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Biofilm magnetic field device and method for treating sewage by photosynthetic organisms

A technology of photosynthetic organisms and biofilms, applied in the direction of biological water/sewage treatment, water/sewage treatment, water treatment parameter control, etc., can solve problems such as inability to improve photosynthetic bacteria membrane bioreactor sewage treatment effect and biomass production , to shorten the hydraulic retention time and improve the efficiency of wastewater treatment

Pending Publication Date: 2019-09-10
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in sewage treatment, wastewater is the culture medium of photosynthetic bacteria, and magnetic treatment of water cannot be used to improve the sewage treatment effect and biomass production of photosynthetic bacteria membrane bioreactors

Method used

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  • Biofilm magnetic field device and method for treating sewage by photosynthetic organisms
  • Biofilm magnetic field device and method for treating sewage by photosynthetic organisms
  • Biofilm magnetic field device and method for treating sewage by photosynthetic organisms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 1 , a photosynthetic bacteria membrane bioreactor wastewater treatment device based on magnetic field radiation, comprising a membrane bioreactor 7, a magnet 6,

[0043] A flat membrane 10 is placed in the membrane bioreactor, and two magnets are placed on both sides of the membrane bioreactor in the width direction of the flat membrane, so that the direction of the magnetic force lines is parallel to the width direction of the flat membrane. The membrane bioreactor 7 is provided with a water inlet 8 and a water outlet 9, and the water inlet 8 is connected with a waste water storage tank 1 through a waste water inlet pipe; the water outlet 9 is connected with an outlet water storage tank 14 through a water outlet pipe;

[0044] An aeration head 5 is arranged at the bottom of the membrane bioreactor, and the aeration head is connected to an air compression pump 4 through a compressed air pipeline. A glass rotameter is installed on the compressed air pipel...

Embodiment 2

[0059] In this embodiment, the COD concentration in the treated food processing wastewater is 3100 mg / L, and the SS concentration is 41.3 mg / L. Adopt the equipment identical with embodiment 1, comprehensive processing step:

[0060] 1. Test the pH in the wastewater storage tank and adjust it to 6.8;

[0061] 2. Through the water pump, pump 1L of regulated food processing wastewater from the wastewater storage tank to the photosynthetic bacteria membrane bioreactor, add 1L of photosynthetic bacteria mixture that has reached the plateau, and the final concentration of photosynthetic bacteria is 3200mg / L dry weight, The total liquid volume is three-fifths of the volume of the reactor main body;

[0062] 3. Turn on the air compressor pump, adjust the gas flow meter, and aerate the reactor so that the oxidation-reduction potential (ORP) is -100-20mV;

[0063] 4. In the experimental group, a magnet with a magnetic field strength of 0.8 T was selected and fixed on both sides of the...

Embodiment 3

[0068] In this embodiment, the COD concentration in the treated food processing wastewater is 2700 mg / L, and the SS concentration is 31.7 mg / L. Adopt the equipment identical with embodiment 1, comprehensive processing step:

[0069] Comprehensive processing steps:

[0070] 1. Test the pH in the wastewater storage tank and adjust it to 6.8;

[0071] 2. Through the water pump, pump 1.9L of adjusted food processing wastewater from the wastewater storage tank to the photosynthetic bacteria membrane bioreactor, add 0.1L of the photosynthetic bacteria mixture that has reached the plateau, and the final concentration of photosynthetic bacteria is 100mg / L. Heavy, the total liquid volume is three-fifths of the volume of the reactor main body;

[0072] 3. Turn on the air compressor pump, adjust the gas flow meter, and aerate the reactor so that the oxidation-reduction potential (ORP) is -100-20mV;

[0073] 4. Select a magnet with a magnetic field strength of 0.04T and fix it on both ...

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Abstract

The invention provides a device for treating sewage by photosynthetic biology, which comprises a membrane bioreactor and magnets, wherein a flat membrane is arranged in the membrane bioreactor, and two magnets are arranged on two sides of the membrane bioreactor in the width direction of the flat membrane, so that the direction of magnetic lines is parallel to the width direction of the flat membrane. Based on the device, the invention also provides a method for treating sewage by photosynthetic organisms. According to the invention, the high-strength magnet is used as an external magnetic field, so that photosynthetic bacteria in the membrane bioreactor are always in the magnetic field, thereby achieving a better effect of treating sewage than culturing photosynthetic bacteria with magnetically treated water. The method can shorten the hydraulic retention time of the photosynthetic bacteria membrane bioreactor, improve the wastewater treatment efficiency and improve the biological yield through the use of the high-strength magnet.

Description

technical field [0001] The invention belongs to the field of waste water treatment and recycling, and in particular relates to a method for treating waste water with microorganisms. Background technique [0002] Food processing wastewater includes wastewater discharged from sugar, brewing, meat, dairy processing and other production processes, which contains a large amount of organic matter, suspended matter, nitrogen and phosphorus compounds, generally non-toxic, but easy to corrupt, and the water quality and quantity vary with seasons Variety. If it is discharged directly without treatment, it will cause eutrophication of the water body, cause harm to the soil environment, and cause environmental pollution. [0003] Membrane bioreactor is a sewage treatment equipment that combines activated sludge biodegradation reactor and membrane separation technology. Membrane bioreactor has been widely used because of its small footprint, low yield of excess sludge, and automatic co...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/32
CPCC02F9/00C02F1/48C02F2209/04C02F3/34C02F1/66C02F2201/48C02F2209/44C02F2103/32
Inventor 卢海凤何仕超蒋伟忠徐虹韩挺张源辉
Owner CHINA AGRI UNIV
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