System and method for total volume treatment of landfill leachate and use thereof

Pending Publication Date: 2022-04-28
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0043]For all the above technical solutions, the present disclosure has the advantages and positive effects as follows: in the present disclosure, the integrated device of dielectric barrier discharge combined with catalyst treatment could effectively decompose organic pollutants which are difficult to biodegrade in the landfill leachate without negative effects from factors such as water quality and water quantity, thereby improving the biodegradability of the landfill leachate; the SBR-MBR biochemical treatment dev

Problems solved by technology

In addition, most landfill leachate contains a variety of heavy metal ions, a serious imbalanced microbial nutrition such as C, N and P, and has a poor biodegradability, great changes in water quality, a dark color and a foul smell.
These characteristics make the treatment of landfill leachate a very difficult problem.
However, this process has a fatal defect in technology, i.e., its effluent rate is less than 75%, and it will produce more than 25% concentrated wastewater, which is a wastewater with a much higher salt content, chroma, ammonia nitrogen content, total nitrogen content and COD, and is much more difficult to treat.
In view of the concentrated wastewater produced by “double membrane” treatment, some recharge the concentrated solution to the landfill site, and thus the pollutants will return to the landfill leachate, but with the continuous accumulation of pollutants, the system will eventually collapse; some adopt evaporation and crystallization process, but its investment and operation cost are too high, which is not feasible in practical implement.
In addition, the “double membrane” treatment still has some disadvantages, such as membrane pollution, blockage, complex in operation and management, large in investment, high in operation cost.
It can be seen from the above analysis that the existing problems and defects in the prior art are as follows: the effluent rate of “double membrane” tr

Method used

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Example

[0051]In the figures, 1 represents an integrated device of dielectric barrier discharge combined with catalyst treatment; 101 represents a reaction tank; 101-1 represents a reaction tank body; 101-2 represents a reaction tank flange; 101-3 represents a flange silica gel pad; 101-4 represents a reaction tank base; 101-5 represents a water inlet; 101-6 represents a water outlet; 102 represents a discharge-catalysis reactor; 102-1-1 represents a coaxial stainless steel round pipe; 102-1-2 represents a stainless steel fixing frame flange; 102-1-3 represents a water discharge hole; 102-2 represents a discharge tube; 102-3 represents a dielectric tube; 102-4 represents an upper fixing plate; 102-5 represents a lower fixing plate; 102-6 represents an upper fixing plate gas hole; 102-7 represents a lower fixing plate gas hole; 102-8 represents an inlet gas chamber top cover; 102-9 represents an inlet gas chamber; 102-10 represents an inlet gas chamber top cover gas hole; 102-11 represents an o

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Abstract

The present disclosure belongs to the technical field of treating landfill leachate, and in particular to a system and a method for total volume treatment of landfill leachate, and a use thereof. The system comprises an integrated device of dielectric barrier discharge combined with catalyst treatment, an SBR-MBR biochemical treatment device and a PLC control device; the integrated device for a discharge barriered by dielectric and a catalysis treatment is communicated with the SBR-MBR biochemical treatment device through a water transport pipeline, and the PLC control device is respectively connected with the integrated device for a discharge barriered by dielectric and a catalysis treatment and the SBR-MBR biochemical treatment device through connecting lines.

Description

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Claims

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Application Information

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Owner NORTHWEST A & F UNIV
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