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Anaerobic permeable membrane bioreactor desalination method based on flowing carbon electrode

A bioreactor, oxygen permeable membrane technology, applied in chemical instruments and methods, electrochemical biocombination treatment, separation methods, etc., to achieve the effects of alleviating membrane fouling, reducing the accumulation of SMP, and slowing the accumulation of VFAs

Inactive Publication Date: 2020-07-03
DALIAN UNIV OF TECH
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Problems solved by technology

[0005] Aiming at the problem of salinity accumulation on the raw material liquid side caused by the reverse salt flux during AnOMBR operation, the present invention proposes a desalination method for anaerobic osmotic membrane bioreactor based on flowing carbon electrodes

Method used

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  • Anaerobic permeable membrane bioreactor desalination method based on flowing carbon electrode

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Embodiment 1

[0013] Embodiment 1: Desalination method of anaerobic osmotic membrane bioreactor based on flowing carbon electrode

[0014] Figure 1-2 It is a schematic diagram of an anaerobic osmotic membrane bioreactor based on flowing carbon electrode desalination of the present invention. The experimental device includes a draw liquid pool 1, a FO membrane module 3, a desalination chamber 4, a raw material liquid pool 9, and a water inlet pool 11; It will return to the draw liquid pool; the raw material pool 9 is connected to the FO membrane module through the peristaltic pump 7, the sludge supernatant is pumped into the active layer side of the FO membrane module, and the effluent passes through the water passage 16 in the desalination chamber 4, and then returns to The raw material liquid pool 9; the desalination time is 3h / d when power is applied, and the flow direction of the raw material liquid is controlled by the water stop valve 5 to control the desalination time; the water inl...

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Abstract

The invention discloses an anaerobic permeable membrane bioreactor desalination method based on a flowing carbon electrode, and belongs to the technical field of sewage treatment. A flowing carbon electrode is introduced, under the action of an external electric field, when a sludge supernatant in the anaerobic permeable membrane bioreactor passes through a chamber in the middle of an ion exchangemembrane of a desalting chamber, anions and cations in the solution can move towards two sides, the flowing carbon electrodes pass through the outer side of the ion exchange membrane, when ions in asolution penetrate through the ion exchange membrane to reach the flowing carbon electrodes on the two sides, the ions can be adsorbed on the activated carbon with the high specific surface area due to the action of potential difference, and the purpose of charge neutralization is achieved by mixing the flowing electrodes on the two sides of the ion exchange membrane. The desalted sludge supernatant returns to the reactor, so that the purpose of controlling salinity accumulation in the reactor is achieved, and further the purposes of improving the conventional pollutant removal rate of the reactor, stabilizing the pH, reducing SMP accumulation and reducing membrane pollution are achieved.

Description

technical field [0001] The invention relates to a desalination method for an anaerobic permeable membrane bioreactor based on a flowing carbon electrode, belonging to the technical field of sewage treatment. Background technique [0002] The environmental pollution and greenhouse effect caused by primary energy consumption are becoming more and more serious, which makes biomass energy, one of the three major renewable resources, attract much attention. Sewage, sludge, agricultural waste and other biomass-rich substances increase at a rate of about 25% per year. Anaerobic digestion can use these substances as anaerobic digestion substrates and convert them into available materials under the action of anaerobic bacteria. biogas and other energy sources. [0003] Anaerobic Osmotic Membrane Bioreactor (AnOMBR) uses forward osmosis (FO) membrane with high rejection rate to replace ultrafiltration or microfiltration membrane in anaerobic membrane bioreactor (AnMBR). While complet...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F1/469C02F1/44C02F1/42
CPCC02F1/42C02F1/445C02F1/469C02F3/005C02F3/2853Y02A20/131
Inventor 张捍民崔登凯
Owner DALIAN UNIV OF TECH
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