Public Disclosure of Information on the Prevention and Control of Environmental Pollution by Hazardous Waste

Information Disclosure on the Prevention and Control of Environmental Pollution Caused by Hazardous Waste

1、Oily sludge containing metal cuttings: floating oil, floating scum and sludge (excluding biochemical treatment sludge from wastewater treatment) generated from oil separation, air flotation, sedimentation and other treatment processes in oily wastewater treatment (900-200-08) HW08

2、Waste mineral oil: Waste mineral oil generated from other production, sales and use processes, and waste packaging contaminated with mineral oil (900-249-08) HW08

3、Sludge residue: Waste bath liquid, bath residue and wastewater treatment sludge generated from copper plating using copper and electroplating chemicals (336-062-17) HW17

4、Filtering and adsorbing media: Waste packaging, containers, and filtering/adsorbing media that contain or are contaminated with toxic or infectious hazardous waste (900-041-49) HW49

5、Waste capacitors: Waste circuit boards (including discarded circuit boards with or without components removed), and waste CPUs, graphics cards, sound cards, memory modules, capacitors containing electrolyte, and connectors containing precious metals such as gold, generated during the dismantling of waste circuit boards (900-045-49) HW49

6、Waste filter cartridges: Waste packaging, containers, and filtering/adsorbing media that contain or are contaminated with toxic or infectious hazardous waste (900-041-49) HW49

Hazardous Waste Categories and Hazardous Characteristics

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

HW17: Toxicity (T), Corrosivity (C);

HW49: Toxicity (T), Infectivity (In)

Disposal of Hazardous Waste

The hazardous waste is entrusted to Tianjin Leosis Environmental Protection Technology Co., Ltd. and Tianjin Huaqing Baisheng Energy Co., Ltd. for disposal. All hazardous waste is packaged and labeled in accordance with environmental protection requirements.

As of the end of December 2025, a total of 98.092 tons of waste mineral oil had been generated, all of which has been entrusted for disposal with no remaining quantity. A total of 98.208 tons of sludge had been generated, all of which has been entrusted for disposal with no remaining quantity.