Waste leachate-based high-efficiency nitrogen and carbon removing anaerobic reaction device and method

Abstract

The invention discloses a waste leachate-based high-efficiency nitrogen and carbon removing anaerobic reaction device, and belongs to the field of wastewater treatment. The waste leachate-based high-efficiency nitrogen and carbon removing anaerobic reaction device comprises a reactor, wherein a gas-liquid-solid separation zone, a biofilm zone, an upflow sludge zone, an elastic packing zone, a sludge expanding zone, a ceramic ball filter material zone and a sludge bed zone are sequentially arranged inside the reactor from top to bottom; the gas-liquid-solid separation zone is provided with a water outlet and a gas outlet; the sludge bed zone is provided with a water inlet; each of the biofilm zone, the elastic packing zone and the ceramic ball filter material zone is provided with a cabin door; each of the gas-liquid-solid separation zone, the upflow sludge zone, the sludge expanding zone and the sludge bed zone is provided with a sludge outlet. The waste leachate-based high-efficiencynitrogen and carbon removing anaerobic reaction device is simple in structure and low in running cost; the problems that the existing reactor has low efficiency of nitrogen and carbon removal from thewaste leachate, water discharge is unstable, a pipeline is easily blocked and the like are solved.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and relates to a high-efficiency denitrification and carbon removal anaerobic reaction device and method based on landfill leachate. Background technique [0002] Landfill leachate is a kind of harmful high-concentration organic wastewater produced by microbial decomposition, rainwater leaching, and long-term immersion in surface water and groundwater during the anaerobic stacking of municipal solid waste in landfills. In recent years, with the improvement of people's living standards, the amount of domestic waste has also increased, resulting in a rapid increase in the amount of landfill leachate; as people pay more attention to environmental issues, research on landfill leachate treatment has become more and more popular. Landfill leachate contains a wide variety of organic pollutants and heavy metal pollutants, which seriously endanger the ecological environment and people's phys...

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Problems solved by technology

[0004] In view of this, in view of the hazardous characteristics of landfill leachate, it is necessary to design an integrated anaerobic device capable of both denitrification and carbon removal; Carbon removal anaerobic reaction device and method, the first problem to be solved in the design of the reaction device is to effectively control the pH and residence time in the tank, the circulation of landfill leachate in the tank, and improve the efficiency of dosing, sampling and replacement of fillers. At the same time, it has the advantages of simple structure, convenient processing, low operating cost, safety and reliability, etc. It solves the problems of difficult sludge discharge in existing reaction devices, easy blockage of pipelines, and high energy consumption, and provides a solid foundation for the discharge of landfill leachate up to the standard. application basis

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