At 13:40 on March 28, 2020, Yichun Luming Mining Co., Ltd. tilted its overflow well No. 4 in the molybdenum tailings reservoir, resulting in an increase in water discharge with tailings sand, which caused some pollution to the water environment.

At 21:27 on March 30, the Press Office of the People's Government of Yichun City held its first press conference in Luming Mining Co., Ltd. At the press conference, Yan Lihai, deputy secretary-general of the Yichun Municipal Government, said that up to now, about 2.53 million cubic meters of sewage with tailings has been leaked. After the sewage has flowed for about 3 kilometers, it has entered the Yijimi River and has not yet entered the Hulan River. The water source of Yiji Mi River is the surface water source of Tieli City. The water withdrawal has been stopped at 21:30 on March 29. Currently, the original second water source and standby water source are used to supply water (both groundwater sources). Suihua City continues to use the original second water source (groundwater source) for water supply, and Qing'an County uses groundwater source, which is not affected.

Experts from the national and provincial emergency management, ecological environment and other departments arrived at the scene in time to discuss and judge and formulate a disposal plan.

The specific measures are as follows:

The first is to establish a command system. Established the Yichun City Emergency Rescue Command, which is headed by the Secretary of the Municipal Party Committee and the Mayor. It has four working groups to quickly formulate plans, refine the division of labor, fully listen to expert opinions, and effectively implement scientific rescue and professional disposal.

The second is to insist on blocking the source and intercepting in sections. A specific disposal plan for "plugging water sources and intercepting heads" has been formulated, and the leaking point of ore sand in No. 4 overflow well is currently being fully plugged. At the same time, in accordance with expert opinions, 10 interception dams were set up before the "leak head" to slow down the underwater leakage rate and concentration of tailings slurry, and the method of flocculant and activated carbon was used to adsorb and flocculate sediments to prevent pollutants Migrate downstream.

The third is to ensure the safety of residents' water supply. Tieli City started the water supply for urban residents in the second and third water source areas, and immediately shut down with the Ijimi River water source area to achieve a seamless connection to ensure the safety and quality of residents' water supply. At the same time, 20 temporary water supply points in Tieli City were immediately started to ensure residents' water demand; supplies were prepared from surrounding counties and districts to ensure adequate supply of barreled water in the market.

The fourth is to closely monitor the water quality of the Yijimi River. Eco-environment experts sent by the state and province are conducting water quality monitoring on Yichun Miming tailings reservoir downstream section, Yijimi River water source section and pollution source tailings reservoir.

Yan Lihai said that the next step is to continue the interception in sections to delay the flow of water and increase sediment deposition. It will be controlled to the maximum extent in the region and resolutely curb environmental pollution to downstream waters. Increase the monitoring density and frequency of the water quality of the Yijimi River, track overflow water, strictly monitor water quality indicators, and strive to minimize the degree of environmental impact.

(CCTV reporter Ren Qiuyu Shao Chong Liu Qi Dong Liang)