Nitrifying bacterium enrichment culture device and culture method

A technology of enrichment culture and culture device, which is applied in the field of nitrifying bacteria enrichment culture device, can solve the problems of long cycle time and long water inflow time, and achieve the effects of preventing loss, ensuring clarity and shortening the culture cycle

Active Publication Date: 2016-06-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, the water intake time is also longer, and the overall cycle time is still longer

Method used

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  • Nitrifying bacterium enrichment culture device and culture method
  • Nitrifying bacterium enrichment culture device and culture method
  • Nitrifying bacterium enrichment culture device and culture method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] use figure 1 The culture device shown enriches and cultivates nitrifying bacteria, wherein the thickness of the ceramic membrane plate is 2 cm, and the diameter of the membrane hole is 0.1 μm. According to the initial sludge concentration of 200mg / L, nitrifying bacteria activated sludge was added to the ceramic membrane inner cylinder, and 500mL of culture solution with an ammonia nitrogen concentration of 50mg / L was added at the same time, and the aeration system was started for aeration. During the cultivation process, maintain the dissolved oxygen concentration of the culture system at 1.0-1.5 mg / L, the temperature at 32°C, and the pH value at 7.8. Since the nitrification process is an acid production process, when the pH value is lower than the set value during the cultivation process, the lye is replenished to the culture system through the metering pump. The lye is a saturated solution of sodium bicarbonate. When the pH value reaches the set value, stop the proces...

Embodiment 2

[0049] use figure 1 The culture device shown enriches and cultivates nitrifying bacteria, wherein the thickness of the ceramic membrane plate is 3 cm, and the diameter of the membrane hole is 0.25 μm. According to the initial sludge concentration of 300mg / L, nitrifying bacteria activated sludge was added to the ceramic membrane inner cylinder, and at the same time, 500mL of culture solution with an ammonia nitrogen concentration of 100mg / L was added, and the aeration system was started for aeration. During the cultivation process, maintain the dissolved oxygen concentration of the culture system at 1.0-1.5mg / L, the temperature at 35°C, and the pH value at 8.5. Since the nitrification process is an acid production process, when the pH value is lower than the set value during the cultivation process, the lye is replenished to the culture system through the metering pump. The lye is a saturated solution of sodium bicarbonate. When the pH value reaches the set value, stop the proc...

Embodiment 3

[0053] use figure 1 The shown culture device enriches and cultivates nitrifying bacteria, wherein the thickness of the ceramic membrane plate is 5 cm, and the diameter of the membrane hole is 0.5 μm. According to the initial sludge concentration of 500mg / L, nitrifying bacteria activated sludge was added to the ceramic membrane inner cylinder, and at the same time, 500mL of culture solution with an ammonia nitrogen concentration of 150mg / L was added, and the aeration system was started for aeration. During the cultivation process, maintain the dissolved oxygen concentration of the culture system at 1.0-1.5mg / L, the temperature at 30°C, and the pH value at 7.5. Since the nitrification process is an acid production process, when the pH value is lower than the set value during the cultivation process, the lye is replenished to the culture system through the metering pump. The lye is a saturated solution of sodium bicarbonate. When the pH value reaches the set value, stop the proce...

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Abstract

The invention discloses a nitrifying bacterium enrichment culture device, which comprises an outer drum reactor and a ceramic membrane inner drum, wherein the outer drum reactor is of an opening-type structure, and the ceramic membrane inner drum, which is made from a ceramic membrane plate, is arranged in the outer drum reactor; an aerating system is arranged on the outer wall and the bottom end of the inner drum; the aerating system and sludge are separately arranged on two sides of the ceramic membrane inner drum; during aerating, the sludge is cultured in the ceramic membrane inner drum, and gas enters the inner drum by virtue of ceramic membrane holes, so that oxygen supply is achieved; a drainage port is formed in the bottom of the outer reactor, and a vacuum pump is connected to a sealed water collection tank, so that after culture, the vacuum pump is started, water is discharged to the sealed water collection tank while the sludge is intercepted by the ceramic membrane. A nitrifying bacterium enrichment culture method disclosed by the invention is implemented by virtue of the above culture device. According to the nitrifying bacterium enrichment culture device disclosed by the invention, the ceramic membrane inner drum, which is arranged in the reactor, serves as a nitrifying bacterium culture unit, so that a water changing time of sludge settlement is effectively shortened and a culture cycle is shortened; and meanwhile, sludge floc loss in water drainage is prevented and the steady growth of the sludge is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of environmental microorganisms and sewage treatment, and in particular relates to a nitrifying bacteria enrichment culture device and a culture method. Background technique [0002] In order to prevent the occurrence of eutrophication in lakes and other receiving water bodies, all urban sewage treatment plants have applied new operating methods and control strategies to remove nitrogen and phosphorus. With the introduction of new microbial treatment technologies, the efficiency of sewage treatment facilities has been significantly improved. When nitrification and denitrification technology is applied to the treatment of ammoniacal sewage, it is economically and technically feasible. [0003] In the biological nitrogen removal method, whether it is the traditional nitrification-denitrification, or the new short-range nitrification-denitrification and short-range nitrification-ANAMMOX, it is necessary to rem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/12C12M1/04C12M1/00C12N1/20C02F3/34
Inventor 赵胜楠高会杰孙丹凤郭志华
Owner CHINA PETROLEUM & CHEM CORP
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