高盐含酚废水的降解及其在离子膜电解中的资源化利用

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关键词：FeCo-C/N;MOFs衍生催化剂；高盐含酚废水；资源化利用；离子膜电解 图分类号：X781.2 文献标志码：A DOI：10.3969/j.issn.1003-9015.2025.04.015

Abstract：If high-salinityorganicwastewater isdischargedwithoutefective treatment，itwillcauseenvironmental polution and waste of inorganic salts.In thecontext ofcarbon neutralityand peak carbon dioxide emissons，the " zero discharge"of high-salinity wastewater and the high-value reuse of salt have becomethe research focus of highsalinity wastewater treatment.As the efficient removal of organic polltants from high-salinity wastewater is a prerequisite for achieving desalinated water reuse and the utilization of salt resources in wastewater，MOFs-derived catalyst FeCo-C/N was prepared. Then the FeCo-C/N +03 catalytic oxidation system was applied to treat high-salinity phenol-containing wastewater with a NaCl concentration of 310g⋅L-1 and a total organic carbon（TOC）content ranging from 20 to 60mg⋅L-1 . Due to the oxidation reaction， the removal rate of TOC reached 65.1% to 88.2% ，resulting in a residual TOC content in the wastewater of less than 10mg⋅L-1 ，which meets the quality requirements of inletsaltwater for the ionic membrane-based chlor-alkali process.Subsequently，an ionic membrane electrolysis test wasconductedonthe oxidized high-salinitywastewater toensure thattheNaClconcentration inthe dilute brine from the anode was between 200.0 and 210.0g⋅L-1 ，while the NaOH concentration from the cathode was between 32.0% （2号 and 33.5% . After 336h of electrolysis process，the current eficiency and power consumption per ton of alkali were （2号 96.8% and 2167.0kW⋅h ，respectively. These experimental results indicate that the treated high-salinity phenolcontaining wastewater exhibits stabilityandeconomy during the ionic membrane electrolysis process，suggesting its broadapplication prospects in high-salinity wastewater resource utilization.These results serve as aguide for the large-scale application of high-salinity organic wastewater as raw brine in the chlor-alkali electrolysis industry.

Key words：FeCo-C/N；MOFs derived catalysts；high-salinity phenol containing wastewater;resource utilization；ionic membrane electrolysis process

1前言

高盐有机废水未经适当处理任意排放，不但会严重污染水生态环境，同时还会浪费大量无机盐等有价值的资源。（剩余18684字）