Device and method for deep denitrification of landfill leachate based on high dissolved oxygen operation and coupling of enhanced short-cut nitrification and anaerobic ammonia oxidation

Abstract

The invention relates to a device and a method for deep denitrification of landfill leachate based on high dissolved oxygen operation and coupling of enhanced short-cut nitrification and anaerobic ammonia oxidation, and belongs to the technical field of biological denitrification of low-carbon-nitrogen-ratio high-ammonia-nitrogen wastewater. The method comprises the following steps: feeding water into an integrated rotary drum filler SBR, performing high-oxygen aeration on the integrated rotary drum filler SBR, and discharging water from the integrated rotary drum filler SBR. The device is used for deep and efficient denitrification treatment based on short-cut nitrification coupled anaerobic ammonia oxidation of landfill leachate generated by garbage classification, the process is advanced, the device structure is simple, the operation is simple, the attachment growth of ammonia oxidizing bacteria on the surface of the filler can be enhanced through the drum filler and high dissolved oxygen aeration operation, an aerobic biological membrane is formed, and the protection on anaerobic ammonium oxidation bacteria taking sponge filler as a carrier is enhanced, so that the system can operate in a high dissolved oxygen environment, and the denitrification efficiency is improved.

Description

technical field [0001] The invention relates to a device and method for deep denitrification of landfill leachate based on high dissolved oxygen operation and rotating biological filler carrier-enhanced short-range nitrification coupled with anaerobic ammonium oxidation, belonging to the technical field of biological denitrification of waste water with low carbon-to-nitrogen ratio and high ammonia-nitrogen, applicable High-efficiency biological denitrification process for high-ammonia nitrogen wastewater such as landfill leachate produced by garbage classification. Background technique [0002] In recent years, the process of urbanization has continued to advance, and the output of urban solid waste has continued to increase. Although the trend of waste classification has gradually emerged, waste classification and disposal will not reduce the moisture contained in the waste itself, and will still produce a large amount of landfill leachate. Landfill leachate has water quali...

AI Technical Summary

Problems solved by technology

However, due to the long doubling time and low proliferation efficiency of anammox bacteria, and in the process of coupling with short-cut nitrification, in order to adapt to the environment, lower dissolved oxygen is usually used, so the activity of short-cut nitrification cannot be fully exerted. It will also affect the function of anammox bacteria

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