tailieunhanh - TECHNICAL GUIDELINES (WATER MANAGEMENT CONCEPT) FOR PAPER MAKERS IN EUROPEAN REGIONS WITH DIFFICULT BOUNDARY CONDITIONS ON HOW TO OPERATE MILLS WITH MINIMUM WATER USE

Apart from country and industry-specific differences, the determinants of our estima- tion results 3 do not show any difference between the two innovation decisions (see Table 4). In short, the determinants of product and process innovations appear to be quite similar. This outcome might be explained by the fact that there is a wide overlap between these two types of innovations, which becomes obvious when taking a closer look at the European Commis- sion’s definition of product-integrated environmental innovations. According to this definition (see EC 2001 and 2003), environmental product innova- tions include process changes “from cradle to grave”, in other words, an improvement. | paperbref Deliverable D16 TECHNICAL GUIDELINES WATER MANAGEMENT CONCEPT FOR PAPER Makers in EUROPEAN REGIONS WiTh difficult boundary conditions ON HOW TO OPERATE MILLS WITH MINIMUM WATER USE Responsible Partner Centre Technique du Papier CTP Project Co-ordinator LUCENSE SCpA Partners Papiertechnische Stiftung PTS Centre Technique du Papier CTP . Srl Project funded by the European Community under the Energy Environment and Sustainable Development Programme 1998-2002 D16 WATER MANAGEMENT CONCEPT Page 2 of 23 Contents 1 2 3 Systematic approach to Water 4 Minimising water Cooling water network 7 Preparation and dilution of chemicals 7 Paper machine showers 7 Sealing waters 7 5 Optimum Water circuit Strict separation of water loops together with counter-current flows 8 Broke system management 8 Optimal water arrangement water clarification and recycling of process water for different purposes. 8 Adequate storage capacity 9 De-inking plant generation of clarified water 9 6 Appropriate effluent Installation of an equalization basin and primary treatment of waste water 11 Secondary treatment 11 Anaerobic treatment as first stage of biological waste water treatment 12 Chemical precipitation of waste water from paper mills 13 7 Integration of advanced water treatment as an option to further reduce process water Introduction 14 Choice of technology 14 Elimination of organic compound 15 Elimination of inorganic compounds 15 8 9 Overview 18 Scientific background and investigations 18 D16 WATER MANAGEMENT CONCEPT Page 3 of 23 1 SUMMARY One important outcome of the EU-funded Project PAPERBREF1 is the water management concept about how to operate mills with minimum water use in European regions with difficult boundary conditions. This concept is based upon studies performed in 30 .