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Three-phase fluidized-bed reactor

A three-phase fluidized bed and reaction equipment technology, applied in the field of three-phase fluidized bed reaction equipment, can solve the problems of poor gas-water mixing effect, poor solid-liquid separation effect, unsatisfactory treatment effect, etc., and achieve low turbidity of effluent. , The effluent quality is good, and the gas-water mixing effect is good.

Inactive Publication Date: 2010-06-16
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problems mainly solved by the present invention are: the gas-water mixing effect of the internal circulation three-phase fluidized bed reaction equipment is poor, the equipment operation is difficult, the solid-liquid separation effect is poor, the treatment effect is not ideal, and the effluent turbidity is high

Method used

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Examples

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Effect test

Embodiment 1

[0021] A kind of three-phase fluidized bed reaction equipment, it comprises gas-water mixing zone (3), reaction zone (7), separation zone (11), filtering zone (14); Gas-water mixing zone (3) is placed at this equipment most The lower part is provided with a water inlet (1) and an air inlet (2) at the bottom of the side; the reaction zone (7) is composed of an outer cylinder (8) and an inner cylinder (9 1 ) form; the gas-water mixing zone (3) communicates with the reaction zone (7) through the microporous gas distribution plate (4); the separation zone (11) is located at the top of the equipment, and the separation zone (11) is provided with an annular precipitation zone (13) and filtering area (14), both are connected by perforated plate (12); Filtering area (14) middle part is provided with filtering assembly (15), and filtering assembly (15) is connected with by water pump (18), valve (17) 1 ), valves (17 2 ), valves (17 3 ), valves (17 4 ), flowmeter (16 1 ), flowmeter ...

Embodiment 2

[0028] The structure and treatment process of a three-phase fluidized bed reaction equipment are the same as in Example 1. Wherein the air-water mixing zone (3) has a cylindrical height-to-diameter ratio of 2:1, and the gas-water mixing zone (3) and the inner cylinder (9 1 ) area ratio is 1: 5, the area ratio of inner and outer cylinders is 1: 5, the height-diameter ratio of the reaction zone (7) is 12, and the filter assembly adopts a ceramic membrane, and its effect is the same as that of Example 1.

Embodiment 3

[0030] The structure and treatment process of a three-phase fluidized bed reaction equipment are the same as in Example 1. Wherein the air-water mixing zone (3) has a cylindrical height-to-diameter ratio of 1.5:1, and the gas-water mixing zone (3) and the inner cylinder (9 1 ) area ratio is 1: 3, the area ratio of inner and outer cylinders is 1: 3, the height-diameter ratio of the reaction zone (7) is 8, and the filter assembly adopts a ceramic membrane, and its effect is the same as that of Example 1.

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Abstract

The invention discloses a three-phase fluidized-bed reactor. The three-phase fluidized-bed reactor solves the technical problems of poor gas-water mixing, difficult operation, undesirable solid-liquid separating effect and high effluent turbidity of an internal circulating three-phase fluidized-bed reactor. The three-phase fluidized-bed reactor comprises a gas-water mixing area, a reacting area, separating area and a filtrating area; the gas-water mixing area is, through a micro-porous gas distributor, communicated with the reacting area which is formed by an outer barrel and an inner barrel; a precipitating area and the filtrating area are formed outside the separating area on the top and communicated with each other through a perforated plate; the filtrating area is provided with a filtering component; and the filtrating component is connected with a water outlet and back wash system which comprises a water pump, a plurality of valves, a plurality of flowmeters and the like. The three-phase fluidized-bed reactor is characterized in that: the gas-water mixing area is shaped as a column; and the filtering component is a film component. The three-phase fluidized-bed reactor is used for treating the domestic sewage and the industrial effluent, so the municipal sewage is recycled to meet the municipal non-drinking water quality standards.

Description

technical field [0001] The invention relates to the technical field of environmental protection and biochemical reaction equipment, in particular to a three-phase fluidized bed reaction equipment used for domestic sewage and industrial wastewater treatment. Background technique [0002] The biological treatment method has become the mainstream method of sewage treatment at present, mainly because the biological method has low investment in infrastructure, low operating cost and easy operation. Microbes degrade pollutants through assimilation and dissimilation in the reactor and realize their own proliferation. After removing organic matter in sewage through solid-liquid separation, organic matter, nitrogen, phosphorus and other pollutants can be removed. Three-phase fluidized bed reactor is one of the most commonly used biochemical reactors. Compared with the traditional process, the three-phase fluidized bed reactor has higher treatment efficiency, lower operating costs an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/22C02F3/08
CPCY02W10/10
Inventor 卢永严莲荷申世峰周申范傅佳骏张建法
Owner NANJING UNIV OF SCI & TECH
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