杭州第二棉纺厂自投产以来,空调采用地下水。水中含有大量铁离子(50毫克/升)和氯化物(氯离子2400毫克/升),将含盐量和含铁量这样高的空调废水不经任何处理直接排入厂区附近的河里,对地表水体造成了严重的污染,这不仅影响了肖山自来水厂水源,而且附近农田用被污染的河水灌溉后,水稻早期发育不良,稻根吸氧减少,生铁斑点病等,致使每年减产粮食20～25万斤,厂方只得以赔款的办法补偿损失。为解决这个问题提出了废水地下处理。 Since the second cotton mill in Hangzhou has been put into operation, air conditioning uses groundwater. Water contains a large amount of iron ions (50 mg / L) and chloride (chloride ion 2400 mg / L), the salt content and iron content of air conditioning wastewater without any treatment directly into the plant near the river, Surface water body caused serious pollution, which not only affected the water source of Xiao Shan Waterworks, and the nearby farmland was irrigated with polluted river water, rice poorly developed, reduced oxygen in rice roots, pig iron spot disease, resulting in annual reduction of food 20 ~ 25 kg, the factory can only indemnify the way to compensate for the loss. To solve this problem proposed underground wastewater treatment.