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Ceramic bioreactor and sewage treatment method thereof

A bioreactor and bioreactor technology, which is applied in the field of ceramic bioreactor and its sewage treatment, can solve the problem of reasonable coordination of porosity and strength relationship, which hinders large-scale application, unreasonable design of pre-stage biological pretreatment unit, and increase of CFBR. System investment cost and other issues, to achieve the effect of reducing maintenance and replacement costs, low pressure demand, and low hydraulic load

Inactive Publication Date: 2014-08-06
UNIV OF SHANGHAI FOR SCI & TECH
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  • Abstract
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Problems solved by technology

[0004] However, CFBR technology also has the cost of materials and preparation of large-scale porous ceramic products; problems such as reasonable coordination of porosity and strength hinder its large-scale application in the industrial field
In addition, most CFBR systems do not integrate the pre-stage biological treatment unit or the pre-stage biological pretreatment unit is unreasonably designed and the treatment efficiency is not high, resulting in low design water flux and increasing the investment cost of the CFBR system

Method used

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  • Ceramic bioreactor and sewage treatment method thereof
  • Ceramic bioreactor and sewage treatment method thereof

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Embodiment 2

[0049] The ceramic filter bioreactor of the present invention is used for sewage treatment in villages and towns, and the sewage from villages and towns is simply collected and treated in a septic tank, and then directly enters the six-stage movable less-aeration ceramic filter bioreactor of the present invention for treatment. The influent CODcr concentration is 300-500mg / L, BOD 5 The concentration is 130-250 mg / L, the concentration of TP is 3-6mg / L, the concentration of TN is 25-45mg / L, and the concentration of ammonia nitrogen is 15-35 mg / L; the relevant effluent indicators can stably meet the "Pollution of urban sewage treatment plants "(GB 18918-2002) Level B requirements. In this example, the total hydraulic retention time of the device of the present invention is 7.8 hours, and the aerobic tank: the anoxic tank: the anaerobic tank quantity ratio is 2:3:1, and the membrane flux is 120L / m 2 .h.

Embodiment 3

[0051] The ceramic filter bioreactor of the present invention is used for the treatment of coking wastewater. After the coking wastewater is pretreated by the grid-grease trap-primary sedimentation-air flotation process, it directly enters the six-stage movable less-aeration ceramic filter biological reaction of the present invention. device for post-processing. Its influent COD cr The concentration is 600-1000mg / L, BOD 5 The concentration is 200-350 mg / L, the ammonia nitrogen concentration is 200-300 mg / L, and the relevant effluent indicators can stably meet the first-level standard for coking wastewater in the "Integrated Wastewater Discharge Standard" (GB8978-96).

[0052] In this example, the total hydraulic retention time of the ceramic bioreactor of the present invention is 24 hours, the quantity ratio of aerobic tank: anoxic tank is 1:1, and anaerobic tank is not provided. The membrane flux is 100L / m 2 .h.

Embodiment 4

[0054] The ceramic filter bioreactor of the present invention is used for the treatment of printing and dyeing wastewater, and the printing and dyeing wastewater is pretreated by a grid-coagulation-sedimentation process, and directly enters the ceramic filter bioreactor of the present invention for post-treatment. Its influent COD cr The concentration is 600-1200mg / L, BOD 5 The concentration is 180-400 mg / L, the chromaticity is 80 times, and the relevant effluent indicators can stably meet the "Water Pollutant Discharge Standards for Textile Dyeing and Finishing Industry" (GB4278-1992).

[0055] In this example, the total hydraulic retention time of the device of the present invention is 30 hours, the ratio of aerobic pool to anoxic pool is 1:1, and no anaerobic pool is set. The membrane flux is 100L / m 2 .h.

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Abstract

The invention relates to a ceramic bioreactor and a sewage treatment method thereof. The ceramic bioreactor comprises a five-section multistage bioreaction tank system and an immersed ceramic bioreactor, wherein the five-section multistage bioreaction tank system is composed of reaction tanks, an aeration plant and a sludge reflux pump. The ceramic bioreactor can provide a construction-free installation-free solution for village and town sewage, industrial wastewater, high-grade communities, villas and other places in need of semi-centralized / dispersed sewage treatment. The water outlet flux can be enhanced by 10 times as compared with the traditional MBR (membrane bioreactor) system (up to 100-150L / m<2>.h), thereby lowering the investment cost; the comprehensive aeration energy consumption is lowered by 30% as compared with the existing MBR system with dephosphorization and denitrification functions, thereby lowering the operating cost; and the ceramic bioreactor can effectively lower and even avoid the membrane pollution problem of the MBR system, thereby lowering the system maintenance and replacement cost.

Description

technical field [0001] The invention relates to a method for treating and reusing domestic sewage or industrial wastewater, in particular to a ceramic bioreactor and a sewage treatment method thereof. Background technique [0002] Ceramic Filtration Bio-Reactor (CFBR) is a sewage treatment technology that combines ceramic separation technology with biological treatment technology. It replaces the secondary settling tank in traditional biological treatment with ceramic components to maintain high activity sludge concentration, reducing the footprint of sewage treatment facilities, and reducing sludge volume by keeping sludge loads low. CFBR mainly uses ceramic separation equipment to retain activated sludge and macromolecular solids in the tank, so the concentration of activated sludge (MLSS) in the system can be increased by 10,000mg / L, and the sludge age (SRT) can be extended by more than 30 days, which can reduce The volume of the biological reaction pool increases the de...

Claims

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Application Information

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IPC IPC(8): C02F3/30
Inventor 刘洪波朱梦羚高赛赛陈漂潘定
Owner UNIV OF SHANGHAI FOR SCI & TECH
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