2011 Matosinhos Data Book - Galp Energia

01
02
03
Evolution over recent years in the production of wastewater is
shown by the following graph:
04
The following graph normalises wastewater production by level
of activity:
05
Relationship between effluents produced and average percipitation in the area of the refinery
Liquid effluents (m 3 )
180,000
160,000
140,000
120,000
100,000
80,000
60,000
40,000
20,000
0
126,672
80,560
119,845
06
ENVIRONMENTAL PERFORMANCE 08 09 10 11
jan. feb. mar. apr. may. jun. jul. aug. sep. oct. nov. dec.
Effluent produced Average rainfall
Liquid effluents produced (10 6 m 3 )
2007
2008
2009
2010
2011
1.16
1.42
79,181 80,001
1.73
18%
decrease
2.30
Liquid effluents produced by level of activity (m 3 ton)
2007
2008
2009
2010
2011
0.30
0.37
0.42
Waste hydrocarbons in the wastewater
2007
2008
0.82
2009
0.81
2010
0.84
2011
0.64
Waste hydrocarbons (mg/l)
2.46
1.74
2.10
2.43
2.27
0.47
19%
decrease
2.45
38,855
0.64
3.84
66,300
101,864
76,251
122,607
149,847
117,689
Monitoring wastewater quality
Matosinhos Environmental Permit also defi nes the limit values
for treated wastewater discharges in the WWTP. The graphs
below show the concentration of pollutants discharged into
the aquatic environment, stating the compliance with the
requirements set out in the Environmental Permit.
Firstly, the graph of the pH of discharged wastewater.
Wastewater pH
2007
2008
2009
2010
2011
Range permited by the permit
The following graph shows the performance of the refi nery in
relation to hydrocarbons:
Concentration limit defined by the permit (mg/l) Waste hydrocarbons by level of activity (g/ton)
MATOSINHOS REFINERY / DATA BOOK ON HEALTH, SAFETY AND ENVIRONMENT 2011
300
250
200
150
100
50
0
10
Average rainfall (mm)
7.37
7.33
7.32
7.50
7.40
6 9
37
07