Landfill leachate treatment device

Abstract

Aiming at the deficiencies that a concentrate is in large quantity, occupation space is large and secondary pollution to the environment is caused when wastewater is treated by a wastewater treatment device in the prior art, the invention provides a landfill leachate treatment device including a landfill leachate concentration device, a landfill leachate concentrate box and a concentrate drying device; landfill leachate collected by the concentrate box enters the landfill leachate concentration device and is concentrated, a generated concentrate returns back into the concentrate box, and a concentrate reaching a set concentration enters the concentrate drying device through a concentrate discharge port; the received concentrate is dried by the concentrate drying device, and residues obtained from drying is discharged by the concentrate drying device. With adopting of the structure, firstly, the landfill leachate is subjected to concentration treatment by the landfill leachate concentration device, then the concentrate is subjected to drying treatment by the concentrate drying device, and finally, clear water which is up to standard to be discharged and solid mud residues which can be landfilled are obtained.

Description

Technical field [0001] The invention belongs to the field of sewage or waste water treatment, in particular to a landfill leachate treatment device. [0002] Background technique [0003] Landfill leachate is the most complex and therefore most difficult type of wastewater in the field of sewage treatment. The water quality of landfill leachate has the following characteristics: the water quality is complex, containing not only oxygen-consuming organic pollutants, but also various metals and plants Nutrients; COD Cr and BOD 5 The concentration can be as high as tens of thousands of milligrams per liter; there are many aromatic and aniline compounds that are difficult to biodegrade; it contains more than ten kinds of metal ions, which have a toxic and inhibitory effect on microorganisms; the water quality and quantity are unstable and vary greatly with time and seasons; seepage After the filtrate is processed, a large amount of concentrate is often not properly disposed of...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to deal with sewage and waste water in prior art sewage, waste water treatment device and process high treatment cost, large amount of concentrated solution, large space occupation, secondary pollution to the environment; or high ammonia nitrogen content in the effluent after treatment Insufficient, provide a landfill leachate treatment device that can not only obtain standard effluent, but also solve the technical problem of a large amount of waste concentrate

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