Refuse leachate ammonia nitrogen handling arrangement

Abstract

The invention relates to a refuse treatment equipment, specifically to a refuse leachate ammonia nitrogen handling arrangement based on membrane bioreactor. The provided refuse leachate ammonia nitrogen handling arrangement based on membrane bioreactor is provided with a reaction tank, a supporting plate, a composite membrane-cloth bag component, cloth water pipe, cloth gas tube, a mud dischargingchamber and a mud valve, wherein, the supporting plate is located below the reaction tank, the composite membrane-cloth bag component is located on the supporting plate, the composite membrane-clothbag component is provided with a non-woven cloth bag and a guide plate, the non-woven bag is stuffed with oyster shell particles, diaphragms are provided respectively on both sides of the non-woven cloth bag, the guide plate is arranged at the outside of the diaphragm; the cloth gas tube is located above the supporting plate and below the supporting plate, the cloth gas tube is connected to an aerator which loads air in the cloth gas tube; the cloth water pipe is located below the supporting plate, and the cloth water pipe is in external connection to a water inlet pipe; the mud valve is located at the bottom of the mud discharging chamber.

Description

technical field [0001] The invention relates to a garbage treatment device, in particular to an ammonia nitrogen treatment device for garbage leachate based on a membrane bioreactor (Membrance bioreactor, referred to as MBR). Background technique [0002] The leachate discharged from urban waste landfills contains high concentrations of ammonia nitrogen. Because the high concentration of ammonia nitrogen has an inhibitory effect on microorganisms, it seriously affects the normal operation of the leachate biochemical treatment system, and directly causes the treated effluent to fail to meet the standard. Therefore, the landfill leachate Ammonia nitrogen biological removal technology has become a research hotspot in the field of environmental protection. [0003] Ammonia nitrogen treatment methods can be divided into physical and chemical methods and biochemical combined methods. At present, the commonly used ammonia nitrogen physicochemical control technologies mainly includ...

AI Technical Summary

Problems solved by technology

[0007] Because the nitrification reaction needs to consume a large amount of alkalinity, when the ammonia nitrogen load in the sewage is too high, the insufficient alkalinity will cause the pH value of the nitrification sludge mixture in the device to drop below 6.5, which deviates from the suitable pH value for the growth and metabolism of nitrifying bacteria, and the performance Because the nitrification activity decreases, the nitrification reaction rate decreases

At present, the way to supplement alkalinity is mainly to add NaHCO 3 or NaOH, which undoubtedly increases the difficulty of operating costs and management

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