Method for treating high-arsenic polluted acid by utilizing zinc slag
A technology of high-arsenic polluted acid and arsenic polluted acid, which is applied in the fields of filtration treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of cumbersome operation steps, low energy consumption and low pollution of wet treatment, and achieve technological The effect of simple operation, reduced stockpiling, and high arsenic removal rate
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Embodiment 1
[0019] Example 1: The components of the zinc slag in this example are shown in Table 1. The dirty acid comes from the dirty acid containing a large amount of impurities such as arsenic that is produced after the sulfuric acid workshop of the zinc smelter in Southwest China washes the smelting flue gas. The main components are shown in Table 2. Show;
[0020] Table 1 Composition of Zinc Slag
[0021]
[0022] Table 2 Sewage Acid Components
[0023]
[0024] A method for treating high-arsenic polluted acid by using zinc slag, the specific steps are as follows:
[0025] (1) Add commercially available hydrogen peroxide to high-arsenic polluted acid and mix evenly to obtain mixed solution A; wherein the volume ratio of hydrogen peroxide to high-arsenic polluted acid is 1.2:1;
[0026] (2) Add zinc slag powder to mixed solution A, and use dilute sulfuric acid to adjust the pH value of the system to 2 to obtain mixed solution B; wherein the particle size of zinc slag powder i...
Embodiment 2
[0034] Embodiment 2: The composition of zinc slag in this example is shown in Table 5. The dirty acid comes from the dirty acid containing a large amount of impurities such as arsenic produced after the sulfuric acid workshop of the zinc smelter in Southwest China washes the smelting flue gas. The main components are shown in Table 6. Show;
[0035] Table 5 Composition of Zinc Slag
[0036]
[0037] Table 6 Pollution Acid Components
[0038]
[0039] A method for treating high-arsenic polluted acid by using zinc slag, the specific steps are as follows:
[0040] (1) Add commercially available hydrogen peroxide to high-arsenic polluted acid and mix evenly to obtain mixed solution A; wherein the volume ratio of hydrogen peroxide to high-arsenic polluted acid is 1.3:1;
[0041] (2) Add zinc slag powder to mixed solution A, and use dilute sulfuric acid to adjust the pH value of the system to 3 to obtain mixed solution B; wherein the particle size of zinc slag powder is 200-...
Embodiment 3
[0049] Embodiment 3: The zinc slag composition of this example is as shown in Table 9. The dirty acid comes from the dirty acid containing a large amount of impurities such as arsenic produced after the sulfuric acid workshop of the zinc smelter in Southwest China washes the smelting flue gas. The main components are as shown in Table 10. Show;
[0050] Table 9 Composition of Zinc Slag
[0051]
[0052] Table 10 Sewage Acid Components
[0053]
[0054] A method for treating high-arsenic polluted acid by using zinc slag, the specific steps are as follows:
[0055](1) Add commercially available hydrogen peroxide to high-arsenic polluted acid and mix evenly to obtain mixed solution A; wherein the volume ratio of hydrogen peroxide to high-arsenic polluted acid is 1.4:1;
[0056] (2) Add zinc slag powder to mixed solution A, and use dilute sulfuric acid to adjust the pH value of the system to 4 to obtain mixed solution B; wherein the particle size of zinc slag powder is 200...
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