In paper analyzed the results of research concerning nitrate and total ni-trogen content in drainage effluents as well as surface water coming from facilities located in Lower Silesia area. Detailed analysis were made for participation of nitrate nitrogen in total nitrogen amount. Drainage effluents were characterized by significant content of total nitrogen: average concentration in research period amounted from 22,4 mg N dm3 to 36,9 mg N dm3. In drainage effluents, derived from different drainage section, relation N-NO3:N didn't show significant differences and was in the range 75-88%, despite the fact that this water differed significantly of total and nitrate nitrogen content. The increase of average concen-tration of total nitrogen in surface water for both research objects was cause by outflowing drainage effluents that were reached in nitrogen compounds. In drain-age water in summer period showed smaller relation N-NO3:N, what should be explain by intensive absorbing this ion by plants in vegetation period. Regardless of the analyzed period, there was found higher proportion of nitrate in water below research object. Only in case of lowland object these differences were significant for significant level p=0,05. The more fluctuation of relation N-NO3 conducive smaller participation of nitrate nitrogen in total ...
The paper presents results of research concerning changes in total phos-phorus concentrations from outflow from following beds of constructed wetland in Paszkow. There was analyzed domestic wastewater which was supplied to the four beds made as constructed wetland. The beds were designed with horizontal subsurface flow in a mixed config-uration (serial - parallel). The evaluation assessed the composition of domestic wastewater supplied to the beds and as well as physico-chemical composition of the outflows. The research was conducted during July 2008 - March 2011. It was found that the average treatment efficiency for total phosphorus was at 40,0 %, with the highest annual treatment effects were observed for bed no.1. The average concentration of total phosphorus in the effluent discharged to the receiver was 4,4 mgPdm-3. Due to requirements to be met by the outflows form wastewater treatment plants for P.E < 2000, the wastewater treatment plant meets the conditions only for values of BOD5 and COD. In the case of the suspension exceeded to the limit values were observed during whole research period.
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