Aeration system for landfill leachate wastewater

Abstract

The invention discloses an aeration system for landfill leachate wastewater, and belongs to the technical field of water treatment. Key points of the technical scheme of the invention are as follows:according to the aeration system for the landfill leachate wastewater, the aeration system is provided with a circulating liquid reflux device, an aeration fan and a gas-water jet device, so that sufficient mixing turbulence of the landfill leachate wastewater is realized, and large air bubbles are cut into small air bubbles through a jet device and cutting of circulating liquid, so that absorption and utilization of microorganisms are facilitated; and according to the mixed aerator, a plurality of parts are alternately connected in an internal and external overlapping manner, so that rotary mixing plug flow and turbulent flow reaction of fluid and air are realized, sufficient air supply and oxygenation are carried out in the reaction tank, available oxygen power is supplied to microorganisms, and effective degradation of pollutants in water is realized. The mixed aerator can effectively prevent pollution and blockage, avoids the overload of the aeration fan, and reduces the maintenance intensity of equipment.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an aeration system for landfill leachate wastewater. Background technique [0002] Landfill leachate is a black or yellowish-brown liquid with a foul smell. The leachate contains a large amount of organic and inorganic substances, including various refractory organic substances (such as various aromatic compounds and humus, etc.), inorganic salts and metals. ion. Due to the complex composition of garbage, one of the characteristics of landfill leachate water quality is high pollutant content, including high COD, high ammonia nitrogen, high suspended solids concentration, etc. The treatment of leachate has always been a very difficult problem in the field of sewage purification. [0003] For landfill leachate wastewater, biological treatment methods are mostly used at this stage. In the stage of aerobic biological treatment, such as microporous tube membrane a...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: the purpose is to provide an aeration system for landfill leachate wastewater, thereby solving the current biological treatment method, in the aerobic biological treatment stage, such as microporous tube membrane aeration or mesopore perforation Tube aeration system, often because the aerator is easily blocked by pollution, resulting in insufficient oxygen supply, low DO dissolved oxygen, resulting in insufficient degradation of pollutants, and easy to cause overload failure of the fan that provides the air source; and once the aerator is blocked, It can only be stopped for maintenance, which increases the instability of the aeration system or the operation of the reaction tank

Images