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本文以小白鼠为对象对国产阻垢剂HEDP(羟基乙叉二膦酸)进行了毒性试验。HEDP的半数致死剂量(LD_(50))的结果表明,HEDP属低毒化合物。循环冷却水中HEDP通常的使用浓度2～10mg/l,对于环境保护是安全的。一、前言我国缺水问题比较严重,目前我国缺水城市有200多个,目前每天共缺水1200多万吨。其中工业缺水量每天达800万吨左右。在工业用水中,冷却水的用量约占总工业用水量的80～90%,采用循环冷却水技术可以节约冷却水用量的95～97%,故循环冷却水技术得到了广泛应用。
In this paper, the toxicity of the domestic scale inhibitor HEDP (hydroxyethylidene-diphosphonic acid) was tested in mice. The results of the median lethal dose (LD_ (50)) of HEDP showed that HEDP is a low toxic compound. Circulating cooling water HEDP usually use the concentration of 2 ~ 10mg / l, for environmental protection is safe. I. Preface The problem of water shortage in our country is rather serious. At present, there are over 200 water-shorten cities in our country. At present, there are over 12 million tons of water shortage every day. Among them, the industrial water shortage reaches about 8 million tons every day. In industrial water, the amount of cooling water accounts for about 80 ~ 90% of the total industrial water consumption, using recycled cooling water technology can save 95 ~ 97% of the amount of cooling water, so circulating cooling water technology has been widely used.