CN2443374Y - Flow-type sensor for continuously measuring BOD - Google Patents
Flow-type sensor for continuously measuring BOD Download PDFInfo
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- CN2443374Y CN2443374Y CN 00257536 CN00257536U CN2443374Y CN 2443374 Y CN2443374 Y CN 2443374Y CN 00257536 CN00257536 CN 00257536 CN 00257536 U CN00257536 U CN 00257536U CN 2443374 Y CN2443374 Y CN 2443374Y
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Abstract
The utility model relates to a flow-type sensor for continuously measuring biochemical oxygen demand, which is composed of a flow cell and three electrode bodies, wherein the step point of a cell opening of the flow cell is provided with a mycoderma bag and a supporting bowl of the mycoderma bag; three electrode cores of the three electrode bodies are arranged in an electrode shell, test terminals of the three electrode cores and the front end of the electrode shell are all wrapped in an oxygen film, and the outside of the oxygen film is sealed at the electrode shell by an oxygen film sleeve ring, a rubber ring and a fastening cover in sequence. The three electrode cores and the electrode shell are mutually fixed by a sealing cover, and the test terminals of the three electrode bodies are in spiral tenon joint with the flow cell. The three electrode cores are respectively provided with a gold working electrode, a platinum counter electrode and a silver/ silver chloride reference electrode. The utility model has the advantages of stable electrode, good electrode repeatability, short electrode balancing time and large mechanical strength, which can tightly cover microbial films.
Description
The utility model belongs to field of biosensors, is a kind of flow type tie-in biochemical oxygen demand sensor.
Organic composition more complicated in sanitary sewage and the industrial waste water, and their harm is mainly caused by the consumption of oxygen.It is bigger to measure organic difficulty separately, so in fact adopt indexs such as BOD, chemical oxygen demand (COD), total organic carbon, total oxygen demand to represent the content of organic contaminant.
Biochemical oxygen demand, the quantity (mg/litre) of expression water pollutant required consumption molecular oxygen when microorganism is decomposed, its biochemical reaction and temperature relation are close, during mensuration generally with 20 ℃ as temperature standard.Generally, be called BOD5 with five days standard time as the mensuration biochemical oxygen demand.The aerobic value of water mesophytization is high more, and organic contaminant content is high more in the expression water.And biochemical oxygen demand can more correctly reflect the oxygen amount that consumes when oxidation operation decomposes in the water, and the degree of environmental pollution correctly is described.But the shortcoming of five days methods of biochemical oxygen demand is that minute is long, and the reflection environmental problem is untimely, can not make correct evaluation at short notice to the degree of purification in the sewage pollution degree or the process of disposing of sewage.
In order to reflect the biological aerobic value fast, appropriate authority is all at method and the instrument of developing fast measuring biochemical oxygen demand value both at home and abroad.
My company has developed biochemical oxygen demand sensor, this sensor because three electrodes disperse use in 1996, so electrode instability, electrode representative not enough, the electrode equilibration time is long, electrode bad mechanical strength, microbial film cover imprecision, can not reflect the oxygen consumption degree on the whole microbial film, trace it to its cause:
1, electrode instability is owing to have one deck liquid film layer as thin as a wafer between gold electrode and the permeable membrane.Electrode in the past is difficult to constant on a relative position, and whenever mobile one-time electrode all can cause the change of relative position, and returning to original constant position needs for a long time;
2, electrode is representative not enough, and it is too poor to refer to the symmetry between batch different electrodes, and this is because in the former three-electrode system, the relative position shakiness of three electrodes in electrolytic cell causes;
3, microbial film covers tight, electrode bad mechanical strength, can not reflect the oxygen consumption degree on the whole microbial film, is because test solution is not flow type, and its liquid cup is often changed the problems such as the electrode test balance is bad that cause.
The purpose of this utility model is, provides a kind of electrode stable, and the electrode reappearance is good, and the electrode equilibration time is short, and physical strength is big, can tightly cover the flow type tie-in biochemical oxygen demand sensor of microbial film.
Above-mentioned purpose is achieved through the following technical solutions: a kind of flow type tie-in biochemical oxygen demand sensor is made of flow cell and three electrode body; Its flow cell pond mouth step is disposed and is put mycoderm bag tray and mycoderm bag; Three electrode cores of three electrode body place in the utmost point shell, and inclusion is within the oxygen film in the lump for the test cap of its three electrode cores and utmost point shell front end, and the oxygen film outside is successively by oxygen Membrane cover ring, cushion rubber and the dried utmost point shell of fastening cap seal place; Capping interfixes three electrode cores and utmost point shell; The test cap of three electrode body and flow cell are the spiral joggle; Three electrode cores are provided with metal working respectively and make electrode, platinum to electrode and silver/silver chloride contrast electrode.
Metal working is collar plate shape and the test cap that is arranged on three electrode cores as electrode in described three electrode cores, its polar filament one termination disk, and the other end penetrates the pole piece core body and draws through three utmost points; Platinum is communicated with as electrode with metal working through three utmost points lead-in wire and pole piece core body and after being around in the some circles in pole piece termination the polar filament of electrode; Silver/silver chloride contrast electrode passes three utmost points lead-in wire and the pole piece core body is positioned at pole piece core body sidewall.
Leave the fluid injection space between described three electrode cores and the utmost point shell, and on utmost point shell wall, have liquid injection hole.
Leave polar filament on the described three electrode cores core bodys and wear discharge hole.
Described flow cell pool wall has runner pipe.
Characteristics of the present utility model are:
1, the utility model adopts the continuous sample introduction mode that flows, dismountable flow cell and biochemical oxygen demand sensor one integrated mass, constituted fast measuring biochemical oxygen demand sensor continuously, thereby overcome in traditional static discontinuous measurement method, owing to measure the measuring error that factor such as dissolved oxygen DO imbalance in the liquid causes.
2, the flat light of noble metal working electrode surface is slided, and is difficult for aging corrosion, is suitable for the continuous streaming sample introduction mode, and energy rapid and accurate determination biochemical oxygen demand, has the characteristics of long service life.
3, three electrode core bodys of the present utility model are integrated; Metal working does that electrode area is suitable, and platinum is to electrode, and silver/silver chloride contrast electrode riding position is reasonable, and compact conformation can reduce the electrode internal resistance, has also reduced the use amount of precious metal, makes maintenance, maintenance work more convenient simultaneously.
4, the design of mycoderm bag and employing make the effect of microorganism layer more even more representative.Simultaneously can prevent the loss of bacterial classification, thereby prolong the serviceable life of mycoderm bag.As long as deposit method is suitable, serviceable life of mycoderm bag even be 1 year, and can use repeatedly.
Embodiment of the present utility model is described in detail in detail below:
Accompanying drawing flow type tie-in biochemical oxygen demand sensor construction synoptic diagram.
(circulate among pond and three electrode body are spiral joggle mode)
As shown in Figure 1, electrode 1, platinum are made in metal working to be passed lead-in wire 11 to three polar filaments of electrode 2 and silver/silver chloride contrast electrode 3 and stretches in three electrode cores 4, wherein the test cap that electrode 1 places three electrode cores 4 is made in the collar plate shape metal working, polar filament is communicated with the disk that electrode 1 is made in metal working, platinum to the polar filament of electrode 2 through three electrode cores, 4 front ends and make electrode 1 with metal working after being around in three electrode cores, 4 core body 4-5 circle and be communicated with; The polar filament of silver/silver chloride contrast electrode 3 is worn the core body side-walls that three electrode cores 4 were passed and were positioned at discharge hole 10 places at the core body of three electrode cores 4.Then three electrode cores 4 are inserted in the utmost point shell 9, lead-in wire 11 ends of its three electrode cores 4 are fixed three electrode cores 4 and utmost point shell 9 and locking with capping 12; Its test lead is wrapped in metal working with oxygen film 7 and does electrode 1 and utmost point shell 9 terminations, and oxygen film 7 outers are anchored on utmost point shell 9 step places with cushion rubber 5 and oxygen Membrane cover ring 6 earlier, do fastening at last with 8 pairs of oxygen films 7 of fastening cover, oxygen Membrane cover ring 6 again.
Leave turnover runner pipe 15 among its Fig. 1 on flow cell 14 pool walls of sensor, be equipped with mycoderm bag tray 13 at the step place of flow cell 14, its mycoderm bag 12 is placed on the indentation, there of mycoderm bag tray 13 and places the Chi Kou of flow cell 14, in three electrode body are inserted flow cell 14 and by behind the screw thread mouth joggle, its oxygen film 7, electrode 1 is made in metal working and platinum all touches with mycoderm bag surface mutually to electrode 2, the another side of its mycoderm bag 12 then with flow cell 14 ponds in tested liquid phase touch, test solution is done one-in-and-one-out at runner pipe 15 and is circulated to guarantee the test effect accurate, and inject electrolytic solution by liquid injection hole 10 in the fluid injection space between three electrode cores 4 and the utmost point shell 9, make silver/silver chloride contrast electrode 3 make electrode 1 with metal working, platinum provides test data accurately with test solution simultaneously to electrode 2.
Claims (5)
1, a kind of flow type tie-in biochemical oxygen demand sensor is characterized in that, is made of flow cell and three electrode body; Its flow cell pond mouth step is disposed and is put mycoderm bag tray and mycoderm bag; Three electrode cores of three electrode body place in the utmost point shell, and inclusion is within the oxygen film in the lump for the test cap of its three electrode cores and utmost point shell front end, and the oxygen film outside is successively by oxygen Membrane cover ring, and cushion rubber and fastening cover are encapsulated in utmost point shell place; Capping interfixes three electrode cores and utmost point shell; The test cap of three electrode body and flow cell are the spiral joggle; Three electrode cores are provided with metal working respectively and make electrode, platinum to electrode and silver/silver chloride contrast electrode.
2, flow type tie-in biochemical oxygen demand sensor according to claim 1, it is characterized in that, metal working is collar plate shape and the test cap that is arranged on three electrode cores as electrode in described three electrode cores, its polar filament one termination disk, and the other end penetrates the pole piece core body and draws through three utmost points; Platinum is communicated with as electrode with metal working through three utmost points lead-in wire and pole piece core body and after being around in the some circles in pole piece termination the polar filament of electrode; Silver/silver chloride contrast electrode passes three utmost points lead-in wire and the pole piece core body is positioned at pole piece core body sidewall.
3, flow type tie-in biochemical oxygen demand sensor according to claim 1 is characterized in that, leaves the fluid injection space between described three electrode cores and the utmost point shell, and have liquid injection hole on utmost point shell wall.
4, flow type tie-in biochemical oxygen demand sensor according to claim 2 is characterized in that, leaves polar filament on the described three electrode cores core bodys and wears discharge hole.
5, flow type tie-in biochemical oxygen demand sensor according to claim 1 is characterized in that described flow cell pool wall has runner pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00257536 CN2443374Y (en) | 2000-10-27 | 2000-10-27 | Flow-type sensor for continuously measuring BOD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00257536 CN2443374Y (en) | 2000-10-27 | 2000-10-27 | Flow-type sensor for continuously measuring BOD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2443374Y true CN2443374Y (en) | 2001-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00257536 Expired - Fee Related CN2443374Y (en) | 2000-10-27 | 2000-10-27 | Flow-type sensor for continuously measuring BOD |
Country Status (1)
| Country | Link |
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| CN (1) | CN2443374Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957356A (en) * | 2010-08-13 | 2011-01-26 | 北京工业大学 | Biochemical oxygen demand BOD soft measurement method based on elastic radical basis function neural network |
| CN109613101A (en) * | 2018-11-27 | 2019-04-12 | 浙江工商大学 | A kind of electrochemical detector for the detection of numb taste |
-
2000
- 2000-10-27 CN CN 00257536 patent/CN2443374Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957356A (en) * | 2010-08-13 | 2011-01-26 | 北京工业大学 | Biochemical oxygen demand BOD soft measurement method based on elastic radical basis function neural network |
| CN101957356B (en) * | 2010-08-13 | 2013-07-10 | 北京工业大学 | Biochemical oxygen demand BOD soft measurement method based on elastic radical basis function neural network |
| CN109613101A (en) * | 2018-11-27 | 2019-04-12 | 浙江工商大学 | A kind of electrochemical detector for the detection of numb taste |
| CN109613101B (en) * | 2018-11-27 | 2021-04-16 | 浙江工商大学 | Electrochemical detector for numb taste detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Saipu Environmental Protection Science and Technology Development Co., Ltd., Tia Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20010815 Termination date: 20091127 |