The "Eleventh Five-Year Plan" of the National Environmental Protection has recently arrived at the top priority. It focuses on the prevention and control of pollution. Special mention is made of the prevention and control of persistent organic pollutants. As a result, 12 types of persistent organic pollutants, which are most harmful to human health and the natural environment, have once again become the focus of attention. Among them, the chemical product polychlorinated biphenyl has been criticized by the general public because of Beijing’s ongoing In the investigation of POPs, more than 300 pregnant women found that 90% of breast milk was found to contain polychlorinated biphenyls. How to prevent PCB contamination has become an unavoidable issue.
For a long time, the chemical industry has been regarded as one of the major sources of environmental pollution, and the above investigation has once again deepened people's understanding. People's lives can not be separated from the chemical industry, but the development of chemical products such as polychlorinated benzene does pollute our environment and endanger people's health. This seems to be an insoluble contradiction. In fact, we should face this issue with a more positive attitude. Another positive role of the chemical industry has not yet been fully realized. That is, the chemical industry is also one of the most important means to solve environmental pollution. While preventing pollution caused by the chemical industry, how to give full play to the role of the chemical industry in solving pollution and preventing pollution should be a more important issue, which of course requires the cooperation of various means and measures.
So, how does the chemical industry prevent pollution from PCBs? This requires first understanding PCB contamination.
Polychlorinated biphenyls are mainly used in the production of transformers, capacitors, paints, copy papers, and the plastics industry. Its toxicity mainly affects the skin, nerves, and liver, destroys calcium metabolism, causes damage to bones and teeth, and causes chronic cancer. And the possibility of genetic variation. China recognized the pollution of polychlorinated biphenyls very early, and issued related regulations in succession in the 1970s. It even stopped the production of polychlorinated biphenyls in the early 1980s. However, the existing amount of PCBs and their pollutants remains large. On the one hand, some products containing PCBs, such as transformers and capacitors, are still in use; on the other hand, many PCBs have been sealed for 20 years, and capacitors have cracked. The leakage of benzene has caused environmental pollution in the vicinity of the storage site. In some areas or units, illegal burning or landfilling of PCB wastes has occurred, and some storage sites have been built or covered. Permanent storage has also become a permanent potential contamination hazard.
What is gratifying is that the prevention and control of PCBs has not only been put on the agenda of our government, but has also become a law. The State Environmental Protection Administration recently announced the "Administrative Measures on the Prevention and Control of Environmental Pollution from Electronic Wastes" and requested implementation from February 1, 2008. It is believed that China's comprehensive control of polychlorinated biphenyls is just around the corner. What I want to mention is, "The bell must be tied." Since PCBs are chemical products, they may have to be solved by chemical methods. For this battle of polychlorinated biphenyls, chemical companies and chemical research institutes cannot sit idly by, but should make a difference.
The author proposes that the prevention and treatment of polychlorinated biphenyls in the chemical industry can be implemented in the following aspects: First, conduct a background survey on the environmental impact of polychlorinated biphenyls in key regions and establish a corresponding environmental impact and risk assessment approach for polychlorinated biphenyls. , Provide experience for the national census. The second is to strive for international assistance, strengthen technical cooperation, and improve the technological level of disposal of PCBs. The chemical industry can strengthen international technical exchanges and cooperation, use advanced foreign PCB incineration technology, and set up a set of industrial incineration PCB incinerators suitable for China's national conditions to resolve China's PCB incineration disposal capacity as soon as possible. Insufficient problems to meet the requirements for the centralized disposal of polychlorinated biphenyls in China. The third is to establish the technical specifications for the whole process of disposal of PCBs as soon as possible, conduct demonstration studies on the remediation of PCB contaminated sites, and cooperate with the government to formulate a polychlorinated biphenyl pollution prevention plan and technical and economic policy framework in line with China's national conditions.
What the government has to do is to promulgate the management regulations for the treatment of China's polychlorinated biphenyls' waste within a limited time as soon as possible, and to treat the PCB wastes, especially the PCB wastes that have caused pollution, and the wastes that have reached the shelf life; We will solve the problem of insufficient funding for the investigation of existing quantities of PCB power plants and their pollutants, treatment and disposal, and disposal devices as soon as possible. In many cases, the producers of PCB waste can no longer be clearly clarified, and even if they are clear, most of these units are unable to bear the processing costs. Therefore, it is recommended to establish a special cost for the disposal of polychlorinated biphenyls and their pollutants, so as to ensure the smooth progress of PCB pollution prevention and control in our country and thoroughly solve the pollution problems of polychlorinated biphenyls in China.
For a long time, the chemical industry has been regarded as one of the major sources of environmental pollution, and the above investigation has once again deepened people's understanding. People's lives can not be separated from the chemical industry, but the development of chemical products such as polychlorinated benzene does pollute our environment and endanger people's health. This seems to be an insoluble contradiction. In fact, we should face this issue with a more positive attitude. Another positive role of the chemical industry has not yet been fully realized. That is, the chemical industry is also one of the most important means to solve environmental pollution. While preventing pollution caused by the chemical industry, how to give full play to the role of the chemical industry in solving pollution and preventing pollution should be a more important issue, which of course requires the cooperation of various means and measures.
So, how does the chemical industry prevent pollution from PCBs? This requires first understanding PCB contamination.
Polychlorinated biphenyls are mainly used in the production of transformers, capacitors, paints, copy papers, and the plastics industry. Its toxicity mainly affects the skin, nerves, and liver, destroys calcium metabolism, causes damage to bones and teeth, and causes chronic cancer. And the possibility of genetic variation. China recognized the pollution of polychlorinated biphenyls very early, and issued related regulations in succession in the 1970s. It even stopped the production of polychlorinated biphenyls in the early 1980s. However, the existing amount of PCBs and their pollutants remains large. On the one hand, some products containing PCBs, such as transformers and capacitors, are still in use; on the other hand, many PCBs have been sealed for 20 years, and capacitors have cracked. The leakage of benzene has caused environmental pollution in the vicinity of the storage site. In some areas or units, illegal burning or landfilling of PCB wastes has occurred, and some storage sites have been built or covered. Permanent storage has also become a permanent potential contamination hazard.
What is gratifying is that the prevention and control of PCBs has not only been put on the agenda of our government, but has also become a law. The State Environmental Protection Administration recently announced the "Administrative Measures on the Prevention and Control of Environmental Pollution from Electronic Wastes" and requested implementation from February 1, 2008. It is believed that China's comprehensive control of polychlorinated biphenyls is just around the corner. What I want to mention is, "The bell must be tied." Since PCBs are chemical products, they may have to be solved by chemical methods. For this battle of polychlorinated biphenyls, chemical companies and chemical research institutes cannot sit idly by, but should make a difference.
The author proposes that the prevention and treatment of polychlorinated biphenyls in the chemical industry can be implemented in the following aspects: First, conduct a background survey on the environmental impact of polychlorinated biphenyls in key regions and establish a corresponding environmental impact and risk assessment approach for polychlorinated biphenyls. , Provide experience for the national census. The second is to strive for international assistance, strengthen technical cooperation, and improve the technological level of disposal of PCBs. The chemical industry can strengthen international technical exchanges and cooperation, use advanced foreign PCB incineration technology, and set up a set of industrial incineration PCB incinerators suitable for China's national conditions to resolve China's PCB incineration disposal capacity as soon as possible. Insufficient problems to meet the requirements for the centralized disposal of polychlorinated biphenyls in China. The third is to establish the technical specifications for the whole process of disposal of PCBs as soon as possible, conduct demonstration studies on the remediation of PCB contaminated sites, and cooperate with the government to formulate a polychlorinated biphenyl pollution prevention plan and technical and economic policy framework in line with China's national conditions.
What the government has to do is to promulgate the management regulations for the treatment of China's polychlorinated biphenyls' waste within a limited time as soon as possible, and to treat the PCB wastes, especially the PCB wastes that have caused pollution, and the wastes that have reached the shelf life; We will solve the problem of insufficient funding for the investigation of existing quantities of PCB power plants and their pollutants, treatment and disposal, and disposal devices as soon as possible. In many cases, the producers of PCB waste can no longer be clearly clarified, and even if they are clear, most of these units are unable to bear the processing costs. Therefore, it is recommended to establish a special cost for the disposal of polychlorinated biphenyls and their pollutants, so as to ensure the smooth progress of PCB pollution prevention and control in our country and thoroughly solve the pollution problems of polychlorinated biphenyls in China.
Flow Meters,Level Meters Co., Ltd. , http://www.china-flow-meter.com