Electrocatalysis particle for treating cyanide-containing waste water and method for treating cyanide-containing waste water
A technology of catalytic particles and electrocatalysis, which is applied in the field of water treatment, can solve the problems of low current efficiency, high operating cost, and insufficient economy of electrolysis, and achieve the effects of low preparation cost, high mechanical strength, and improved treatment efficiency
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[0027] Example 1
[0028] Calculated by weight percentage, with 42% activated carbon as matrix, 14% iron oxide, 23% copper oxide, 4.5% manganese oxide, 1.2% zinc oxide, 0.6% zirconia, 0.7% cerium oxide as initiator, and 14% wood Calcium Sulfonate is used as a binder and mixed with water, then extruded and cut into pellets, then air-dried, and finally heated and carbonized and activated for 3 hours at 470°C and anoxic conditions to produce a particle size of 4-6mm Electrocatalytic particles for cyanide removal.
[0029] The synthesized electrocatalytic pellets for cyanide removal are set at an air flow of 1000L / h, a pulsed DC voltage of 30V, and a pH of 9.5. The amount of cyanide-containing wastewater is 200L, and the reaction time is 5, 10, 15, 20, 15, 30 min. Under the conditions, the intermittent static experiment was carried out on wastewater containing cyanogen concentration of 196mg / L ( figure 2 ); And under the same conditions, and the use of traditional three-dimensional e...
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[0030] Example 2
[0031] Under the same conditions of the special electrocatalytic pellets for cyanide removal (the electrocatalytic pellets of the present invention), and at an air flow of 1000L / h, the treatment capacity is 200L / hr, the mass ratio of electrocatalytic pellets to wastewater is 1:2, and the wastewater is The residence time in the catalytic cell is 30 minutes. The anode-feeding electrode material in the electro-catalytic cell is stainless steel, the anode-feeding electrode material is graphite, the distance between the feeding electrodes is 60cm, and the pulse DC voltage applied to the feeding electrodes is 30 volts. Under conditions, the cyanide-containing wastewater is treated (total cyanide concentration 170-200mg / L, pH 9.0-11.0), respectively, using the wastewater treatment device (electrocatalytic particle recycling cleaning device) used in Chinese patent CN200920263896.7, and the The traditional device (without electrocatalytic particle recycling cleaning fun...
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