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目前国内ADC发泡剂(化学名为偶氮二甲酰胺)行业年总产量约为15万t,占全世界总产量的75%以上,而且生产能力还在以年均10%左右的速度增长。但国内ADC生产主要采用尿素法,该方法不仅消耗大量的水(每吨ADC约需100t水),并产生大量的氨氮污染物(主要来自尿素,每吨ADC约产生500kg尿素)。然而,长期以来,由于氨氮废水处理技术的开发明显滞后
At present, the domestic annual production of ADC foaming agent (chemical name: azodicarbonamide) is about 150,000 tons, accounting for more than 75% of the total output of the world, and its production capacity is still growing at an average annual rate of about 10% . However, the domestic production of urea is mainly urea. This method not only consumes a large amount of water (about 100t of water per ton of ADC), but also produces a large amount of ammonia nitrogen pollutants (mainly from urea, about 500kg of urea per ton of ADC). However, for a long time, due to the development of ammonia nitrogen wastewater treatment technology has lagged far behind