Description of industrial pollution in Spain

Abstract

Javier García-Pérez , Elena Boldo , Rebeca Ramis , Marina Pollán , Beatriz Pérez-Gómez , Nuria Aragonés  and Gonzalo López-Abente

Cancer and Environmental Epidemiology Area, National Centre for Epidemiology. Carlos III Institute of Health, C/Sinesio Delgado, 6, 28029 Madrid, Spain

  

Background

Toxic substances released into the environment (to both air and water) by many types of industries might be related with the occurrence of some malignant tumours and other diseases. The publication of the EPER (European Pollutant Emission Register) Spanish data allows to investigate the presence of geographical mortality patterns related to industrial pollution. The aim of this paper is to describe industrial air and water pollution in Spain in 2001, broken down by activity group and specific pollutant, and to plot maps depicting emissions of carcinogenic substances.

Methods

All information on industrial pollution discharge in 2001 was drawn from EPER-Spain public records provided by the European Commission server. We described the distribution of the number of industries and amounts discharged for each pollutant, as well as emission by pollutant group and the industrial activities associated with each pollutant. Maps of Spain were drawn up, with UTM coordinates being used to plot pollutant foci, and circles with an area proportional to the emission to depict pollution emission values.

Results

The EPER-Spain contained information on 1,437 industrial installations. The industrial plants that discharge pollutant substances into air and water above the pollutant-specific EPER threshold were mainly situated in the Autonomous Regions of Aragon, Andalusia and Catalonia and in Catalonia, the Basque Country and Andalusia respectively. Pollution released in 2001 into air approached 158 million Mt. Emissions into water were over 8 million Mt.

Conclusion

A few single industrial plants are responsible for the highest percentage of emissions, thus rendering monitoring of their possible health impact on the surrounding population that much simpler. Among European countries Spain is the leading polluter in almost one third of all EPER-registered pollutant substances released into the air and ranks among the top three leading polluters in two-thirds of all such substances. Information obtained through publication of EPER data means that the possible consequences of reported pollutant foci on the health of neighbouring populations can now be studied.

An open access article from BMC Public Health 2007, 7:40, viewed from Biology-Online.org.

Background

Toxic substances, which are released constantly into the environment (to both air and water) by many types of industrial activities, include a long list of products and pollutants that until now have never been quantified in Spain. Evidence as to the health risk posed by residing in the vicinity of such polluting industries is limited, with cancer and congenital malformations being the most widely studied health problems in the international literature [1-6]. The geographic patterns displayed by certain tumour sites in "small-area" mortality studies in Spain [7-9] suggest that there are environmental factors, closely associated with the territory, which may play an important role in tumour aetiology. It has recently been suggested that exposures deriving from the process of industrial and economic development might have some influence on the appearance of haematological tumours in Spain [10].

In January 2000, the European Council gave a favourable opinion on the implementation of a European Pollutant Emission Register (EPER) [11]. Under the terms of this project, all Member States are required to report to the Commission on emissions to air, soil and water from all agricultural or industrial facilities engaging in one or more activities listed in Annex I to Council Directive 96/61/EC. Industrial activities classified in the EPER fall into the following 6 categories: 1) Energy industries; 2) Production and processing of metals; 3) Mineral industry; 4) Chemical industry and chemical installations; 5) Waste management; and 6) Other activities (which include paper and board production, manufacture of fibres or textiles, tanning of hides and skins, slaughterhouses, intensive poultry or pig rearing, installations using organic solvents, and the production of carbon or graphite). The Directive envisages the reporting of 50 pollutant emissions in excess of a given threshold. The information available allows for different types of industrial activities to be identified and, in addition, contains abundant data on emissions of the pollutant substances to air, water or soil, including the amount released annually.

In February 2004, EPER data on Spain (for 2001) were published. This register traces its origin to the Integrated Pollution Prevention and Control (IPPC) Act 16/2002 of 1 July, governing the authorization of activities falling into 11 categories. The EPER includes all IPPC industrial plants that have exceeded the reporting thresholds for one or more of the pollutants included in EU Decision 2000/479/CE. The aim of this paper was to describe industrial air and water pollution in Spain, broken down by activity group and specific pollutant, and to plot maps depicting emissions of carcinogenic substances. Lastly, the situation in Spain as regards emission of pollutant substances to air is compared to that of other European countries. With the aid of EPER information, the relationship between industrial pollution and public health consequences in Europe can thus be studied by analyzing the influence of spatial distribution of emissions on geographic morbidity and mortality patterns.


Methods

All information on industrial pollution discharged in 2001 was drawn from EPER-Spain records. This information is public, and the records are accessible as a relational database, from the European Commission server [12]. In every case where the geographic WGS84-projection coordinates for the pertinent industrial installation could be imported and incorporated into a Geographic Information System (GIS), these are shown against the entry concerned.

The data were obtained and processed to include all the information necessary for analysis purposes, in three data files, namely, emissions to air, direct to water and indirect to water (via sewage treatment plants). Although there are 4,949 installations affected by the IPPC Act in Spain, the EPER-Spain included only 1,437, which released pollutants that have exceeded the reporting thresholds in 2001. Data were not published for the remaining installations (3,512) because they did not exceed the reporting thresholds for the pollutants, and consequently they are not considered in this study.

Pollutants/Substances were classified into the following groups:

1) Environmental themes: methane, carbon monoxide, carbon dioxide, hydrofluorocarbons, nitrous oxide, ammonia, non-methane volatile organic compounds (NMVOC), nitrogen dioxide, perfluorocarbons, sulphur hexafluoride, sulphur dioxide, nitrogen and phosphorus.

2) Metals and compounds: arsenic, cadmium, chromium, copper, mercury, nickel, lead and zinc.

3) Chlorinated organic substances: dichloroethane-1,2, dichloromethane, chloroalkanes, hexachlorobenzene, hexachlorobutadiene, hexachlorocyclohexane, halogenated organic compounds, dioxins and furans, pentachlorophenol, tetrachloroethylene, tetrachloromethane, trichlorobenzenes, trichloroethane-1,1,1, trichloroethylene and trichloromethane.

4) Other organic compounds: benzene, toluene, ethylbenzene, xylenes, brominated diphenylether, organotin-compounds, polycyclic aromatic hydrocarbons (PAH), phenols and total organic carbon.

5) Other compounds: chlorides, chlorine and inorganic compounds, cyanides, fluorides, fluorine and inorganic compounds, hydrogen cyanide and PM10.

Based on this material, we described the distribution of the number of industries and amounts discharged for each pollutant, as well as emission by pollutant group and the industrial activities associated with each pollutant. Maps of Spain were drawn up, with UTM coordinates being used to plot pollutant foci, and circles with an area proportional to the emission to depict pollution emission values. In order to plot the maps, pollutants classified as group-1, -2A and -2B carcinogens by the International Agency for Research on Cancer (IARC) were selected [13]. Lastly, we compared Spain's percentage emissions to those of European Union countries, focusing on air pollutants for which Spain had some type of emission registered.


Results

At the date of study, the EPER-Spain contained information on 1,437 plants or industrial installations. Registry data showed that a total of 1,250 plants released pollutant substances to air, 133 direct to water and 164 indirect to water, and that some of these plants discharged substances into both air and water.

Industrial plants shown by the EPER to discharge pollutant substances into air in Spain, and associated industrial activities

Most of the reported industries were situated in the Autonomous Regions of Aragon, 425 (34%), Andalusia, 208 (17%) and Catalonia, 190 (15%). Industrial activities registering the greatest number of plants were: 'Manure management. Installations devoted to the rearing of poultry and pigs' (723 industries); 'Manufacture of plaster, asphalt, concrete, cement, glass, fibres, bricks, tiles or ceramic products (mineral product industry involving fuel combustion)' (136 industries); and 'Enteric fermentation. Installations devoted to the rearing of poultry and pigs' (75 industries).

Industrial plants shown by the EPER to discharge pollutant substances directly into water in Spain, and associated industrial activities

The industrial plants registered were mainly situated in Catalonia, 26 (20%), the Basque Country, 23 (18%) and Andalusia, 22 (17%). Industrial activities having the highest number of associated plants were: 'Manufacture of paper, pulp and paper products' (25 industries); 'Manufacture of basic organic chemical products' (19 industries); and 'Manufacture of basic inorganic chemical products or fertilizers' (14 industries).

Industrial plants shown by the EPER to discharge pollutant substances indirectly into water (via sewage treatment plants) in Spain, and associated industrial activities

The industrial plants were mostly situated in Catalonia, 50 (31%), the Basque Country, 31 (19%) and Andalusia, 18 (11%). Industrial activities having the highest number of associated plants were: 'Manufacture of food products and beverages (in slaughterhouses, plants for the production of milk and other animal or vegetable raw materials)' (33 industries); 'Surface treatment of metals and plastics (metal industries and metal ore roasting or sintering installations. Installations for the production of ferrous and non-ferrous metals)' (29 industries); and 'Manufacture of basic organic chemical products' (24 industries).

Table 1 lists the individual air pollutants and the industrial activities associated with these.

Table 2 shows pollution released in 2001, with a breakdown in quantitative terms for each of the three pollution groups (emissions to air, direct to water and indirect to water) and by pollutant group. The results refer to total emissions for Spain, highlighting the Autonomous Regions with the highest emissions for the respective pollutant groups and their percentages relative to the overall figure.

Table 3 gives a detailed description of industrial air pollution in Spain in 2001, as reflected by the EPER, with a breakdown by specific pollutant. While the rows show information relating to the pollutants, the columns reflect the statutory reporting thresholds for the respective pollutant emissions, information for Spain as a whole (total emissions, number of plants that release substances, and mean emission per plant) and information on the Autonomous Regions that registered the highest emission values for each of the pollutants (total emissions, number of plants, and mean emission per plant). The thresholds in the first column of pollutants provide a crude idea of the relative toxicity or importance of the substance. Tables 4 and 5 display the same information as Table 3, but with reference to direct and indirect emissions to water respectively.

Insofar as the pollutant groups were concerned, Table 2 shows that air received the most group-1 pollutants (environmental themes), with the high emissions of carbon dioxide, sulphur dioxide, nitrogen dioxide and carbon monoxide being especially noteworthy in terms of mass (Table 3). In contrast to air, water – both directly and indirectly – received more group-5 pollutants (Other compounds) (Table 2), chlorides in particular (Tables 4 and 5).

Figure 1 shows the geographic distribution of the foci or industrial plants for some carcinogenic pollutants. In the case of air pollutants, the IARC has classified arsenic, benzene, cadmium and chromium as carcinogens (group 1), trichloroethylene as a probable carcinogen (group 2A), and dichloromethane as a possible carcinogen (group 2B). In the case of pollutants discharged direct to water, lead and nickel, both of which have been classified as possible carcinogens by the IARC, are shown [13].

Figure 1Geographic distribution of industrial foci, by specific pollutant.

Finally, Figure 2 sets out the percentage emissions recorded by the EPER-Europe of pollutant substances released into the air in the European Union (for 2001). With respect to Spain, note should be taken of the percentage emissions of hexachlorobenzene substances (Spain accounting for 100% of reported emissions), and chromium, nickel and zinc (Spain accounting for around 40% of reported European emissions).

Figure 2 Percentage emissions of pollutant substances released to air in the European Union.


Discussion

EPER provides data on emissions of key pollutants to air and water from major European industrial facilities. The first set of emissions data, published in February 2004, should be used with caution because of several limitations. One of them is the non-registered industrial plants and/or unquantified emissions, due to the fact that industries are still in the phase of adaptation to EPER regulations and the emission reporting will not become compulsory until 2007. Therefore, data were gathered in 2001 from industries participating in EPER in a voluntary way. In view of the EPER's novelty, the completeness or data quality of this register is not well-known, though given the IPPC's regulatory stance with respect to industrial activity, sufficient quality for the proposed description can be reasonably assumed. However, the 'picture' derived from our study could change in part if completeness and accuracy data were improved.

On the other hand, it should be noted that reported emission data can be obtained by monitoring or modelling. There are three possible codes to indicate the emission determination method for the reported emission data:

Code M: is used when the emissions of a facility are derived from direct monitoring results for specific processes at the facility, based on actual measurements of pollutant concentrations for a given discharge route.

Code C: emission data are based on calculations using nationally or internationally agreed estimation methods (like as fuel used, production rate) and emission factors, which are representative for the industrial sectors. Furthermore, this code is used when the emission calculation methods is obtained from published references [14,15].

Code E: emission data are based on non-standardised estimations derived from best assumptions or expert judgement.

In this first approach, analysis of the EPER 2001 pollution data reveals that industrial air pollution is more intense for substances grouped under: "Environmental themes" in Andalusia, Aragon, Asturias, Castile la Mancha, Catalonia and Galicia; "Metals and compounds" in Andalusia, Catalonia and the Basque Country; "Chlorinated organic substances" in Andalusia, Castile & Leon, Catalonia, Madrid Autonomous Region, Extremadura and the Basque Country; "Other organic compounds" in Andalusia; and "Other compounds" in Andalusia, Castile & Leon and the Basque Country.

On the other hand, industrial pollution discharged directly into water proved more intense for substances grouped under: "Environmental themes" in Andalusia and Aragon; "Metals and compounds" in Andalusia, Aragon, Cantabria, Catalonia and the Basque Country; "Chlorinated organic substances" in Andalusia, Cantabria and Catalonia; "Other organic compounds" in Andalusia and Cantabria; and "Other compounds" in Asturias and the Basque Country.

Lastly, industrial pollution discharged indirectly into water (via sewage treatment plants) was more intense for substances grouped under: "Environmental themes" in Andalusia; "Metals and compounds" in Aragon, Cantabria, Galicia and the Basque Country; "Chlorinated organic substances" in Catalonia and Basque Country; "Other organic compounds" in Andalusia, Catalonia and the Basque Country; and "Other compounds" in Andalusia, Catalonia and the Basque Country.

In Spain, a total of 655 towns have at least one EPER registered facility (excluding farms) in their administrative limit. A total of 215 towns have at least one pollutant facility located within two kilometres from their town centroid (centre point of town) with a population estimated at 500,000 inhabitants. These figures have been calculated after a thorough quality control of the facility UTM coordinates provided by EPER.

As it can be observed from the EPER, a few single industrial plants are responsible for the highest percentage of emissions (Tables 3, 4 and 5). Identification of a small number of high emission plants should elicit implementation of adequately designed health studies in their surrounding.

Analysis of the comparative percentage emissions of pollutant substances released to air in the 15 European Union countries shows that Spain features as a polluter in 32 substances. In percentage terms it ranks: as the leading polluter in 10 of these (arsenic, copper, chromium, nitrogen dioxide, hexachlorobenzene, hydrofluorocarbons, nickel, sulphur oxides, PM10 and zinc); as the second-leading polluter in 3 more (ammonia, cadmium and fluorine); and as the third-leading polluter and in a further 7 (non-methane volatile organic compounds, dioxins and furans, polycyclic aromatic hydrofluorocarbons, lead, tetrachloroethylene, trichloroethylene and trichloromethane). According to data released by EPER in 2004, Spain would be the leading polluter in almost one third of all EPER-registered pollutant substances released into the air and ranks among the top three leading polluters in two-thirds of all such substances. It should be noted that this situation can reflect differences in reporting between countries.

With regard to release of substances to air, in which Spain is pre-eminent vis-à-vis the remaining European countries, hexachlorobenzene & a secondary product formed during the manufacture of other chemical substances – has been classified by the IARC as a possible carcinogen to human beings (group 2B) [13]. Its principal health effects stem from ingesting products highly contaminated with this substance [16]. Zinc, whose principal exposure occurs when eating food, drinking water or breathing air polluted with this compound [17], has not been classified by the IARC in terms of carcinogenicity [13], but can nonetheless cause a number of disorders. The IARC has concluded that some nickel compounds are carcinogenic to humans (group 1) and that metallic nickel is possibly carcinogenic to humans (group 2B) [13]. Its most harmful effects are seen when large amounts of compounds of this substance are inhaled [18]. The IARC has decided that chromium compounds (VI) are carcinogenic to humans (group 1) [13] and may increase the risk of contracting lung cancer. The principal health effects follow on from inhaling high levels of this compound [19]. Some studies conducted in Spain have found evidence of risk posed to the population living near industries that release some of these compounds [20-22].

The EPER contains data on the main pollutant emissions to air and water reported by over 10000 medium- and large-sized industrial installations in 17 European countries. Online information searches can be made via the EPER web page, according to type of industrial plant, industrial activity, area, year and pollutant. It is a user-friendly register, from which, not only tables, but also crude data on pollutant emissions and interactive maps can be obtained. This tool enables useful information to be generated in a public health/environmental pollution context, with similar limitations than other registries as, for instance, Toxic Release Inventory (TRI register) in US [23,24]. It should be noted here that the 2001-based data used for this study were in fact published in February 2004, and that in the last two years there may have been corrections by industries to the emission reports submitted for said year. This gives rise to slight discrepancies between the information reported in this paper and that shown on the EPER-Spain web page.

In relation to public health, there has been growing interest in the development of useful statistical methods for detection of patterns of health events linked with pollution sources in recent years. The information obtained through EPER and PRTR would allow to study the consequences of pollutant foci in population health applying focused clustering methods [25,26]. Raised incidence of the health outcomes in the target population living near to the source or directional preference related to a dominant wind direction may provide evidence of such a link [27].

Some authors reported statistically significant associations between lung cancer risk and residential proximity to smelters, complex industrial areas, and other emission sources. There was some evidence that leukaemia and lymphomas occurred in the neighbourhoods that contained industrial sites [1,4,5] The modelling of distance effect to sources of pollution under isotropic or anisotropic assumptions is complex and there are very limited examples in the literature. To date, most pollution source studies concentrate on incidence or mortality of a single disease [26,27].

The EPER is scheduled to be upgraded and replaced by the European Pollutant Release and Transfer Register (PRTR), which will include more comprehensive information on industrial pollution from 91 substances and 65 industrial activities, as well as information on waste management by industrial installations. It will also compile pollutionreports from a range of sources, such as road traffic, aviation, shipping and agriculture. The reports will be annual (rather than triennial as envisaged under the EPER), with the first becoming available in 2007. As from 2009, the PRTR will be accessible by Internet and will have replaced the EPER.


Conclusion

Information obtained through publication of EPER data means that the possible consequences of reported pollutant foci on the health of neighbouring populations can now be studied, by analyzing geographic mortality patterns of different tumours with reference to the industrial emission of pollutants labelled as carcinogens. This will, in turn, make it possible to quantify the effect exerted by proximity of one or more industries on cancer- and all-cause mortality observed in the surrounding towns and villages.

Competing interests

The author(s) declare that they have no competing interests.

Authors' contributions

JGP and GLA conceived the idea and JGP wrote the manuscript. EB contributed to manuscript writing. EB, RR, MP, BPG, NA and GLA revised the manuscript for important intellectual content. All authors contributed to the final version of the manuscript.

Acknowledgements

This study was supported by FIS 040041 and by the Spanish Network for Cooperative Research in Epidemiology and Public Health (RCESP-FIS C03/09).


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Table 01

Description of industrial air pollution, by pollutant and associated industrial activity (2001).

AIR POLLUTANTS
MAIN ASSOCIATED ACTIVITY1
ACTIVITY GROUP

GROUP 1: ENVIRONMENTAL THEMES

Methane
Landfills (solid waste disposal on land). Installations for the disposal of non-hazardous waste (>50 Mt/day) and landfills (>10 Mt/day)
Waste management

Carbon monoxide; Perfluorocarbons
Primary and secondary metal production (ferrous and non-ferrous) or sinter plants (metal industry and metal ore roasting or sintering installations)
Production and processing of metals

Carbon dioxide; Sulphur dioxide; Nitrogen dioxide
Combustion installations >300 MW
Energy industries

Hydrofluorocarbons
Manufacture of basic organic chemicals
Chemical industry and chemical installations

Nitrous oxide
Manufacture of basic inorganic chemicals and fertilizers
Chemical industry and chemical installations

Ammonia
Manure management. Installations for poultry (>40000), pigs (>2000) or sows (>750)
Other activities

Non-methane volatile organic compounds
Petroleum product processing (mineral oil and gas refineries)
Energy industries
     

GROUP 2: METALS AND COMPOUNDS

Arsenic; Cadmium; Nickel
Combustion installations >300 MW
Energy industries

Chromium; Copper; Lead; Zinc
Characteristic processes in the manufacture of metals (ferrous and non-ferrous) and metal product (metal industry and metal ore roasting or sintering installations)
Production and processing of metals

Mercury
Manufacture of basic inorganic chemicals and fertilizers
Chemical industry and chemical installations
     

GROUP 3: CHLORINATED ORGANIC SUBSTANCES

Dichloroethane-1,2; Tetrachloromethane
Manufacture of basic organic chemicals
Chemical industry and chemical installations

Dichloromethane; Trichloromethane
Manufacture of pharmaceutical products (solvent use)
Chemical industry and chemical installations

Hexachlorobenzene; Tetrachloroethylene
Characteristic processes in the manufacture of metals (ferrous and non-ferrous) and metal product (metal industry and metal ore roasting or sintering installations)
Production and processing of metals

Dioxins and furans
Combustion installations >300 MW
Energy industries

Trichloroethylene
Paint application (solvent use). Installations for surface treatment or products using organic solvents (>200 Mt/year)
Other activities
     

GROUP 4: OTHER ORGANIC COMPOUNDS

Benzene; Polycyclic aromatic hydrocarbons
Petroleum product processing (mineral oil and gas refineries)
Energy industries
     

GROUP 5: OTHER COMPOUNDS

Chlorine and inorganic compounds; Fluorine and inorganic compounds; PM10
Combustion installations >300 MW
Energy industries

Hydrogen cyanide
Characteristic processes in the manufacture of metals (ferrous and non-ferrous) and metal product (metal industry and metal ore roasting or sintering installations)
Production and processing of metals

1 Industrial activity that generates the highest emissions for each pollutant.


Table 02

Description of pollution released by industrial plants in Spain (2001), by pollutant group.

AIR POLLUTION

  TOTAL SPAIN
REGION WITH HIGHEST VALUE

  Emission (Mt/year)
Region
Emission (Mt/year)
%

Group 1: Environmental themes
157,585,773
Asturias
24,103,456
(15%)
Group 2: Metals and compounds
1,048
Basque Country
496
(47%)
Group 3: Chlorinated organic substances
240
Basque Country
77
(32%)
Group 4: Other organic compounds
218
Andalusia
109
(50%)
Group 5: Other compounds
47,887
Castile & Leon
11,560
(24%)
         

WATER POLLUTION (DIRECT)

  TOTAL SPAIN
REGION WITH HIGHEST VALUE

  Emission (Mt/year)
Region
Emission (Mt/year)
%

Group 1: Environmental themes
5,790
Andalusia
1,925
(33%)
Group 2: Metals and compounds
167
Cantabria
99
(59%)
Group 3: Chlorinated organic substances
320
Andalusia
101
(31%)
Group 4: Other organic compounds
31,470
Cantabria
11,930
(37%)
Group 5: Other compounds
7,696,422
Basque Country
6,517,962
(85%)
         

WATER POLLUTION (INDIRECT)

  TOTAL SPAIN
REGION WITH HIGHEST VALUE

  Emission (Mt/year)
Region
Emission (Mt/year)
%

Group 1: Environmental themes
8,458
Andalusia
7,257
(86%)
Group 2: Metals and compounds
38
Basque Country
20
(53%)
Group 3: Chlorinated organic substances
87
Basque Country
72
(82%)
Group 4: Other organic compounds
53,348
Andalusia
37,558
(70%)
Group 5: Other compounds
366,784
Andalusia
312,204
(85%)


Table 03

Description of pollution discharged into the air by industrial plants in Spain (2001), by specific pollutant.

POLLUTANTS
TOTAL SPAIN
AUTONOMOUS REGIONS WITH HIGHEST EMISSIONS

SUBSTANCES
THRESHOLD (Mt/year)1
EMISSION (Mt/year)2
PLANTS3
MEAN EMISSION PER PLANT (Mt/year)4
REGION
EMISSION (Mt/year)2
PLANTS3
MEAN EMISSION PER PLANT (Mt/year)4

GROUP 1: ENVIRONMENTAL THEMES

Methane
100
78670
58
1356
Aragon
19048
6
3175
Carbon monoxide
500
243834
56
4354
Asturias
119754
5
23951
Carbon dioxide
100000
155211000
153
1014451
Asturias
23823000
13
1832538
Hydrofluorocarbons
0.1
276
5
55
Catalonia
193
4
48
Nitrous oxide
10
6208
37
168
Castile-La Mancha
1494
6
249
Ammonia
10
24049
815
30
Aragon
10015
399
25
Non-methane volatile organic compounds
100
63781
60
1063
Andalusia
16810
7
2401
Nitrogen dioxide
100
801301
217
3693
Catalonia
394548
33
11956
Perfluorocarbons
0.1
30
4
8
Galicia
18
2
9
Sulphur dioxide
150
1156625
156
7414
Galicia
412414
12
34368
                 

GROUP 2: METALS AND COMPOUNDS

Arsenic
0.02
6
33
0.17
Andalusia
2
8
0.20
Cadmium
0.01
5
46
0.11
Basque Country
1
13
0.10
Chromium
0.10
80
40
2
Basque Country
44
11
4
Copper
0.10
29
28
1
Andalusia
15
6
2
Mercury
0.01
3
34
0.08
Catalonia
0.5
8
0.06
Nickel
0.05
171
96
2
Andalusia
42
18
2
Lead
0.20
100
50
2
Basque Country
53
14
4
Zinc
0.20
655
43
15
Basque Country
368
15
25
                 

GROUP 3: CHLORINATED ORGANIC SUBSTANCES

Dichloroethane-1,2
1
3
1
3
Catalonia
3
1
3
Dichloromethane
1
61
4
15
Madrid Region
29
1
29
Hexachlorobenzene
0.01
0.03
2
0.02
Extremadura
0.02
1
0.02
Dioxins and furans
0.000001
0.0002
11
0.00002
Basque Country
0.0001
2
0.00005
Tetrachloroethylene
2
72
1
72
Basque Country
72
1
72
Tetrachloromethane
0.10
0.50
1
0.50
Catalonia
0.50
1
0.50
Trichloroethylene
2
81
3
27
Castile & Leon
62
1
62
Trichloromethane
0.50
23
2
12
Andalusia
18
1
18
                 

GROUP 4: OTHER ORGANIC COMPOUNDS

Benzene
1
197
20
10
Andalusia
97
5
19
Polyciclic aromatic hydrocarbons
0.05
21
16
1
Andalusia
12
3
4
                 

GROUP 5: OTHER COMPOUNDS

Chlorine and inorganic compounds
10
2217
44
50
Andalusia
1582
13
122
Fluorine and inorganic compounds
5
2091
35
60
Andalusia
1122
15
75
HCN
0.2
4
6
0.6
Basque Country
4
6
0.6
PM10
50
43575
119
366
Castile & Leon
11547
10
1155

1 Established air emission threshold or limit value (in Mt/year) for each pollutant. Should any plant exceed this threshold, it must report the release of the pollutant (voluntarily)

2 Amount of pollutant (in Mt/year) released by industrial plants

3 Number of industrial plants that discharge said pollutant

4 Mean emission = Emission/Plants


Table 04

Description of pollution directly discharged to water by industrial plants in Spain (2001), by specific pollutant.

POLLUTANTS
TOTAL SPAIN
AUTONOMOUS REGIONS WITH HIGHEST EMISSIONS

SUBSTANCES
THRESHOLD (Mt/year)1
EMISSION (Mt/year)2
PLANTS3
MEAN EMISSION PER PLANT (Mt/year)4
REGION
EMISSION (Mt/year)2
PLANTS3
MEAN EMISSION PER PLANT (Mt/year)4

GROUP 1: ENVIRONMENTAL THEMES

Nitrogen
50
5255
18
292
Andalusia
1759
4
440
Phosphorus
5
535
25
21
Aragon
175
3
58
                 

GROUP 2: METALS AND COMPOUNDS

Arsenic
0.005
0.412
11
0.037
Catalonia
0.161
3
0.054
Cadmium
0.005
2
16
0.106
Andalusia
1
8
0.133
Chromium
0.050
7
24
0.293
Catalonia
2
7
0.336
Copper
0.050
9
28
0.309
Basque Country
3
5
0.690
Mercury
0.001
0.281
17
0.017
Cantabria
0.102
2
0.051
Nickel
0.020
9
33
0.275
Aragon
3
2
2
Lead
0.020
3
18
0.187
Andalusia
1
5
0.208
Zinc
0.100
137
37
4
Cantabria
97
6
16
                 

GROUP 3: CHLORINATED ORGANIC SUBSTANCES

Dichloroethane-1,2
0.010
0.332
2
0.166
Catalonia
0.308
1
0.308
Chloroalkanes
0.001
0.186
2
0.093
Cantabria
0.161
1
0.161
Hexachlorobutadiene
0.001
0.001
1
0.001
Catalonia
0.001
1
0.001
Halogenated organic compounds
1
319
16
20
Andalusia
100
3
33
                 

GROUP 4: OTHER ORGANIC COMPOUNDS

Benzene, toluene, ethylbenzene, xylenes
0.200
64
4
16
Cantabria
47
1
47
Polycyclic aromatic hydrocarbons
0.005
7
6
1
Cantabria
5
2
2
Phenols
0.020
24
17
1
Andalusia
17
4
4
Total organic carbon
50
31375
55
570
Cantabria
11878
6
1980
                 

GROUP 5: OTHER COMPOUNDS

Chlorides
2000
7696120
11
699647
Basque Country
6517950
3
2172650
Cyanides
0.050
153
5
31
Asturias
151
1
151
Fluorides
2
149
15
10
Asturias
60
2
30


Table 05

Description of pollution indirectly discharged to water by industrial plants in Spain (2001), by specific pollutant.

POLLUTANTS
TOTAL SPAIN
AUTONOMOUS REGIONS WITH HIGHEST EMISSIONS

SUBSTANCES
THRESHOLD (Mt/year)1
EMISSION (Mt/year)2
PLANTS3
MEAN EMISSION PER PLANT (Mt/year)4
REGION
EMISSION (Mt/year)2
PLANTS3
MEAN EMISSION PER PLANT (Mt/year)4

GROUP 1: ENVIRONMENTAL THEMES

Nitrogen
50
6580
11
598
Andalusia
5673
3
1891
Phosphorus
5
1877
26
72
Andalusia
1584
7
226
                 

GROUP 2: METALS AND COMPOUNDS

Arsenic
0.005
0.162
4
0.041
Galicia
0.130
1
0.130
Cadmium
0.005
0.370
15
0.025
Cantabria
0.150
1
0.150
Chromium
0.050
5
19
0.261
Basque Country
3
5
0.579
Copper
0.050
4
18
0.221
Basque Country
2
6
0.251
Mercury
0.001
0.078
5
0.016
Basque Country
0.047
2
0.023
Nickel
0.020
8
39
0.206
Aragon
3
2
2
Lead
0.020
2
15
0.141
Cantabria
0.882
1
0.882
Zinc
0.100
18
25
0.738
Basque Country
14
8
2
                 

GROUP 3: CHLORINATED ORGANIC SUBSTANCES

Dichloroethane-1,2
0.010
0.023
1
0.023
Catalonia
0.023
1
0.023
Dichloromethane
0.010
0.212
1
0.212
Catalonia
0.212
1
0.212
Chloroalkanes
0.001
0.016
2
0.008
Catalonia
0.016
2
0.008
Halogenated organic compounds
1
87
7
12
Basque Country
72
3
24
                 

GROUP 4: OTHER ORGANIC COMPOUNDS

Benzene, toluene, ethylbenzene, xylenes
0.200
10
3
3
Catalonia
9
2
5
Organotin-compounds
0.050
0.154
1
0.154
Andalusia
0.154
1
0.154
Polycyclic aromatic hydrocarbons
0.005
2
7
0.265
Catalonia
2
3
0.502
Phenols
0.020
4
21
0.184
Basque Country
2
3
0.505
Total organic carbon
50
53332
65
820
Andalusia
37557
11
3414
                 

GROUP 5: OTHER COMPOUNDS

Chlorides
2000
366750
8
45844
Andalusia
312200
2
156100
Cyanides
0.050
4
4
1
Catalonia
4
2
2
Fluorides
2
30
4
7
Basque Country
26
3
9


http://www.biology-online.org/articles/description-industrial-pollution-spain.html