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1985年11月8日在一次水质分析中发现,自来水氨氮高达20mg/L,于1986年3～5月我们对污染源进行了调查。 调查发现,自来水厂水源的沿岸有四家工厂:两个机械厂和一个锻造厂均不排放氨氮废水,在自来水厂抽水站上游11km处,有一座生产碳酸氢氨的小化工厂在造气合成过程中污染了冷却水而形成氨氮废水每小时约排放1000m~3左右。 为了解水源污染情况我们于1986年4月10日、4月24日、5月13日三次对氮肥厂上游200m(对照点)、距该厂排污口50m(污
November 8, 1985 in a water quality analysis found that tap water ammonia nitrogen up to 20mg / L, from March to May 1986, we conducted a survey of sources of pollution. The survey found that there are four factories along the coast of the water plant: two plants and a forging plant do not discharge ammonia-nitrogen wastewater. At 11km upstream of the pumping station of the waterworks, a small chemical plant producing ammonium bicarbonate is used in gas synthesis The process of pollution of the cooling water to form ammonia nitrogen wastewater discharge about 1000m ~ 3 per hour or so. In order to understand the situation of water pollution, we carried out three times on April 10, April 24 and May 13, 1986 three times on the upper reaches of the nitrogenous fertilizer plant (control point), 50 meters away from the sewage outfall of the plant