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A kind of nitrifying bacteria enrichment culture device and culture method

An enrichment culture and culture device technology, applied in the field of nitrifying bacteria enrichment culture devices, can solve the problems of long water intake time and long cycle time, and achieve the effects of ensuring clarity, preventing loss, and preventing sludge floc loss

Active Publication Date: 2018-02-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • A kind of nitrifying bacteria enrichment culture device and culture method
  • A kind of nitrifying bacteria enrichment culture device and culture method
  • A kind of nitrifying bacteria 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 device for enriching and cultivating nitrifying bacteria, which comprises an outer cylinder reactor and a ceramic membrane inner cylinder. The outer cylinder reactor has an open structure, and a ceramic membrane inner cylinder made of ceramic membrane plates is arranged inside; The outer wall and the bottom of the cylinder are equipped with an aeration system. The aeration system and the sludge are respectively located on both sides of the inner cylinder of the ceramic membrane. During aeration, the sludge is cultivated in the inner cylinder of the ceramic membrane, and the gas enters the inner cylinder through the holes of the ceramic membrane to realize oxygen supply. ;The bottom of the external reactor is provided with a drainage port, which is connected to the sealed water collection tank through a vacuum pump. When the cultivation is completed, the vacuum pump is started to drain the water into the closed water collection tank, and the sludge is retained by the ceramic membrane. The method for enriching and cultivating nitrifying bacteria of the present invention is carried out by using the above-mentioned cultivating device. The present invention sets a ceramic membrane inner cylinder in the reactor as a nitrifying bacteria culture unit, which effectively reduces the time for sludge settling and water exchange, shortens the culture period, and can prevent the loss of sludge flocs during drainage, ensuring the stability of sludge increase.

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 Patents(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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