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Continuous-flow aerobic granular sludge membrane bioreactor used for treating berberine pharmaceutical wastewater

A technology of aerobic granular sludge and membrane bioreactor, applied in water pollutants, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the harsh operating conditions of the reactor and limit aerobic particles Sludge industrial application, complex operation, etc.

Inactive Publication Date: 2013-02-27
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cultivation and stabilization of aerobic granular sludge often requires a columnar reactor with a large height-to-diameter ratio and high aeration to meet the shear requirements for the formation and structure maintenance of aerobic granular sludge. The research on granular sludge is carried out in SBR reactor or its derivative reactor. The reactor operating conditions are harsh, the operation is complicated, and the energy consumption is high, which largely limits the industrial application of aerobic granular sludge.

Method used

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  • Continuous-flow aerobic granular sludge membrane bioreactor used for treating berberine pharmaceutical wastewater

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Experimental program
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Effect test

Embodiment 1

[0019] The berberine wastewater after anaerobic pretreatment is treated by using the above embodiment. The size of the reactor is: D 30cm×L 40cm×H50cm, the effective volume is 60L, the volume of the main reaction zone is 45L, the volume of the sludge granulation and membrane separation zone is 15L, and the aspect ratio of the sludge granulation and membrane separation zone is 1:5. The oxygen aeration rate is 120-160L / h, the flushing aeration rate is 600L / h, the average influent COD is 1047-2335mg / L, berberine is 7.25-82.5mg / L, NH 4 + -N 118.8-130.2mg / L, the hydraulic retention time of the reactor is 24h, the average effluent COD is 44.2-55.6mg / L, berberine 0.66-1.00mg / L, NH 4 + -N 1.63-2.35mg / L, the average removal rate of pollutants are respectively COD 95.2-98.3%, berberine 90.9-98.8%, NH 4 + -N 98.0-98.5%, the reactor has been running stably for 2 months, and more than 80% of the granular sludge has a particle size of 0.5-2.0mm.

Embodiment 2

[0021] Utilize above-mentioned embodiment to directly process berberine finished product mother liquor wastewater. The size of the reactor is: D 30cm×L 40cm×H 50cm, the effective volume is 60L, the volume of the main reaction zone is 45L, the volume of the sludge granulation and membrane separation zone is 15L, and the aspect ratio of the sludge granulation and membrane separation zone is 1:5. Oxygenation aeration rate is 160L / h, flushing aeration rate is 400L / h, in the average influent COD 804mg / L, berberine 132.6mg / L, NH 4 + -N 108.4mg / L, the hydraulic retention time of the reactor is 24h, the average effluent COD is 238.1mg / L, berberine 19.4mg / L, NH 4 + -N 0.99mg / L, the average removal rate of pollutants were COD 70.3%, berberine 85.2%, NH 4 + -N 99.1%. The particle size of the granular sludge in the reactor is 0.5±0.23mm.

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Abstract

The invention relates to a continuous-flow aerobic granular sludge membrane bioreactor used for treating berberine pharmaceutical wastewater. The reactor is separated into a main reaction area 5 and a sludge granulation and membrane separation area 6 by a perforated clapboard 17; the bottom of the main reaction area 5 is provided with a microporous aerating tray 9 to provide oxygen for biochemical reaction in the reactor; the bottom of the sludge granulation and membrane separation area is provided with an aerating pipe 8 to wash the surface of the membrane; and the microporous aerating tray 9 and the aerating pipe 8 jointly provide shearing force for forming and maintaining aerobic granular sludge. A hollow fibrous membrane component 7 is arranged in the sludge granulation and membrane separation area. The reactor adopts a continuous operation mode; and the wastewater is injected into a water inlet pump 1, treated and continuously sucked out of the reactor by a suction pump 16 through the membrane component 7. A membrane bioreactor is combined with an aerobic granular sludge bioreactor to realize the culture and stable running of the aerobic granular sludge; and through sludge granulation, the tolerance of microorganisms to berberine in the wastewater is improved and high-concentration organisms, the berberine and ammonia nitrogen in the wastewater can be synchronously and efficiently removed.

Description

technical field [0001] The invention belongs to membrane biotechnology wastewater treatment equipment, in particular to a continuous flow aerobic granular sludge membrane bioreactor for treating berberine pharmaceutical wastewater. Background technique [0002] Chemical synthesis of berberine production wastewater belongs to refractory organic wastewater, which has the characteristics of high concentration of organic matter and suspended matter, large pH value change, and complex composition. Products and other organic substances have poor microbial degradability; in addition, the finished berberine remaining in the wastewater has a strong inhibitory effect on microbial activity, and the conventional biological treatment process has problems such as low treatment efficiency, poor effluent quality, and poor process stability. [0003] The membrane bioreactor process is a new treatment process that has attracted widespread attention at home and abroad in recent years. It has t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/38C02F101/16
Inventor 邱光磊宋永会曾萍段亮刘风华
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI