Enhanced denitrification method and device

A denitrification and synergist technology, applied in chemical instruments and methods, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve the problems of high cost and insufficient utilization of additional carbon sources, and reduce oxidation Reduction potential, the effect of promoting denitrification process and enhancing denitrification efficiency

Active Publication Date: 2022-07-08
SUN YAT SEN UNIV
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  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a solution that can solve the problem of low carbon-nitrogen ratio of influent, insufficient utilization of additional carbon source, and low cost. High problem, and can effectively combine carbon source hydrolysis fermentation and denitrification process to strengthen the denitrification method and its device

Method used

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  • Enhanced denitrification method and device
  • Enhanced denitrification method and device
  • Enhanced denitrification method and device

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Embodiment

[0045] A kind of strengthening denitrification method of the present embodiment, the device used is such as image 3 The shown device includes a water inlet tank 1, an anoxic tank 3, an aerobic tank 5, a carbon source booster 15, and an additional carbon source tank 18; the water inlet tank 1 and the anoxic tank 3 are connected, and the connection between the two An inlet pump 2 is provided on the pipeline, the output end of the anoxic pool 3 is connected with the aerobic pool 5, the lower output end of the aerobic pool 5 is connected with the carbon source multiplier 15, and a return pump 14 is provided on the connecting pipeline of the two. , the carbon source pot 18 is connected with the lower end side of the carbon source multiplier 15, the connecting pipeline is provided with a peristaltic pump 16 and a time relay 17, and the upper end of the carbon source multiplier 15 is connected with the hypoxia tank 3 through the connecting pipeline ; Comprise agitator 4 in the descr...

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Abstract

The invention discloses an enhanced denitrification method and device, and belongs to the technical field of wastewater treatment. The enhanced denitrification device comprises an anoxic tank, an aerobic tank and a carbon source multiplier which are connected in sequence, and the output end of the carbon source multiplier is connected with the anoxic tank; a plurality of membrane contactors are fixed in the carbon source multiplier, the membrane contactors are of hollow structures, and gaps exist between the membrane contactors and a shell of the carbon source multiplier; when the device disclosed by the invention is used for denitrification, a macromolecular carbon source can be added in the denitrification process, the macromolecular carbon source is hydrolyzed into volatile fatty acid by utilizing hydrolysis zymophyte existing in a gap between the carbon source multiplier and the membrane contactor, and then the volatile fatty acid is diffused and permeated into a hollow structure of the membrane contactor through the membrane; as a small molecular carbon source which can be efficiently utilized by denitrifying bacteria, the denitrification process is promoted.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a method and a device for strengthening denitrification. Background technique [0002] In recent years, the restrictions on sewage standards have become increasingly strict, especially for total nitrogen discharge requirements; in the past two decades, many new biological denitrification technologies have been developed at home and abroad, such as simultaneous nitrification and denitrification, short-range nitrification and denitrification, anaerobic ammonia However, the traditional nitrification and denitrification process is still the most widely used process, which includes two steps of nitrification and denitrification. The removal efficiency of nitrogen in sewage depends to a large extent on the ratio of carbon to nitrogen in sewage, and the ratio of low carbon to nitrogen is a typical feature of municipal sewage in my country. Even lower than 100mg / ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F101/16
CPCC02F3/30C02F2101/16C02F2203/006Y02W10/10
Inventor 孟凡刚傅悦徐荣华
Owner SUN YAT SEN UNIV
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