A biomembrane electrode coupled artificial wetland reactor and its sewage treatment method

A biomembrane electrode and artificial wetland technology, applied in the field of water treatment, can solve problems that have not been reported, and achieve the effect of improving the treatment effect, strong applicability, and uniform water distribution

Active Publication Date: 2022-02-22
DALIAN OCEAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reports on the combination of constructed wetlands and microbial fuel cells have gradually increased in recent years, but there are almost no reports on the combination of constructed wetlands with biofilm electrodes

Method used

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  • A biomembrane electrode coupled artificial wetland reactor and its sewage treatment method
  • A biomembrane electrode coupled artificial wetland reactor and its sewage treatment method
  • A biomembrane electrode coupled artificial wetland reactor and its sewage treatment method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] A kind of sewage treatment method of biomembrane electrode coupled artificial wetland reactor, mainly comprises the following steps:

[0069] S1: Collect sludge and cultivate microorganisms under the conditions of 25°C and pH7.0 intermittent aeration, and artificially prepare nutrients to cultivate biofilm; pump sewage into water distribution pipe 2 through the water inlet pump, and run continuously in the reactor 20 days for hanging film;

[0070] S2: After the reactor is successfully started, the HRT is 4.6h, the influent pH is 7.00, and the dissolved oxygen is 4.1mg / L. Organic pollutant load (COD) is 100mg / L, ammonia nitrogen pollutant (NH 4 + -N) load is 6mg / L, microcystin MC-LR load (COD) is 8mg / L, temperature is 20°C, and the power supply 5 is turned on to control the current to 0.5mA; the sewage is purified through the reactor.

Embodiment 2

[0072] A kind of sewage treatment method of biomembrane electrode coupled artificial wetland reactor, mainly comprises the following steps:

[0073] S1: Collect sludge and cultivate microorganisms under the conditions of 25°C and pH7.0 intermittent aeration, and artificially prepare nutrients to cultivate biofilm; pump sewage into water distribution pipe 2 through the water inlet pump, and run continuously in the reactor 20 days for hanging film;

[0074] S2: After the reactor is successfully started, the HRT is 4.6h, the influent pH is 7.00, and the dissolved oxygen is 4.1mg / L. The organic pollutant (COD) load is 150mg / L, the ammonia nitrogen pollutant (NH 4 + -N) load is 9.5mg / L, microcystin MC-LR load (COD) is 9mg / L, temperature is 30°C, and the power supply 5 is turned on to control the current to 0.1mA; the sewage is purified through the reactor.

[0075] The working principle of the above method is: use the filler as a microbial carrier, fix the denitrifying bacteria ...

Embodiment 3

[0077] A kind of sewage treatment method of biomembrane electrode coupled artificial wetland reactor, mainly comprises the following steps:

[0078] S1: Collect sludge and cultivate microorganisms under the conditions of 25°C and pH7.0 intermittent aeration, and artificially prepare nutrients to cultivate biofilm; pump sewage into water distribution pipe 2 through the water inlet pump, and run continuously in the reactor 20 days for hanging film;

[0079] S2: After the reactor is successfully started, the HRT is 4.6h, the influent pH is 7.00, and the dissolved oxygen is 4.1mg / L. Organic pollutant load (COD) is 200mg / L, ammonia nitrogen pollutant (NH 4 + -N) load is 10mg / L, microcystin MC-LR load (COD) is 10mg / L, temperature is 25°C, and the power supply 5 is turned on to control the current to 2.5mA; the sewage is purified through the reactor.

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Abstract

The invention discloses a biomembrane electrode coupled artificial wetland reactor and a sewage treatment method thereof. The biomembrane electrode coupled artificial wetland reactor adopts the upper layer of the artificial wetland with graphite as the anode, and the lower anaerobic environment with steel mesh and activated carbon as the composite cathode. For sewage treatment, the denitrification and microcystin removal efficiency of the reactor can be enhanced by introducing a certain microcurrent. The invention has the advantages of simple device, convenient operation and management, good treatment effect and small occupied area, and can remarkably improve the treatment effect of sewage containing nitrogen and microcystin.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a biological membrane electrode coupled artificial wetland reactor and a sewage treatment method thereof. Background technique [0002] In recent years, with the widespread use of various chemical substances such as fertilizers, detergents, and pesticides, and the discharge of a large amount of domestic sewage, some unreduced nitrogen enters the water environment in the form of nitrate, and the concentration of nitrate in groundwater has gradually increased. In some areas, it has reached 40mg / L. However, the limit value of nitrate in my country's "Drinking Water Quality Standard" is less than 20mg / L. From this point of view, the traditional biological treatment process can no longer satisfy the removal of nitrogen. At the same time, in recent years, as a tertiary treatment project for advanced wastewater treatment, constructed wetlands can further reduce the discharge o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F3/34C02F101/16C02F101/38
CPCC02F3/005C02F3/302C02F3/34C02F2203/006C02F2101/16C02F2101/38
Inventor 吴英海韩蕊魏东洋张恒军方晓航贺涛宛立
Owner DALIAN OCEAN UNIV
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