Hidrológiai Közlöny 1977 (57. évfolyam)

1. szám - Mátrai István: A magyar vízügyi nagylétesítmények és a Vízminőségszabályozási Mintaterületek Project

Mátrai István: A magyar vízügyi nagylétesítmények Hidrológiai Közlöny 1977. 1. sz. 19 ment of agriculture and industry. This applies especially to the non-point pollutions, which will receive increased attention in subsequent investigations. The importance of water quality control in the Upper-Danube pilot zone is underlined, besides the international significance of the Danube, by domestic- and industrial water supply to the capital Budapest, of 2 million inhabitants. The multi-purpose development of the 2413 km long Danube, the nearing completion of the RhineMain-Danube Canal has raised the desirability of the complex development of the common Hungarian

—Czechoslovakia]! Danube section by means of the Gabcikovo

—Nagymaros barrage project. At the upstream end of the section, in the vicinity of Dunakiliti, a weir is contemplated to divert the flow into a 24 km long navigable power canal on the left-hand bank, dimensioned for a discharge of 4000 cu

. m/sec. The reservoir upstream of the weir will supply daily up to 52 million cu . m of water for generating peak energy at the 700 MW hydroelectric station to be built at the end of the power canal. Daily peak load operation is liable to cause violent stage fluctuations downstream of the Gabcikovo power station. The Nagymaros barrage will control the regime of the river over the section between Gabcikovo and Nagymaros. Under the impact of the weirs, the impoundment reservoirs and the power canal, the hvdrological and consequently the water quality conditions in the Danube are likely to change considerably. The UNDP contribution to the UNDP/WHO Project is detailed in other papers published in this journal. The main results of the works accomplished by the contribution of Hungary will be summarized below. The contributions by Hungary consisted mostly of the work by the Hungarian agencies participating in the planning and research work. Under the scientific guidance of the Research Institute for Water Resources Development (VITUKI), the agencies which have participated in the work related to the 5 major domains investigated under the Project included besides VITUKI, the Water Resources Center (VIKÖZ), the Water Management and Computer Center (VSZSZI), the district water authorities involved with headquarters at Miskolc, Győr and Budapest, the Charles Marx University of Economics, the National Public Health Institute (OKI), the Danube Research Station of the Hungarian Academy of Sciences and the Automation Works of the Factory of Instruments for Measurement Techniques (MMG). The activities of these agencies were regulated by the contracts signed by the above agencies with the Project Bureau. The first task consisted of the establishment of the data base needed for the realization of the program. Beyond the economic- and technical surveys in the two areas, field measurements, assimilation studies were conducted and several waste water treatment technologies examined. A method has been developed for storing and processing the basic data and detailed economic studies have been performed towards the formulation of the technico-economic model. For the proper utilization of the advanced instrumentation received under the Project the required laboratory facilities have been constructed. Other important construction jobs involved the monitoring stations, of which two are situated on the Danube and three along the Sajó River. Construction work on these monitoring stations was started in the Sajó Valley, where in addition to the two permanent stations at Sajópüspöki and Alsózsolca a third, mobile station has been installed in a van. The Stations on the Danube are situated at Rajka, in the boundary cross-section, and at Szob, downstream of the mouth of the Ipolv River (Fig. 4.). The monitoring stations were built by the competent district water authorities according to the directives elaborated at VITUKI. The instruments installed at the monitoring stations have been manufactured in Hungary by the Automation Works, MMG (Fig. 5). The data observed at the stations are recorded continuously. The observation data are relayed bv TELEXDAT-TM equipment developed' at VITUKI through the international, remote dialling teletype network. Fig. 4. Monitoring station DVR-2 al Szob 4. ábra. A DVR-2 szobi monitorállomás