Characteristics and advantages of Feichuang Technology's EC electrocoagulation technology

Due to its many advantages such as low operating costs, no chemical agents, small footprint, and high degree of automation, electrocoagulation wastewater treatment technology has been increasingly widely used in the field of high turbidity wastewater treatment. Especially in the treatment of coal containing wastewater in coal-fired power plants and coal mines, electrocoagulation technology has significant advantages compared to traditional chemical dosing. Chengdu Feichuang Technology Co., Ltd. has extensive research and strong R&D capabilities in the field of electrocoagulation wastewater treatment technology, and has optimized and improved existing technologies. It has multiple authorized patents and has successful achievements in various fields such as electricity, coal mining, oil and gas fields, chemical industry, papermaking, and fisheries. The relevant technical specifications are as follows.

Technical Description of Feichuang Technology

The electrocoagulation technology route adopted by Chengdu Feichuang Technology Company is derived from the Israeli electrocoagulation treatment process, as shown in the following figure:

Process flow: Raw water tank → Sewage lifting pump → Electronic flocculation device → Centrifugal clarification reactor → Intermediate water tank → Filtration water pump → Media filtration system → Clean water tank (reuse water tank).

Chengdu Feichuang Technology Company has made improvements to the existing electrocoagulation, especially in the method of reversing the polarity of the power supply, greatly improving the efficiency of electrocoagulation and reducing operating power consumption. As is well known, in order to avoid cathode scaling and anode passivation, the cathode and anode of the electrocoagulation device need to be constantly switched, that is, after a certain period of time, the cathode needs to be converted into the anode, and the anode needs to be converted into the cathode. Existing technologies usually set a timer and manually set a time period for polarity switching. However, due to different water quality conditions (such as varying hardness, alkalinity, salt content, temperature, etc.)pHThe cathodic and anodic reversal times of the electrocoagulation device are different, so reversing the electrodes in the same cycle to treat different water quality results in poor anti passivation effect. In order to improve the anti passivation effect, it is necessary to manually adjust the reversal cycle on site according to different water quality. Manual debugging is troublesome, and the existing electrocoagulation device cannot automatically adjust the reversal cycle with changes in water quality, resulting in unstable electrocoagulation effect. After electrode passivation, it will cause an increase in electrode resistance and power consumption. The patented technology of Chengdu Feichuang Technology Company has improved the electrode reversal time of electrocoagulation, which automatically controls the positive and negative polarity reversal time of the power supply by measuring the resistance increase rate between the anode and cathode in real time. It can be said to be an intelligent reversal technology. The specific principle is as follows: With the progress of electrocoagulation electrolysis, impurities, calcium and magnesium ions in the water gradually deposit on the cathode, and a strong oxidation reaction occurs on the anode, resulting in the formation of a dense metal oxide film passivation layer on the surface of the anode, which in turn leads to an increase in resistance. Real time detection of current values between the anode and cathode by the control system(I)And voltage value（U）And continuously calculate the resistance increase ratedR/RWhen the resistance increase rate reaches the set value within the control system, the control system immediately sends a command to the power supply to reverse the positive and negative polarities, reversing the direction of the cathode and anode, and resetting the current value of the resistance increase rate to zero. After reversing the electrodes, the resistance increase rate is recalculateddR/REnter the next commutation cycle. In this way, the control system automatically controls whether the positive and negative poles of the power supply are reversed based on the rate of resistance increase between the anode and cathode. The time of positive and negative pole reversal of the power supply is dynamically adjusted for different water qualities, effectively preventing anode passivation, improving the electrocoagulation effect, and avoiding the problem of poor electrocoagulation effect caused by using the same fixed reverse cycle power supply for different water qualities. And there is no need to manually change the reverse cycle of the power supply according to the water quality, reducing labor costs.

The relevant patents are as follows:

An electrocoagulation wastewater treatment device, authorized patent number:.2

A method for automatically reversing the polarity of the power supply of an electrocoagulation device, patent application number:.6

An electrocoagulation wastewater treatment system, authorized patent number:.5

A cyclone clarification reactor, authorized patent number:.7

Electric flocculation reactor, authorized patent number:.6

A coal containing wastewater treatment device, authorized patent number:.7

In summary, considering that electrocoagulation wastewater treatment technology has become a universal technology that can be applied in multiple industries, and Chengdu Feichuang Technology Company has optimized and improved electrocoagulation technology, it is worth promoting.