A device and method for combined treatment of high cod sewage

Abstract

The invention aims to provide a device and a method for treating high COD (Chemical Oxygen Demand) sewage in a combined way. In the method and the device, a modified activated carbon (MAC) adsorbent produced by the Eco Watertech Company is adopted. Pollutants in sewage are adsorbed onto the surface of MAC rapidly and effectively through the rapid adsorbing capability of the adsorbent. Afterwards, ozone is produced directly in the sewage through an online ozone generator (EO3) produced by the Eco Watertech Company. The ozone is directly adsorbed onto the surface of the MAC, and is subjected to an advanced oxidation process (AOP) by a hydroxyl radical (.OH) generated by MAC catalysis, so that COD pollutants adsorbed onto the surface of the MAC are rapidly and completely oxidized and degraded. Meanwhile, the pollutants on the surface of the MAC are removed under the action of oxidization, and the MAC is always in an unsaturated state. During running of the treatment device and the treatment process, the MAC does not need to be subjected to backwashing, and the pollutants in water can be rapidly and effectively oxidized. The device has the advantages of high adaptability and high treatment speed, and the floor area is reduced greatly.

Description

technical field [0001] The invention relates to a treatment device and a treatment method for treating high-COD sewage (COD index between 5000mg / L and 40000mg / L) in combination with physical adsorption technology and advanced oxidation technology, belonging to the technical field of sewage treatment. Background technique [0002] With the rapid development of industry, the types and quantities of wastewater have increased rapidly, and the pollution of water bodies has become increasingly widespread and serious, threatening human health and safety. The difficulty of wastewater treatment is also increasing. Among them, many high-COD wastewater cannot be treated up to standard by a single chemical method, biochemical method, physical method and other methods. Under such a premise, the present invention proposes a combination of physical adsorption technology and advanced oxidation technology to treat high-COD organic wastewater and a treatment process, which effectively solves...

AI Technical Summary

Problems solved by technology

Among them, many high-COD wastewater cannot be treated up to standard by a single chemical method, biochemical method, physical method, etc.

Under such a premise, the present invention proposes a combination of physical adsorption technology and advanced oxidation technology to treat high-COD organic wastewater and a treatment process, which effectively solves the problem that a single treatment method cannot meet the discharge standard, and also solves the problem of physical adsorption The technology is easily saturated and difficult to regenerate; and the problem that advanced oxidation technology cannot quickly deal with COD

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