Method for removal of solid impurities from papermaking wastewater

• Main Authors: ZHANG XILAN, ZHANG GUOJI
• Format: Patent
• Language: Chinese; English
• Published: 04.12.2018
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a method for removal of solid impurities from papermaking wastewater. The method includes: firstly pouring magnetic metal particles evenly into papermaking wastewater, performing high-speed stirring on the papermaking wastewater, at the same time heating the papermaking wastewater to distribute the magnetic metal particles evenly, then standing the papermaking wastewater for 10-15min to bond the magnetic metal particles with solid impurities in the papermaking wastewater fully, and then putting a magnet into the papermaking wastewater to adsorb the magnetic metal particles, thus bringing out the solid impurities in the papermaking wastewater. The method provided by the invention uses the magnetic metal particles as the carrier to remove solid impurities from the papermaking wastewater under the cooperation of the magnet. As the three metals are all magnetic and can be attracted by the magnet, the solid impurities in papermaking wastewater can be brought out smoothly. 本发明公开了种去除造纸废水中固体杂质