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Method and device for continuously and quickly measuring biochemical oxygen demond

A measurement method and rapid technology, applied in the direction of measurement device, biochemical cleaning device, biochemical equipment and method, etc., can solve the problem of taking a long time

Inactive Publication Date: 2003-05-07
SK ENERGY CO LTD (KR)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the installation of the device, a period of waiting time should be given until the microorganisms on the carrier are ready for use, therefore, it takes a considerable period of time to be ready to measure the BOD of the sample

Method used

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  • Method and device for continuously and quickly measuring biochemical oxygen demond
  • Method and device for continuously and quickly measuring biochemical oxygen demond
  • Method and device for continuously and quickly measuring biochemical oxygen demond

Examples

Experimental program
Comparison scheme
Effect test

Embodiment I

[0096] figure 1 The device is placed at the discharge port of the wastewater treatment device of a certain research center. 24 hours before installation, put about 400ml with uniform 5×5×5mm 3 The sized carrier was poured into a 2 liter flask which already contained the following ingredients: 5g yeast extract, 5g glucose, 5g sucrose, 100ml activated sludge and 1 liter of water. Shake overnight under aerated conditions to culture the microorganisms and immobilize them on the carrier.

[0097] After the plant is set up, the carrier is placed in the reactor which is then injected into the plant effluent. The unit operates under the following conditions:

[0098] —The discharge water inlet flow rate is 0.5l / h

[0099] —Culture solution concentration 5g glucose / l

[0100] —Culture fluid flow rate 3.6ml / h

[0101] —Cultivation temperature 30.0℃

[0102] —Sample tank temperature 30.0°C

[0103] — Stirring speed 600rpm

[0104] —Aeration rate 0.7l / ...

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Abstract

There are disclosed a continuous, quick measurement method of BOD and an apparatus therefor. It comprises a sample tank in which a sample is prepared suitably for the measurement, a reactor in which microorganisms maintain their activity, a medium reservoir which contains nutrients for the growth of the microorganisms, pumps for transferring liquids, and a microprocessor which controls the operation of all means including a magnetic stirrer for mixing the liquid in the reactor and diagnoses of the apparatus itself. Using the apparatus, the method comprises a continuous culture stage, an endogenous respiration stage, a endogenous respiration rate-measuring stage, a sample feeding stage and a BODq measuring stage. The apparatus can detect BOD in one hour and is very low in error rate. Further, because microorganisms can be continuously cultured, the apparatus is semi-permanent, easy to manage, low in cost and suitable to be operated at treatment site.

Description

technical field [0001] In general, the present invention relates to a method and device for continuously and rapidly measuring biochemical oxygen demand (hereinafter referred to as "BOD"). More specifically, the present invention relates to a method that can be used to automatically measure BOD within 20 minutes using the above-mentioned device. Background technique [0002] BOD refers to the amount of oxygen required to oxidize organic substances that can be decomposed by the metabolism of aerobic microorganisms. Since BOD can reflect the amount of organic substances present in the solution, it is the most important indicator of water pollution and has the following meanings. [0003] When sewage or waste water is discharged into rivers by households or factories, the organic matter contained therein is mainly decomposed by aerobic microorganisms living in rivers. For this reason, dissolved oxygen in rivers is consumed, thereby creating a hars...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12Q1/06C12M1/36C12Q1/02G01N33/18
CPCG01N33/1806G01N33/1866C12Q1/02Y10T436/209163C12Q1/06
Inventor 尹京植朴龙细金亨灿李熔泽黄列淳姜圣允郑起男金镇喆
Owner SK ENERGY CO LTD (KR)
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