Technology for removing total nitrogen in garbage leachate by anammox and special device thereof

A technology of anaerobic ammonia oxidation and landfill leachate, which is applied to the process and special device for anaerobic ammonia oxidation to remove total nitrogen in landfill leachate, and the field of high-efficiency denitrification treatment of late landfill leachate, which can solve the problem of influent ammonia nitrogen and sub-nitrogen in landfill leachate. The ratio and content of nitrate nitrogen are unstable, containing dissolved oxygen, and the reaction system is unstable.

Pending Publication Date: 2017-05-17
SHANGHAI JINGYU ENVIRONMENT ENG
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Problems solved by technology

[0009] The purpose of the present invention is to provide anaerobic ammonium oxidation for the technical problems such as the ratio and content of influent ammonia nitrogen and nitrite nitrogen are unstable, the reaction system is unstable, and the influent contains dissolved ox

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  • Technology for removing total nitrogen in garbage leachate by anammox and special device thereof
  • Technology for removing total nitrogen in garbage leachate by anammox and special device thereof

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Embodiment

[0032] as attached figure 2 As shown, the special device for removing total nitrogen in landfill leachate by the above-mentioned anammox is characterized in that it includes a short-range nitrification-denitrification reactor 1, a mud-water separator 2, an intermediate water tank 3, and anammox reaction device 4;

[0033] The raw water tank 5 is connected with the short-range nitrification-denitrification reactor 1, and the first water inlet pump 6 and the control valve 7 are installed on the connecting pipeline, and the raw water tank 5 is connected with the intermediate water tank 3 at the same time, and the raw water tank 5 and the intermediate water tank 3 are connected on the pipeline Equipped with a control valve 7, the outlet end of the short-cut nitrification-denitrification reactor 1 is connected to the mud-water separator 2; the output end of the mud-water separator 2 is connected to the intermediate water tank 3; the output end of the intermediate water tank 3 is c...

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Abstract

A technology for removing total nitrogen in garbage leachate by anammox and a special device thereof are disclosed. The technology comprises the following steps: low dissolved oxygen concentration is strictly controlled in the nitration stage to oxidize ammonia nitrogen into nitrite nitrogen; in the denitrification stage, nitrite nitrogen is converted into nitrogen to escape so as to reduce total nitrogen in garbage leachate; then, an effluent undergoes mud-water separation, and wastewater is fully mixed with a few amount of garbage leachate stock solution in order to control the ratio of ammonia nitrogen to nitrite nitrogen in the wastewater and contents; simultaneously, nitrogen or carbon dioxide is supplemented in order to reduce dissolved oxygen in water and then provide favorable flow condition and strict anaerobic condition for follow-up anammox; and finally, a hydrophilic biological stuffing with large specific surface area is arranged in the anammox reactor to provide a stable growth environment for anammox bacteria so as to smoothly carry out anammox denitrification reaction. Therefore, total nitrogen of late landfill leachate reaches the emission standard, and energy is saved and consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of biological denitrification of waste water with low carbon-to-nitrogen ratio and high ammonia-nitrogen, and specifically relates to a process and a special device for removing total nitrogen in landfill leachate by anaerobic ammonium oxidation, and is especially suitable for high-efficiency denitrification of late-stage landfill leachate deal with. Background technique [0002] In recent years, with the continuous increase of urban waste production, landfill has gradually become the most widely used method of waste treatment and disposal at home and abroad. Landfill leachate has complex components, large changes in water quality and quantity, high concentrations of ammonia nitrogen and organic matter, and imbalanced ratios of microbial nutrients, making it difficult to treat. At present, the denitrification treatment of landfill leachate mainly adopts the traditional nitrification and denitrification deni...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F101/16C02F103/06
CPCC02F3/305C02F2101/16C02F2103/06
Inventor 夏俊方胡君杰方小琴周耀水韩粒肖龙博尚荣
Owner SHANGHAI JINGYU ENVIRONMENT ENG
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