Method for culturing aerobic granular sludge for treating biological nutrients in municipal sewage

A technology for aerobic granular sludge and urban sewage, applied in the direction of sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc. Problems such as long start-up time of sludge process

Inactive Publication Date: 2010-06-30
杨国靖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, relevant research reports show that the start-up time of the aerobic granular sludge process is generally long, at least 2 to 4 months, and s

Method used

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  • Method for culturing aerobic granular sludge for treating biological nutrients in municipal sewage
  • Method for culturing aerobic granular sludge for treating biological nutrients in municipal sewage
  • Method for culturing aerobic granular sludge for treating biological nutrients in municipal sewage

Examples

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Example Embodiment

[0022] Example 1:

[0023] Such as figure 1 As shown, a sequencing batch SBR reactor with a height-to-diameter ratio of 3-12 and a volume exchange rate of 80% is used. The main body of the reactor is a plexiglass cylinder with an effective height of 0.3-1.1m and an inner diameter of 0.09m. , The effective volume is 7L; a set of microporous aeration heads 4 are set at the bottom of the reactor, and the ACO electromagnetic air compressor 2 is used to supply air. The aeration volume is adjusted by the rotor flowmeter 3, and the reactor receives water through the water pump 9. The time of each stage of water, anaerobic stirring, aeration, precipitation, drainage, etc. is set according to the needs of the test, and is automatically controlled by the time controller 7; the inlet water is added through the reservoir 6; the function of the agitator 10 is to make particles The sludge is suspended in the anaerobic stage by stirring; after the sewage is treated, it is discharged into the dr...

Example Embodiment

[0031] Example 2

[0032] In this example, the aerobic granular sludge obtained in Example 1 is used as inoculated sludge. figure 1 The shown sequencing batch SBR reactor treats low-carbon source, high-concentration nitrogen and phosphorus wastewater, and investigates the simultaneous nitrogen and phosphorus removal ability of the aerobic granular sludge. The main body of the reactor is a plexiglass cylinder, the effective height of the cylinder is 1.1m, the inner diameter of the cylinder is 0.09m, and the effective volume is 7L; the bottom of the reactor is equipped with a set of microporous aeration heads 4, using ACO electromagnetic air compressor 2 The air supply and aeration volume are adjusted by the rotor flowmeter 3, and the reactor receives water through the water inlet pump 9. The time of each stage of water inlet, aeration, precipitation, drainage, etc. is set according to the needs of the test, and is automatically realized by the time controller 7. Control; the react...

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Abstract

The invention relates to a method for culturing aerobic granular sludge for treating biological nutrients in municipal sewage, which comprises two reaction stages: (1) flocculent activated sludge is added in a sequencing batch reactor (SBR) as seed sludge, the domestic sewage is fed in the SBR which automatically operates according to the mode of water inlet-aeration-hypoxia-secondary aeration-precipitation-drainage, activated carbon powder and Mg2+ are added in the domestic sewage in the fourth day or fifth day after culturing, 10-20 days are needed in the stage, and the aerobic granular sludge with organism-removing and synchronous denitrifying capability can be obtained after 30-60 cycles; and (2) the SBR automatically operates according to the mode of water inlet-anaerobic mixing-aeration-precipitation-drainage-standing, 10-15 days are needed in the stage, and the aerobic granular sludge with high-efficient and synchronous denitrifying phosphorus-removing capability can be obtained after 20-45 cycles. In the invention, the culture time of the synchronous denitrifying phosphorus-removing aerobic granular sludge is shortened to 20-35 days, while in the prior art, 60-120 days are required generally.

Description

technical field [0001] The invention belongs to the technical field of wastewater biological treatment, in particular to a method for rapid cultivation of aerobic granular sludge and the removal of biological nutrients. Background technique [0002] With the rapid development of my country's industrial and agricultural production and the improvement of people's living standards, the problem of water eutrophication caused by biological nutrients such as nitrogen, phosphorus and organic matter is becoming more and more serious. Therefore, the treatment of sewage not only needs to remove COD, but also To remove nitrogen and phosphorus, this requires the sewage treatment system to have a variety of treatment functions. Biological nitrogen and phosphorus removal is one of the most widely used methods to reduce the pollution of biological nutrients such as nitrogen and phosphorus. Traditional biological nitrogen and phosphorus removal processes generally involve nitrification, den...

Claims

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Application Information

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IPC IPC(8): C02F3/12
CPCY02W10/10
Inventor 杨国靖李小明杨麒廖德祥罗薇楠夏静芬
Owner 杨国靖
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