Method for resource utilization of waste sulfuric acid wastewater produced in copper smelting and acquisition of arsenic-containing products
A technology for sewage acid wastewater and copper smelting, which is applied in metallurgical wastewater treatment, chemical instruments and methods, alkali metal sulfite/sulfite, etc. and other problems, to achieve the effects of high fluorine and chlorine removal rate, high cost and non-volatile
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Embodiment 1
[0057] In this embodiment, the sulfuric acid waste water discharged from the sulfuric acid workshop of a copper smelter in Hubei is used as the treatment object. The lead content is 650mg / L, the lead content is 30mg / L, the cadmium content is 124mg / L, the zinc content is 287mg / L, and the pH is 1.5.
[0058] A method for utilizing and obtaining arsenic-containing products from sulfuric acid waste water resources in the copper smelting industry described in this embodiment, the steps are as follows:
[0059] (1) Oxidation stage: Take 1L of polluted acid wastewater, place it in a polluted acid storage tank for air aeration, the gas-liquid ratio is 1.0, the air aeration time is 10h, and the dissolved oxygen in the solution after aeration is 9.1mg / L;
[0060] The polluted acid wastewater after aeration flows into the hydrogen peroxide reaction tank, and 8wt% hydrogen peroxide is added in two sections at the bottom of the hydrogen peroxide reaction tank. The amount of hydrogen peroxi...
Embodiment 2
[0085] In this embodiment, the sulfuric acid waste water discharged from the sulfuric acid workshop of a copper smelter in Gansu is used as the treatment object. The lead content is 200mg / L, the lead content is 60mg / L, the cadmium content is 50mg / L, the zinc content is 1407mg / L, and the pH is 0.7.
[0086] A method for utilizing and obtaining arsenic-containing products from sulfuric acid waste water resources in the copper smelting industry described in this embodiment, the steps are as follows:
[0087] (1) Oxidation stage: take 1L of polluted acid wastewater, place it in a polluted acid storage tank for air aeration, the gas-liquid ratio is 1.0, the air aeration time is 8 hours, and the dissolved oxygen in the solution after aeration is 8.7mg / L;
[0088] The polluted acid wastewater after aeration flows into the hydrogen peroxide reaction tank, and 10wt% hydrogen peroxide is added in two sections at the bottom of the hydrogen peroxide reaction tank. The amount of hydrogen p...
Embodiment 3
[0103] In this embodiment, the sulfuric acid polluted acid wastewater discharged from the sulfuric acid workshop of a copper smelter in Anhui is used as the treatment object. The lead content is 350mg / L, the lead content is 80mg / L, the cadmium content is 30mg / L, the zinc content is 430mg / L, and the pH is 0.6.
[0104] A method for utilizing and obtaining arsenic-containing products from sulfuric acid waste water resources in the copper smelting industry described in this embodiment, the steps are as follows:
[0105] (1) In the oxidation stage, take 1L of polluted acid wastewater, place it in a dirty acid storage tank for air aeration, the gas-liquid ratio is 1.0, the air aeration time is 15 hours, and the dissolved oxygen in the solution after aeration is 9.4mg / L;
[0106] The polluted acid wastewater after aeration flows into the hydrogen peroxide reaction tank, and 8wt% hydrogen peroxide is added in two sections at the bottom of the hydrogen peroxide reaction tank. The amou...
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