery) processes are identified with LCI, a more low level emission and efficient energy recovery than an existing system, and then compare DHC system using RDF as an aid fuel with fossil fuel use system. As a result, the total analysis showed that the RDF system is a more low environmental load and high social economic net value than the existing system.

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The Japanese Steel Industry has been modernized by introducing European technology and management in Meiji era and continued to supply industrial materials to the Japanese Industry. Steel Industry uses a large volume of material such as coal, iron ore, metal, oil, bricks, lubricants, and has invested huge amount using self-developed pollution prevention technology. By this efforts, the Japanese Steel Industry has achieved lowering emission of pollutant and succeeded to reuse its by-product as raw materials for other industry. This paper is described above achievements performed by Japanese Steel Industry along with its future strategy for sustainable industrial development.

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Zero-emission society is to be built within the frmaework of "Sustainable Developement";. Important factors forming the framework are democracy, free economy (not controlled-economy) and advanced science and technology. Considera-tions should be given to these improtant factors prior to the the zero-emission society. Actual steps to build the zero-emission society within the framework will be :transfering of waste-management to the private sector from the public sector(privatization) : growing of big-companies in clusters for integrated management of waste (industrialization).

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[in Japanese]

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