A sbbr-sbr switching landfill leachate deep denitrification process

Abstract

The invention relates to the technical field of sewage treatment, in particular to a SBBR-SBR switching type landfill leachate deep denitrification process. This kind of SBBR‑SBR switching landfill leachate deep denitrification process, the treatment device used in the process includes SBR reactor, stuffing box placed in the SBR reactor, and a hoist for lifting the stuffing box out of the SBR reactor device and a clear water tank for storing the stuffing box after being hoisted out. A SBBR-SBR switchable landfill leachate deep denitrification process of the present invention can realize deep denitrification of landfill leachate without adding any carbon source, and the final effluent COD of landfill leachate after the process is 500 ~850mg / L, the removal rate is 85~90%, the effluent ammonia nitrogen is ≤5mg / L, the removal rate is ≥99%, the effluent total nitrogen is ≤40mg / L, the removal rate is ≥95%, and the sludge concentration is 5000~7000mg / L.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an SBBR-SBR switching type landfill leachate deep denitrification process. Background technique [0002] Traditional landfill leachate denitrification technologies mainly include A / O process, oxidation ditch and SBR. Although the A / O process has a separate anoxic zone for denitrification, the denitrification rate is relatively fast, but because it belongs to pre-denitrification, it is difficult to achieve a denitrification rate of more than 90%; the oxidation ditch process has no obvious nitrification zone and The denitrification area, so the nitrogen removal efficiency is not very high. The traditional SBR process generally adopts post-denitrification method to achieve deep denitrification of leachate, but it needs to add carbon source and the treatment cost is high. Contents of the invention [0003] The purpose of the present invention is to provide a SBBR-SBR swi...

AI Technical Summary

Problems solved by technology

Although the A / O process has a separate anoxic zone for denitrification, the denitrification rate is relatively fast, but because it belongs to pre-denitrification, it is difficult to achieve a denitrification rate of more than 90%; the oxidation ditch process has no obvious nitrification zone and Denitrification area, so the nitrogen removal efficiency is not very high

The traditional SBR process generally adopts post-denitrification method to achieve deep denitrification of leachate, but it needs to add carbon source and the treatment cost is high

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