Advanced sewage treatment device and method capable of synchronously removing silicon and fluorine

• Main Authors: LI YULONG, ZHAI XUEDONG, DING JING, YAN XUEYA, CHEN LINFENG, LIU FENGYANG, GUO CHAO, DAI JINGUO, SUI XINGBIN
• Format: Patent
• Language: Chinese; English
• Published: 05.07.2024
• Subjects: CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses an advanced sewage treatment device and method capable of synchronously removing silicon and fluorine, relates to a precipitation device and method for removing silicon and fluorine in water, and aims to solve the technical problems of low silicon removal efficiency, more added chemicals, complex operation and high cost of the conventional silicon removal method. The device is a tank body with a baffle in the center, and the tank body is divided into a coagulation area and a sedimentation area by the baffle; a stirrer, a first spiral heating pipe and a first inclined plate are arranged in the coagulation area, and a second inclined plate, a filtering device and a second spiral heating pipe are arranged in the settling area; an electro-adsorption device is arranged at the lower end of the baffle. The sewage treatment method comprises the following steps: introducing sewage containing silicon or/and fluorine into the coagulation zone, adding sodium metaaluminate and a coagulant, heating