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A device for multi-stage phosphorus removal and production of phosphine from phosphorus-containing organic wastewater

A technology for organic wastewater and phosphine, which is applied in the fields of phosphine, water pollutants, biochemical fuel cells, etc., can solve the problem of low phosphine yield, difficulty in continuing research, and difficulty in quantitatively determining the conversion of total phosphorus in water to phosphorus. Hydrogen efficiency and other issues to achieve the effect of improving economic value and reducing energy consumption

Active Publication Date: 2017-03-08
SOUTH CHINA UNIV OF TECH
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  • Description
  • Claims
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Problems solved by technology

However, although the continuous production of phosphine in these reactors has been observed, the microbial production mechanism of phosphine is still unclear, so it is difficult to quantitatively determine the conversion efficiency of total phosphorus in water into phosphine, making continuous research difficult to proceed
And the use of microbial anaerobic phosphorus removal to produce phosphine, the yield of phosphine is also relatively low

Method used

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  • A device for multi-stage phosphorus removal and production of phosphine from phosphorus-containing organic wastewater
  • A device for multi-stage phosphorus removal and production of phosphine from phosphorus-containing organic wastewater

Examples

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Embodiment 1

[0024] A device for multi-stage phosphorus removal and production of phosphine from phosphorus-containing organic wastewater, including an anaerobic reactor 1, a microbial fuel cell 2, and a microbial electrolysis cell 3. The outlet pipe of the anaerobic reactor is connected to the anode water inlet pipe of the microbial fuel cell The anode outlet pipe of the microbial fuel cell is connected to the water inlet pipe of the microbial electrolysis cell, and the power output terminal of the microbial fuel cell is connected to the power port of the microbial electrolysis cell.

[0025] Preferably, the anaerobic reactor is provided with top gas production area, clear water area, organic waste water area and sludge area successively from top to bottom, and the top gas production area, clear water area, organic waste water area and sludge area are respectively provided with Switch valve 4.

[0026] Preferably, anaerobic microbial sludge is placed in the sludge zone.

[0027] Preferab...

Embodiment 2

[0034] A method for producing phosphine by multi-stage phosphorus removal from organic wastewater:

[0035] (1) Anaerobic microbial phosphorus removal to produce phosphine

[0036] Inoculate the sludge of phosphine-producing bacteria in the anaerobic sequencing batch reactor, adjust the pH of phosphorus-containing organic wastewater to 6-7, add it to the anaerobic sequencing batch reactor, and control the hydraulic retention time in the reactor 20h, by anaerobic treatment, the organic phosphorus in the waste water is preliminarily degraded into phosphate and part of the phosphorus in the waste water is transformed into phosphine, and the phosphine is collected; the concentration of the sludge of the phosphine-producing bacteria in the reactor 4g / L;

[0037] Influent COD is 4000mg / L, TP is 5mg / L. Organic phosphorus is converted into inorganic phosphorus under the action of phosphine-producing bacteria, which increases the concentration of inorganic phosphorus in the effluent;...

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Abstract

The invention discloses a device for removing phosphor from phosphor-containing organic wastewater and producing hydrogen phosphide. The device comprises an anaerobic reactor, a microbial fuel cell and a microbial electrolytic bath; the water outlet pipe of the anaerobic reactor is connected to the anode water inlet pipe of the microbial fuel cell; the anode water outlet pipe of the microbial fuel cell is connected to the water inlet pipe of the microbial electrolytic bath; and the electricity output terminal of the microbial fuel cell is connected to the power supply port of the microbial electrolytic bath. The organic wastewater is introduced into the anaerobic sequencing batch reactor, the organic phosphor and occluded phosphor in organic wastewater are converted into phosphate through the metabolism of microbes, and then the wastewater is processed by the microbial fuel cell and microbial electrolytic bath. In the prior art, the phosphor removing efficiency is very low because the microbial anaerobic process is taken as the main process of hydrogen phosphide production, and the provided device solve the problem mentioned above.

Description

technical field [0001] The invention relates to the technical field of waste water treatment, and relates to a device for multi-stage phosphorus removal and production of phosphine from phosphorus-containing organic waste water. In particular, it relates to a device which uses anaerobic biological treatment and microbial electrolytic cell in combination to treat organic waste water and realize multi-stage phosphorus removal to produce phosphine. Background technique [0002] Phosphine (PH 3 ) is an important reduced form of phosphorus in the natural environment, and this view has been generally accepted. Since Devai et al first detected the presence of phosphine in the volatiles of sewage plants in 1988, more and more researchers have participated in the research of phosphine related fields. At present, the problem of global water eutrophication is serious. Phosphorus is one of the main limiting substances of water eutrophication. Trying to efficiently remove phosphorus in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28H01M8/16C01B25/06C02F101/30
CPCY02E60/50
Inventor 牛晓君魏爱书
Owner SOUTH CHINA UNIV OF TECH
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