Landfill leachate wastewater treatment system and process thereof

Abstract

The invention relates to a landfill leachate wastewater treatment system and a process thereof. The system comprises a collecting well, an adjusting tank, a filter, a multi-stage anoxia / aerobic pool and membrane bioreactor comprehensive treatment system, an advanced catalytic oxidization tower and a biological carbon filter. The treatment process has the following flows that: wastewater enters the adjusting tank to undergo the adjustment of water quality and water quantity in the adjusting tank; then, the wastewater enters the filter, the water out of the filter enters the multi-stage anoxia / aerobic pool and membrane bioreactor comprehensive treatment system to undergo biochemical treatment in the system, organic matters and ammonia nitrogen are removed, and the water out of the system enters the catalytic oxidization tower; in the presence of a catalyst, organic matters in the wastewater are oxidized by ozone, and the biodegradability is improved; and the water after catalytic oxidization enters the carbon filter, residual pollutants are further removed through cooperation of the aerobic oxidative degradation of a biomembrane on a filling material in the filter and the absorption of active carbon, and then the water out of the carbon filter can meet the national first grade emission standard or the emission standards of related industries.

Description

technical field [0001] The invention relates to a landfill leachate wastewater treatment system and a process thereof, which are used for treating landfill leachate waste water and other high-ammonia-nitrogen organic waste water, and belong to the technical field of environmental protection and waste water treatment devices and processes. Background technique [0002] Landfills and waste incineration power plants will produce a large amount of landfill leachate wastewater, which has high BOD and COD concentrations and high ammonia nitrogen content, making it a major difficulty in the wastewater treatment industry. The prominent problem of landfill leachate treatment is the degradation of refractory organic matter and high ammonia nitrogen. At home and abroad, physical methods, physicochemical methods, and biochemical methods are commonly used to treat this type of wastewater, but they are difficult to promote because of the difficulty in degrading organic matter, high treatm...

AI Technical Summary

Problems solved by technology

At home and abroad, physical methods, physicochemical methods and biochemical methods are commonly used to treat this type of wastewater, but they are difficult to promote because of the difficulty of degrading organic matter, high treatment costs, poor denitrification effect and easy to cause secondary pollution.

On the other hand, with the improvement of people's living standards and the continuous improvement of national environmental protection standards, it is difficult to meet the current effluent requirements with conventional wastewater treatment processes.

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