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Oxygen availability gas-phase chromatography detecting method and apparatus for aerating tank

A detection method and gas chromatography technology are applied in the field of a new method for measuring the biological oxygen utilization rate of aeration tanks and the field of matching gas collecting devices, which can solve the problem of not being able to specifically reflect the oxygen utilization conditions of the aeration tank, time-consuming, laborious, and oxygen utilization rate. Can not timely and accurately reflect the oxygen utilization of the aeration tank and other problems, to achieve the effect of eliminating the mixing effect, simple production, and adjustable specifications

Inactive Publication Date: 2005-07-27
DALIAN JIAOTONG UNIVERSITY
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Problems solved by technology

At present, the oxygen utilization rate of the aeration tank is generally obtained indirectly by measuring the oxygen consumption rate of the biological sludge under the steady state conditions on site, and the oxygen consumption rate needs to be obtained by measuring the degradation rate of organic matter (COD) by chemical analysis methods. , the specific measurement process is not only time-consuming and laborious, but also the oxygen utilization rate obtained from it cannot timely and accurately reflect the oxygen utilization of the aeration tank, let alone specifically reflect the oxygen utilization of a certain aeration area in the aeration tank

Method used

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  • Oxygen availability gas-phase chromatography detecting method and apparatus for aerating tank
  • Oxygen availability gas-phase chromatography detecting method and apparatus for aerating tank
  • Oxygen availability gas-phase chromatography detecting method and apparatus for aerating tank

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Embodiment 1

[0022] Example 1. The gas overflowing from the sewage treatment aeration tank is collected and eliminated by using the gas collecting device formed by the air bag (1), the defoaming bottle (2), the air pipe (3) and the gas collecting cover (4) connected in sequence. After bubble treatment, the relative contents of oxygen and nitrogen in the intake and overflow gas of the aeration tank were measured by gas chromatograph, and the ratio of the relative content of oxygen and nitrogen in the intake and overflow gas was used to calculate the biological oxygen utilization rate of the aeration tank as follows:

[0023] E = φ 1 - φ 2 φ 1 × 100 %

[0024] In the formula, E——oxygen utilization rate;

[0025] φ 1 - Oxygen in the intake air

[00...

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Abstract

A detection method includes utilizing gas collection device to collect gas overflowed from aeration basin of polluted water and then defoaming the collected gas, measuring out content of oxygen and nitrogen in inlet air and overflowed air at aeration basin by gas chromatograph, calculating out utilization rate of biological oxygen in aeration basin by utilizing content ratio of oxygen to nitrogen in inlet air and overflowed air.

Description

Technical field [0001] The invention relates to the technical field of monitoring and control in wastewater treatment projects. It is a new method for measuring the biological oxygen utilization rate of an aeration tank and its supporting gas collecting device. Background technique [0002] When treating organic wastewater by biological methods, the biological oxygen utilization rate (E) of the aeration tank in steady-state operation reflects the ability and working status of sludge microorganisms to degrade pollutants. At present, the oxygen utilization rate of aeration tanks is generally obtained indirectly by measuring the oxygen consumption rate of biological sludge under steady-state conditions on site. The oxygen consumption rate needs to be determined by measuring the degradation rate of organic matter (COD) through chemical analysis methods. , the specific measurement process is not only time-consuming and laborious, but also the oxygen utilization rate derived from ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/10G01N30/02G01N30/06G01N30/86G01N30/88
Inventor 穆军章非娟李彦生朱秀华张耀斌
Owner DALIAN JIAOTONG UNIVERSITY
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