Songtao Sanhe Manganese Industry Group Co., Ltd. Environmental management information disclosure in the first half of 2022

Ⅰ. Company Profile

In 2004, Songtao Sanhe Manganese Industry Group Co., Ltd. completed and put into operation a 20,000-ton/year electrolytic metal manganese production line in the first branch. /a The overall upgrading and technical transformation project of electrolytic metal manganese production line (using the production capacity of the original 20000t/a electrolytic metal manganese production line of the first branch and the 30000t/a electrolytic metal manganese production line of the original second branch, eliminating the 20000t/a metal manganese production line of the original first branch, rebuilding and expanding two points The 30,000t/a electrolytic metal manganese production line of the factory, the 50,000t/a electrolytic metal manganese production line was upgraded as a whole to the second branch), and four electrolytic manganese production lines with a single-line capacity of 12,500t/a were formed. The project covers an area of ​​91,943 square meters. The total investment of the project is 213.955 million yuan, and the environmental protection investment is 17.4 million yuan, accounting for 8.13% of the total investment.

Ⅱ. the completion of the procedures

1. The overall upgrading technical transformation project of the 50000t/a electrolytic metal manganese production line was filed by the Bureau of Industry and Commerce of Songtao Miao Autonomous County (Song Industry and Trade Planning [2015] No. 7, August 31, 2015). The environmental impact report of the project has been evaluated by the Environmental Engineering Evaluation Center of Guizhou Province, and has been approved by the Environmental Protection Department of Guizhou Province (Qianhuan Shen [2016] No. 23). The project started construction in October 2015, and was put into trial operation on December 7, 2016. On August 17, 2017, the environmental protection acceptance record for the completion of the construction project was obtained (record number: 520000-2017-114). 

2. The pollutant discharge permit has been obtained (certificate number: 91520628755387186G002P)

3. On April 27, 2022, it passed the third-level audit of cleaner production (Qianhuan Cleaning [2022] No. 16).

Ⅲ. Management of solid waste and hazardous waste

1. In the first half of 2022, the stockpile of manganese slag will be 98,896 tons. The amount of anode slag produced is 1049.13 tons, which is currently sold to relevant ferroalloy factories for raw material utilization.

2. The waste mineral oil and laboratory waste liquid produced in 2021 have been handed over to qualified units for treatment. In the first half of 2022, the storage volume of laboratory waste liquid was 253.27 kg; the storage volume of waste mineral oil was 489.56 kg.

Ⅳ. Operation and management of environmental protection equipment and facilities:

1. The ore yard in the milling workshop is equipped with canopy, dust-proof and spray systems, and the ore is conveyed by conveyor belts. The pulverizing process adopts fully enclosed negative pressure equipment, and the dust generated by the crushing system and the high-pressure roller mill grinding system is treated by two bag dust collectors respectively, and a single-machine dust collector is installed on the top of the silo for dust removal, and the dust collector treatment efficiency reaches 99.5%. above. 

2. There are two sets of dust removal equipment in the chemical pulping system. The dust collected is used for pulping again, and the pulped solution is transported through the pipeline to avoid secondary pollution. The compound leaching process is equipped with 4 sets of acid mist treatment towers. After the treatment reaches the standard, the dust treated by the 15-meter exhaust pipe meets the secondary standard of "Comprehensive Emission Standard of Air Pollutants" [GB16297-1996]. Dust removal, dust collection equipment, and acid mist treatment towers are operating normally.
The compound tank is made to prevent the compound liquid from overflowing the cofferdam, and the cofferdam is not damaged or leaked.

3. The electrolysis workshop uses polymer RPP energy-saving and environmentally friendly electrolytic cells and is set up overhead. The ground is treated with "three cloths and five oils" + anti-corrosion bricks to prevent leakage, without damage and leakage; the workshop is equipped with silent axial flow fans. Provide air displacement ventilation.

4. The filter press workshop selects high-efficiency filter press equipment. The water content of the filter press manganese slag is about 24%. The filter press manganese slag is transported to the slag warehouse by conveyor belt, which meets the requirements of the EIA.

5. All waste water, slag silo leachate and initial rainwater produced in production are reused for production water system and solution system. After the domestic wastewater is collected and treated, it is discharged into the domestic wastewater treatment plant of Songtao Economic Development Zone through the pipe network.

V. Operation of pollution prevention equipment and facilities

1. One sewage treatment station, 620 cubic meters of wastewater treatment pool, 600 cubic meters of capacity pool, 2 filter presses with a filtration volume of 13 cubic meters and supporting equipment. The daily manganese wastewater treatment capacity is about 1800m3. The standard processing capacity is 500m³/day. Equipped with 1 webmaster, 1 deputy webmaster and 12 employees.

2. One set of online monitoring system for slag storage and one set of online monitoring system for pollution sources in the plant area are installed. Guizhou Jinhong Environmental Protection Technology Co., Ltd. is entrusted to carry out operation, maintenance and management, and the operation is normal. The installed video surveillance system is functioning normally.

3. There are 1 rainwater collection tank of 2,500 cubic meters, 1 capacity pool of 2,500 cubic meters, two sets of water pumps, one accident emergency pool of 1,000 m3, two sets of water pumps, and 2 sets of pumps for leachate lifting and reuse ( One for use and one for backup) is running normally, to ensure that the emergency pump materials are transported to the centralized emergency emergency pool and production reuse.

4. The cofferdams of sulfuric acid, nitric acid and ammonia water storage tanks are not damaged or leaked, and the devices such as eye washers and sprays are normal.

5. The leachate collection tank of the slag depot, the emergency collection tank for sulfuric acid, ammonia water and rainwater are in good condition and have no damage. The auxiliary valves, pumps and pipes are normal, and no cracks, drips and leakages have been found.

6. The manganese slag warehouse and its ancillary safety and environmental protection facilities are operating normally. Set up three groundwater quality monitoring wells for normal use.

7. The manganese sand filter system installed in the cooling tower and cooling circulating water is running normally, and there is no cooling water splashing phenomenon during operation. There is no leakage in the cooling circulating water pool.

8. There is one emergency material warehouse, which is managed by special personnel. According to the emergency rescue situation, it is equipped with corresponding emergency materials and emergency vehicles, etc., to ensure the supply of materials in the event of an accident.

Ⅵ. Pollution prevention and environmental emergency prevention and control

1. Set up the safety and environmental protection department of the environmental protection management agency and the sewage treatment station, and establish the environmental protection management system, operating procedures and job responsibilities.

2. Entrust a qualified third-party testing service agency to regularly monitor the company's pollution sources, culvert entry and exit, monitoring well water quality, and river sections on a quarterly basis; and regularly sample and test river sections to ensure effective prevention and control of pollutants. manage. Realize environmental protection, management, rectification and check and fill omissions. The monitoring has been completed in the first and second quarters of the first half of 2022.

3. Dedicated personnel to conduct safety and environmental protection inspections every day, actively carry out the investigation of hidden dangers of emergency management of environmental emergencies and hidden dangers of risk prevention and control measures for environmental emergencies every month, and make good accounting records.

4. Water meters are installed in all departments and workshops involved in water use. Special personnel will unify the water consumption of each workshop on a daily basis, and conduct assessments according to the monthly water assessment plan. There will be rewards for saving and penalties for overuse.

5. Formulate and establish various rules and regulations for the management of slag silo, formulate slag silo operation plan, set up a duty room, and assign full-time slag silo management personnel to strengthen the daily maintenance management and operation record of various equipment in the slag silo.

6. Prepare the environmental emergency plan for the plant area and the slag silo in strict accordance with the requirements. In the first half of 2022, a drill for an environmental accident in the slag silo has been held.

7. During the flood season, special personnel will be arranged to conduct daily safety inspections and on-duty duty in the slag warehouse, hazardous chemicals storage area and production plant area. Report and eliminate dangerous situations in a timely manner, and deal with hidden dangers in a timely manner to ensure the normal operation of the company's production.

Songtao Sanhe Manganese Industry Group Co., Ltd.

August 15, 2022