CN206002522U - A kind of off-line measurement SDI device - Google Patents
A kind of off-line measurement SDI device Download PDFInfo
- Publication number
- CN206002522U CN206002522U CN201620815046.3U CN201620815046U CN206002522U CN 206002522 U CN206002522 U CN 206002522U CN 201620815046 U CN201620815046 U CN 201620815046U CN 206002522 U CN206002522 U CN 206002522U
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- China
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- sdi
- water tank
- water
- analyzer
- circulating pump
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Abstract
This utility model provides a kind of off-line measurement SDI device, and including go-cart, water tank, SDI analyzer and circulating pump, described water tank is fixed in go-cart；Described circulating pump one end is connected with water tank bottom, and other end draining is to tank top；Described SDI analyzer one end is connected with circulating pump, one end draining.Off-line measurement SDI device described in the utility model can use same set of SDI test system in different water sample test points, due to devising mobile handcart, the water tank of open type, test process does not need remove and install equipment, also without the water being provided with pressure, directly SDI measurement can be carried out to various water samples.Avoid the overlapping investment of measuring apparatus simultaneously, and operating process simple and fast, improve the utilization rate of equipment instrument.
Description
Technical field
This utility model is related to water-treatment technology field, particularly relates to a kind of off-line measurement SDI device.
Background technology
SDI is pollution index (Silting Density Index) value, and during anti-penetration wastewater disposal, SDI value is to survey
Determine one of important indicator of counter-infiltration system water inlet；Represent the material of granule in water, colloid and other energy clog reverse osmosis film
Content, is the Main Means whether inspection pretreatment system water outlet reaches reverse osmosis requirement.Its size is to reverse osmosis membrane
The row life-span of fortune is most important.
Standard method of test recognized within the industry is ASTM method (4189-95) at present.Main method is to allow water sample to pass through
47mm diameter, 0.45um aperture film, test its flow rate attenuation.Why select the film in 0.45um aperture, be because in this hole
Under footpath, colloidal substance is easier to block film than grit material (as sand, incrustation scale etc.).
The decay of flow velocity is converted into the numerical value between 1 to 100, i.e. SDI value.SDI value is lower, and water blocks to the pollution of film
Trend is less.SDI value is higher, and water is bigger to the pollution clogging tendency of film.
At present, the SDI analyzer of use, produces in strict accordance with U.S.ASTM standard, and core technology is provided by the U.S., core
Part adopts the U.S. to originate in material.
SDI mensure is the mensure based on blockage factor (PI, %).Mensure is on 0.45 μm of Φ 47mm of microporous filter membrane
It is continuously added to the determined water of certain pressure (30PSI is equivalent to 2.1kg/cm), time Ti needed for 500ml water filtered to obtain in record
Filter to obtain time Tf (second) needed for 500ml water after (second) and 15 minutes again, try to achieve reverse osmosis membrane pollution index SDI as the following formula：
SDI=[(1-Ti/Tf) * 100]/15
In formula, 15 is 15 minutes.When the polluter in water is higher, drainage amount can use 100ml, 200ml, 300ml etc.,
Can be changed to interval time 10 minutes, 5 minutes etc., 15 in computing formula are also accordingly adjusted to 10,5.
At present, most of SDI analyzer all installs instrument using online, when needing to measure SDI value, enters according to assay method
Row on-line determination.Therefore one measuring point, needs to install a SDI analyzer, for the more water treatment system of measuring point, there is peace
The problems such as dress SDI analyzer is many, investment increases.Simultaneously as needing 2.1kg/cm during measurement SDI value2Pressure, therefore,
The SDI value of water in open-top receptacle cannot be measured.Need to ultrafiltration water tank, ultrafiltration entrance under unusual service condition at present, or even middle water
Water in case carries out water quality detection, to determine machine operation.Therefore existing on-line determination instrument cannot meet this will
Ask.
Utility model content
The purpose of this utility model is aiming at the situation of above-mentioned prior art it is proposed that a kind of off-line measurement SDI device,
In order to solve the limitation in SDI continuous mode place, to guarantee quick and precisely to measure the SDI value of detected water sample, it is combustion adjustment
Infallible data is provided.
The purpose of this utility model is achieved through the following technical solutions：A kind of off-line measurement SDI device, including pushing away
Car, water tank, SDI analyzer and circulating pump, described water tank is fixed in go-cart；Described circulating pump one end is connected with water tank bottom,
Other end draining is to tank top；Described SDI analyzer one end is connected with circulating pump, one end draining.
Further, described SDI analyzer and circulating pump are interconnected by pvc pipe.
Further, it is provided with inlet regulating valve between described SDI analyzer and circulating pump.
Further, described water tank is open-type cistern.
The beneficial effects of the utility model are：Off-line measurement SDI device described in the utility model can be in different water
Sample test point can use same set of SDI test system, and due to devising mobile handcart, the water tank of open type, in test process
In do not need to remove and install equipment the water it is not required that being provided with pressure, directly SDI measurement can be carried out to various water samples.Simultaneously
Avoid the overlapping investment of measuring apparatus, and operating process simple and fast, improve the utilization rate of equipment instrument.
Brief description
Fig. 1 is a kind of this utility model off-line measurement SDI apparatus structure schematic diagram.
Description of reference numerals：1- go-cart, 2- water tank, 3-SDI analyzer, 4- circulating pump, 5- regulating valve, the water inlet of 6- analyzer
Door, 7- pump entry door, 8- circulating-pump outlet door.
Specific embodiment
Below in conjunction with the accompanying drawings a kind of this utility model off-line measurement SDI device is described further：This embodiment is only used
In explanation this utility model rather than restriction scope of the present utility model, those skilled in the art are to of the present utility model various
The modification of the equivalent form of value all falls within the application claims limited range.
As shown in figure 1, a kind of off-line measurement SDI device described in the utility model, measure including go-cart 1, water tank 2, SDI
Instrument 3 and circulating pump 4, described water tank 2 is fixed in go-cart 1；Described circulating pump 4 one end is connected with water tank 2 bottom, other end draining
To water tank 2 top；Described SDI analyzer 3 one end is connected with circulating pump 4, one end draining.
Described SDI analyzer 3 and circulating pump 4 are interconnected by pvc pipe.
It is provided with inlet regulating valve 5 between described SDI analyzer 3 and circulating pump 4.
Described water tank 2 is open-type cistern.
Water tank 2 is welded in go-cart 1, and circulating pump 4, SDI analyzer pass through pvc pipe road, valve connects.Go-cart 1 can be square
Just, time saving and energy saving by mobile for equipment to needing to measure the place of SDI；Water tank 2 can store need measurement water sample it is not necessary to
Carry out interim pipeline connection；And water sample circulation is got up by circulating pump 4, partly pass through SDI analyzer 3, remaining returns to water tank 2
In.
Existing SDI analyzer is fixedly mounted, needs system to provide stable pressure, therefore cannot measure uncovered
The SDI value of water in container.Off-line measurement SDI device described in the utility model solves this problem well, open type
Water tank, not needing to remove and install equipment the water it is not required that being provided with pressure in test process, can directly various water samples be entered
Row SDI measures.The water sample that need to measure flows directly in the water tank 2 of device, is circulated by circulating pump 4, is partly surveyed by SDI
Amount instrument 3, remainder returns in water tank 2.
Off-line measurement SDI device described in the utility model does not need the connection of pipeline, dismounting, simple to operate, convenient, section
Save the cost of SDI equipment, improve the utilization rate of SDI analyzer.
Claims (4)
1. a kind of off-line measurement SDI device is it is characterised in that include go-cart (1), water tank (2), SDI analyzer (3) and circulating pump
(4), described water tank (2) is fixed in go-cart (1)；Described circulating pump (4) one end is connected with water tank (2) bottom, other end draining
To water tank (2) top；Described SDI analyzer (3) one end is connected with circulating pump (4), one end draining.
2. a kind of off-line measurement SDI device according to claim 1 is it is characterised in that described SDI analyzer (3) and following
Ring pump (4) is interconnected by pvc pipe.
3. a kind of off-line measurement SDI device according to claim 2 is it is characterised in that described SDI analyzer (3) and following
It is provided with inlet regulating valve (5) between ring pump (4).
4. a kind of off-line measurement SDI device according to claim 1 is it is characterised in that described water tank (2) is open type
Water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620815046.3U CN206002522U (en) | 2016-07-29 | 2016-07-29 | A kind of off-line measurement SDI device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620815046.3U CN206002522U (en) | 2016-07-29 | 2016-07-29 | A kind of off-line measurement SDI device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206002522U true CN206002522U (en) | 2017-03-08 |
Family
ID=58201473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620815046.3U Expired - Fee Related CN206002522U (en) | 2016-07-29 | 2016-07-29 | A kind of off-line measurement SDI device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206002522U (en) |
-
2016
- 2016-07-29 CN CN201620815046.3U patent/CN206002522U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170308 Termination date: 20170729 |