Introduction
Materials and methods
1995 | 2000 | 2005 | 2011 | 2014 | 2015 | 2016 | |
---|---|---|---|---|---|---|---|
Inhabitants connected to MWWTPs | |||||||
Urban areas | 15,554,500 | 18,928,100 | 19,955,400 | 20,670,900 | 21,791,600 | 21,906,300 | 21,932,900 |
Inhabitants share | 65.7% | 80.0% | 85.2% | 88.4% | 94.0% | 94.6% | 94.8% |
Rural areas | 450,300 | 1,576,400 | 3,005,500 | 4,631,100 | 5,702,000 | 6,049,400 | 6,312,900 |
Inhabitants share | 3.1% | 10.8% | 20.4% | 30.6% | 37.4% | 40.0% | 41.3% |
Mechanical and mechanical-chemical MWWTPs | |||||||
Urban areas | 2,947,200 | 1,271,800 | 750,000 | 17,700 | 9000 | 9000 | 8900 |
Biological and mechanical-biological MWWTPs | |||||||
Urban areas | 11,073,400 | 10,290,500 | 6,115,000 | 2,623,000 | 2,295,100 | 2,195,300 | 2,127,400 |
Enhanced biological nutrient removal (EBNR) MWWTPs | |||||||
Urban areas | 1,110,200 | 7,329,000 | 13,090,400 | 18,030,200 | 19,487,400 | 19,701,800 | 19,796,600 |
Results
Polish contribution to the Baltic Sea nutrient pollution
Bioavailability aspect of the discharged nutrient loads
Year | TN load | Share of DIN in TN | Average | TP load | Share of DIP in TP | Average | Riverine average flow (m3/s) |
---|---|---|---|---|---|---|---|
1995 | 204,674 | 66% | Average TN load before the NMWTP implementation = 207,444 Mg Average share of DIN in TN before the NMWTP implementation = 64% | 13,208 | 48% | Average TP load before the NMWTP implementation = 12,797 Mg Average share of DIP in TP before the NMWTP implementation = 46% | 1744 |
1996 | 250,876 | 53% | 12,389 | 51% | 1888 | ||
1997 | 206,720 | 56% | 15,580 | 54% | 2062 | ||
1998 | 260,470 | 68% | 15,646 | 54% | 2257 | ||
1999 | 206,840 | 69% | 13,880 | 45% | 2193 | ||
2000 | 182,325 | 72% | 11,821 | 44% | 1978 | ||
2001 | 191,242 | 70% | 12,746 | 44% | 2062 | ||
2002 | 237,359 | 70% | 12,094 | 35% | 2146 | ||
2003 | 126,487 | 53% | 7805 | 40% | 1357 | ||
2004 | 144,082 | 62% | Average TN load after the NMWTP implementation = 148 607 Mg Average share of DIN in TN after the NMWTP implementation = 64% | 9016 | 32% | Average TP load after the NMWTP implementation = 8 783 Mg Average share of DIP in TP after the NMWTP implementation = 35% | 1395 |
2005 | 133,615 | 64% | 8181 | 39% | 1492 | ||
2006 | 144,074 | 68% | 9587 | 34% | 1550 | ||
2007 | 163,621 | 69% | 9087 | 37% | 1645 | ||
2008 | 133,182 | 62% | 7443 | 33% | 1422 | ||
2009 | 147,831 | 62% | 9718 | 28% | 1635 | ||
2010 | 259,190 | 66% | 14,244 | 40% | 2744 | ||
2011 | 191,838 | 63% | 10,443 | 36% | 1995 | ||
2012 | 103,368 | 54% | 6645 | 36% | 1407 | ||
2013 | 168,660 | 63% | 10,446 | 33% | 1752 | ||
2014 | 112,767 | 59% | 10,761 | 33% | 1084 | ||
2015 | 75,908 | 65% | 4785 | 34% | 1109 | ||
2016 | 113,142 | 68% | 5773 | 37% | 1271 | ||
2017 | 189,219 | 70% | 6838 | 41% | No data |
Identification of main sources of nutrient loads introduced to the Baltic Sea from Polish territory
Municipal wastewater nutrients input
Polish coastal zone eutrophication
Eutrophication mitigation effects evidence and trends
Year | Gdansk Basin | Bornholm Basin | Eastern Gotland Basin | |||
---|---|---|---|---|---|---|
TN [mmol/m3] | DIN [mmol/m3] | TN [mmol/m3] | DIN [mmol/m3] | TN [mmol/m3] | DIN [mmol/m3] | |
2007 | 22.50 | 6.60 | 23.50 | 7.60 | 19.20 | 4.00 |
2008 | 24.50 | 6.00 | 23.80 | 2.90 | 20.80 | 2.50 |
2009 | 25.50 | 4.60 | 25.20 | 5.00 | 24.10 | 3.40 |
2010 | 29.00 | 9.30 | 29.20 | 6.90 | 24.00 | 4.60 |
2011 | 26.90 | 7.80 | 27.90 | 6.60 | 23.80 | 9.80 |
2012 | 22.40 | 2.60 | 22.50 | 6.10 | 21.90 | 3.20 |
2013 | 30.70 | 5.20 | 29.60 | 5.80 | 24.30 | 2.70 |
2014 | 28.20 | 4.10 | 25.50 | 4.80 | 25.80 | 4.30 |
2015 | 27.90 | 5.90 | 27.50 | 5.60 | 25.10 | 4.60 |
2016 | 29.10 | 5.70 | 25.10 | 3.20 | 24.80 | 2.90 |
2017 | 28.70 | 9.50 | 28.20 | 9.30 | 27.70 | 4.90 |
Year | Gdansk Basin | Bornholm Basin | Eastern Gotland Basin | |||
---|---|---|---|---|---|---|
TN [mmol/m3] | DIN [mmol/m3] | TN [mmol/m3] | DIN [mmol/m3] | TN [mmol/m3] | DIN [mmol/m3] | |
2007 | 0.70 | 0.61 | 0.75 | 0.72 | 0.66 | 0.58 |
2008 | 0.72 | 0.59 | 0.74 | 0.56 | 0.70 | 0.50 |
2009 | 0.82 | 0.52 | 0.92 | 0.55 | 0.70 | 0.56 |
2010 | 0.98 | 0.76 | 0.90 | 0.63 | 0.85 | 0.68 |
2011 | 0.99 | 0.46 | 0.88 | 0.33 | 0.95 | 0.39 |
2012 | 0.88 | 0.38 | 0.96 | 0.43 | 0.90 | 0.33 |
2013 | 0.82 | 0.28 | 0.81 | 0.32 | 0.67 | 0.34 |
2014 | 0.72 | 0.43 | 0.80 | 0.37 | 0.88 | 0.45 |
2015 | 0.78 | 0.70 | 0.85 | 0.61 | 0.88 | 0.70 |
2016 | 0.68 | 0.82 | 0.66 | 0.79 | 0.59 | 0.72 |
2017 | 1.43 | 0.70 | 1.47 | 0.73 | 1.28 | 0.68 |