Treatment device for concentrated landfill leachate

Abstract

The invention belongs to the technical field of sewage treatment equipment, and particularly relates to a treatment device for concentrated landfill leachate. The treatment device comprises a tank body, wherein the tank body is provided with an ultrasonic treatment tank and an electrochemical treatment tank; a liquid inlet pipe and a liquid outlet pipe are mounted on the tank body; an ultrasonic generator is mounted on the bottom surface of the ultrasonic treatment tank; a rotating shaft is mounted in the ultrasonic treatment tank; a pushing blade is mounted on the rotating shaft; the pushingblade is just over the outlet, in the ultrasonic treatment tank, of the liquid inlet pipe; a defoaming plate is mounted on the rotating shaft; polar plates are mounted in the electrochemical treatmenttank; and the polar plates are composed of a negative plate and a positive plate which are respectively communicated with the positive electrode and the negative electrode of a power supply. The device is simple in structure, convenient to use, good in treatment effect and high in treatment efficiency.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment equipment, in particular to a garbage leachate concentrate treatment device. Background technique [0002] As we all know, the most commonly used and most effective standard discharge treatment for landfill leachate is the "biochemical method (SBR / MBR) + membrane treatment (NF / RO)" process, but this process produces about 20-25% of landfill leachate during the treatment process. Filtrate Membrane Filtration Concentrate. The concentrate contains a large amount of aromatic compounds, chlorinated aromatic compounds, phosphate esters, phenols, and aniline pollutants that are difficult to biodegrade, and also contains a variety of endocrine disruptor substances, with complex components, high concentrations of pollutants, and high salt content , and has certain biological toxicity, poor biodegradability, and belongs to refractory organic wastewater. At present, compared with landfill leachate...

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Problems solved by technology

[0002] As we all know, the most commonly used and most effective standard discharge treatment for landfill leachate is the "biochemical method (SBR / MBR) + membrane treatment (NF / RO)" process, but this process produces about 20-25% of landfill leachate during the treatment process. Filtrate Membrane Filtration Concentrate

The concentrate contains a large amount of aromatic compounds, chlorinated aromatic compounds, phosphate esters, phenols, and aniline pollutants that are difficult to biodegrade, and also contains a variety of endocrine disruptor substances, with complex components, high concentrations of pollutants, and high salt content , and has certain biological toxicity, poor biodegradability, belongs to refractory organic wastewater

At present, compared with landfill leachate, the concentration of organic matter, ammonia nitrogen and total phosphorus in the concentrated solution is higher, the biodegradability is worse, and the treatment is more difficult. The existing treatment methods mainly use recharge to treat it, but this It will lead to the accumulation of heavy metals and refractory organic substances in the treatment process, which is not conducive to the long-term operation of the treatment process and the surrounding ecological environment

[0003] There are also some technical solutions in the prior art, such as the Chinese patent application number CN201721580836.9. The device consists of a water storage tank, a sedimentation tank, a micro-electrolysis reactor and a clear liquid tank. One side is connected, and the pipeline is provided with a liquid outlet valve, an infusion pump, a flocculant adding mechanism, a coagulant aid adding mechanism and a defoamer adding mechanism, and the other side of the sedimentation tank is connected with the micro-electrolysis reactor through a pipeline; but In this scheme, there is no stirring mechanism in the sedimentation tank, which leads to poor reaction and sedimentation effect, which is further detrimental to the long-term operation of the treatment process and affects the surrounding ecological environment.

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