Improper use of US$1.1 billion in annual losses The Ministry of Agriculture will strengthen pesticide residue monitoring
Wang Yunhao, Director of the Ministry of Agriculture's Institute of Pesticide Verification, said in a report entitled "Pesticide Management and Environmental Safety" that with the continuous deepening of scientific research and continuous advancement of technology, the negative impact of pesticides has been gradually recognized by people and attracted great attention. The excessive application and abuse of pesticides will cause excessive pesticide residues in agricultural products. This will not only cause human poisoning and death, but also seriously affect the export trade of China's agricultural products and pesticides. In recent years, trade disputes have frequently occurred due to excessive pesticide residues in agricultural and sideline products. Due to the abuse of pesticides, China’s annual losses amount to as much as US$1.1 billion. Therefore, strengthening the management of pesticide environmental safety is the need to improve the management level of pesticides, to protect the safety and health of people and livestock, to protect the ecological environment, to ensure the sustainable development of agricultural production, and to protect the import and export of agricultural products and pesticide products. The need for trade.
Wang Yunhao revealed that the Ministry of Agriculture will strengthen the monitoring of pesticide residues in agricultural products in three steps. The first is to speed up the formulation of pesticide residue testing methods and limit standards. The second is to increase the technical guidance and training for the monitoring of pesticide residues and improve the overall level of pesticide residue monitoring in China. The third is to strengthen the tracking and monitoring of pesticide residues in vegetables, fruits, and tea in pollution-free agricultural production bases and agricultural product export bases, as well as in large and medium-sized cities, and regularly publish inspection results to the public.
The dryer is made of cast iron, which has two ends of a hollow cylinder. It is made up of cylinder block and cylinder head at both ends. The outer diameter is mostly 1000 to 3000mm. During the running process, the steam will dry and burn the paper transported. The cast iron dryer used for paper mill is a key component of paper drying - type I pressure vessel. The number of cast iron dryers accounts for about 2/3 of the total number of pressure vessels in the paper industry. The material for making the dryer is generally HT200 and HT250. In the manufacturing of quality requirements and no penetration and large blisters, in order to increase the smoothness of the paper, the outer surface of the dryer polished inner surface turning light, keep the cylinder wall thickness is consistent, in order to ensure safety, balance and heat evenly throughout the dryer. The dryer is used to dry the paper sheets in the water, surface finishing.
The main parts of dryer include: heat pump, steam supply system, condensate recovery system, flash tank, pressure difference control system, pressure control system, flash tank, non condensable gas removal system, hot water pump, manual control program, warm up paper break startup program and so on.
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