Processing of hazardous and non-hazardous waste takes place according to the physico-chemical process of electrocoagulation (operation D9). 40 tons of liquid waste can be treated daily.
Liquid waste passes through rakes into an electrocoagulation basin, where at a high electric current, iron plates release ions, which act as a precipitating agent for undesirable substances. A flotation process separates the sludge from the treated water. Pumps pump the sludge into the sludge storage tank and the water, suitable for discharge, into the sewerage system. A centrifuge mechanically thickens the sludge before leaving the plant to be disposed of as hazardous waste.
Tabel 2:
Waste Classfication – List of Waste (operation D9)
Hazardous and non-hazardous waste (physico-chemical treatment of liquid waste)
| Waste Classification | List of Waste |
| 01 05 04 | freshwater drilling muds and wastes |
| 02 02 01 | sludges from washing and cleaning |
| 02 03 99 | wastes not otherwise specified |
| 02 07 99 | wastes not otherwise specified |
| 03 03 05 | de-inking sludges from paper recycling |
| 07 02 01* | aqueous washing liquids and mother liquors |
| 07 03 01* | aqueous washing liquids and mother liquors |
| 07 04 01* | aqueous washing liquids and mother liquors |
| 07 05 01* | aqueous washing liquids and mother liquors |
| 07 05 04* | other organic solvents, washing liquids and mother liquors |
| 07 05 12 | sludges from on-site effluent treatment other than those mentioned in 07 05 11 |
| 07 06 01* | aqueous washing liquids and mother liquors |
| 07 06 04* | other organic solvents, washing liquids and mother liquors |
| 07 07 01* | aqueous washing liquids and mother liquors |
| 08 01 14 | sludges from paint or varnish other than those mentioned in 08 01 13 |
| 08 01 19* | aqueous suspensions containing paint or varnish containing organic solvents or other hazardous substances |
| 08 01 20 | aqueous suspensions containing paint or varnish other than those mentioned in 08 01 19 |
| 08 02 03 | aqueous suspensions containing ceramic materials |
| 08 03 07 | aqueous sludges containing ink |
| 08 03 08 | aqueous liquid waste containing ink |
| 08 03 16* | waste etching solutions |
| 08 04 15* | aqueous liquid waste containing adhesives or sealants containing organic solvents or other hazardous substances |
| 08 04 16 | aqueous liquid waste containing adhesives or sealants other than those mentioned in 08 04 15 |
| 09 01 01* | water-based developer and activator solutions |
| 09 01 02* | water-based offset plate developer solutions |
| 09 01 03* | solvent-based developer solutions |
| 09 01 04* | fixer solutions |
| 09 01 05* | bleach solutions and bleach fixer solutions |
| 09 01 06* | wastes containing silver from on-site treatment of photographic wastes |
| 10 01 26 | wastes from cooling-water treatment |
| 10 02 11* | wastes from cooling-water treatment containing oil |
| 10 02 12 | wastes from cooling-water treatment other than those mentioned in 10 02 11 |
| 10 03 27* | wastes from cooling-water treatment containing oil |
| 10 03 28 | wastes from cooling-water treatment other than those mentioned in 10 03 27 |
| 10 04 09* | wastes from cooling-water treatment containing oil |
| 10 04 10 | wastes from cooling-water treatment other than those mentioned in 10 04 09 |
| 10 05 08* | wastes from cooling-water treatment containing oil |
| 10 05 09 | wastes from cooling-water treatment other than those mentioned in 10 05 08 |
| 10 06 09* | wastes from cooling-water treatment containing oil |
| 10 06 10 | wastes from cooling-water treatment other than those mentioned in 10 06 09 |
| 10 07 07* | wastes from cooling-water treatment containing oil |
| 10 07 08 | wastes from cooling-water treatment other than those mentioned in 10 07 07 |
| 10 08 19* | wastes from cooling-water treatment containing oil |
| 10 08 20 | wastes from cooling-water treatment other than those mentioned in 10 08 19 |
| 11 01 05* | pickling acids |
| 11 01 06* | acids not otherwise specified |
| 11 01 07* | pickling bases |
| 11 01 11* | aqueous rinsing liquids containing hazardous substances |
| 11 01 12 | aqueous rinsing liquids other than those mentioned in 11 01 11 |
| 11 01 13* | degreasing wastes containing hazardous substances |
| 11 01 14 | degreasing wastes other than those mentioned in 11 01 13 |
| 11 01 15* | eluate and sludges from membrane systems or ion exchange systems containing hazardous substances |
| 12 01 08* | machining emulsions and solutions containing halogens |
| 12 01 09* | machining emulsions and solutions free of halogens |
| 12 03 01* | aqueous washing liquids |
| 12 03 02* | steam degreasing wastes |
| 13 01 04* | chlorinated emulsions |
| 13 01 05* | non-chlorinated emulsions |
| 13 05 02* | sludges from oil/water separators |
| 13 05 03* | interceptor sludges |
| 13 05 07* | oily water from oil/water separators |
| 16 10 01* | aqueous liquid wastes containing hazardous substances |
| 16 10 02 | aqueous liquid wastes other than those mentioned in 16 10 01 |
| 16 10 03* | aqueous concentrates containing hazardous substances |
| 16 10 04 | aqueous concentrates other than those mentioned in 16 10 03 |
| 19 07 03 | landfill leachate other than those mentioned in 19 07 02 |
| 20 03 03 | street-cleaning residues |
| 20 03 99 | municipal wastes not otherwise specified |
