Method for removing organic pollutants and heavy metals in water by activating calcium peroxide with iron-nitrogen co-doped biochar

• Main Author: QIAN DONGXU
• Format: Patent
• Language: Chinese; English
• Published: 20.05.2022
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a method for removing organic pollutants and heavy metals in water by activating calcium peroxide with iron-nitrogen co-doped biochar. The method comprises the following working steps: step 1, dissolving an iron element, a nitrogen source and sodium borohydride in deionized water; 2, biomass material powder is added; 3, drying in a vacuum drying oven for 24 hours; step 4, transferring the material into a tubular furnace, and pyrolyzing under the condition of nitrogen protection; 5, washing the pyrolysis product with deionized water and ethanol for multiple times respectively; sixthly, the material obtained in the fifth step is placed in a drying vessel to be stored for use; 7, adding the obtained biological carbon material into the wastewater to be treated, adding the CaO2 suspension, and continuously stirring; 8, filtering the substance obtained in the step 7; the method has the beneficial effects that organic pollutants and heavy metals in the wastewater can be efficiently removed wh