Conversion between different hazardous waste classification systems Oystein Skullerud Statistics Norway

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1 Conversion between different hazardous waste classification systems Oystein Skullerud Statistics Norway Session VI Joint meeting of ETC/WMF and EUROSTAT 6-8 November 2002, Athens

2 Conversion between different hazardous waste classification systems Eurostat grants open for competition Norwegian project proposal The major focus of this project will be to develop conversion tables and a related computerized model for converting between the international hazardous waste classification systems (EWC, OECD, Basel) and Norway s classification system (NS 9431). Statistics Norway has developed comprehensive hazardous waste statistics for Norway based on the national classification system Norwegian Standard 9431, a material-based classification system for both hazardous and non-hazardous waste, see Table 1. This classification system is not in itself compatible with the EWC and Basel systems, which are used for international reporting and comparison. The aim of the project is to develop conversion tables between the following classification systems: NS 9431 EWC (European Waste Catalogue) NS 9431 OECD (Y - List) The proposed project will include the following phases: Phase 1: Acquiring basic data Every time a Norwegian establishment is to get rid of hazardous waste, a declaration form has to be filled in, in which the establishment (generator) is asked to classify its waste according to both the Norwegian system and EWC. Not all generators do this. A lot of them choose either of the two. But there is also a fair share of coupled classifications. These forms are collected and organized in a national database containing (ideally) all hazardous waste deliverances to authorized treatment plants in Norway each year. We will look at every declaration in the Norwegian hazardous waste declaration database for the latest years. From this population of double-classified declarations, we intend to construct a conversion table between NS 9431 and EWC. Exports of hazardous waste directly from the waste generator is not included in the above-described system, but is subject to a separate reporting system, which employs the OECD classification system, the Y-list and EWC. These reportings are compiled in a separate database containing all exports of hazardous waste. This database and the Eurostat work with EWC and Y-list, presented at the subgroup meeting in Luxembourg in December 2000, will serve as basis for the conversion table NS 9431 Y-list. We plan in principle to use similar methodology, but the procedure might be more complicated as the empirical basis is scarcer. On the other hand, the Y-list is a far simpler system than EWC, and the problems with overlapping categories should be limited (more one-to-one fits). This stage will also involve searching for other information sources, first and foremost in the other Nordic countries, which can strengthen the empirical basis of the conversion tables. Phase2: Constructing conversion tables A hypothetical description of the process: Starting with the above-described data set, we examine all declaration of waste oil with repayment (7011) in the declaration database. After having eliminated all obvious misclassifications, we find that 7011 correspond to 10% EWC , 25% , 50% and 15% Then we have the key from NS 9431 to EWC for the Norwegian code We work through all the other categories down to 7250 in a similar manner, using waste quantities in addition to percentages. Since the two systems employ the same hazardous waste definition, the resulting table can be used both ways. Conversion between different hazardous waste classification systems Page 2

3 Phase 3: Developing a computer model An automatic conversion model will then be developed, for example in Excel, on the basis of the conversion tables. The model should allow the user to choose the input and output classification system. The model should then automatically convert hazardous waste statistics classified by the chosen input system to statistics according to the chosen output system. Phase 4: Producing written documentation Written documentation of the model will be produced. The documentation will be written as an instruction book for a similar type of problem, i.e. where there is a national classification system that needs a conversion methodology into an international classification system. ***** The project work is estimated to 550 man-hours, with phase 2 above as the most work-intensive. Table 1 shows the Norwegian hazardous waste codes. The categories correspond to one or more EWC category. Conversely, the EWC categories (Table 2) correspond to one or more of the Norwegian codes. Conversion between different hazardous waste classification systems Page 3

4 Table 1: The Norwegian hazardous waste classification system Waste number Type of waste 7011 Waste oil, with repayment 7012 Waste oil, without repayment 7021 Waste containing oils or fats 7022 Oil contaminated matter 7023 Fuel and fuel oil 7024 Oil filters 7030 Oil emulsions and slop water 7041 Organic solvents, halogenated 7042 Organic solvents non halogenated 7051 Paints, adhesives, varnish. Based on solvents 7052 Paints, adhesives, varnish. Two component 7053 Paints, adhesives, varnish. Based on water 7055 Spray cans 7081 Waste containing mercury 7082 Batteries containing mercury 7083 Waste containing cadmium 7084 Batteries containing cadmium 7085 Amalgam 7086 Flourescent tubes 7091 Inorganic salts and other solid matter 7092 Lead accumulators 7093 Small batteries 7094 Lithium batteries 7095 Metal hydroxide sludges 7096 Slag, dust, fly ash, catalysts, blasting grit, etc Inorganic solutions and baths 7100 Waste containing cyanide 7111 Pesticides containing mercury 7112 Pesticides not containing mercury 7121 Polymerising matter, isocyanates 7122 Highly reactive matter 7123 Hardeners, organic peroxides 7131 Acids, inorganic 7132 Bases, inorganic 7133 Detergents 7134 Acid organic waste 7135 Alkaline organic waste 7141 Drilling mud and drill cuttings based on mineral oil 7151 Organic waste containing halogens 7152 Organic waste not containing halogens 7153 Medicine waste 7165 Contaminated waste water 7210 PCB- and PCT-containing waste 7220 Photochemicals 7230 Halons 7240 Chlorofluorocarbons 7250 Asbestos Conversion between different hazardous waste classification systems Page 4

5 Table 2. EWC Hazardous Waste Codes Code Description agrochemical wastes non-halogenated organic wood preservatives organochlorinated wood preservatives organometallic wood preservatives inorganic wood preservatives degreasing wastes containing solvents without a liquid phase halogenated wastes from dressing and finishing tank bottom sludges acid alkyl sludges oil spills acid tars other tars spent filter clays acid tars other tars sludges containing mercury spent filter clays acid tars other tars aqueous liquid waste from oil regeneration sulphuric acid and sulphurous acid hydrochloric acid hydrofluoric acid phosphoric and phosphorous acid nitric acid and nitrous acid waste not otherwise specified calcium hydroxide soda ammonia wastes not otherwise specified salts and solutions containing cyanides metallic salts (except ) wastes containing arsenic wastes containing mercury wastes containing other heavey metals wastes containing asbestos from electrolysis activated carbon from chlorine production inorganic pesticides, biocides and wood preserving agents Conversion between different hazardous waste classification systems Page 5

6 spent activated carbon (except ) aqueous washing liquids and mother liquors organic halogenated solvents, washing liquids and mother liquors other organic solvents, washing liquids and mother liquors halogenated still bottoms and reaction residues other still bottoms and reaction residues halogenated filter cakes, spent absorbents other filter cakes, spent absorbents aqueous washing liquids and mother liquors organic halogenated solvents, washing liquids and mother liquors other organic solvents, washing liquids and mother liquors halogenated still bottoms and reaction residues other still bottoms and reaction residues halogenated filter cakes, spent absorbents other filter cakes, spent absorbents aqueous washing liquids and mother liquors organic halogenated solvents, washing liquids and mother liquors other organic solvents, washing liquids and mother liquors halogenated still bottoms and reaction residues other still bottoms and reaction residues halogenated filter cakes, spent absorbents other filter cakes, spent absorbents aqueous washing liquids and mother liquors organic halogenated solvents, washing liquids and mother liquors other organic solvents, washing liquids and mother liquors halogenated still bottoms and reaction residues other still bottoms and reaction residues halogenated filter cakes, spent absorbents other filter cakes, spent absorbents aqueous washing liquids and mother liquors organic halogenated solvents, washing liquids and mother liquors other organic solvents, washing liquids and mother liquors halogenated still bottoms and reaction residues other still bottoms and reaction residues halogenated filter cakes, spent absorbents other filter cakes, spent absorbents aqueous washing liquids and mother liquors organic halogenated solvents, washing liquids and mother liquors other organic solvents, washing liquids and mother liquors halogenated still bottoms and reaction residues other still bottoms and reaction residues halogenated filter cakes, spent absorbents other filter cakes, spent absorbents Conversion between different hazardous waste classification systems Page 6

7 aqueous washing liquids and mother liquors organic halogenaged solvents, washing liquids and mother liquors other organic solvents, washing liquids and mother liquors halogenated still bottoms and reaction residues other still bottoms and reaction residues halogenated filter cakes, spent absorbents other filter cakes, spent absorbents waste paints and varnish containing halogenated solvents waste paints and varnish free of halogenated solvents sludges from paint or varnish removal containing halogenated solvents sludges from paint or varnish removal free of halogenated solvents waste ink containing halogenated solvents waste ink free of halogenated solvents ink sludges containing halogenated solvents ink sludges free of halogenated solvents waste adhesives and sealants containing halogenated solvents waste adhesives and sealants free of halogenated solvents adhesives and sealants sludges containing halogenated solvents adhesives and sealants sludges free of halogenated solvents water based developer and activator solutions water based offset plate developer solutions solvent based developer solutions fixer solutions bleach solutions and bleach fixer solutions waste containing silver from on-site treatment of photographic waste oil fly ash sulphuric acid tars and other carbon-containing wastes from anode manufacture skimmings primary smelting slags/white drosses spent pot linings salt slags from secondary smelting black drosses from secondary smelting waste from treatment of salt slags and black drosses treatment slags (first and second smelting) dross and skimmings (first and second smelting) calcium arsenate flue gas dust other particulates and dust solid waste from gas treatment sludges from gas treatment slags (first and second smelting) dross and skimmings (first and second smelting) Conversion between different hazardous waste classification systems Page 7

8 flue gas dust solid waste from gas treatment sludges from gas treatment flue gas dust waste from electrolytic refining solid waste from gas treatment sludges from gas treatment cyanidic (alkaline) wastes containing heavy metals other than chromium cyanidic (alkaline) wastes which do not contain heavy metals cyanide-free wastes containing chromium acidic pickling solutions acids not otherwise specified alkalis not otherwise specified phosphatizing sludges sludges from zinc hydrometallurgy (including jarosite, goethite) wastes containing cyanide other wastes waste machining oils containing halogens (not emulsioned) waste machining oils free of halogens (not emulsioned) waste machining emulsions containing halogens waste machining emulsions free of halogens synthetic machining oils machining sludges spent waxes and fats aqueous washing liquids steam degreasing wastes hydraulic oils, containing PCBs or PCTs other chlorinated hydraulic oils (not emulsions) non chlorinated hydraulic oils (not emulsions) chlorinated emulsions non chlorinated emulsions hydraulic oils containing only mineral oil other hydraulic oils brake fluids chlorinated engine, gear and lubricating oils non-chlorinated engine, gear and lubricating oils other engine, gear and lubricating oils insulating or heat transmission oils and other liquids containing PCBs or PCTs other chlorinated insulating and heat transmission oils and other liquids non-chlorinated insulating and heat transmission oils and other liquids synthetic insulating and heat transmission oils and other liquids mineral insulating and heat transmission oils Conversion between different hazardous waste classification systems Page 8

9 bilge oils from inland navigation bilge oils from jetty sewers bilge oils from other navigation oil/water separator solids oil/water separator sludges interceptor sludges desalter sludges or emulsions other emulsions oil waste not otherwise specified chlorofluorocarbons other halogenated solvents and solvent mixes other solvents and solvent mixes aqueous solvent mixes containing halogens aqueous solvent mixes free of halogens sludges or solid wastes containing halogenated solvents sludges or solid wastes free of halogenated solvents halogenated solvents and solvent mixes solvent mixes or organic liquids free of halogenated solvents sludges or solid wastes containing halogenated solvents sludges or solid wastes containing other solvents chlorofluorocarbons other halogenated solvents solvents and solvent mixes free of halogenated solvents sludges or solid wastes containing halogenated solvents sludges or solid wastes containing other solvents chlorofluorocarbons other halogenated solvents and solvent mixes other solvents and solvent mixes sludges or solid wastes containing halogenated solvents sludges or solid wastes containing other solvents chlorofluorocarbons halogenated solvents and solvent mixes other solvents and solvent mixes sludges containing halogenated solvents sludges containing other solvents transformers and capacitors containing PCB or PCTs waste ammunition fireworks waste other waste explosives lead batteries Ni-Cd batteries mercury dry cells electrolyte from batteries and accumulators Conversion between different hazardous waste classification systems Page 9

10 waste from marine transport tank cleaning, containing chemicals waste from marine transport tank cleaning, containing oil waste from railway and road transport tank cleaning containing oil waste from railway and road transport tank cleaning containing chemicals waste from storage tank cleaning, containing chemicals waste from storage tank cleaning, containing oil insulation materials containing asbestos other wastes whose collection and disposal is subject to special requirements in view of the prevention of infection other wastes whose collection and disposal is subject to special requirements in view of the prevention of infection discarded chemicals fly ash boiler dust filter cake from gas treatment aqueous liquid waste from gas treatment and other aqueous liquid wastes solid waste from gas treatment spent activated carbon from flue gas treatment metal hydroxide sludges and other sludges from metal insolubilisation treatment fly ash and other flue gas treatment wastes non-vitrified solid phase grease and oil mixture from oil/waste water separation saturated or spent ion exchange resins solutions and sludges from regeneration of ion exchangers paint, inks, adhesives and resins solvents photo chemicals pesticides fluorescent tubes and other mercury containing waste Conversion between different hazardous waste classification systems Page 10