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Method for directly measuring organic matter degrading amount of activated sludge

A technology for activated sludge and organic matter, which is applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of lack of measuring activated sludge to degrade organic matter, unable to accurately reflect sludge activity, etc., and achieve the effect of reliable measurement principle.

Inactive Publication Date: 2014-05-07
HENAN NORMAL UNIV
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Problems solved by technology

Now it is mainly reflected by the removal rate of organic matter in wastewater. Although it can indirectly indicate the activity of sludge, the above measurement method has a prerequisite, that is, the removed organic matter is completely degraded by microorganisms.
If the removal of organic matter is a combination of microbial degradation and other removal mechanisms, the organic matter removal rate of wastewater will not accurately reflect the sludge activity
At present, there is a lack of direct experimental means to measure the amount of organic matter degraded by activated sludge.

Method used

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  • Method for directly measuring organic matter degrading amount of activated sludge
  • Method for directly measuring organic matter degrading amount of activated sludge
  • Method for directly measuring organic matter degrading amount of activated sludge

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Embodiment Construction

[0016] like figure 1 As shown, a device for measuring the amount of carbon dioxide produced by aerobic microbial degradation of organic matter includes a closed reactor 1 and a carbon dioxide measurement recorder 2; the top of the closed reactor 1 is provided with an opening 13 communicating with the outside, placed in a closed reaction A sealing device 11 and an exhaust device 12 that isolate the inside of the airtight reactor from the outside in the opening 13 on the top of the reactor; In the opening 15 communicating with the outside at the bottom of the reactor 1, the sealing device 14 that isolates the inside of the closed reactor 1 from the outside, the exhaust device 12 is connected with the carbon dioxide measurement recorder 2; There is an aeration device4.

[0017] The sealing device 11 and the sealing device 14 in the above device can be a rubber plug, and the material in the closed reactor can be put into or discharged after the rubber plug is pulled out.

[001...

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Abstract

The invention discloses a method for directly measuring the organic matter degrading amount of activated sludge. The method comprises the following steps of: at normal temperature, putting a mixed solution of the activated sludge to be measured and waste water into a sealed reactor; aerating at the bottom of the sealed reactor with purified oxygen, and measuring and recording the carbon dioxide concentration at an exhaust apparatus on the upper part of the sealed reactor; emptying the sealed reactor, and adding the same volume of parallel sample of the activated sludge to be measured and waste water; aerating at the bottom of the sealed reactor with purified nitrogen, and measuring and recording the carbon dioxide concentration at the exhaust apparatus on the upper part of the sealed reactor; respectively computing the carbon dioxide yield during aeration of the purified oxygen and the purified nitrogen within a certain time slot by using an integral of a product of a gas supply amount and the carbon dioxide concentration within a time slot; computing the carbon dioxide yield during organic matter degradation of the activated sludge by using a difference value; and computing the organic matter degrading amount of the activated sludge. The method has the advantage that the organic matter degrading amount of a unit volume of the activated sludge can be directly measured.

Description

technical field [0001] The invention relates to the technical field of measuring the amount of organic matter degraded by activated sludge, in particular to a method for directly measuring the amount of organic matter degraded by activated sludge. Background technique [0002] Activated sludge method is a commonly used method in wastewater biological treatment technology, which has the advantages of less consumption, high efficiency, low cost, convenient and reliable process operation and management, and no secondary pollution. The determination of sludge activity is an important indicator to characterize the operation status in engineering. Now it is mainly reflected by the removal rate of organic matter in wastewater. Although it can indirectly indicate the activity of sludge, the above-mentioned determination method has a prerequisite, that is, the removed organic matter is completely degraded by microorganisms. If the removal of organic matter is a combination of microb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
Inventor 崔延瑞崔凤灵马尧天吴青轩小朋
Owner HENAN NORMAL UNIV
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