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Method and special device for treating organic wastewater by combination of microbial fuel cell and microalgae culture

A technology for fuel cell and microalgae cultivation, applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as energy consumption efficiency, increase transfer rate, and improve removal rate , Improve the effect of wastewater treatment

Inactive Publication Date: 2012-09-19
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the solid particles and suspended solids in the sewage must be removed by filtration and other methods to improve the light transmittance before use. This process is not only energy-consuming but also inefficient.

Method used

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  • Method and special device for treating organic wastewater by combination of microbial fuel cell and microalgae culture
  • Method and special device for treating organic wastewater by combination of microbial fuel cell and microalgae culture
  • Method and special device for treating organic wastewater by combination of microbial fuel cell and microalgae culture

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Microbial fuel cell and photobioreactor split coupling system structure:

[0032] Microbial fuel cell of the present invention uses anode and cathode chamber continuous flow double-tube structure (see figure 1), mainly including: pump 1, anode chamber water inlet 2, circular aeration tube 3, cylindrical anode chamber 4, anode electrode 5, stainless steel cylinder 6, cation exchange membrane 7, cathode electrode 8, cylindrical cathode chamber 9, cover 10 and resistor 11.

[0033] Microbial fuel cell and photobioreactor split coupling system structure: the cylindrical anode chamber 4 is coaxially arranged in the cylindrical cathode chamber 9, and the cylindrical anode chamber 4 and the cylindrical cathode chamber 9 are exchanged through cation exchange. Membrane 7 separates, cylindrical anode chamber 4 is provided with anode electrode 5, cylindrical cathode chamber 9 is provided with cathode electrode 8, cylindrical cathode chamber 9 designed outside cylindrical anode ch...

Embodiment 2

[0042] The difference from Example 1 is that the microbial fuel cell and photobioreactor are integrated coupling system structure:

[0043] The cylindrical cathode chamber 9 of the above-mentioned microbial fuel cell is directly used as a photobioreactor, so that the microbial fuel cell and the photobioreactor are integrated (such as Figure 4 shown).

[0044] Sewage is input from the anode chamber water inlet 2 by the pump 1, flows into the photobioreactor (cathode chamber 9) through the top of the cylindrical anode chamber 4, and then passes through the outlet of the bottom side of the cathode chamber 9 as the photobioreactor. Water flows out.

[0045] During the operation of microbial fuel cells, it is usually necessary to blow air in the cathode chamber to provide sufficient oxidants (oxygen) for the cathode reaction, while CO 2 To provide sufficient carbon sources for the growth of microalgae, both require energy consumption, and the utilization efficiency of both gases...

Embodiment 3

[0048] The difference from Example 1 is that the upflow type membraneless microbial fuel cell and photobioreactor are integrated coupling system structure:

[0049] The anode-cathode compartment continuous flow upflow type microbial fuel cell used in the present invention is mainly processed by organic glass (PMMA) (as Figure 5 shown), mainly includes: pump 1, anode chamber water inlet 2, cylindrical anode chamber 4, anode electrode 5, perforated plexiglass plate 14, glass wool 15, glass bead layer 16, circular aeration tube 3, cathode Electrode 8, cylindrical cathode chamber 9 (photobioreactor), load 11, anode chamber sampling port 13.

[0050] The upflow membraneless microbial fuel cell is formed by sealing one end of a cylindrical PMMA tube with an inner diameter of 8.0 cm and a length of 65 cm. The fuel cell cathode chamber (31 cm high) and anode chamber (24 cm high) are arranged from bottom to top. For the perforated organic glass plate 14, glass wool layer 15 and glass...

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Abstract

The invention relates to a wastewater treatment technology, in particular to a method for treating organic wastewater by the combination of a microbial fuel cell and microalgae culture. The method comprises the following steps of: generating electric energy while organic substances, nitrogen and phosphorus in wastewater are removed through the microbial fuel cell, introducing the wastewater treated by the microbial fuel cell into a photobioreactor and culturing microalgae, and performing further continuous treatment by using the microalgae until the wastewater obtained after treatment meets the discharge standard. The method can be widely used for the treatment of the organic wastewater, improves the treatment effect of the wastewater, ensures that the electric energy and biomass energy which are obtained can compensate the cost of wastewater treatment, provides a novel way for the effective treatment of the organic wastewater, and has an important significance for saving energy, reducing emission and protecting environments.

Description

technical field [0001] The invention relates to a wastewater treatment technology, in particular to a method for treating organic wastewater by combining microbial fuel cells and microalgae cultivation and a special device thereof. Background technique [0002] A large amount of organic wastewater is produced every year in the world. The traditional wastewater biological treatment process not only consumes a lot of energy, but also produces a large amount of sludge, and the cost of sludge treatment is also high. Therefore, there is a need to develop alternative technologies that are more efficient and less costly. At the same time, energy shortage is also a major bottleneck restricting human development in the 21st century. Therefore, it is imperative to develop economical and efficient new energy sources, among which bio-new energy is one of the main research hotspots. Microbial fuel cell (MFC) is a device that uses microorganisms as catalysts to oxidize organic matter an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00
Inventor 郭荣波蒋海明罗生军杨智满
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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