Method for processing effluent by two-stage electrolysis and device thereof
An electrolysis, two-stage technology, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems that cannot be solved and affect water flow, and achieve small-scale treatment and high-response The effect of mild conditions and simple operation
Inactive Publication Date: 2010-07-21
HEFEI UNIV OF TECH
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AI Technical Summary
Problems solved by technology
If there are many types of organic matter contained in the wastewater, the current electrolysis method cannot solve the problem.
More importantly, the current forms of electrolysis devices include reflux type and tumbling type, both of which have the disadvantage that electrodes affect the flow of water.
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0035] Treat the waste water containing ammonia nitrogen with the method and device of the present invention, the concentration of ammonia nitrogen in the waste water raw water is 480mg / L, the electric current of the first electrolyzer 2 is set to 4.5A, the electrolytic treatment time is 10min, and the removal rate of ammonia nitrogen is 23%.
Embodiment 2
[0037] The electrolytic treatment time in Example 1 was extended to 20 minutes, and other conditions remained unchanged, and the removal rate of ammonia nitrogen reached 35%.
Embodiment 3
[0039] The electrolytic treatment time in Example 1 was extended to 30min, and other conditions remained unchanged, and the removal rate of ammonia nitrogen reached 50%.
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The invention discloses a method for processing effluent by two-stage electrolysis and a device thereof. The invention is characterized in that a first electrolytic tank and a second electrolytic tank are respectively arranged; in the first electrolytic tank, a positive electrode is made of titanium mesh plated with ruthenium and a negative electrode is made of stainless steel mesh; in the second electrolytic tank, a positive electrode is made of aluminum mesh and a negative electrode is made of stainless steel mesh; working power supply of the two electrolytic tanks is pulsed DC power supply; at first, electrolytic oxidation or reduction reaction is carried out on the effluent to be processed in the first electrolytic tank; then the effluent is injected into the second electrolytic tank for condensation processing suspended substance and colloid in the water; meanwhile, micro-bubbles generated at the positive electrode and the negative electrode in both the first electrolytic tank and the second electrolytic tank, capture and adhere impurity particles and organic matter in the water and bring them to the water surface. The invention separates the impurity particles and the organic matter in the water by means of electrolytic flotation, which greatly improves the efficiency of processing water pollutants by electrolysis.
Description
technical field [0001] The invention belongs to the technical field of wastewater treatment, and more specifically relates to an electrolytic wastewater treatment method and equipment. Background technique [0002] Among various water pollution control technologies, electrolysis has attracted widespread attention due to its advantages of high efficiency, rapidity, no need to add chemicals, mild reaction conditions, and simple equipment. [0003] Electrolysis can generally produce three effects, namely electrolytic redox, electrolytic flocculation and electrolytic air flotation. [0004] According to the electrolytic redox theory, any oxidation reaction that can release electrons can be carried out on the anode during electrolysis, and any reduction reaction that can obtain electrons from the cathode can also be carried out on the cathode, and a series of electrolyte solutions of organic substances may also occur. redox reaction. In the electrolysis process that produces th...
Claims
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IPC IPC(8): C02F1/461C02F1/463
Inventor 冯景伟钟华勇袁守军苏馈足胡真虎徐得潜
Owner HEFEI UNIV OF TECH
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