Culture apparatus and method for complete autotrophic nitrogen removal granule sludge

A fully autotrophic denitrification and granular sludge technology, which is applied in the field of sewage biological treatment, can solve the problems of low denitrification efficiency, poor sludge settling performance and poor operation stability of the anaerobic ammonium oxidation denitrification method, and achieve the goal of reducing pollution. Mud output, improved stability, good impact resistance effect

Inactive Publication Date: 2015-04-01
HARBIN INST OF TECH
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Problems solved by technology

[0006] The present invention aims to solve the problem of the anaerobic ammonium oxidation denitrification method, which is caused by the small particle size of the floc sludge in the existing anaerobic ammonium oxidation-based autotrophic denitrification method, which leads to low sludge concentration and poor sludge settlement performance. Problems of low efficiency and poor operational stability

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  • Culture apparatus and method for complete autotrophic nitrogen removal granule sludge
  • Culture apparatus and method for complete autotrophic nitrogen removal granule sludge
  • Culture apparatus and method for complete autotrophic nitrogen removal granule sludge

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specific Embodiment approach 1

[0049] Specific implementation mode one: refer to figure 1 Specifically explain this embodiment, a kind of fully autotrophic denitrification granular sludge cultivation device described in this embodiment, the device includes a U-shaped reactor body 1, a heat preservation system 2, a water inlet system 3, a drainage system 4, an exposure Gas system 5, automatic control system 6 and parameter monitoring system 7;

[0050] The thermal insulation system 2 includes a thermal insulation layer 2-1 and a resistance wire 2-2;

[0051] Water inlet system 3 comprises the water inlet tank 3-1 that water is housed, the water inlet metering pump 3-2, the water inlet filter head 3-3, the acid inlet metering pump 3-4, the alkali inlet metering pump 3-5, is equipped with Acid storage bottle 3-6 and alkali storage bottle 3-7 are housed;

[0052] The drainage system 4 includes a drainage pipe 4-1, a solenoid valve 4-2 and a water outlet tank 4-3;

[0053] The aeration system 5 includes an ai...

specific Embodiment approach 2

[0066] Specific embodiment 2: This embodiment is a further description of a kind of fully autotrophic denitrification aerobic granular sludge cultivation device described in specific embodiment 1. In this embodiment,

[0067] The aspect ratio of the U-shaped reactor body 1 is 14:1.

[0068] Under the same aeration rate, the larger the height-to-diameter ratio, the faster the apparent rising speed of the gas, and the greater the shearing effect of the generated water flow, which is conducive to the formation of granular sludge.

specific Embodiment approach 3

[0069] Specific embodiment three: This embodiment is a further description of a kind of fully autotrophic denitrification aerobic granular sludge cultivation device described in specific embodiment one. In this embodiment,

[0070] The diaphragm aeration head adopts a disc type diaphragm microporous aeration head.

[0071] The air bubbles produced by the disc-type diaphragm microporous aeration head are fine and uniform, with strong lifting capacity and high oxygenation efficiency.

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Abstract

The invention discloses a culture apparatus and a method for complete autotrophic nitrogen removal granule sludge, relating to the technical field of biological sewage treatment, in particular to the treatment field of nitrogen pollution. The culture apparatus and the culture method are used for solving the problems that the anaerobic ammonia oxidation nitrogen removal method has low nitrogen removal efficiency and poor running stability due to low sludge concentration and poor sludge settling effect caused by small sludge flocculation particle size in the existing complete autotrophic nitrogen removal method based on anaerobic ammonia oxidation. The culture apparatus comprises a U-shaped reactor main body, a heat preservation system, a water inflowing system, a drainage system, an aerating system, an automatic control system and a parameter monitoring system. A situation that the whole culture process can be controlled and monitored intelligently is achieved by connection of all parts and setting of a culture environment, strong aeration is carried out firstly during culturing to enable the sludge to be granulated, and then anaerobic culture is performed on anaerobic ammonium oxidation bacteria to culture the complete autotrophic nitrogen removal granule sludge successfully. The culture apparatus and the culture method are suitable for the sewage treatment field.

Description

technical field [0001] The invention relates to the technical field of sewage biological treatment, in particular to the treatment technology of nitrogen pollution. Background technique [0002] With the increasingly serious nitrogen pollution and the continuous improvement of human society's environmental quality requirements, wastewater biological denitrification technology has attracted widespread attention from all over the world, and has become an important research direction for water pollution control. The traditional activated sludge method based on nitrification and denitrification plays a certain role in denitrification of sewage, but due to its shortcomings such as long process, large power consumption, high operating cost and weak impact load resistance, it does not meet the contemporary "sustainable Development", "energy saving and emission reduction" requirements, urgently seek to develop new high-efficiency sewage denitrification process. [0003] The whole a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
Inventor 李相昆储昭瑞祝梦婷
Owner HARBIN INST OF TECH
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