摘要：

采用CaO/NaAlO₂预处理-微电解-Fenton工艺对经物化-生化处理后的精制棉废水进行处理。当控制n（Ca²⁺）：n（Al³⁺）比为4：1，n（Ca²⁺）：n（Cl^-）为11：1时，氯离子去除率达84.11%，COD去除率达81.25%，高于Fenton法、Fe/C微电解法、Fe/C微电解-Fenton联用的较优COD处理效果（42.5%、20.21%、65.625%），GC-MS分析表明，经CaO/NaAlO₂-微电解-Fenton处理后废水中有机物大量减少，只有少量γ-谷甾醇残留。

关键词: CaO/NaAlO₂预处理, Fenton, Fe/C微电解, 废水回用

Abstract:

The refined cotton wastewater after the physicochemical treatment is further treated by CaO/NaAlO₂ pretreatment-microelectrolysis-Fenton process. When the ratio of n(Ca²⁺) and n(Al³⁺) is 4:1 and the ratio of n(Ca²⁺) and n(Cl^-) is 11:1, the removal rates of chloride ion and COD are 84.11% and 81.25%, respectively. The COD removal rate is higher than that of Fenton method, Fe/C micro-electrolysis method, Fe/C microelectrolysis-Fenton combined with better COD treatment effect(42.5%, 20.21%, 65.625%). Through the GC-MS analysis, the organic matter in the wastewater was greatly reduced, and only a small amount of γ-sitosterol remained after CaO/NaAlO₂-microelectrolysis-Fenton treatment.

Key words: CaO/NaAlO₂ pretreatment, Fenton, Fe/C microelectrolysis, wastewater reuse

中图分类号: 

• X703