This work aims to prepare a robust yet low-cost dual-layer hollow fibre ceramic membrane composite membrane (DLZK) fabricated by co-extrusion phase inversion/co-sintering technique to be used in wastewater treatment. The dope suspensions were extruded simultaneously where the outer layer consists of zirconia while the inner layer consists of a mixture of kaolin and zirconia to enhance membrane performance in terms of mechanical strength and wastewater treatment capability. The effects of co-sintering temperature from 1200 to 1500 °C on the membrane’s mechanical strength, porosity, pore size, water permeability, and dissolubility in high alkaline/pH condition were investigated. The membrane performance was evaluated by real wastewater treatment test using two different types of industrial wastewaters which are palm oil mill effluent and textile industry wastewater. The findings show that the proposed method of producing the DLZK membranes could provide good interfacial adhesion and well-dispersed zirconia in the outer layer and the use of kaolin as an alternative natural material for ceramic membrane fabrication. The DLZK co-sintered at 1200 °C had the mechanical strength of 65 MPa, only 3.5 % loss of the original shape in high alkaline solution, and removed almost 95 % for all parameters of COD, TOC, TN, NH₃-N and TSS in the both wastewaters suitable for microfiltration purpose.

这项工作旨在制备一种坚固而低成本的双层中空纤维陶瓷膜复合膜（DLZK），该膜通过共挤出相转化/共烧结技术制造，用于废水处理。将涂料悬浮液同时挤出，其中外层由氧化锆组成，而内层由高岭土和氧化锆的混合物组成，以提高膜的机械强度和废水处理能力。研究了1200至1500°C的共烧结温度对膜在高碱性/ pH条件下的机械强度，孔隙率，孔径，水渗透性和溶解度的影响。通过使用两种不同类型的工业废水，即棕榈油厂废水和纺织工业废水，通过实际废水处理测试评估了膜的性能。研究结果表明，提出的生产DLZK膜的方法可以在外层提供良好的界面粘合力和良好的分散氧化锆，并可以使用高岭土作为陶瓷膜制造的替代天然材料。在1200°C下共烧结的DLZK具有65 MPa的机械强度，在高碱性溶液中仅损失了原始形状的3.5％，并且对于COD，TOC，TN，NH的所有参数去除了将近95％研究结果表明，提出的生产DLZK膜的方法可以在外层提供良好的界面粘合力和良好的分散氧化锆，并可以使用高岭土作为陶瓷膜制造的替代天然材料。在1200°C下共烧结的DLZK具有65 MPa的机械强度，在高碱性溶液中仅损失了原始形状的3.5％，并且对于COD，TOC，TN，NH的所有参数去除了将近95％研究结果表明，提出的生产DLZK膜的方法可以在外层提供良好的界面粘合力和良好的分散氧化锆，并可以将高岭土用作陶瓷膜制造的替代天然材料。在1200°C下共烧结的DLZK具有65 MPa的机械强度，在高碱性溶液中仅损失了原始形状的3.5％，并且对于COD，TOC，TN，NH的所有参数去除了将近95％两种废水中的_3- N和TSS均适合微滤。