Method for processing cyanogens-containing waste water from gold mine
A treatment method and technology of cyanide wastewater, which is applied in the field of pollutant treatment and can solve problems such as wastewater environmental pollution
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Embodiment 1
[0022] A treatment method for gold mine cyanide-containing wastewater, the method may further comprise the steps:
[0023] a, waste water regulation: add sulfuric acid, hydrochloric acid, sodium hydroxide solution, the copper sulfate solution that concentration is 40% to waste water, the pH value of waste water in the control reaction process is 8, and the reaction time is 25min;
[0024] b. Coagulation treatment: Stir the reacted waste water clockwise according to the linear speed of 5m / s, add alum, put the waste water into the sedimentation tank and let it stand for 20min;
[0025] c. Secondary coagulation treatment: After removing impurities, stir the wastewater according to the specified speed and add polyacrylamide to the wastewater, then put it in the sedimentation tank and let it stand for 15 minutes;
[0026] d. Ultraviolet treatment: irradiate the supernatant of the waste water with an ultraviolet lamp, and the irradiation time is 20 minutes;
[0027] e. Concentratio...
Embodiment 2
[0029] A treatment method for gold mine cyanide-containing wastewater, the method may further comprise the steps:
[0030] a, waste water regulation: add sulfuric acid, hydrochloric acid, sodium hydroxide solution, the copper sulfate solution that concentration is 50% to waste water, control the pH value of waste water in the reaction process to be 9.5, and the reaction time is 30min;
[0031] b. Coagulation treatment: Stir the reacted wastewater in a clockwise direction at a linear speed of 15m / s, add polyaluminium chloride, and put the wastewater into a sedimentation tank for 30 minutes;
[0032] c. Secondary coagulation treatment: After removing impurities, stir the wastewater according to the specified speed and add polyacrylamide to the wastewater, then put it in the sedimentation tank and let it stand for 20 minutes;
[0033] d. Ultraviolet treatment: irradiate the supernatant of the waste water with an ultraviolet lamp, and the irradiation time is 30 minutes;
[0034] ...
Embodiment 3
[0036] A treatment method for gold mine cyanide-containing wastewater, the method may further comprise the steps:
[0037] a, waste water regulation: add sulfuric acid, hydrochloric acid, sodium hydroxide solution, the copper sulfate solution that concentration is 45% to waste water, control the pH value of waste water in the reaction process to be 8.7, and the reaction time is 28min;
[0038] b. Coagulation treatment: Stir the reacted waste water clockwise according to the linear speed of 10m / s, add alum, put the waste water into the sedimentation tank and let it stand for 25 minutes;
[0039] c. Secondary coagulation treatment: After removing impurities, stir the wastewater according to the specified speed and add polyacrylamide to the wastewater, then put it in the sedimentation tank and let it stand for 18 minutes;
[0040] d. Ultraviolet treatment: irradiate the supernatant of the waste water with an ultraviolet lamp, and the irradiation time is 25 minutes;
[0041] e. C...
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