Method for removing odor in water by activating calcium peroxide with ferrous iron

• Main Authors: LIU SHANSHAN, SHAO ZENGHUI, XU JIZHENG, GUO WEI, YANG SHU, CHEN YUE, TANG YULIN, YU YUE
• Format: Patent
• Language: Chinese; English
• Published: 17.01.2020
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a method for removing odor in water by activating calcium peroxide with ferrous iron, which comprises the following steps: preparing calcium peroxide into a solution, adding ferrous sulfate, and preparing 0.1 mol/l Na2S2O3 as an oxidant quenching agent for later use; preparing three same odor-containing water samples containing dimethyl isoborneol, geosmin, beta-cyclocitraland dimethyl trisulfide; respectively adding a solutions prepared in the step (1) into the three water samples, so that the concentrations of calcium peroxide in each part are 2.0 mmol/L, 1.0 mmol/Land 1.0 mmol/L respectively, and the concentrations of ferrous ions in each part are 0.5 mmol/L, 0.5 mmol/L and 0.1 mmol/L respectively; sampling for 10 mml every a certain time, and sending the watersamples to a GCMS system to detect the concentration of odorous substances in the water samples to obtain the concentration of the odorous substances. Calcium peroxide is catalyzed by ferrous ions togenerate hydroxyl radicals,