The implementation of water vapor pollutant emission standards in the inorganic phosphorus industry across the country is not uniform, not well-targeted, lags behind actual needs, etc... These issues will soon be resolved with the implementation of the “Inorganic Phosphorus Chemical Industrial Pollutant Emission Standardsâ€. . In March, the Ministry of Environmental Protection collected opinions from the community on this standard. The reporter learned at the end of March in an interview that this mandatory national standard, while regulating the discharge of inorganic phosphorus chemical pollutants, put forward higher and stricter requirements, and will promote technological advancement of the entire industry, support the strong and evil, and promote industrial upgrading. In order to achieve the inorganic phosphorus industry, energy-saving emission reduction and clean production. Cnc Cutting Machine,Cnc Plasma Cutting Machine,Cnc Laser Cutter,Laser Cnc Machine JARRY CNC MACHINERY CO.,LTD , https://www.jarry-machinetool.com
“At present, the pollutant discharge standards implemented by the industry are not well-targeted, and the limits of pollutants are not uniform. They seriously dampen the enthusiasm of enterprises for pollution control and environmental protection, are not conducive to fair competition and healthy development of the industry, and are not suitable for China’s environmental protection. At the same time, the current standards do not treat the different pollutants produced by the industry with multiple varieties and processes, which is not scientific enough.†Wang Peilin, deputy secretary-general of the China Inorganic Salt Industry Association, who drafted the standard formulation work, was interviewed by the reporter. Said. In addition, due to continuous technological progress, the level of governance of atmospheric pollutants in the inorganic phosphorus chemical industry has generally been improved, and the current standards are too broad. Judging from the development of the industry, industrial policies, and environmental protection requirements, it is not only necessary but also necessary to formulate emission standards that are technologically advanced, economically reasonable, environmentally acceptable, practicable, and consistent with the requirements for clean production, energy saving, and emission reduction. No delay.
It is understood that China is the largest producer, consumer, and exporter of inorganic phosphorus chemical products in the world. However, currently, the inorganic phosphorus chemical industry does not have a specific water vapor pollutant emission standard. Instead, it implements the Integrated Wastewater Discharge Standard and the Atmosphere respectively. Integrated discharge standards for pollutants, "Emission Standards for Water Pollutants in Phosphate Fertilizer Industry" and "Emission Standard for Air Pollutants in Industrial Furnaces and Kilns". These standards are not formulated for the inorganic phosphorus chemical industry, and naturally cannot fully reflect the particularity of the industry's pollutant emissions.
For example, the vast majority of inorganic phosphorous chemical products are produced from yellow phosphorus. The impurities such as arsenic and fluorine contained in yellow phosphorus are directly brought into the product. The water pollutants contain a certain amount of arsenic, fluoride and elemental substances. Phosphorus, but the current standards do not have these pollutants and emission limits; as another example, total phosphorus is a characteristic pollutant in the water pollutants of the inorganic phosphorus chemical industry, and some companies currently implement 50 mg of the original phosphorus industrial emission standard. Rising limits, and some companies are implementing a limit of 0.5 mg/L in the Integrated Wastewater Discharge Standard, with an index difference of up to 100 times. According to the current industrial pollutant treatment technology level, companies that implement the latter are difficult to meet even after hard work, and the implementation of the former's limit is too loose. In addition, the main component of wastewater discharged during the production of sodium hypophosphite is hypophosphite, which is difficult to handle. To meet the standard of total phosphorus concentration below 0.5 mg/L, the treatment cost is high and the enterprise is unbearable; Kiln exhaust gas and dry tail gas are treated, the pollutant discharge concentration is usually up to 100 ~ 130 mg/m3, and the current industrial furnace kiln air pollutant discharge standard provides an emission limit of 150 ~ 400 mg/m3.
Li Shuyuan, a member of the Shaanxi Provincial Decision-making Advisory Committee and a chemical expert, told the reporter that the main characteristics of the inorganic phosphorus chemical industry are the large number of products, complex production methods and processes, and more harmful pollutants in wastewater and waste gas. The current standards cannot adapt to new environmental protection needs. It is necessary to formulate a unified emission standard with advanced technology and reasonable standards.
In response to these characteristics, combined with the industry's existing process technologies and treatment levels, the new standards determine pollutant discharge concentration limits and wastewater, exhaust emissions, including water pollution control projects include pH, suspended solids, chemical oxygen demand, There are nine items such as total phosphorus, elemental phosphorus, total arsenic, total nitrogen, ammonia nitrogen, and fluoride. Air pollution control projects include particulate matter, sulfur dioxide, fluoride, arsenic and its compounds, and hydrogen chloride. In water pollutants, total arsenic is a toxic pollutant that needs to be controlled at the discharge gate of a workshop or production facility.
Located in the Three Gorges reservoir area, China's largest fine-phosphor chemical company, Hubei Xingfa Chemical Group Co., Ltd., has the largest number of new standards concerning its inorganic phosphorus products. “Our comprehensive utilization of waste has been the breakthrough point, insisting on technological innovation and process improvement. We have been implementing the most stringent emission standards and have taken the lead in adopting a variety of new wastewater and waste gas treatment technologies. At present, the comprehensive utilization ratio of exhaust gas and industrial water reaches 95% and 90 respectively. We are very confident about the implementation of the new standard," said Hao Xiaobin, the company's safety and environmental protection minister. The head of the production department of Sichuan Longhao Group Co., Ltd. also expressed the same opinion to reporters.
“Inorganic phosphorous chemical production enterprises in China have significantly improved their structural adjustment, technological progress, product quality, and energy consumption in recent years, and most companies can meet the requirements of the new standard as long as they work hard. However, some of them have low technology levels, small-scale equipment, and energy consumption. High- and heavy-polluting small and medium-sized enterprises must quickly step up their technological transformation and improve their ability to control pollutants. Otherwise, it will be difficult to meet the standards and eventually be eliminated. Wang Peilin reminded the industry companies.