Seven technical specifications for non-ferrous metal smelting pollution discharge licenses released

On December 27, 2017, the Ministry of Environmental Protection issued the 'Technical Specification for Pollution Discharge Permit Application and Issuance of Nonferrous Metals Industry - Mercury Smelting' and 'Technical Specification for Pollution Discharge Permit Application and Issuance Nonferrous Metals Industry - Magnesium Smelting' in the form of National Environmental Protection Standards (HJ). 'Technical Specifications for Pollution Discharge Permit Application and Issuance Non-ferrous Metals Industry-Nickel Smelting', 'Technical Specifications for Pollution Permit Application and Issuance Non-ferrous Metals Industry-Titanium Smelting', 'Technical Specifications for Pollution Permit Application and Issuance Non-ferrous Metals Industry-Tin Smelting' ' Seven technical specifications, including Technical Specifications for Pollution Discharge Permit Application and Issuance of Nonferrous Metals Industry - Cobalt Smelting and 'Technical Specifications for Pollution Discharge Permit Application and Issuance of Nonferrous Metals Industry - Antimony Smelting', will take effect immediately after issuance, and enterprises in related industries can start according to the specifications. Apply for a discharge permit. Seven Nonferrous Metal Smelting Pollutant Discharge Permit Technical Specifications 1 Discharge Outlet Division Because the non-ferrous metal smelting industry has many production processes and many sources of pollution, the management of the discharge outlets of pollutant discharge units in the non-ferrous metal smelting industry at this stage should focus on the key points. In order to improve the efficiency of pollution source management and control of enterprises in the non-ferrous smelting industry, improve the efficiency of emission permit application and issuance, and reduce the workload of accounting, the discharge outlets are divided into main discharge outlets and general discharge outlets. There are two categories for classified management. The principle for determining the main discharge outlets is that the pollutant discharge volume is large, the pollutant discharge type is various, the installation of online monitoring facilities is convenient for assessment, and the 5+X pollutants (5 types are sulfur dioxide, nitrogen oxides, particulate matter, chemical oxygen demand, ammonia nitrogen; X species are total lead, total arsenic, total mercury, total cadmium, and fluoride. The pollutant discharge outlets whose discharge accounts for a large amount of the company's total discharge are set as the main discharge outlets, and the allowable discharge concentration and allowable discharge are controlled and controlled; the rest of the pollutants The discharge port is set as a general discharge port and only controls the allowable discharge concentration. The main waste water discharge outlets are the total discharge outlets of industrial waste water and the discharge outlets of workshops or production facilities. 2 Permitted discharge and actual discharge“Twelve Five”According to the requirements of relevant management documents such as the “Plan”, “Ten Articles of Atmosphere”, “Ten Articles of Soil” and “Ten Articles of Water”, the pollution factors of the permissible emissions of the non-ferrous metal industry are screened out. The pollutant emission factors of the exhaust gas permit are particulate matter, sulfur dioxide, nitrogen oxides (only applicable to pollutant discharge units in areas with special emission limits), lead and its compounds, arsenic and its compounds, mercury and its compounds, and cadmium and its compounds. The pollution factors of permitted discharge of wastewater are chemical oxygen demand, ammonia nitrogen, total lead, total arsenic, total mercury, and total cadmium. Where there are local requirements for environmental quality improvement, the scope of pollution factors for permitted emissions from the non-ferrous industry may be expanded according to demand. For the discharge outlets of workshops or production facilities, total lead, total arsenic, total mercury, and total cadmium must be permitted in both the total amount and the permitted concentration, while other types of heavy metals are only permitted in concentration. Permissible emissions include annual permissible emissions per unit of pollutant discharge, annual permissible emissions from major discharge outlets, and permissible emissions during special periods. Among them, the effective period of annual permitted emissions shall be counted from the time of issuance of the permit, rolling 12 months. The accounting method is as follows: The seven non-ferrous metal smelting pollutant discharge permit technical specifications are released. The actual emission accounting method mainly distinguishes between normal and abnormal situations, as shown in the following figure: Seven non-ferrous metal smelting pollutant discharge permit technical specifications are released 3 Unorganized emission management requirements are new The issued 'Tin, Antimony, Mercury Industrial Pollutant Discharge Standard' (GB30770) has become the most stringent standard for the heavy non-ferrous industry, and many standards are close to or stricter than those of foreign countries. Judging from the development trend, unorganized management and control should become the focus of emission reduction in the next stage of the industry. This technical specification focuses on proposing regulatory measures for unorganized emissions in the non-ferrous industry. Through the improvement of equipment airtightness and environmental smoke collection, the technical specification proposes to focus on on-site inspection of measures, supplemented by on-site monitoring to determine the unorganized compliance of enterprises. , combined with the standards, norms and the actual situation of the enterprise, the control of fugitive emission sources is refined, and the specific requirements for the concentration and quantity of permitted emission are not given. The fugitive emission control requirements shall be implemented in accordance with the Pollutant Emission Standard Amendment List of the 'Non-ferrous Metals Industry Air Pollutant Emission Standard'. Seven non-ferrous metal smelting pollutant discharge licensing technical specifications were released 4 Self-monitoring and management requirements The monitoring content is mainly the discharge of waste gas (organized + unorganized) and waste water (production, domestic waste water, initial rainwater), and the EIA approval after January 1, 2015 Enterprises, surrounding environmental impact monitoring points and monitoring indicators shall be implemented with reference to the requirements of the environmental impact assessment document of the pollutant discharging unit. The total allowable pollution factors of the main discharge outlets should be automatically monitored for particulate matter, SO2, NOx, COD, NH3-N, pH, and flow rate, and other factors can be monitored automatically or manually. Quarterly monitoring of fugitive emissions is carried out in accordance with the emission standards for the concentration of pollutants at the boundary of the factory.​​