| Abstract: | In the carpet industry of the investigated area in 1980 there were used 100 t of different chemicals, especially dyes and textile auxiliaries. This quantity is to be increased 2.6 times till 1985. This industry does not have any closed-cycle drainage systems for the dyeing and washing plants. Thus, during eight months of the year the effluents infiltrate in the soil or evaporate from pools. The accumulations of wastewater originating contain up to 60 mg/l chromium, so that 1… 10 mg/l chromium occur in the wells of the area. In the few central water-supply plants till now chromium has not been detected. The annual variation of the groundwater shows pronounced maxima of contamination during July to September, which clearly agree with the maxima of the wastewater concentrations. The possible ecological impacts of this uncontrolled spread of substances contained in water also in the nutrient chain are discussed. |
