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Hazardous Wastes 


Petrochemical processes and pyrolytic operations


1.1    Furnace/reactor residue and debris*

1.2    Tarry residues

1.3    Oily sludge emulsion

1.4    Organic residues

1.5    Residues from alkali wash of fuels

1.6    Still bottoms from distillation process

1.7    Spent catalyst and molecular sieves

1.8    Slop oil from wastewater

1.9  ETP sludge containing hazardous  constituents 


Drilling operation for oil and gas Production

2.1    Drill cuttings containing oil

2.2    Sludge containing oil

2.3     Drilling mud and other drilling wastes* 


Cleaning, emptying and maintenance of petroleum oil storage tanks including ships


3.1    Oil-containing cargo residue, washing water and sludge

3.2    Chemical-containing cargo residue and sludge

3.3    Sludge and filters contaminated with oil

3.4    Ballast water containing oil from ships.


Petroleum refining/re-refining of used oil/recycling of waste oil


4.1    Oily sludge/emulsion

4.2    Spent catalyst

4.3    Slop oil

4.4    Organic residues from process

4.5    Chemical sludge from waste water treatment

4.6    Spent clay containing oil


Industrial operations using mineral/synthetic oil as lubricant in hydraulic systems or other applications

5.1    Used/spent oil

5.2     Wastes/residues containing oil


Secondary production and/or use of Zinc


6.1    Sludge and filter press cake arising out of zinc sulphate production

6.2    Zinc fines/dust/ash/skimmings (dispersible form)

6.3    Other residues from processing of zinc ash/ skimmings

6.4    Flue gas dust and other particulates*


Primary production of zinc/lead/copper and other non-ferrous metals except aluminium


7.1    Flue gas dust from roasting*

7.2    Process residues

7.3    Arsenic-bearing sludge

7.3    Metal bearing sludge and residueincluding jarosite

7.4    Sludge from ETP and scrubbers


Secondary production of copper


8.1    Spent electrolytic solutions

8.2    Sludges and filter cakes

8.3    Flue gas dust and other particulates* 


Secondary production of lead


9.1    Lead slag/Lead bearing residues

9.2    Lead ash/particulate from flue gas


Production and/or use of cadmium and arsenic and their compounds 

10.1 Residues containing cadmium and arsenic


Production of primary and secondary aluminium


11.1 Sludges from gas treatment

11.2 Cathode residues including pot lining wastes

11.3 Tar containing wastes

11.4 Flue gas dust and other particulates*

11.5 Wastes from treatment of salt slags and black drosses* 


Metal surface treatment, such as etching, staining, polishing, galvanising, cleaning, degreasing, plating, etc.


12.1 Acid residues

12.2 Alkali residues

12.3 Spent bath/sludge containing sulphide, cyanide and toxic metals

12.4 Sludge from bath containing organic  solvents

12.5 Phosphate sludge

12.6 Sludge from staining bath

12.7 Copper etching residues

12.8 Plating metal sludge

12.9 Chemical sludge from waste water treatment


Production of iron and steel including other ferrous alloys (electric furnaces; steel rolling and finishing mills; Coke oven and by product plant)


13.1     Process dust *

13.2     Sludge from acid recovery unit

13.3     Benzol acid sludge

13.4     Decanter tank tar sludge

13.5     Tar storage tank residue 



Hardening of steel


14.1     Cyanide -, nitrate-, or nitrite-containing sludge

14.2     Spent hardening salt


Production of asbestos or asbestos -containing materials


15.1     Asbestos-containing residues

15.2     Discarded asbestos

15.3     Dust/particulates from exhaust gas treatment. 


Production of caustic soda and Chlorine


16.1     Mercury bearing sludge

16.2     Residue/sludges and filter cakes*

16.3     Brine sludge containing mercury


Production of acids


17.1     Residues, dusts or filter cakes*

17.2     Spent catalyst* 


Production of nitrogenous and complex fertilizers


18.1     Spent catalyst*

18.2     Spent carbon*

18.3     Sludge/residue containing arsenic

18.4     Chromium sludge from water cooling tower

18.5     Chemical sludge from waste waster treatment


Production of phenol 

19.1     Residue/sludge containing phenol


Production and/or industrial use of solvents


20.1     Contaminated aromatic, aliphatic or napthenic solvents not fit for originally intended use

20.2     Spent solvents

20.3     Distillation residues


Production and/or industrial use of paints, pigments, lacquers, varnishes, plastics and inks

21.1     Wastes and residues

21.2     Fillers residues


Production of plastic raw materials


22.1     Residues of additives used in plastics manufacture like dyestuffs, stabilizers, flame retardants, etc.

22.2     Residues of platicisers

22.3     Residues from vinylchloride monomer production

22.4     Residues from acrylonitrile production

22.5     Non-polymerised residues 


Production and/or industrial use of glues, cements, adhesive and resins 

23.1     Wastes/residues (not made with vegetable or animal materials)*


Production of canvas and textiles


24.1     Textile chemical residues*

24.2     Chemical sludge from waste water treatment 


Industrial production and formulation of wood preservatives 

25.1     Chemical residues

25.2     Residues from wood alkali bath


Production or industrial use of synthetic dyes, dye-intermediates and pigments


26.1     Process waste sludge/residues containing acid or other toxic metals or organic complexes

26.2     Chemical sludge from waste water treatment

26.3     Dust from air filtration system


Production or industrial use of materials made with organo-silicone compounds 

27.1     Silicone -containing residues

27.2     Silicone oil residues


Production/formulation of drugs/pharmaceuticals


28.1     Residues and wastes*

28.2     Spent catalyst / spent carbon

28.2     Off specification products

28.3     Date-expired, discarded and off-specification drugs/ medicines

28.4     Spent mother liquor

28.5     Spent organic solvents 


Production, use and formulation of pesticides including stock-piles


29.1     Wastes/residues containing pesticides

29.2     Chemical sludge from waste water treatment

29.3     Date-expired and off-specification pesticides


Leather tanneries


30.1     Chromium bearing residue and sludge

30.2     Chemical sludge from waste water treatment 


Electronic Industry


31.1     Residues and wastes*

31.2     Spent etching chemicals and solvents 


Pulp & Paper Industry


32.1     Spent chemicals

32.2     Corrosive wastes arising from use of strong acid and bases

32.3     Sludge containing adsorbable organic Halides


Disposal of barrels / containers used for handling of hazardous wastes / chemicals


33.1    Chemical-containing residue from decontamination and  disposal

33.2   Sludge from treatment of waste water arising out of   cleaning / disposal of barrels / containers

33.3   Discarded containers / barrels / liners used for hazardous wastes/chemicals 


Purification processes for air and water


34.1     Flue gas cleaning residue*

34.2     Toxic metal-containing residue from used-ion exchange material in water purification

34.3     Chemical sludge from waste water treatment

34.4     Chemical sludge, oil and grease skimming residues from common industrial effluent treatment plants (CETPs) and industry-specific effluent treatment plants (ETPs)

34.5     Chromium sludge from cooling water treatment


Purification process for organic compounds/solvents


35.1     Filters and filter material which have organic liquids in them, e.g. mineral oil, synthetic oil and organic chlorine compounds

35.2     Spent catalyst*

35.3     Spent carbon* 


Waste treatment processes, e.g. incineration, distillation, separation and concentration techniques


36.1     Sludge from wet scrubbers

36.2     Ash from incineration of hazardous waste, flue gas cleaning residues

36.3     Spent acid from batteries

36.4     Distillation residues from contaminated organic solvents