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Biological membrane-activated sludge composite membrane bioreactor for denitrification and water treatment method using same

A bioreactor and activated sludge technology, applied in the field of water treatment, can solve the problems of affecting the mass transfer of the medium, affecting the effect of denitrification, and increasing operating costs, so as to enhance the mass transfer efficiency, avoid short circuits, and reduce land occupation. area effect

Active Publication Date: 2012-07-11
广州宏诚检测有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sludge medium mainly enters into the biofilm on the fixed filler by free diffusion. Due to the thick biofilm, it affects the mass transfer of the medium and affects the effect of denitrification.
And because of the MBR process, the operating cost increases

Method used

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  • Biological membrane-activated sludge composite membrane bioreactor for denitrification and water treatment method using same
  • Biological membrane-activated sludge composite membrane bioreactor for denitrification and water treatment method using same
  • Biological membrane-activated sludge composite membrane bioreactor for denitrification and water treatment method using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The schematic diagram of the device in this embodiment is figure 1 with figure 2 As shown, figure 1 In the middle, the solid arrow indicates the direction of the suspended sludge flow in the reaction tank, and the hollow arrow indicates the direction of the membrane outlet. figure 2 In the middle, the arrow indicates the direction of the membrane.

[0039] The reaction tank 10 has an effective volume of 16L and is made of organic glass. The internal length is 29cm, the internal width is 19cm, and the liquid level is 30cm high. 5 membrane modules 6 are placed in balance inside, the membrane modules are 19cm long, 1.5cm wide, and 26cm high. The distance between the membrane modules is 4cm. The water inlet pump 2 is controlled by a level gauge 13. There are two microporous aeration pipes on both sides of the reaction tank, and the aeration volume is 10-15m 3 / h. The water outlet is continuous water with a flow rate of 1.5L / h. 800mL of sludge is discharged regularly eve...

Embodiment 2

[0041] The composite membrane bioreactor constructed in Example 1 was used to investigate the coupling effect between suspended activated sludge and biofilm. Under the same conditions, the batch test of suspended activated sludge, biofilm and biofilm nitrification and denitrification under the action of suction and reflux were carried out. The experimental results are shown in Table 1.

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Abstract

The invention discloses a biological membrane-activated sludge composite membrane bioreactor. The composite membrane bioreactor utilizes non-woven fabric as a biological membrane carrier and a filter medium to perform coupling action with suspended sludge, thus finally achieving the purpose of high-efficient denitrification. The composite membrane bioreactor comprises a water inlet pipeline communicated with a reaction tank, a water outlet pipeline and a sludge discharge pipeline, wherein a plurality of membrane components and microporous aeration pipes are arranged in the reaction tank. Each membrane component consists of a support plate and non-woven fabric and is connected with a water outlet pump, and the membrane components consisting of the non-woven fabric can play functions of both the biological membrane carrier and the membrane filter. The composite membrane bioreactor disclosed by the invention can not only remove organic matters and nitrogen in sewage with high efficiency, but also realize high mass transfer efficiency, and further has the advantages of compact process structure, capability of saving the adding amount of alkalinity, capability of saving operation cost and the like.

Description

Technical field [0001] The invention belongs to the technical field of water treatment, and relates to a biofilm bioreactor, in particular to a biofilm-activated sludge composite that uses non-woven fabric as a biofilm carrier and filter medium and couples with suspended sludge Membrane bioreactor and its water treatment method. Background technique [0002] Urban domestic sewage is different from industrial sewage, mainly excrement and washing sewage, and its output is related to the production level. The domestic sewage contains a large amount of organic matter, such as cellulose, starch, sugar and fat protein. The main feature is the high content of organic matter, nitrogen and phosphorus. If it is directly discharged into the water body without treatment, the algae in the lake will multiply and cause The eutrophication of the water body directly leads to the deterioration of water quality, the death of fish and shrimp in large numbers, and the serious ecological disaster. S...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F3/12
CPCY02W10/10
Inventor 孟凡刚王源李适宇周忠波
Owner 广州宏诚检测有限公司
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