334
E. Neverova-Dziopak
Fig. 14.4 Total number of
wastewater treatment plants
in Poland, 2016 (on the base
of [4])
2408
826
Biological
With increased nutrients removal
31
55.9
74.3
85
85.6
0
10
20
30
40
50
60
70
80
90
2000
2005
2010
2015
2016
Load of nutirents discharged with treated
municipal wastewater in, thous. tonnes per
year
Total Nitrogen
Total Phosphorus
Population number in thousands
Fig. 14.5 Nutrient loads discharged to water receivers with treated municipal wastewaters and the
number of population served by WWTP with EBNR (Enhanced Biological Nutrient Removal) (on
the base of [4])
The percentage share in the total nutrient load discharged into the Baltic Sea by
nine Helsinki Convention signatory countries is shown in Fig. 14.6. According to
the special Report of the European Court of Auditors (2016) [46] and HELCOM
PLC-6 project (2018) [47] Poland continued to be the largest exporter of nitrogen
and phosphorus to the Baltic Sea.
At the same time, it can be noted that the load of nutrients discharged by the
Polish rivers to the Baltic Sea has decreased as a result of the implementation of the
National Program of Municipal Wastewater Treatment (Fig. 14.7).