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A biofilm-activated sludge composite membrane bioreactor for denitrification and its water treatment method

A bioreactor and domestic sewage 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, increasing operating costs, etc., to enhance the mass transfer efficiency, avoid short circuits, and reduce the floor space. Effect

Active Publication Date: 2014-10-22
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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  • A biofilm-activated sludge composite membrane bioreactor for denitrification and its water treatment method
  • A biofilm-activated sludge composite membrane bioreactor for denitrification and its water treatment method
  • A biofilm-activated sludge composite membrane bioreactor for denitrification and its water treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0039] The reaction pool 10 has an effective volume of 16L and is made of plexiglass. The inner length is 29cm, the inner width is 19cm, and the liquid level height is 30cm. 5 membrane modules 6 are balanced inside, the length of the membrane modules is 19cm, the width is 1.5cm, the height is 26cm, and the distance between the membrane modules is 4cm. The water inlet pump 2 is controlled by a liquid level gauge 13 . There are two microporous aeration tubes on both sides of the reaction tank, and the aeration volume is 10-15m 3 / h. The water outlet is continuous water outlet with a flow rate of 1.5L / h. 800mL of sludge is...

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 tests of nitrification and denitrification of suspended activated sludge, biofilm and biofilm under the action of suction and reflux were respectively 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 which utilizes non-woven fabric as a biofilm carrier and a filter medium, and is coupled 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. Domestic sewage contains a large amount of organic matter, such as cellulose, starch, sugar, and fat protein. The main feature is that the content of organic matter, nitrogen, and phosphorus is high. If it is directly discharged into the water body without treatment, the algae in the lake will multiply in large numbers, causing The eutrophication of the water body directly leads to the deterioration of the water quality, a large number of fish and shrimp deaths, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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