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三氯乙醛(又名氯油)是一种重要的有机合成中间体,许多化工产品、药物、农药等都由三氯乙醛合成,特别在农药生产中,三氯乙醛的用量较大。工厂三废中的三氯乙醛污染灌溉水源,曾多次危害农田。例如1974年,天津蓟运河地区数万亩小麦由于上述原因造成大面积受害,其中万余亩绝收,北京、郑州等地均发生过类似事件。近年来,浙江、云南、江苏等地都发生了三氯乙醛污染肥源而使农田受害的事故。许多地方小型磷肥厂,常常从农药厂、废酸公司或农资公司购买含有三氯乙醛的废硫酸,生产过磷酸钙(又名土磷肥),这种肥料施于农田后能使作物受害,轻则减产,重则无收。前几年各地使用这类废酸生产腐植酸肥料时,亦曾发生过类似危害。由于当前许多省市正在积极发展小型地方磷肥厂,如不了解上
Chloral (also known as chlorine oil) is an important organic synthesis intermediates, many chemical products, pharmaceuticals, pesticides, etc. are synthesized from trichloroacetaldehyde, especially in pesticide production, the greater the amount of trichloroacetaldehyde . The three chloraldehydes in the three wastes of factories pollute the irrigation water and have endangered the farmland many times. For example, in 1974, tens of thousands of mu of wheat in the Jiyunhe area of Tianjin caused extensive damage due to the above-mentioned reasons, of which over 10,000 mu were absolutely taken in and similar incidents occurred in Beijing and Zhengzhou. In recent years, accidents involving farmland have been caused by the pollution of fertilizers by TCA in Zhejiang, Yunnan and Jiangsu. In many places, small-scale phosphate fertilizers often buy waste sulfuric acid containing trichloroacetaldehyde from pesticide plants, waste acid companies or agricultural companies to produce superphosphate (aka soil phosphate) that can damage crops after being applied to farmland , Ranging from light output, weight is no income. A few years ago when using this type of waste acid production humic acid fertilizer, there have been similar hazards. As many provinces and cities are actively developing small-scale local phosphate fertilizer plant, if you do not understand