Treatment method for tungsten mineral material roasting flue gas spraying waste water
A technology of mineral raw materials and treatment methods, which is applied in gaseous discharge wastewater treatment, multi-stage water treatment, water/sewage treatment, etc., can solve the problem of stable discharge of wastewater that is not easy to mix production, increase the cost of comprehensive wastewater treatment, and increase mixed wastewater. Dealing with problems such as difficulty, to achieve continuous and stable discharge standards, reduce treatment difficulty, and reduce treatment costs
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Embodiment 1
[0027] 1. After the primary solid-liquid separation, the COD concentration in the filtrate is 10123mg / L, and the arsenic concentration is 830mg / L.
[0028] 2. Add calcium hydroxide solution to the filtrate at room temperature to make slag, and perform secondary solid-liquid separation after reacting for 1 hour.
[0029] 3. After secondary solid-liquid separation, adjust the pH value of the solution system to 10 with sulfuric acid, and add 30% hydrogen peroxide to oxidize for 48 hours at the same time, and the volume ratio of the hydrogen peroxide to the filtrate is 1:10.
[0030] 4. Take 100 mL of the solution obtained in step 3, add 15 mL of ferric chloride solution and 10 mL of calcium chloride solution, react for 0.5 hours, and perform three-stage solid-liquid separation. The concentrations of the ferric chloride and calcium chloride solutions are both 10%.
[0031] 5. After the three-stage solid-liquid separation, the COD concentration in the filtrate is 325mg / L, the arse...
Embodiment 2
[0033] 1. After the primary solid-liquid separation, the COD concentration in the filtrate is 10123mg / L, and the arsenic concentration is 830mg / L.
[0034] 2. Add calcium hydroxide solution to the filtrate at room temperature to make slag, and perform secondary solid-liquid separation after reacting for 1 hour.
[0035] 3. After secondary solid-liquid separation, adjust the pH value of the solution system to 10 with sulfuric acid, and add 30% hydrogen peroxide to oxidize for 48 hours at the same time, and the volume ratio of the hydrogen peroxide to the filtrate is 1:10.
[0036] 4. Take 100 mL of the solution obtained in step 3, add 25 mL of ferric chloride solution and 10 mL of calcium chloride solution, react for 0.5 hours, and perform three-stage solid-liquid separation. The concentrations of the ferric chloride and calcium chloride solutions are both 10%.
[0037] 5. After the three-stage solid-liquid separation, the COD concentration in the filtrate is 300mg / L, the arse...
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