Thiols represent a source of environmental pollution especially wastewater. This work proposed to study the elaboration of cellulose acetate polymer-based membranes for their application in the removal of a sulfhydryl groups of real biological treated wastewaters. The addition of nanoparticles to membranes improves the water purification capacity by promoting a good separation of sulfur, more particularly by ZnO-NPs. We used ultrafiltration membrane-assisted ZnO and TiO₂ NPs application on real effluents from different biological treatment plants. We identified the hydrosulfite (thiol) group in wastewater and we used membrane processes ultrafiltration technique for sulfur removal. We evaluated the degradation of sulfur in biological treatment plants in Tunisia: The urban wastewater treatment plant or the conventional plant of Rades Malienne is a secondary biological wastewater treatment plant noted STEP1. The rural wastewater treatment plant based vertical flow planted with Phragmites australis from the Grombalia region noted STEP2 and rural wastewater treatment plant based horizontal flow planted with Phragmites australis from the Grombalia region noted STEP3. STEP1 is found to be more loaded with sulfur. Application of AC-ZnO membrane gives 99.07% and 99.55% of sulfur removal from wastewater of STEP1 and STEP3. STEP3 is 50 times less charged on sulfur than STEP1. We suggested that when the sulfur content is high, this leads to an increase in mineral elements. This could be explained by the interactions between thiols and the major elements that cause mineral pollution.

硫醇代表环境污染源，尤其是废水。这项工作旨在研究基于醋酸纤维素聚合物的膜的制备，以用于去除真实生物处理废水的巯基。通过促进硫的良好分离，尤其是通过 ZnO-NP，将纳米颗粒添加到膜中提高了水的净化能力。我们使用了超滤膜辅助的 ZnO 和 TiO ₂NPs 在不同生物处理厂实际污水中的应用。我们鉴定了废水中的连二亚硫酸盐（硫醇）基团，并使用膜法超滤技术去除硫。我们评估了突尼斯生物处理厂中硫的降解情况：城市污水处理厂或 Rades Malienne 的常规厂是二级生物污水处理厂，记为 STEP1。格罗姆巴利亚地区垂直流种植芦苇的农村污水处理厂注意到STEP2和基于水平流种植芦苇的农村污水处理厂来自 Grombalia 地区的注意到 STEP3。发现 STEP1 含有更多的硫。AC-ZnO膜的应用使STEP1和STEP3废水中的硫去除率分别为99.07%和99.55%。STEP3 的硫含量比 STEP1 少 50 倍。我们建议，当硫含量高时，这会导致矿物元素的增加。这可以通过硫醇与引起矿物污染的主要元素之间的相互作用来解释。