Water quality of Hungarian reach of the river Szamos
Water quality of the Szamos between the years 1970-80 was determined by pollution of high contents of organic matter, which may have come partly from communal plants, but mainly from food processing and light industrial - probably paper and cellulose production - plants. Draining off thin manure fro...
Elmentve itt :
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| Dokumentumtípus: | Könyv része |
| Megjelent: |
1999
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| Sorozat: | Tiscia monograph series
The Somes/Szamos river valley : a study of the geography, hydrobiology and ecology of the river system and its environment |
| Kulcsszavak: | Szamos folyó - ökológia, Szamos folyó - vízminőség |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/10167 |
| Tartalmi kivonat: | Water quality of the Szamos between the years 1970-80 was determined by pollution of high contents of organic matter, which may have come partly from communal plants, but mainly from food processing and light industrial - probably paper and cellulose production - plants. Draining off thin manure from animal farms may also have contributed to that. In 1990 a considerable improvement process commenced, definitely at the cost of a decline in industrial production, when major plants stopped operation. Some of the organic pollution is still present, output of point-like sources can be estimated at 25-30 tons/day. Organic pollution of high waters exceeding 3-400 mVsec of streamflow is stable, its cessation cannot be expected because it comes from humus and plant debris under humification washed in the river. Mainly in the second half of the 80s. considerable amounts of ammonia-ammonium pollution was characteristic of the Szamos. Presumably it came from the draining off of thin manure from animal farms, most of which have stopped operation since then, into the recipient. We hope that in a more reasonable agricultural system this kind of pollution will not reoccur. Probably from the plants of heavy industry and the mines of Dés and Nagybánya sewage and mine waters containing a high degree of salt, primarily sodium chloride, were received by the Szamos. As even the developed industrial countries have not been able to tackle this kind of pollution economically so far, with a lowered degree of production its decrease but not its termination can be expected. We believe that our most important problems in the near future will be caused by the eutrophication of the Szamos. We must therefore go to any length to decrease the pollution of phosphorus feeding, generating this process. At our major towns sewage clarification stage III, providing elimination of phosphorus must be implemented, and we must win the countries up the watercourses over to it. too. For that a sensible, balanced conservation policy should be pursued, because we will not achieve anything with impatience and unjustified demands. I would like to thank my colleague József Hamar, for his hints. |
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| Terjedelem/Fizikai jellemzők: | 105-131 |
| ISSN: | 1418-0448 |