Device and method for biological denitrification of landfill leachate through SBR (Sequencing Batch Reactor) short-cut nitrification-SBBR anaerobic ammonia oxidation combined process

A technology of landfill leachate and anaerobic ammonium oxidation, which is applied in the field of biological denitrification of sewage, can solve the problems of high nitrate nitrogen, insufficient alkalinity, and difficult treatment, and achieve the effects of simple process, reduced output, and easy management

Active Publication Date: 2013-12-11
BEIJING UNIV OF TECH
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Problems solved by technology

[0006] The purpose of the present invention is to solve the above problems, providing a device and method for short-range nitrification-ANAMMOX biological denitrification of landfill leachate, to solve the problem that landfill leachate is difficult to handle due to high ammonia nitrogen and low C / N ratio, It also solves the problem of insufficient alkalinity when the landfill leachate realizes the full short-range and the high residual nitrate nitrogen in the effluent water treated by anaerobic ammonium oxidation, and improves the removal rate of TN

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  • Device and method for biological denitrification of landfill leachate through SBR (Sequencing Batch Reactor) short-cut nitrification-SBBR anaerobic ammonia oxidation combined process

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[0035] Below in conjunction with accompanying drawing and embodiment describe in detail the patent of the present invention:

[0036] The present invention provides devices such as figure 1 shown by the SBR SBNR (A), integrated water tank (B), and SBBR ANAMMOX (C) formed in series. Among them, the integrated water tank (B) is divided into landfill leachate raw water tank (25), SBR SBNR Outlet tank (27) and SBBR ANAMMOX Water outlet return flow box (21), volume is respectively 20L, 15L, 15L.

[0037] SBR SBNR (A) The inner diameter is 10 cm, the outer diameter is 11 cm, the height is 70 cm, and the effective volume is 5 L. SBBR ANAMMOX (C) Filled with sponge filler, the inner diameter is 13 cm, the outer diameter is 14 cm, the height is 45 cm, and the effective volume is 5.5 L. The specific steps of applying the process of the present invention to carry out landfill leachate treatment are as follows:

[0038] Taking late-stage leachate from a landfill in Beijing as th...

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Abstract

The invention provides a device and a method for biological denitrification of landfill leachate through SBR (Sequencing Batch Reactor) short-cut nitrification-SBBR anaerobic ammonia oxidation combined process (Sequencing Batch Biofilm Reactor), belongs to the technical field of biological denitrification, and is applicable to waste water with high ammonia nitrogen and a low carbon nitrogen ratio (C/N). The device provided by the invention is provided with SBR and SBBR. The SBR reactor is mainly used for a short-cut nitrification reaction, and hereinafter referred to as SBRSBNR; the SBBR reactor is mainly used for an anaerobic ammonia oxidation reaction, and hereinafter referred to as SBBRANAMMOX. The raw liquor of the leachate is mixed with SBBRANAMMOX effluent reflux at first and then fed into the SBRSBNR for denitrification; the raw liquor of the leachate can be diluted, and partial nitric nitrogen in water also can be removed by taking full advantage of the carbon source in the raw water. Next, the effluent of the SBRSBNR is further mixed with the raw liquor of the leachate, and fed into the SBBRANAMMOX for an anaerobic ammonia oxidation-denitrification synchronous denitrification reaction; consequently, synchronous removal of nitrogen and COD (Chemical Oxygen Demand) is realized. The system removal rate of COD is 91%, the removal rate of TN is greater than 97.5%, and the total nitrogen load of the SBBRANAMMOX is about 0.7 Kg TN/m<3>.

Description

technical field [0001] The invention belongs to the technical field of biological denitrification of sewage, and is suitable for treating waste water with high ammonia nitrogen concentration and low C / N such as late garbage leachate. Specifically, it has the following technical characteristics: (1) Through reflowing an appropriate amount of SBBR ANAMMOX Outlet to SBR SBNR In the process, the organic carbon source in the leachate is used for denitrification reaction, which removes the COD in the raw water while removing the residual nitrate nitrogen in the anammox reactor, and also provides a certain alkalinity for the nitrification reaction; (2) through dynamic (3) Realize anammox-denitrification synchronous reaction through biofilm system, and remove COD while denitrification. Background technique [0002] In recent years, with the acceleration of urban development in my country, the output of urban domestic waste has also continued to increase, and sanitary landfill has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 彭永臻肖寒刘牡刘甜甜王淑莹
Owner BEIJING UNIV OF TECH
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