Method for improving sterilization effect of ship ballast water based on microwave radiation activated C/CuO-Oxone composite system

Abstract

The invention discloses a method for improving the sterilization effect of ship ballast water based on microwave radiation activation of a C / CuO-Oxone composite system. The sterilization treatment of the ship ballast water is enhanced by exciting an Oxone reagent in a liquid-phase system through catalysis of a C / CuO composite material in cooperation with microwave radiation to generate a strong oxidation active substance. The method comprises the following steps of (1) preparing the C / CuO composite material, (2) respectively adding 15-20 g / L of C / CuO composite material and 0.008-0.015 g / L of Oxone reagent into the ship ballast water to be treated, and uniformly mixing to obtain the ballast water to be radiated, and (3) adopting a microwave generator to perform enhanced sterilization treatment on the ballast water to be radiated in the step (2), preferably, enabling the microwave treatment time to be 45-60 s, and the microwave power to be 500-1000 W. The method is easy to operate and short in reaction time, more strong oxidation active substances are generated by introducing the C / CuO composite material for catalysis and applying continuous stable microwaves to strengthen the Oxone reagent, bacteria in the ship ballast water can be rapidly killed, and the sterilization effect is remarkably improved.

Description

technical field [0001] The invention belongs to the field of ship ballast water purification treatment, and in particular relates to a method for improving the sterilization effect of ship ballast water by coupling a composite reagent with microwave excitation. Background technique [0002] Ballast water refers to the water and its suspended matter added to the ship to control the trim, heel, draft stability or stress of the ship. It can minimize the vibration caused by the ship's wake and ensure the safety of navigation. Every year, the amount of ballast water carried by ships around the world has exceeded 12 billion tons. On average, each ton of ballast water contains 110 million phytoplankton and plants, carrying more than 7,000 species of alien organisms that spread around the world. These alien organisms will spread rapidly, consume the food of indigenous organisms and occupy other living environments they need, threatening the balance of local ecosystems, social and ec...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: To solve the problems of long reaction time, high energy consumption, and production of disinfection by-products in the traditional ballast water sterilization physical treatment method; drug residues in the chemical treatment method, secondary pollution affecting the health of the crowd, etc.

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