System for treating acidic wastewater in acid preparing process by metallurgical off-gas

• Main Authors: JIA XIAOJUN, LIU YUANRONG, ZHANG SHURONG, LIN ZHEN, YANG ZHENJIE, MA YAN, GAN XIANFU, HUANG HAILI, FENG YONGJUN, CAO WEI, LIU YUQIANG, ZHAO QIANLI, CHANG QUANZHONG
• Format: Patent
• Language: Chinese; English
• Published: 15.01.2014
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The utility model provides a system for treating acidic wastewater in an acid preparing process by metallurgical off-gas. The system comprises a first-stage reaction kettle, a second-stage reaction kettle, a third-stage reaction kettle, a slag pot and a slurry pump which are connected in sequence, wherein stirring paddles are arranged in the first-stage reaction kettle, the second-stage reaction kettle and the third-stage reaction kettle; the lower part of the first-stage reaction kettle is connected with the lower part of the second-stage reaction kettle through a first communication pipe; the upper part of the second-stage reaction kettle is connected with the upper part of the third-stage reaction kettle through a second communication pipe; the upper part of the third-stage reaction kettle is connected with the slag pot through an overflow pipe; the first communication pipe is connected with a sodium sulfide pump and a sodium sulfide storage tank; the second communication pipe is also connected with a ferr