微电解复合换填滤料的制备及其性能研究

Study on the Preparation and Properties of Micro-Electrolysis Composite Replacement Filter Material

本文深入探究了微电解复合换填滤料的制备工艺及其性能特性。通过采用化学还原法,成功制备了微电解复合换填滤料,并以Cr(Ⅵ)作为目标污染物,评估了其吸附效能。实验数据表明,该滤料对Cr(Ⅵ)具有优异的吸附能力。Freundlich模型拟合结果揭示了Cr(Ⅵ)在复合换填滤料表面发生的非均相多分子层吸附机制。为验证换填滤料的实用性,本研究将微电解复合换填滤料应用于雨水处理,并对常规污染指标进行去除效果评估。结果显示,与传统以本地土壤为填料的生物滞留带相比,该滤料在去除总磷(TP)、氨氮(NH_(3)-N)和化学需氧量(COD)方面的效率分别提高了21%,16.9%和8.3%。本研究不仅为海绵城市的建设提供了创新的改良填料方案,同时也积极推动了城市水资源可持续利用与环境保护目标的实现。

In this paper,the preparation technology and properties of micro-electrolysis composite refilling filter material are deeply investigated.By chemical reduction method,the micro-electrolytic composite replacement filter material was successfully prepared,and its adsorption efficiency was evaluated with Cr(Ⅵ)as the target pollutant.The experimental data show that the filter material has excellent adsorption capacity for Cr(Ⅵ).The fitting results of Freundlich model revealed the heterogeneous multimolecular layer adsorption mechanism of Cr(Ⅵ)on the surface of the composite refilled filter.In order to verify the practicability of replacement filter material,this study applied micro-electrolysis composite refilling filter material to rainwater treatment,and evaluated the removal effect of conventional pollution indicators.The results showed that compared with the traditional biological retention zone with local soil as filler,the filter material achieved a 21%,16.9% and 8.3% improvement in the removal efficiency of total phosphorus(TP),ammonia nitrogen(NH_(3)-N)and chemical oxygen demand(COD),respectively.This study not only provides an innovative and improved filler scheme for the construction of sponge city,but also actively promotes the realization of sustainable utilization of urban water resources and environmental protection goals.