The environmental protection information disclosure of Shandong Daye Co., Ltd. in 2022 is as follows:
1、 Wastewater treatment
The two factories in the north and south of the company have sewage treatment systems with a cumulative treatment capacity of 8000m3/day.
The company has installed an online monitoring system for production wastewater and connected it to the monitoring platform in Shandong Province, ensuring that all discharge indicators meet the standards. Details are as follows:
2、 Waste gas treatment
The company's exhaust gas mainly includes sulfur dioxide, nitrogen oxides, and particulate matter generated from the combustion of natural gas; Hydrochloric acid mist and sulfuric acid mist generated during the pickling process; Benzene, toluene, xylene, volatile organic compounds, and particulate matter generated during the painting process.
The company has equipped an acid mist treatment tower at the pickling process site to reduce the emission of acidic waste gas through alkali spraying technology; Equip zeolite wheel concentration+CO catalytic combustion equipment in the painting process to reduce the emission of organic waste gas. At the same time, a large number of dust removal devices are equipped in processes such as wire drawing and sandblasting to ensure the environmental quality inside the workshop.
The company has signed an annual testing contract with Shandong Shengyang Testing Co., Ltd. to conduct timely testing of various factors, and the test results meet the relevant standards.
3、 Hazardous waste management
The company has two hazardous waste warehouses located in the north and south, with a total inventory capacity of 1200 tons. The floor of the hazardous waste warehouse has been hardened and treated with anti-corrosion measures. A waste collection ditch has been set up inside the warehouse, and hazardous waste is stored in different zones. Strict records of incoming and outgoing materials are kept in the ledger, and double person and double lock management is implemented.
During the production process of the company, a total of 17 types of hazardous waste are generated, including 7 types of HW17, 6 types of HW49, 2 types of HW08, 1 type of HW09, and 1 type of HW12. At the end of 2021, there was a surplus of 2.1212 tons, and in 2022, 2737.001 tons were generated. 2554.0022 tons were transferred and disposed of, resulting in a surplus of 185.12 tons. Details are as follows:
The company has signed hazardous waste disposal agreements with multiple qualified companies, including Shandong Zhongkuo Environmental Protection Technology Co., Ltd., Linyi Guojian Environmental Technology Co., Ltd., Shandong Zhongregenerated Environmental Technology Co., Ltd., and Jining Hailuo Entrepreneurship Environmental Technology Co., Ltd., to ensure the timely transfer and disposal of hazardous waste.
