Vízügyi Közlemények, 1964 (46. évfolyam)

4. füzet - IV. Perényi Károly: Héjcsatornák az öntözésben

(9) per cent, respectively. 11 per cent of all fresh water are actually consumed in the industry. The remaining part is returned into the recipients. 80 per cent of this water is warm cooling water free from harmful pollution. Industrial water supply is in general characterized by surface diversion. The Water consumption of water-cooled thermal power stations represents the greatest share and is expected to increase further. From the 24 million cu.m/day industrial freshwater consumption anticipated for 1980 the share of the power generating industry is 82 per cent, while remaining 4,3 million cu.m daily water demand is divided among all the other branches of industry. The industrial water consumption utilized by recirculation is now round 4,2 million cu.m/day, or about 34 per cent of the total industrial water consumption (Fig. 5 ). The water handling plants of the industry are organic parts of the production process. They represent a considerable share of the total investment, thus in metallurgy 19,2 in the paper industry 8,4 while in the power industry 7,8 per cent of the first costs of the projects. The two largest centers of heavy industry in Hungary, the Borsod Industrial Center and Budapest are responsible for two-thirds of the total industrial water consumption. In selecting the site for industries with a heavy water demand special - care should be devoted to considering the possibilités of water supply. These aspects have frequently been neglected in the past in settling industry. One of the fundamental principles governing the efforts for improving the industrial pattern of the country is that the relatively underdeveloped regions must be industrialized to the greatest possible extent, special attention being devoted in this respect to the Great Plains. Sites for industries with a heavy water demand should be allocated primarily along the Danube and Dráva Hivers. V. Settlement water policy. By 1980 urban population will increase by 2 million and at the same time the ratio of those occupied in the agriculture will decrease from 36 to 16 per cent. The favourable trend in the development of the settlement network creates simultaneously the prerequisites for the economical creation of public utilities as well. The general prerequisite for development, dwelling construction, industry siting, accomodation of public institutions is the construction of the water handling plants of the settlement, i. e. water supply and sewage removal must be provided together with any other development. VI. Economic, regional planning and water resources development. 13 resources management districts have been assigned as the basic units for preparing the overall water resources development plan (Fig. 6). It should be noted that the boundaries of six of the districts of national economic planning coincide with minor deviations with the boundaries of the catchment areas. The effect of water resources on the area distribution of production facilities should not be evaluated by the "economic significance" of water only, i. е., by the amount of social effort required for the extraction of water, but in the case of alternative uses the greatest benefit in production should also be taken into consideration. In conclusion it is implied that the successful realization of the large-scale program is impossible unless material-technical prerequisites are satisfied. Hereafter all the prerequisites are listed which must be met in the line of organization, material, machinery and instrument supply, etc. for the above development of water resources in Hungary. No detailed analysis of the involved problems associated with the relationship s between regional resources management, plants of domestic and industrial supply could be given here. The primary aim of this paper was to contribute to the development of a uniform approach to these interrelations, in which predominance is attributed to the resources conditions in the area units and to the development objects of the Settlement and industrial network, due allowance being given to the internal water policy of industrial plants.