Waste water purification method and reactor adopting ozone oxidation catalysis and using compound suspended carrier

Abstract

The invention relates to a waste water purification method and a reactor both adopting ozone oxidation catalysis and using compound suspended carrier. The compound suspended carrier takes suspended activated carbon as a carrier and the compound of copper, iron, manganese, cobalt, and nickel as an active component. The compound suspended carrier is placed in an ozone oxidation catalysis reactor in water processing techniques, water inflows continuously and the reaction is carried out, so that a multi-phase heterogeneous oxidation catalysis system taking the activated carbon as the carrier is established, thereby improving the capability of ozone in optionally oxidizing organic pollutants in waste water and the utilization ratio of ozone, and removing the color and odor of the organic pollutants in waste water. The invention suits the pre-oxidation on slightly polluted drink water sources and deep treatment on organic industrial waste water, and is particularly suitable for the deep treatment on non-degradable organic waste water having received secondary treatment to greatly reduce biotoxicity, organic pollutants, and color of the waste water, lead the waste water after being treated to be similar to tap water, and achieve the purpose of carrying out deep treatment on organic waste water.

Description

technical field [0001] The invention relates to an activated carbon composite suspension carrier, a method and a reactor for catalytic ozone oxidation purification of waste water, and belongs to the technical field of water treatment. Background technique [0002] With the rapid development of the economy, various industrial categories are becoming more and more detailed, and the industrial wastewater produced is also diverse, such as printing and dyeing wastewater, tanning wastewater, coking wastewater, petrochemical wastewater, fine chemical wastewater, etc. Among these organic industrial wastewater The composition of pollutants is extremely complex, manifested as high organic content, poor biodegradability, deep color, complex water quality changes, and some wastewater even contains toxic substances. It is difficult to achieve advanced treatment requirements by conventional methods. If these wastewaters are not properly treated and discharged into water bodies, they will ...

AI Technical Summary

Problems solved by technology

However, there are problems such as the slow rate of ozone oxidation of organic pollutants and the low efficiency of ozone utilization, which directly lead to high operating costs in the field of water treatment of ozone oxidation, which limits its application in sewage and wastewater treatment.

[0005] At present, in order to improve the rate of ozone oxidation of organic pollutants and low utilization efficiency, Chinese patent CN1223523C discloses a method for catalytic ozone oxidation of activated carbon-biologically activated carbon to purify pollutants in water; Supported catalyst, with the oxide of transition metal Cu as the active composition, is used to catalyze ozone to treat wastewater; Chinese patent CN101863589A discloses a method for advanced treatment of sewage by filtration-ozone oxidation tower-internal circulation biological aerated filter, and the ozone catalytic oxidation tower The catalyst exists in the form of a fixed bed, and the catalyst is metal ion-supported Cu / TiO 2 / Al 2 Ozone catalyst; Chinese patent CN101580294A discloses a method of preparing heterogeneous catalytic oxidant on activated carbon with copper as active component and potassium as a cocatalyst; Chinese patent CN101664681B discloses that copper oxide is sintered onto ceramsite to prepare ozone catalyst approach

None of these published patents involves setting the carrier in a suspended form; the selective oxidation problem in the ozone catalytic oxidation process is not considered; the impact of the filled catalyst carrier on the release of ozone microbubbles from the microporous diffuser is ignored, and the ozone microbubbles are mixed with the filling The catalyst carrier condenses into large bubbles when in contact, reducing the effective contact between ozone and water

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