Method of Simulating Fenton Reaction Combined with Ultrasonic Treatment of Landfill Leachate and Simulating Fenton-Ultrasonic Reactor

Abstract

The invention discloses a method for treating landfill leachate through combination of simulative Fenton reaction and ultrasonic. The method comprises the following steps: filling a simulative Fenton-ultrasonic reactor with the landfill leachate, adjusting the pH value, adding ferrous ions into the reactor, adjusting the ultrasonic frequency and the ultrasonic energy density in the reactor, performing the simulative Fenton reaction under an ultrasonic condition, adjusting the pH value after the reaction to terminate the reaction, and finally performing still standing for settlement. The simulative Fenton-ultrasonic reactor comprises an ultrasonic generator, an ultrasonic sensor, a pH online monitoring device and a reactor body, wherein a chemical adding opening, a landfill leachate inlet pipe and a landfill leachate draining pipe are arranged on the reactor body; the ultrasonic sensor is arranged inside the reaction chamber of the reactor body, and is connected with the external ultrasonic generator; the probe of the pH online monitoring device stretches into the reaction chamber of the reactor body. The method has the advantages of simple process, high treatment efficiency, good effect, low cost, environment friendliness and the like.

Description

Technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a treatment method and treatment equipment of landfill leachate. Background technique [0002] A large amount of landfill leachate is produced after the landfill. The leachate has large changes in water quality and quantity, high concentration of organic matter, high content of heavy metals and ammonia nitrogen, and serious pollution to the surrounding environment and the subsoil of the landfill. There are 22 kinds of organic compounds in the landfill leachate are included in the blacklist of China and the US EPA environmental priority control pollutants. In 2008, the state promulgated the "Pollution Control Standards for Domestic Waste Landfill Sites" (GB16889-2008), which put forward higher requirements for the treatment of landfill leachate. At present, domestic and foreign treatment technologies for landfill leachate mainly include biological treatment te...

AI Technical Summary

Problems solved by technology

[0005] However, there are not many cases in which the combination of Fenton reaction and ultrasonic technology is studied in the prior art, especially in the treatment of landfill leachate.

In fact, the treatment of existing landfill leachate still faces many technical problems, such as high treatment cost, large site occupation area, poor treatment effect, etc., and the overcoming and resolution of these technical problems still needs further improvement in the treatment method. R&D and Innovation

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