Hazardous waste pollution prevention and control of environmental information publicity

　　Hazardous waste generation links and main waste types

1. Phosphating waste residue:Metal or plastic surface acid (alkali) washing, degreasing, rust removal, washing, phosphating, light extraction, waste corrosion liquid, waste washing liquid, waste tank slag and waste water treatment sludge produced by chemical polishing process (excluding: aluminum, magnesium (board) surface acid (alkali) washing, roughening, sulfuric acid anode treatment, phosphoric acid chemical polishing wastewater treatment sludge, aluminum electrode foil for aluminum electrolytic capacitor is chemically corroded and non-boric acid system is liquefied into wastewater treatment sludge, aluminum extrusion processing mold alkali washing (pot mold) wastewater treatment sludge, carbon steel pickling and derusting wastewater treatment sludge)(336-064-17)HW17

2. Chemical oxidation waste residue:Metal or plastic surface acid (alkali) washing, degreasing, rust removal, washing, phosphating, light extraction, waste corrosion liquid, waste washing liquid, waste tank slag and waste water treatment sludge produced by chemical polishing process (excluding: aluminum, magnesium (board) surface acid (alkali) washing, roughening, sulfuric acid anode treatment, phosphoric acid chemical polishing wastewater treatment sludge, aluminum electrode foil for aluminum electrolytic capacitor is chemically corroded and non-boric acid system is liquefied into wastewater treatment sludge, aluminum extrusion processing mold alkali washing (pot mold) wastewater treatment sludge, carbon steel pickling and derusting wastewater treatment sludge)(336-064-17)HW17

3. Oil sludge containing metal chips:Oil slick, scum and sludge (excluding sludge from biochemical treatment of wastewater) produced in the process of oil separation, air flotation and sedimentation in the treatment of oily wastewater (900-200-08)HW08

4. Acid and alkali waste residue:Metal or plastic surface acid (alkali) washing, degreasing, rust removal, washing, phosphating, light extraction, waste corrosion liquid, waste washing liquid, waste tank slag and waste water treatment sludge produced by chemical polishing process (excluding: aluminum, magnesium (board) surface acid (alkali) washing, roughening, sulfuric acid anode treatment, phosphoric acid chemical polishing wastewater treatment sludge, aluminum electrode foil for aluminum electrolytic capacitor is chemically corroded and non-boric acid system is liquefied into wastewater treatment sludge, aluminum extrusion processing mold alkali washing (pot mold) wastewater treatment sludge, carbon steel pickling and derusting wastewater treatment sludge)(336-064-17)HW17

5. Waste mineral oil:Other waste mineral oil produced during production, sale and use and waste packaging contaminated with mineral oil (900-249-08)HW08

6. Filter adsorption medium:Waste packaging, containers, filter adsorption media (900-041-49) containing or contaminated with toxic and infectious hazardous wastes HW49

7. Medium-temperature salt residue:Metal or plastic surface acid (alkali) washing, degreasing, rust removal, washing, phosphating, light extraction, waste corrosion liquid, waste washing liquid, waste tank slag and waste water treatment sludge produced by chemical polishing process (excluding: aluminum, magnesium (board) surface acid (alkali) washing, roughening, sulfuric acid anode treatment, phosphoric acid chemical polishing wastewater treatment sludge, aluminum electrode foil for aluminum electrolytic capacitor is chemically corroded and non-boric acid system is liquefied into wastewater treatment sludge, aluminum extrusion processing mold alkali washing (pot mold) wastewater treatment sludge, carbon steel pickling and derusting wastewater treatment sludge)(336-064-17)HW17

8. Waste filter element:Waste packaging, containers, filter adsorption media (900-041-49) containing or contaminated with toxic and infectious hazardous wastes HW49

Categories and Hazardous Characteristics of Hazardous Wastes

HW08: Toxicity (T), Flammability (I);

HW17: Toxic (T), Corrosive (C);

HW49: Toxic (T), Infectious (In)

whereabouts of hazardous waste

Tianjin Leiosisi Environmental Protection Technology Co., Ltd. and Tianjin Huaqing Yum Energy Co., Ltd. are entrusted for disposal. All hazardous wastes are packaged and labeled according to environmental protection requirements.

As of the end of August 2024, a total of 25.846 tons of waste mineral oil have been produced, all of which have been commissioned for disposal, with no surplus; 27.74 tons of sludge have been commissioned for disposal, with no surplus.