A method of preparing a water treatment agent from chemical ferric oxide sludge

• Main Authors: WU SHUBIN, CHENG HAO, WAN JINQUAN, HUA WEN, ZHAO YUANYUAN, ZHOU YUN
• Format: Patent
• Language: Chinese; English
• Published: 14.07.2017
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a method of preparing a water treatment agent from chemical ferric oxide sludge, belongs to the field of functional materials, and particularly relates to a method of preparing an efficient water treatment agent by chemical ferric oxide sludge recycling and quantity reducing. The method includes dehydrating and drying sludge settled after Fenton treatment, then adding lignite in a proper ratio into the sludge, fully mixing the sludge and the lignite, adding the mixture into a high-temperature furnace, treating the mixture in the high-temperature furnace, then adding sulfuric acid having a certain concentration, reacting the mixture for a certain period of time, then subjecting a reaction solution to rotary evaporation in a rotary evaporator, and adding concentrated sulfuric acid and hydrogen peroxide in a proper ratio, and then polymeric ferric sulfate is prepared after a reaction is finished. The lignite is added and can reduce ferric iron in the sludge, thus increasing the iron extra