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Method for treating phenol-contained waste water by anaerobic-aerobic coupled biological fluidizing bed

A biological fluidized bed, anaerobic and aerobic technology, applied in the direction of aerobic and anaerobic treatment, can solve the problems of long residence time, large floor area, low treatment efficiency, etc. Small area, the effect of reducing the occupied area

Inactive Publication Date: 2006-10-25
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to propose a more effective phenolic wastewater treatment method in order to overcome the shortcomings of the existing phenolic wastewater treatment method, such as large footprint, high energy consumption, long residence time and low treatment efficiency.

Method used

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  • Method for treating phenol-contained waste water by anaerobic-aerobic coupled biological fluidizing bed
  • Method for treating phenol-contained waste water by anaerobic-aerobic coupled biological fluidizing bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: Microbial Phase in a Macroporous Suspension Carrier

[0038] Fluidized bed type: air-lift internal circulation biological fluidized bed; effective volume: 19L

[0039] Carrier material: polyurethane; the volume ratio of the carrier dosage to the effective volume of the reactor: 1%

[0040] Carrier size: 15mm×15mm×15mm; Carrier aperture: 1.25mm; Porosity: 95%; Minimum one-dimensional size: 15mm Sludge source: Secondary sedimentation tank sludge of wastewater treatment plant

[0041] a. The wastewater first enters the regulating tank, and according to the ratio of various nutrients in the water, nitrogen salts, phosphorus salts and nutrient salts are added, and the pH of the wastewater is adjusted to about 7.0;

[0042] b. The adjusted wastewater enters the biological fluidized bed containing the macroporous suspension carrier for aeration, and realizes the degradation of wastewater through anaerobic-aerobic coupling biological treatment;

[0043] c. After an...

Embodiment 2

[0046] Embodiment 2: sequencing batch type activated sludge process

[0047] Fluidized bed type: air-lift internal circulation first-stage biological fluidized bed; effective volume: 19L

[0048] Carrier material: polyurethane; the volume ratio of the carrier dosage to the effective volume of the reactor: 30%;

[0049] Carrier size: 10mm×10mm×8mm; Carrier aperture: 0.5mm; Porosity: 80%; Minimum one-dimensional size: 8mm Processing cycle: 12h

[0050] a. The wastewater first enters the regulating tank, and according to the ratio of various nutrients in the water, nitrogen salts, phosphorus salts and nutrient salts are added, and the pH of the wastewater is adjusted to about 8.0;

[0051] b. The adjusted wastewater enters the biological fluidized bed containing the macroporous suspension carrier for aeration, and realizes the degradation of wastewater through anaerobic-aerobic coupling biological treatment;

[0052] c. After anaerobic and aerobic coupling treatment, the efflue...

Embodiment 3

[0055] Embodiment 3: sequencing batch activated sludge process

[0056] Fluidized bed type: air-lift internal circulation first-stage biological fluidized bed; effective volume: 19L

[0057] Carrier material: polyurethane; the volume ratio of the carrier dosage to the effective volume of the reactor: 5%

[0058] Carrier size: 25mm×25mm×25mm; Carrier aperture: 1.25mm; Porosity: 95%; Minimum one-dimensional size: 25mm Processing cycle: 24h

[0059] a. The wastewater first enters the regulating tank, and according to the ratio of various nutrients in the water, nitrogen salts, phosphorus salts and nutrient salts are added, and the pH of the wastewater is adjusted to about 8.5;

[0060] b. The adjusted wastewater enters the biological fluidized bed containing the macroporous suspension carrier for aeration, and realizes the degradation of wastewater through anaerobic-aerobic coupling biological treatment;

[0061] c. After anaerobic and aerobic coupling treatment, the effluent i...

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Abstract

The invention relates to a method for processing phenol-containing waste water by anaerobic-aerobic coupling biofluidized bed, firstly making the waste water enter in a regulating pondage and then enter in a biofluidized bed containing macroporous suspended carriers for aeration and degrading the waste water by the anaerobic-aerobic coupling biotreatment; then draining the degraded waste water out of the biofluidized bed, placing still, draining upper-layer standard-reaching water, discharging a small part of the lower-layer water with deposited mud and returning the large part to the biofluidized bed for continuing taking part in the waste water processing process. And it implements coupling of anaerobic and aerobic biodegradations.

Description

technical field [0001] The invention relates to a method for treating phenol-containing wastewater with an anaerobic-aerobic coupling biological fluidized bed, in particular to a treatment method for phenol wastewater, which belongs to the technical field of environmental engineering and industrial wastewater treatment. Background technique [0002] Phenol-containing wastewater mainly comes from coking, gas and petrochemical industries, and is a type of refractory organic wastewater. Phenol is the most toxic of phenolic compounds. The U.S. Environmental Protection Agency includes phenol in the list of 65 toxic pollutants of priority pollutants. my country also includes phenol in the blacklist of China's environmental priority pollutants. With the continuous expansion of industrial production scale, the discharge of phenolic wastewater is increasing, and the related phenolic wastewater treatment technology has emerged. [0003] At present, the treatment methods of phenolic w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 赵洲洋蒋国强乔永丁富新
Owner TSINGHUA UNIV
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