Micellar complexing enhanced ultrafiltration treatment method and device for wastewater containing heavy metal ions

• Main Authors: LI HAIYU, WANG TAO, LI PINGGUI, GAO HONGFANG, FAN YELI, SUN XIONG
• Format: Patent
• Language: Chinese; English
• Published: 28.04.2023
• 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 micellar complexation enhanced ultrafiltration treatment method and device for wastewater containing heavy metal ions, and the method comprises the following steps: S1, carrying out self-assembly on poloxamer and tannic acid in an aqueous solution, so that multiple hydrogen bonds between phenolic hydroxyl groups of the tannic acid and ether bonds of the poloxamer interact and are combined, a poloxamer-tannic acid micelle mixed solution is formed; s2, mixing the poloxamer-tannic acid micelle mixed solution with wastewater containing heavy metal ions, so that the poloxamer-tannic acid micelle captures the heavy metal ions in the wastewater; and S3, filtering the liquid captured by the poloxamer-tannic acid micelles by using an ultrafiltration membrane to obtain filtrate, namely the wastewater without the heavy metal ions. The method is simple, poloxamer and tannic acid are self-assembled in an aqueous solution to form the poloxamer-tannic acid micelle with a specific structure, the pol