Electrochemical pulse Fenton water treatment device

Abstract

The invention discloses an electrochemical pulse Fenton water treatment device, which is used in the technical field of water treatment and comprises a Fenton oxidation tower, a power supply, a pulsetank arranged above the Fenton oxidation tower and a circulating water pump capable of feeding water from the Fenton oxidation tower into the pulse tank, wherein the pulse tank and / or the Fenton oxidation tower are provided with a ferrous medicament dosing device, a water outlet is arranged in the Fenton oxidation tower, the Fenton oxidation tower is internally provided with an anode plate connected with the positive pole of the power supply and a cathode plate connected with the negative pole of the power supply, and the Fenton oxidation tower is internally provided with an aeration device extending to the cathode plate. The electrochemical pulse Fenton water treatment device has the following advantages that the wastewater biodegradability can be improved; the treatment efficiency of thetraditional Fenton is improved, and the quality of effluent water is ensured; the dosage of the medicament and the sludge yield is reduced, and the operation cost is low; the current efficiency of the micro-electric field is improved, so that the generation amount of H2O2, the regeneration efficiency of Fe <2+> and the recycling efficiency are improved.

Description

technical field [0001] The invention is used in the technical field of water treatment, and in particular relates to an electrochemical pulse Fenton water treatment device. Background technique [0002] The Fenton oxidation reactor is a relatively effective advanced sewage oxidation treatment process in the chemical oxidation method. The Fenton oxidation method is a technology that uses catalysts or photoelectrochemistry to generate highly oxidizing hydroxyl radicals (OH) through hydrogen peroxide to treat organic matter. The Fe-Fenton oxidation method is to make H 2 o 2 in Fe 2+ Under the action of catalysis, OH is decomposed to produce OH, and its oxidation potential reaches 2.8V, which is one of the strongest oxidation sites. It oxidizes and decomposes organic matter into small molecules through electron transfer and other ways. [0003] The traditional Fenton oxidation method has the following deficiencies in water treatment: [0004] 1. BOD of high concentration re...

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Problems solved by technology

[0004] 1. BOD of high concentration refractory industrial wastewater 5 / COD Cr No more than 0.3, poor biodegradability, complex ingredients, single nutritional imbalance, high chroma, high COD concentration;

[0005] 2. Traditional Fenton technology general Fe 2+ All are added in the form of a solution, which is a homogeneous catalyst. The added iron salt flows out with the water, which improves the color change of the effluent and affects the effect of the effluent;

[0006] 3. The traditional Fenton technology needs to add more Fe 2+ Reagent and H 2 o 2 , and the reaction conditions are relatively strict. In the actual operation process, the sludge output is relatively high, which is easy to cause secondary pollution;

[0007] 4. The electrochemical part of the electrochemical-pulse Fenton technology usually uses metals and their oxides, graphite and other materials as cathode materials, and because these cathode materials have low catalytic activity, H 2 o 2 production is low, Fe 2+ The regeneration efficiency is not high, the adaptation range is narrow, and the current efficiency is low.

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