Method for removing thallium pollution in source water of drinking water
A technology for water source water and pollution concentration, applied in the field of water treatment, can solve problems such as inappropriate removal, and achieve the effects of improving removal rate, flexible application and removing thallium pollution
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[0023] Example 1
[0024] A method for removing thallium pollution in drinking water source water, which includes the following steps:
[0025] a. Adjust the pH value, after routinely testing the drinking water source water thallium pollution concentration of 0.32μg / L, adjust the drinking water source water pH value to 9.0 with sodium hydroxide solution;
[0026] b. Pre-oxidation, using potassium permanganate as the pre-oxidant of thallium, and pre-oxidizing the thallium to make Tl + Convert to Tl 3+ , Add 2.0 mg / L of potassium permanganate to the drinking water source after the PH value is adjusted in step a, and the oxidation time is 30 minutes;
[0027] c. Coagulation and precipitation, add 2.4 mg / L polyaluminum chloride (with Al) to the drinking water source water pre-oxidized in step b 2 O 3 Meter), so that the Tl in the drinking water source 3+ Form Tl(OH) 3 Precipitation, sand filtration process can be used to remove thallium in drinking water source water.
[0028] The pH valu...
Example Embodiment
[0030] Example 2
[0031] A method for removing thallium pollution in drinking water source water, which includes the following steps:
[0032] a. Adjust the pH value, after routine testing of the drinking water source water thallium pollution concentration of 0.41μg / L, adjust the drinking water source water pH value to 9.2 with sodium hydroxide solution;
[0033] b. Pre-oxidation, using potassium permanganate as the pre-oxidant of thallium, and pre-oxidizing the thallium to make Tl + Convert to Tl 3+ , Add 1.5 mg / L of potassium permanganate to the source water of drinking water after the PH value is adjusted in step a, and the oxidation time is 40min;
[0034] c. Coagulation and precipitation, add 2 mg / L polyaluminum chloride (with Al) to the drinking water source water pre-oxidized in step b 2 O 3 Meter), so that the Tl in the drinking water source 3+ Form Tl(OH) 3 Precipitation, sand filtration process can be used to remove thallium in drinking water source water.
[0035] The pH v...
Example Embodiment
[0037] Example 3
[0038] A method for removing thallium pollution in drinking water source water, which includes the following steps:
[0039] a. Adjust the pH value. After routine testing of the drinking water source water thallium pollution concentration of 0.52μg / L, adjust the drinking water source water pH value to 9.2 with sodium hydroxide solution;
[0040] b. Pre-oxidation, using potassium permanganate as the pre-oxidant of thallium, and pre-oxidizing the thallium to make Tl + Convert to Tl 3+ , Add 2.5 mg / L of potassium permanganate to the drinking water source after the PH value is adjusted in step a, and the oxidation time is 20 min;
[0041] c. Coagulation and precipitation, add 2 mg / L polyaluminum chloride (with Al) to the drinking water source water pre-oxidized in step b 2 O 3 Meter), so that the Tl in the drinking water source 3+ Form Tl(OH) 3 Precipitation, sand filtration process can be used to remove thallium in drinking water source water.
[0042] The pH value of ...
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