Method for using ozone-immobilized biological activated carbon for realizing deep treatment of industrial wastewater

Abstract

The invention discloses a method for using ozone-immobilized biological activated carbon for realizing the deep treatment of industrial wastewater and relates to a deep treatment method of the industrial wastewater. The method can solve the problems that the existing industrial wastewater deep treatment processes have the common defects of greater investment, unstable process operation, unstable treatment effect and incapability of meeting environmental protection requirements, thereby causing difficult deep treatment of the industrial wastewater; and the method can also solve the problem that the adoption of the ozone-immobilized biological activated carbon technology is not applicable to the industrial wastewater deep treatment. The method comprises the following steps: 1) leading outlet water of pre-treatment to enter into a contact oxidation tower, and carrying out ozone aeration; 2) injecting the outlet water from the contact oxidation tower into an immobilized biological activated carbon tank; and 3) leading the outlet water from the immobilized biological activated carbon tank to enter into an ultrafiltration water tank for completing the method. The method can effectively carry out the deep treatment of the wastewater, reduce the cost, stabilize the process operation and stabilize the treatment effect, thereby being applicable to the deep treatment processes of petrochemical wastewater, printing and dyeing wastewater, coking wastewater and other types of wastewater and leading the water quality COD of the outlet water to be lower than 50mg/L.

Description

technical field [0001] The invention relates to a method for advanced treatment of industrial sewage. Background technique [0002] Ozone activated carbon technology is currently the most advanced water treatment process in the world. It has been widely used in developed countries such as Japan, the United States, and Europe. At present, the use of ozone disinfection in my country is the development trend of water treatment and disinfection. The ozone biological activated carbon water purification process (BAC method) combining ozone and granular activated carbon includes three processes: ozone oxidation, activated carbon adsorption and biodegradation. The BAC method can efficiently remove organic matter in water and prolong the service life of activated carbon. [0003] Activated carbon (Carbon) is a specially treated carbon with a surface area of ​​500-1500 square meters per gram of activated carbon. Activated carbon has strong "physical adsorption" and "chemical adsorpt...

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Problems solved by technology

[0006] The present invention aims to solve the difficulty in the advanced treatment of existing industrial sewage, because the existing industrial sewage advanced treatment process generally has large investment, unstable process operation, unstable treatment effect, and cannot meet the requirements of environmental protection; and the use of ozone-fixed The technology of bioactivated carbon is not applicable to the problem of advanced treatment of industrial sewage, but provides an ozone-immobilized bioactivated carbon to realize the advanced treatment method of industrial sewage