In recent years, with the rapid growth of China's economy, economic development and resources and the environment are increasingly sharp contradiction, the industrial boiler SO2, O2 and wastewater COD emissions total indicators of determination measurement and control has become an urgent need. Tangshan Mining Company, as the main production mine, not only for the completion of the Group's targets to provide support for the role of cover, but also to achieve their own scientific development. As the only production mine located in the urban area in the country, it is important to control the emission of various pollutants. 1 Company Profile. Our company is one of the large-scale specialized mines belonging to Kailuan (Group), whose predecessor is the Tangshan Mine of Kailuan Mining Bureau, founded in 1878, which is the source of modern coal mining industry in mainland China. Existing three major industrial relics: First, Tangshan Mine No. 1 shaft, excavated in February 1879; Second, China's first standard railroad, in August 1881, the mine's official coal production of 3,613 tons of coal that year, the end of the same year, Tangshan to Xuguozhuang railroad construction was completed, the railroad is China's first standard railroad; Third, the hundred years of Dadaodao, in 1899 in the No. 1 wells to the northwest of the wells excavated in the north and south of the tunnel-type bridge, known as the tunnel. In 1899, this north-south tunnel bridge was excavated from No.1 Well to Northwest Well, which is called "Dadao". The three major industrial relics are still in service today, which is why Tangshan Mine has gained the reputation of "China's First Best Mine". After more than 130 years of transformation and development, the mine is still full of vitality. 2 Based on the current situation of the company's waste gas and waste water emissions, we have established and improved the online monitoring system. At present, our company's ground pollutants mainly include two categories of waste gas and waste water, of which the waste gas is mainly SO2 and other pollutants generated by the combustion process of the boiler in the central boiler room and the boiler room in the tenth well, with an annual emission of about 112 tons; the waste water is mainly mine water pumped to the ground from the underground, with the main pollutant COD and the average concentration of 80mg/L. In order to realize the scientific and informatization management of our company's various outlets, and keep track of the treatment of pollutants in a timely manner, we have established and improved the online monitoring system. In order to realize scientific and informative management of our company's sewage outlets and grasp the data of pollutant treatment in time, we have installed online monitoring equipment in three locations. Among them, the central boiler room and the wind well boiler room respectively install a flue gas online monitoring equipment to monitor the flue gas compliance, and the online monitoring equipment of the central boiler room has been networked with the Municipal Environmental Protection Bureau; the coal washing plant sewage treatment plant installs a COD online monitoring equipment to monitor the sewage compliance, and has been networked and managed with the Group Company. 3 Based on the monitoring data of the online monitoring system, ensure that the pollutants are discharged according to the standards (a) Flue gas online monitoring system. According to our company's flue gas emissions, our company chose the SCS-900C type CEMS online automatic monitoring system with leading technology and easy maintenance. The monitoring principle and performance of this equipment are in line with the Technical Specification for Continuous Monitoring of Flue Gas Emission from Fixed Pollution Sources. The system carries out continuous automatic monitoring of the concentration of particulate matter and gaseous pollutants from solid pollution sources as well as the total amount of pollutants discharged, and analyzes SO2 and O2 in the boiler by applying the direct extraction and heating method. The monitoring data and information are also transmitted to the environmental protection authorities to ensure that the pollutant concentrations and total emissions of the discharging enterprises meet the standards. At the same time, a variety of related environmental protection equipment such as desulfurization, dust removal and other devices, also rely on the data from the flue gas online monitoring for monitoring and management, in order to improve the efficiency of environmental protection facilities. After the installation of flue gas online monitoring system in the boiler room of the company, our department can grasp the accurate data of exhaust gas pollutant emission through the network at any time, and compare the data stored in the online monitoring system on a daily basis, so as to effectively control the emission of pollutants in the company and reduce the total amount of pollutant emission. (ii) Water quality online monitoring system. According to our company's water quality, our company chooses EST-2001B type CODcr online automatic monitor produced by Guangzhou Yiwen Technology Co. The automatic monitoring system adopts the design idea of instrument modularization, module intelligence and system networking, and determines the COD concentration in water samples according to the national standard method, and adopts the method of potassium dichromate digestion + ammonium ferrous sulfate titration to monitor the COD in sewage. In order to make the water quality of Steep River clear and to make the discharged mine water reach the national standard, our company has installed a water quality on-line monitoring system in the sewage treatment plant according to the requirements of Tangshan Environmental Protection Bureau, which is used to monitor the COD concentration of the mine water of our company. After networking, the monitoring equipment will have automatic alarm function in case of failure, power failure, insufficient reagent stock, no sample, no wash water, abnormal value exceeding the standard, etc., so that our company can take preventive and emergency measures in time to ensure that the company's pollutants meet the standard discharge. 4 to improve the system as the core, to promote the company's energy saving and environmental protection work steadily (a) improve the system. According to the spirit of the document "Tangshan key pollution sources online monitoring and control system installation and operation management measures", in order to clarify the responsibilities of the relevant units of my company's online monitoring and control system use, my department has formulated the "online monitoring equipment management system" and "online monitoring equipment assessment system" to further improve the company's online monitoring management. In order to guarantee that the online monitoring system can run stably for a long time, our company has signed a series of maintenance and management contracts such as "Maintenance and Repair Contract of Flue Gas Online Monitoring Equipment in Boiler Room of No.10 Well in Area B", "Maintenance and Repair Contract of COD Online Monitoring Equipment", "Commissioning and Management Contract of COD Online Automated Monitor" and other maintenance and management contracts with Lvchuang Environmental Protection Company. It ensures that the emission of particulate pollutants from our boiler meets the national standard and the COD concentration in the external drainage water meets the national standard. Our company strictly implement the unified requirements of Tangshan Environmental Protection Bureau, in order to make the third-party operation fully realized, our company signed the "central boiler room flue gas online monitoring equipment and facilities for third-party operation" contract with Tangshan Lvchuang Environmental Protection Company Limited, based on the content of the signed contract, the company in accordance with the technical requirements and specifications in a timely manner will be on our online monitoring facilities for maintenance and operation and management, to ensure that our online monitoring facilities Stable and reliable operation of our online monitoring facilities, correct transmission of pollutants to the Tangshan Environmental Protection Bureau correct data. (ii) Daily management. In order to ensure the normal operation of the monitoring equipment, my department has developed a daily inspection system and the establishment of inspection ledger, in accordance with the "Site Inspection Arrangements" daily there will be a group of people to each site to check the operation of equipment and facilities and sewage and flue gas emissions, will be summarized into the ledger, such as special circumstances timely report to the leadership to ensure that problems found on the scene can be resolved in a timely manner to ensure that the company's pollutant emissions. Emission of pollutants to meet the standards. 5 Project implementation effect. This year, due to the operation of the pollutant online monitoring system, the company's wastewater and waste gas emissions indicators have always maintained a low level, in the Environmental Protection Agency, the Urban Management Bureau, the Group Environmental Protection Office and other higher authorities in various types of inspections have been well received. Promote automatic monitoring system of pollution sources, not only for us to conveniently obtain the relevant pollutant data, more importantly, we can use this advanced management technology for real-time monitoring of pollutants in our company, and take preventive and emergency measures in a timely manner, so as to ensure that our company pollutants meet the standards of discharge from the image of environmental protection.
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