Iron carbon microelectrolysis equipment

Iron carbon microelectrolysis equipmentAs a deep processing Fenton process, the front-end usually needs to be processed, and micro electrolysis process is usually used as the front-end pretreatment of Fenton process. This will achieve better results and greatly save medication costs, thereby reducing operating costs.

1、 Principle of Iron Carbon Microelectrolysis Equipment

Iron carbon microelectrolysis equipment, utilizingFe2+andH2O2The chain reaction between them catalyzes the generation of hydroxyl radicals with strong oxidizing properties(OH)It can oxidize various toxic and difficult to degrade organic compounds. For the treatment of high concentration and difficult to biodegrade wastewater, it can be used as a biological pretreatment to improve water quality, enhance the biodegradability of wastewater, and create favorable conditions for subsequent deep treatment. Especially suitable for the deep treatment of organic wastewater such as leachate that is difficult to biodegrade or is difficult to effectively oxidize by general chemical methods.

Micro electrolysis oxidation tower is a necessary equipment for advanced oxidation treatment, also known asmicro-electrolysisReactor ormicro-electrolysisreaction tank. The equipment mainly includes an oxidation tower, sieve plate, packing and Fenton oxidation zone, iron carbon reaction zone, inlet water distribution zone, outlet zone, outlet tank, circulation device, and necessary pipe fittings.

2、 Introduction to the process of iron carbon microelectrolysis equipment

The Fenton process is used to treat industrial wastewater, which can oxidize and decompose organic matter in industrial wastewater in a very short time, with a relatively high oxidation rate and no secondary pollution. And the infrastructure investment for this process is relatively low, and there is no need to spend a lot of money during the application process. The operation process is relatively simple.

Microelectrolysis reactorOxidation tower includes oxidation tower, sieve plate, and packing materialAPacking materialBFenton oxidation zone, iron carbon reaction zone, inlet water distribution zone, outlet zone, outlet tank, circulation device and necessary pipe fittings, etc. It can also be designed separately according to specific needs, and the material can be fiberglass or carbon steel. If carbon steel is used for production, effective anti-corrosion measures must be taken, otherwise the service life will be greatly reduced. However, fiberglass material itself has acid and alkali resistance, so no additional protective measures are needed, and the cost is greatly reduced, making it more popular.

3、 Product Details

The necessary equipment for high difficulty oxidation of wastewater through Fenton reaction can improve the biodegradability of wastewater through oxidation methods. The working principle of Fenton reactor mainly includes two functions: oxidation and coagulation of organic matter. As one of the important devices in sewage treatment, Fenton reactor has applications in removing recalcitrant organic pollutants.

1Adding an aeration system inside the equipment reduces the degree of contamination on the surface of the iron carbon filler, maintains the high activity of the iron carbon filler, and completely solves the "passivation" phenomenon of the equipment.

2The addition of raw materials as a new type of micro electrolysis filler replaces the usual iron filings, making the reaction more thorough and complete.

3The microelectrolysis method can be used as a separate treatment method or as a pretreatment process for biological methods. In addition to improving the biochemical properties of wastewater, it is beneficial for the settling performance of activated sludge and the membrane formation performance of biofilm methods;

4This method can achieve the effect of chemical precipitation for phosphorus removal and can also remove heavy metals through reduction.

5The equipment structure fully considers the continuous and uniform inflow and distribution of water, completely solving the "short flow" phenomenon of the equipment.

4、 Factors affecting iron carbon microelectrolysis equipment

Iron carbon microelectrolysis equipment has been widely used in industrial wastewater treatment in recent years, achieving good results. So what are the influencing factors of him? Let's provide a detailed introduction:

1Temperature factor

In the Fenton reaction, temperature is an important factor affecting its effectiveness. As the temperature continues to increase, the speed of the Fenton reaction will gradually accelerate. With the increase of temperature,OHThe generation speed will increase, which can promoteOHReacting with organic matter to enhance oxidation efficiency and improveCODCrThe removal rate. The increase in temperature will also causeH2O2The decomposition speed accelerates and decomposes intoO2giveH2OThis is forOHThe generation is unfavorable[1]The appropriate temperature for Fenton reaction varies among different types of industrial wastewater,

2、pHprice

Normally, Fenton reagents only react in acidic environments,pHThe improvement will makeOHThe occurrence is limited and there may be precipitation of iron hydroxide, resulting in loss of catalytic ability. If there is a high concentration in the solutionH+，Fe3+Cannot be restored toFe2+The catalytic reaction will be hindered[2]In acidic environments, especiallypHexist3-5During this period, Fenton reagent has strong oxidation ability, and the degradation rate of organic matter is relatively fast, which can be degraded within a few minutes. At the same time, the reaction rate of organic compounds andFe2+And the initial concentration of hydrogen peroxide is directly proportional. The use of Fenton process in industrial treatment requires the treatment of wastewaterpHAdjust to3.5Left and right are better.

3Organic compounds

The usage and oxidation efficiency of Fenton reagent vary for different types of industrial wastewater, mainly due to the presence of different types of organic compounds in different types of industrial wastewater. For carbohydrates such as sugars, due to the action of hydroxyl radicals, molecules undergo dehydrogenation reactions,C-CKey breakage chain;For water-soluble polymers and ethylene compounds, hydroxyl radicals can causeC=CKey breakage. Hydroxyl radicals can cause aromatic compounds to undergo ring opening and form fatty compounds, reducing the biological toxicity of this type of wastewater and improving its biodegradability.

4、H2O2Quantity of catalyst input

When using the Fenton process to treat industrial wastewater, it is necessary to clarify the amount of chemicals to be used and their economic viabilityH2O2If the quantity is relatively large, it will increase the concentration of wastewaterCODCrThe removal rate. But after reaching a certain quantity,CODCrThe removal rate will show a gradually decreasing trend. The quantity of catalyst input andH2O2The same situation exists in the amount of investment,Fe2+The quantity has increased,CODCrThe removal rate will increase to a certain extent,CODCrThe removal rate will decrease[3]In practical work, it is necessary to clarify through experimentsH2O2The amount of catalyst input.

Iron carbon microelectrolysis equipment technology is a wastewater treatment technology that utilizes electrochemical reactions based on battery principles to treat complex wastewater. It utilizes iron-There is a potential difference between carbon particles, forming countless tiny primary cells. These delicate batteries use iron with low potential as the cathode,Carbon with high potential as anode,Electrochemical reactions occur in aqueous solutions containing acidic electrolytes. The result of the reaction is that iron is corroded and becomes divalent iron ions that enter the solution. Due to the coagulation effect of iron ions,It strongly attracts particles with weak negative charges in pollutants,Form relatively stable flocs(Also known as iron mud)And remove it.

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