Ministry of Environmental Protection attacked heavy metal pollution
China Drying Network News Non-ferrous metals are collectively referred to as all metals other than iron, manganese, and chromium. Including heavy metals (such as copper, lead, zinc, etc.), light metals (such as aluminum, magnesium, etc.), precious metals (such as gold, silver, platinum, etc.), rare metals (such as tungsten, molybdenum, tantalum, lithium, antimony, uranium, etc.) . Confronted with the situation that last year's heavy metal pollutant emissions did not fall, the reporter learned that the environmental protection department is entrusting the relevant scientific research institutes to carry out research on the “producing emission factors†of heavy metal polluting enterprises, which will combine existing national main functional divisions and related Industrial policies and environmental protection policies are used to lay down the technical basis for the total control indicators for heavy metals such as mercury, chromium, cadmium, lead, and metalloid arsenic that are discharged into the environment through industrial waste gas; Before the mid-term evaluation of the “12th Five-Year Plan†of comprehensive pollution prevention and control, it will provide assessment basis for it. “The production and emission factor is an important tool to understand the emission of waste gas and waste water containing heavy metal pollutants in China.†Qiao Qi, Director of the Cleaner Production and Recycling Economy Research Center of the Chinese Research Academy of Environmental Sciences, told the “Economic Information Daily†reporter, although it was decided The factors contributing to the production of pollutants in enterprises are complex and diverse. However, for any two companies, as long as they have the same products, the same raw materials, the same production processes, and the same production scale, the levels of pollutants produced by these two companies are roughly the same. Under typical operating conditions, the amount of pollutants produced by a unit of production (using raw materials) is the pollution factor. The sewerage coefficient refers to the amount of pollutants generated by the production unit product (using unit raw materials) under the typical operating conditions under the conditions of production, reduced by the end treatment facilities, or the production unit product (using the unit of raw materials) directly discharged into the environment. The amount of pollutants. When the pollutants are discharged straight, the pollutant discharge coefficient is the same as the pollutant generation coefficient. Qiao Qi explained that according to the first national survey of pollution sources in 2007, there were more than 1.5 million industrial pollution sources in China, and more than 95% of them used production-discharge factors to calculate the status of their production and discharge. At present, there are only more than 30,000 key pollution sources at or above the provincial level. Monitoring data are not available for non-key pollution sources, or monitoring data are incomplete. "The production and emission factor does not accurately represent the production and emission levels of pollutants produced by enterprises. It more reflects the average level of pollutant emissions produced by enterprises under certain conditions. However, at present, there are many industrial enterprises in China, and the monitoring capacity is insufficient. The coefficient is undoubtedly the most simple and convenient tool for the environmental supervision department to conduct pollution investigations,†said Qiao Qi. The implementation plan for the “measurement of heavy metal production and emission factors in key industries†declared by the Environmental Engineering Assessment Center of the Ministry of Environmental Protection has successfully passed the opening statement of the Ministry of Environmental Protection. Recently, various experts have intensively visited several large non-ferrous metals provinces for investigation and calculation. It is reported that the overall goal of the project is to establish the production and discharge coefficient of key heavy metal pollutants in key industries, including waste gas and wastewater production in the four major industries including heavy non-ferrous mining, heavy nonferrous metal smelting, lead storage battery and chemical raw materials and products. Sewage factor. A senior non-ferrous industry expert who participated in the project told the reporter that the project includes heavy metals such as copper, lead, zinc, nickel, tin, antimony, arsenic, etc., but does not include recycled copper and lead regenerated; more attention is paid to industrial wastewater. It is smoke (such as respirable particulate matter) and gaseous matter (only in individual tobacco pipes containing mercury and arsenic) in industrial exhaust gas. "Smoke and gaseous matter can either diffuse rapidly in the atmosphere or they can settle in land and rivers, cause air pollution, water pollution and soil pollution at the same time, and endanger related crops and aquatic organisms," said the expert. Relevant experts told reporters that this will create the first time the emission and emission factors of key heavy metals in the key industries, as well as improve the emission coefficient of key heavy metals in China's key industries, and establish a solid foundation for the calculation of total heavy metal emissions and environmental statistics. The above non-ferrous industry experts told reporters that the initial results of the project, the initial value of the production and emission factor, should be submitted to the Ministry of Environmental Protection at the latest by the end of October. “The time is very tight and the workload is very large.â€
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