Method for preparing composite catalyst by synergistically utilizing red mud and arsenic alkali residues, product and application thereof

• Main Authors: WAN SHAOHANG, YIN WENYU, YAN CHENGYU, HUANG TAO, XU QINGYANG, SUN XIAOLONG, YANG SUNGUL, XIE HAOLAN, XIA YUN, SONG DONGPING, LI AIYING
• Format: Patent
• Language: Chinese; English
• Published: 06.06.2025
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a method for preparing a composite catalyst by synergistically utilizing red mud and arsenic alkali residues as well as a product and application thereof, and belongs to the field of resource utilization of industrial wastes. The method disclosed by the invention is simple in preparation process, wide in preparation raw material source and capable of realizing full-amount utilization of the red mud and the arsenic alkali residues. Compared with a traditional titanium dioxide and iron arsenate catalyst, the composite catalyst prepared by the method is more excellent in performance, the landfill leachate treatment efficiency can be remarkably improved, and the catalytic removal effect of 2145 mg/g COD, 162 mg/g total phosphorus, 356 mg/g ammonia nitrogen and 122 mg/g mercury can be achieved at most. 本发明公开了一种协同利用赤泥与砷碱渣制备复合催化剂的方法、其产品及应用，属于工业废弃物资源化利用领域。本发明的方法制备工艺简单，制备原料来源广泛，可实现赤泥与砷碱渣的全量利用。相比于传统的二氧化钛和砷酸铁催化剂，本发明所制备的复合催化剂性能更加优异，可显著提升对垃圾渗滤液处置效率，最高实现2145mg/gCOD、162mg/g总磷、356mg/g氨氮、122mg/g汞的催化去除效