The working principle of microelectrolysis is based on electrochemistry, redox, physical adsorption and flocculation and precipitation of the **** with the role of wastewater treatment. This method has the advantages of wide application range, good treatment effect, low cost, convenient operation and maintenance, and no need to consume power resources. This process is used for the treatment of difficult to degrade high-concentration wastewater can greatly reduce the cod and chromaticity, improve the biochemistry of wastewater, and at the same time can have a very good effect on the removal of ammonia nitrogen. Traditionally, the microelectrolysis process uses the microelectrolysis materials are generally iron chips and charcoal, before the use of acid and alkali activation, the use of the process is very easy to passivate the slate, and because iron and carbon are physical contact, so they are easy to form a barrier between the microelectrolysis can not continue to play a role in the loss of action, which results in the frequent replacement of electrolysis materials, not only the workload is large, the cost is high, but also affects the effectiveness and efficiency of the treatment of wastewater. This leads to frequent replacement of electrolytic materials, which is not only heavy workload and high cost but also affects the treatment effect and efficiency of wastewater.
Two, iron and carbon microelectrolysis principle of iron carbon filler reaction principle (i.e., iron carbon filler treatment of difficult industrial organic wastewater principle):
(1) electron flow: the use of iron and carbon potential difference between the iron element and the carbon element, iron and carbon elements, there exists a natural potential difference of 1.4 V. When the iron carbon filler is immersed in the water, the iron carbon filler can be used for the treatment of wastewater, and the iron carbon filler is used for the treatment of wastewater. When the iron and carbon filler immersed in waste water solution, waste water solution acts as a conductive solution, waste microelectrolytic filler price how much the pollutants in the water acts as an electrolyte. Under the weak electric field formed by the natural potential difference between iron and carbon, iron will release electrons, electrons under the action of the electric field from the anode to the cathode. The electrons have a probability of passing through the pollutant in the process, especially long-chain substances or substances containing benzene rings have a higher probability of passing through the electrons. The carbon chain of long-chain substances or substances containing benzene rings is connected to each other by pairs of electrons, when a single electron in the solution is interspersed, the single electron will be attracted by pairs of electrons in the carbon chain, so that the microelectrolytic filler price of how much to form a 3-electron structure, and this 3-electron structure is a very unstable structure, which exists for a certain period of time after the 3-electron structure will automatically explode, so that the long chain of substances is divided into 2 segments. Substances are divided into 2 segments. The electrons continue to interpenetrate, and the carbon chain will be divided again after the exercise, so that the carbon chain will become shorter and shorter. In this way, hard-to-biodegrade substances are transformed into easy-to-biodegrade substances. At the same time can reduce COD.
(2) Reduction: when the iron carbon filler immersed in waste water solution, as the anode of the iron will lose electrons so as to become iron ions, the newly generated iron ions have a very strong reducing properties, can be difficult to degrade substances in the wastewater for the reduction reaction.
(3) oxidizing: when electrons are interspersed in the wastewater, they will also pass through the water molecules, and when the water molecules are decomposed, a large number of hydrogen radicals, oxygen radicals, and hydroxyl radicals will be generated, and these new ecological radicals have very strong oxidizing property, which can completely oxidize the organic matter in the wastewater to carbon dioxide and water. Thus completely reduce the COD.
(4) Electrophoresis: electrons in the wastewater movement will be adsorbed with microelectrolytic filler price of how much positively charged pollution particles, adsorption of pollutants on top of the electrons to the movement of the cathode after the neutralization and then will be sunk to the bottom to be removed.
(5) flocculation: iron loss of electrons after the formation of iron ions, the new ecological iron ions and then added to the alkaline solution will form ferrous hydroxide, ferrous hydroxide is a good flocculating agent, can be adsorbed in the wastewater of a large number of organic flocculation precipitation.