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Synchronous methanogenesis and aerobic methane oxidation coupling denitrification process control method

An oxidation coupling, aerobic methane technology, applied in aerobic and anaerobic process treatment, chemical instruments and methods, water treatment parameter control, etc., can solve problems such as high safety risks, high operating costs, and difficult operations, and achieve The effect of high removal efficiency, promotion of mass transfer efficiency, and prolongation of contact time

Pending Publication Date: 2020-08-04
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the disadvantages of high operating cost, difficult operation and high safety risk of the existing external methane gas supply mode, the present invention provides a process control method for synchronous methane production and aerobic methane oxidation coupling denitrification

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  • Synchronous methanogenesis and aerobic methane oxidation coupling denitrification process control method

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Embodiment 1

[0038] A method for controlling synchronous methane production and aerobic methane oxidation coupling denitrification process, comprising the following steps:

[0039] (1) The establishment of a reaction system includes: an inlet water adjustment tank, an inlet water peristaltic pump, an expanded granular sludge bed biofilm reactor, an internal circulation pump, and an air compressor;

[0040] The expanded granular sludge bed biofilm reactor includes two parts: the main reaction area and the three-phase separator, the volume ratio is (1~1.2):1; the lower part of the main reaction area is a granular sludge bed, and the top of the main reaction area is arranged with a fixed packing bed , the fixed packing bed accounts for 50% of the volume of the main reaction zone; the three-phase separator is located at the top of the reactor, and its main function is to settle sludge, separate the treated wastewater and collect methane gas; both the main reaction zone and the three-phase separ...

Embodiment 2

[0054] A method for controlling synchronous methane production and aerobic methane oxidation coupling denitrification process, comprising the following steps:

[0055] (1) The establishment of a reaction system includes: an inlet water adjustment tank, an inlet water peristaltic pump, an expanded granular sludge bed biofilm reactor, an internal circulation pump, and an air compressor;

[0056] The expanded granular sludge bed biofilm reactor includes two parts: the main reaction area and the three-phase separator, the volume ratio is (1~1.2):1; the lower part of the main reaction area is a granular sludge bed, and the top of the main reaction area is arranged with a fixed packing bed , the fixed packing bed accounts for 45% of the volume of the main reaction zone; the three-phase separator is located at the top of the reactor, and its main function is to settle sludge, separate the treated wastewater and collect methane gas; both the main reaction zone and the three-phase separ...

Embodiment 3

[0070] A method for controlling synchronous methane production and aerobic methane oxidation coupling denitrification process, comprising the following steps:

[0071] (1) The establishment of a reaction system includes: an inlet water adjustment tank, an inlet water peristaltic pump, an expanded granular sludge bed biofilm reactor, an internal circulation pump, and an air compressor;

[0072] The expanded granular sludge bed biofilm reactor includes two parts: the main reaction area and the three-phase separator, the volume ratio is (1~1.2):1; the lower part of the main reaction area is a granular sludge bed, and the top of the main reaction area is arranged with a fixed packing bed , the fixed packing bed accounts for 40% of the volume of the main reaction zone; the three-phase separator is located at the top of the reactor, and its main function is to settle sludge, separate the treated wastewater and collect methane gas; both the main reaction zone and the three-phase separ...

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Abstract

The invention discloses a synchronous methanogenesis and aerobic methane oxidation coupling denitrification process control method. The method comprises the following steps: (1) establishing a reaction system; (2) carrying out microbial culture; (3) enriching anaerobic methanogens; (4) enriching aerobic methane oxidizing bacteria; and (5) enriching denitrifying bacteria, removing 91.4%-98.8% of COD, 93.2%-99% of NO3-N and 71%-93.5% of TN by a system under the process condition, and ensuring that the methane recovery amount is 180-660mL / d. The method is economical and efficient, and good socialand economic benefits can be generated. The organic and nitrogen pollutants in the wastewater are removed, the greenhouse effect of effluent soluble methane is eliminated, and meanwhile part of gaseous methane can be recycled.

Description

technical field [0001] The invention belongs to the technical field of waste water biological treatment, in particular to a synchronous methane production, aerobic methane oxidation coupled denitrification process control method. Background technique [0002] Anaerobic biological treatment is a common method for treating high-concentration organic wastewater. However, high-concentration organic wastewater produced by industries such as dairy products, explosives, fertilizers, nuclear industry, and landfills often contains a large amount of nitrate (more than 200mgNO 3 - -N / L), so the denitrification problem needs to be considered in the traditional anaerobic treatment of organic matter. After traditional anaerobic digestion, a separate denitrification process is required. However, this method is not economical. First, because COD has been anaerobically removed, an additional carbon source is required, which increases economic and operating costs; second: The anaerobic dige...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F101/16C02F101/30
CPCC02F3/30C02F2101/163C02F2101/30C02F2209/08C02F2301/043
Inventor 周鑫葛大令阴泽阳
Owner TAIYUAN UNIV OF TECH
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