Double-anode electric flocculation arsenic removing method
A technology of electrocoagulation and double anode, which is applied in the field of electrochemical treatment, can solve the problems of poor air injection efficiency, low adsorption efficiency, and difficulty in controlling the injection volume, so as to improve oxidation and adsorption performance, promote oxidation and adsorption removal, and avoid energy wasteful effect
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[0020] Example 1
[0021] The arsenic-contaminated groundwater area was simulated in a sealed reactor, 750ml of simulated groundwater containing 500μg / L arsenic (III) was added to the reactor, and the anoxic environment in the groundwater was simulated by nitrogen and oxygen removal (the initial dissolved oxygen concentration was 1mg / L or so). Insert iron sheets (length*width*height=58*50*2mm) and two titanium-coated electrodes (length*width*height=58*50*2mm) into the reactor as anode I, anode II and cathode, respectively. The cathode is located between the two anodes, and the electrode spacing is 4 cm. Use wires to connect the electrodes to the two outputs of a regulated DC power supply, and adjust the power supply to control the total current to 20-100mA. The current distribution ratio between anode I and anode II is adjusted by a varistor connected in series with anode I, and the distribution ratio is controlled between 1:0-1:1 according to the actual dissolved oxygen con...
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