Cyanide-containing wastewater treatment method
A treatment method, the technology of cyanide wastewater, which is applied in the field of water treatment, can solve the problems of air pollution, incomplete ferrous sulfate treatment, and the effluent can not meet the discharge standard, so as to achieve the effect of reducing pollution
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[0017] A method for treating cyanide-containing wastewater, the method comprising the steps of:
[0018] (1) Adjust the pH value of the cyanide-containing wastewater to 6.5-7.5;
[0019] (2) Carry out electrolysis reaction, the electrode of electrolysis reaction adopts graphite electrode;
[0020] (3) Aeration reaction while stirring and adding flocculant and coagulant;
[0021] (4) precipitate and filter and take the filtrate;
[0022] (5) The filtrate treated in step (4) is subjected to an ultraviolet oxidation reaction and then discharged.
[0023] In the method for treating cyanide-containing wastewater described in this embodiment, sulfuric acid, hydrochloric acid, sodium hydroxide solution or milk of lime is used for pH adjustment in step (1).
[0024] In the method for treating cyanide-containing wastewater described in this embodiment, polyacrylamide is used as the flocculant described in step (3), and sodium sulfate is used as the coagulant aid; the amount added is...
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