Device and method for treating household garbage leachate by utilizing rotational flow and electrochemistry

Abstract

The invention discloses a device and a method for treating household garbage leachate by utilizing rotational flow and electrochemistry. A primary rotational flow unit of the device is communicated with a multi-stage rotational flow electrochemical unit through a water inlet pipe; the primary rotational flow unit comprises a barrel and an overflow pipe, the overflow pipe is arranged at the middleupper part in the barrel, a sand setting nozzle is arranged at the bottom of the barrel, and the other end of the sand setting nozzle is communicated with a water inlet pipe; a central electrode column, a first-stage electrode cylinder, a second-stage electrode cylinder and a third-stage electrode cylinder of the multi-stage rotational flow electrochemical unit are coaxially arranged from inside to outside, an upper sealing cover is arranged at the top for sealing, and a lower sealing cover is arranged at the bottom for sealing; and a water outlet is formed in the third-stage electrode cylinder and is communicated with the outside through a water outlet pipe. By coupling an electrochemical process and the rotational flow device, the invention has the characteristics of strong treatment capacity, small occupied area and full utilization of space and materials, and can overcome the defect that an electrode plate in a traditional electrolysis device is easily covered by sediments.

Description

technical field [0001] The invention belongs to the field of solid waste treatment, and in particular relates to a device and method for treating domestic garbage leachate by using swirling flow and electrochemical treatment. Background technique [0002] The leachate treatment of urban waste landfills has always been a very difficult problem in the design, operation and management of landfills. The leachate has the characteristics of high concentration of organic matter, complex organic matter composition, high ammonia nitrogen content, and imbalanced carbon-nitrogen ratio. Traditional leachate treatment methods are mainly biological treatment, but due to the particularity of leachate components, biological treatment often does not achieve good results, and the treatment cycle is long. Electrochemical technology has the advantages of no secondary pollution and no need for additional oxidant, and is considered to be one of the technologies most likely to realize industrializ...

AI Technical Summary

Problems solved by technology

The current cyclone electrochemistry is mainly used for cyclone electrolysis. In order to improve the treatment effect of landfill leachate, a multi-stage electrochemical process is often required, but this will also cause disadvantages such as large space occupation, large investment, and low electrode utilization efficiency.

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