Leachate lifting method and system

Abstract

The invention relates to the technical field of waste liquid treatment, and provides a leachate lifting method. The leachate lifting method comprises the following steps: arranging a second liquid level monitoring device in a leachate collecting tank, arranging a self-priming pump outside the leachate collecting tank, arranging a first liquid level monitoring device in the self-priming pump, arranging a water replenishing device outside the self-priming pump, and arranging a control device which is in communication connection with the first liquid level monitoring device, the second liquid level monitoring device, the self-priming pump and the water replenishing device; monitoring the water level of diversion water in the self-priming pump, and when the water level is lower than a preset lowest water level, allowing the control device to start the water replenishing device so as to replenish diversion water into the self-priming pump; and monitoring the liquid level of leachate in the leachate collecting tank, and when the liquid level is higher than a preset highest liquid level and the diversion water level in the self-priming pump is not lower than the lowest water level, allowing the control device to start the self-priming pump. By means of the leachate lifting method, whether water diversion is sufficient or not can be automatically detected before the self-priming pump is started, water diversion is automatically supplemented, and stable starting, stopping and running of the self-priming pump are guaranteed.

Description

technical field [0001] The invention relates to the technical field of waste liquid treatment, in particular to a leachate lifting method and a lifting system. Background technique [0002] The composition of leachate in waste incineration projects is complex and the concentration of pollutants is high. Unlike other sewage, leachate has higher requirements on lifting devices, such as corrosion resistance, operation stability, and ease of maintenance. At present, submersible leachate lifting devices are mainly used to lift the leachate between the trenches of waste incineration projects. A submersible sewage pump is installed in the leachate collection tank to lift the leachate to the leachate treatment station. The submersible sewage pump of this type of device needs to be soaked in the leachate for a long time, which is easy to corrode the inner and outer layer metal of the submersible sewage pump, and reduces the service life of the submersible sewage pump. Frequent maint...

AI Technical Summary

Problems solved by technology

However, the traditional self-priming pump has the problem of unstable startup. During use, the self-priming pump often fails to start the pump due to water loss. At this time, it is necessary to artificially inject water into the self-priming pump. There are flammable, explosive, poisonous and harmful gases in the lift pump room above the pool. Operators often enter the lift pump room to repair or maintain the self-priming pump, which is very dangerous, so the application of self-priming pumps in leachate lifting is limited.

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