含磷废水铁盐除磷工艺优化研究_冶金工程.rar

摘要:水体富营养化是自然界普遍存在的一种缓慢的生态退化过程，人类活动造成的污染大大加速了这一过程。磷是水体富营养化最主要的控制因子，降低污水中的磷含量可有效防止水体富营养化。因此，含磷废水铁盐除磷工艺优化研究对我国水资源保护具有重要意义。

    本文通过铁盐除磷的方法，依据铁盐形成的胶体吸附原理，研究了铁盐除磷过程磷的变化行为。实验结果表明：在pH为5左右、吸附时间60min左右、100mL初始废水中加入的FeSO4·7H2O 0.3g、浸出温度45℃的浸出条件下除磷效果较好，除磷后废水中含磷量低于国家排放标准。

关键词：含磷废水  亚铁盐除磷   吸附  综合除磷

ABSTRACT:Eutrophication is a kind of slow nature widespread ecological degradation process, the pollution caused by human activities greatly accelerated the process. Phosphorus is the main control factor of eutrophication of water body, reduce the phosphorus in the sewage which can effectively prevent water eutrophication.  Therefore, iron phosphorus wastewater phosphorus removal process optimization study is of great significance to protect water resources in China.

　　　This paper, by means of iron and phosphorus, according to principle of iron salt formation of the gel adsorption of phosphorus iron phosphorus removal process was studied changes in behavior. Experimental results show that the pH is about 60 min 5 or so, adsorption time, initial wastewater with 100 ml of FeSO4·7 H2O 0.3 g, leaching temperature of 45 ℃ under the condition of phosphorus removal effect is good, after the dephosphorization phosphorus content in waste water is lower than the national discharge standard.

Keywords：Phosphorus wastewater; Ferrous salt phosphorus removal; adsorption; Comprehensive and phosphorus