Efficient electrocoagulation reactor capable of adjusting electrode distance

Abstract

The invention discloses an efficient electrocoagulation reactor capable of adjusting the electrode distance, which comprises a reaction tank, a negative electrode, a positive electrode, a stirring device and a power supply, wherein the upper part of the reaction tank is provided with a water outlet, and the lower part is provided with a water inlet and a dirt discharging opening; a partition plate for fixing the electrodes is arranged on the reaction tank; hole grooves which are spaced with equal distance are arranged on the partition plate, and the distance between every two adjacent groove holes is 10mm; and the distance between the negative electrode and the positive electrode can be adjusted by changing the positions of the negative electrode and the positive electrode which are inserted into the groove holes. The reactor of the invention can improve the treatment effect on sewage with different characteristics by changing the positions of the electrodes inserted into the groove holes on the premise of not increasing voltage or increasing the quantity of the reaction tank. The invention overcomes the defects of high energy consumption, complex operation, and the like of the electrocoagulation reactor, various pollutants, such as COD (Chemical Oxygen Demand), SS (Suspension), and the like in the sewage are removed at one step under the joint action of various electrochemical reactions, such as electrocoagulation, active oxidation, active reduction, and the like in the treatment process, and the removing rate is more than 90 percent.

Description

technical field [0001] The invention relates to the field of wastewater treatment equipment, in particular to a high-efficiency electrocoagulation reactor with adjustable electrode spacing. Background technique [0002] Electrocoagulation is a water purification technology that makes soluble anodes (sacrificial anodes) produce a large number of cations to flocculate wastewater under the action of an external electric field, thereby removing pollutants. It has the characteristics of electrochemical oxidation, flocculation and air flotation. [0003] Electrocoagulation technology has the advantages of simple and compact equipment, a wide range of pollutants that can be removed, and no need to add a large amount of chemicals. In the past 10 years, this technology has been used in the treatment of various industrial wastewater in European and American countries. D.Ryan et al. introduced the application of electrocoagulation to treat sugar industry wastewater in "Separation and P...

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Problems solved by technology

However, the current research mainly focuses on the effect of pollutant removal, and analyzes the influence of various factors such as electrolyte concentration, pollutant concentration, current density, electrode material, pH value, etc. on pollutant removal, and how to simplify electrocoagulation There is still a lack of in-depth research on the operation process, reducing energy consumption, and effectively preventing the passivation of the electrode plate, especially the theory of the forming design of the electrocoagulation reactor. For a specific water quality, what structure of the reactor, process parameters, How to optimize, etc., are still determined by experience or experiments, and cannot be fully inferred theoretically

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