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Swirl stirring device for wastewater biological treatment anaerobic (anoxic) tank

A technology for biological sewage treatment and stirring device, applied in the field of stirring device, can solve the problems of high energy consumption, sludge deposition, etc., and achieve the effects of energy saving, easy operation and high efficiency

Inactive Publication Date: 2010-06-09
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the existing problems of sludge accumulation and high energy consumption in the anoxic (anaerobic) zone, the present invention provides a swirl stirring device, which adopts axial stirring, and the energy input is transmitted from the circumference of the pool to the center, so that each The regional energy input is relatively balanced, and finally ensures the uniform swirling of the mixed liquid with the lowest energy consumption and overcomes the phenomenon of sludge deposition

Method used

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  • Swirl stirring device for wastewater biological treatment anaerobic (anoxic) tank
  • Swirl stirring device for wastewater biological treatment anaerobic (anoxic) tank
  • Swirl stirring device for wastewater biological treatment anaerobic (anoxic) tank

Examples

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Effect test

Embodiment 1

[0020] The treatment process of an urban sewage treatment biological phosphorus removal pilot plant is an anaerobic / aerobic combined process. The anaerobic reaction pool has a water depth of 1.0 meters, a length of 1.4 meters and a width of 0.8 meters. When the horizontal flow rate is 0.01 m / s, a large amount of sediment is formed in the anaerobic tank, and the mixing performance of the sludge is extremely poor, and the corresponding biological reaction cannot be completed. Implement the low-energy swirl stirring device of the present invention in the anaerobic pond, with reference to figure 1 and figure 2 .

[0021] The swirl stirring device is mainly composed of a horizontal shaft 10 , a stirring blade support 11 , a stirring blade 12 and a motor 13 . The horizontal shaft 10 is fixed to the shaft of the motor 13, and the horizontal shaft 10 is fixed with two sets of stirring paddle brackets 11, and each set of stirring paddle brackets 11 is symmetrically equipped with tw...

Embodiment 2

[0025] The treatment process of an urban sewage treatment biological denitrification pilot plant is an anoxic / aerobic combined process. Anoxic pool adopts stirring device of the present invention, with reference to figure 1 and figure 2 . The water depth of the anoxic pool reaction pool is 1.0 meters, the blade width is 0.08 meters, and the outer edge of the blades is 0.3 meters away from the water surface. Other parts of device installation are the same as embodiment 1.

[0026] Incoming water 1 flows into the stirring reaction zone of the anoxic tank evenly at a horizontal flow rate of 0.02 m / s along the horizontal direction of the reaction tank body. When the shaft speed is 8 rpm, the maximum speed of the liquid flow rotating body is 0.3 m / s. Under this condition, there is no sludge sedimentation in the anoxic pool, the mixing is uniform, and the oxidation-reduction potential in the pool can be maintained at -50mV, and a good anoxic effect is obtained.

Embodiment 3

[0028] The treatment process of a pilot plant for biological denitrification and phosphorus removal of urban sewage treatment is an anaerobic / anoxic / aerobic combined process. The anaerobic tank and the anoxic tank are connected in two stages. Single motor coaxial drive, refer to image 3 .

[0029] The water depth of the anaerobic pool and the anoxic pool are both 2.5 meters, and a swirl stirring device is installed respectively, driven by a single motor coaxially. The swirl stirring device is mainly composed of a horizontal shaft 10 , a stirring blade support 11 , a stirring blade 12 and a motor 13 . The horizontal shaft 10 is fixed with the motor 13 shafts. Three groups of stirring paddle supports 11 are fixed on the horizontal shaft 10 of each swirling flow stirring device, and two stirring paddles 12 are symmetrically installed on each group of stirring paddle supports 11; 0.3 meters.

[0030] The anaerobic pool 6 and the anoxic pool 15 are made of steel plates, separa...

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Abstract

The invention discloses a swirl stirring device for a wastewater biological treatment anaerobic (anoxic) tank, and the swirl stirring device mainly consists of a horizontal shaft (10), a support of a stirring paddle (11), stirring blades (12) and a motor (13). The support of the stirring paddle (11) is fixedly arranged on the horizontal shaft (10), and the stirring blades (12) are arranged on the support of the stirring paddle (11); a reaction tank body (6) is divided into a water distribution area (2), a stirring reaction area (3) and a water collection area (4); and the swirl stirring device is horizontally fixedly mounted in the stirring reaction area (3) of the anaerobic (anoxic) reaction tank body (6) along the water flow direction. The stirring device adopts the axial stirring and can lead liquid flow to form a rotator in the reaction tank, lead energy input to be transmitted to the center from the circumference of the tank, further lead the energy input in all areas to be relatively balanced, ensure the uniform swirl of mixed solution by lowest energy consumption, overcome the phenomenon of sludge accumulation and save energy. The stirring device has simple structure, convenient installation and convenient operation.

Description

Technical field [0001] The invention relates to a stirring device which can ensure that the liquid is in a swirl state under the condition of minimum energy input and prevent the sedimentation of particles in the liquid and its matching pool type, and is suitable for use in anaerobic pools and anoxic pools for sewage biological treatment. Background technique [0002] In the sewage biological nitrogen and phosphorus removal system, the setting of anaerobic pond and anoxic pond is essential. In order to keep the mixed solution in the anoxic (anaerobic) tank in a suspended state, ensure the full contact between the sludge in the mixed solution and the pollutants, and successfully complete the required biological denitrification and phosphorus removal reactions, at present, propeller mixers are installed. way to solve. The energy required by the mixer is generally determined by the amount of waste water per unit volume, and the mixer is arranged and installed in a point-by-poi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28
Inventor 彭党聪万琼房平王怡
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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