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Laboratory automatic biochemical oxygen demand BOD5 detector and automatic measurement method

A biochemical oxygen consumption and measuring instrument technology, applied in the direction of instruments, analytical materials, etc., can solve the problems that the accuracy and processing capacity cannot meet the requirements of environmental monitoring, and the operation is inconvenient.

Inactive Publication Date: 2012-10-03
JIANGSU JIANGFEN ELECTROANALYTICAL INSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is very inconvenient for the experimenters to operate, and the accuracy and processing capacity of the experimental data are far from meeting the environmental monitoring requirements of the increasing water samples.

Method used

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  • Laboratory automatic biochemical oxygen demand BOD5 detector and automatic measurement method
  • Laboratory automatic biochemical oxygen demand BOD5 detector and automatic measurement method
  • Laboratory automatic biochemical oxygen demand BOD5 detector and automatic measurement method

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Embodiment Construction

[0012] In order to check the accuracy of the instrument, it is usually necessary to first test the standard solution (referred to as the standard solution), which is also called the process of chemically calibrating the instrument. The standard solution adopted in the present invention is the grape-grain standard solution after inoculation using the domestic sewage supernatant as the inoculation water. For its preparation, please refer to figure 2 .

[0013] Put the pre-prepared standard solution and inoculation water into the reagent bottles respectively, and place all the test water samples and culture bottles in the specified positions and connect the solution connecting lines (see figure 1 ). in:

[0014] (1) The alkali absorption cup in the upper part of the culture bottle is not only a container for storing soda ash (or liquid), but also used as a sealing gasket for the culture bottle. The alkali absorption cup has several holes that communicate with the air in the c...

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Abstract

A laboratory automatic BOD5 detector is mainly composed of a hardware part and a software part. The hardware part is composed of a computer, a computer communication interface, a multi-way solenoid valve pump, signal acquisition and processing units, culture flasks, pipelines and the like; The software can be applied on windows platform, and various parameters of experiments are divided into a type of system default and a type of free input by users. The detector can realize automatic injection, automatic drainage, automatic cleaning, and automatic saving and printing of data and curves of experimental results for water samples. The detector has the advantages that the tedious work of experimenters is greatly reduced, the operation is relatively convenient and simple, and the experimental data is relatively accurate and reliable.

Description

technical field [0001] The invention relates to the field of measurement of biochemical oxygen consumption BOD5, especially the field of automatic measurement of BOD5 used in laboratories. Background technique [0002] Biochemical oxygen demand, referred to as biochemical oxygen demand, often recorded as BOD, refers to the amount of free dissolved oxygen consumed by microorganisms to decompose certain oxidizable substances in a certain volume of water, especially organic substances, within a certain period of time. It is a comprehensive indicator reflecting the content of organic pollutants in water. If the time for biological oxidation is five days, it is called five-day biochemical oxygen demand (BOD5). BOD5 refers to the amount of free dissolved oxygen consumed by aerobic microorganisms to oxidize and decompose organic or inorganic matter per unit volume of water when the water sample to be tested is incubated at a constant temperature in an incubator for five days under...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N35/00
Inventor 王根忠丁秋兰
Owner JIANGSU JIANGFEN ELECTROANALYTICAL INSTR