CN104155204A - Filtering method for suspended matters in water - Google Patents
Filtering method for suspended matters in water Download PDFInfo
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- CN104155204A CN104155204A CN201410403317.XA CN201410403317A CN104155204A CN 104155204 A CN104155204 A CN 104155204A CN 201410403317 A CN201410403317 A CN 201410403317A CN 104155204 A CN104155204 A CN 104155204A
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- microfiltration membrane
- weight
- weighing
- filter
- drying
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Abstract
The invention provides a filtering method for suspended matters in water. The method comprises the following steps: clamping a microfiltration membrane with a pair of tweezers, putting the microfiltration membrane into a constant-weight weighing bottle, transferring the microfiltration membrane to a baking oven for drying, then cooling the microfiltration membrane to room temperature, weighing the weight of the microfiltration membrane and carrying out repeated drying, cooling and weighing until the difference between weight values obtained in two weighing is less than 0.2 mg; correctly putting the obtained microfiltration membrane with a constant weight on the filter membrane pallet of a filter membrane filter, covering a matching funnel, fixing the funnel with a clip, wetting the microfiltration membrane with distilled water and carrying out continuous suction filtration; and weighing a sample for suction filtration, continuously washing the sample with distilled water three times, continuing suction filtration to remove a trace amount of moisture, taking the microfiltration membrane out, putting the microfiltration membrane in the original constant-weight weighing bottle, transferring the microfiltration membrane to the baking oven for drying, then transferring the microfiltration membrane into a drier, then cooling the microfiltration membrane to room temperature, weighing the weight of the microfiltration membrane and carrying out repeated drying, cooling and weighing until the difference between weight values obtained in two weighing is less than 0.4 mg. According to the invention, primary drying time is prolonged, drying frequency is reduced, time for drying is shortened, and work efficiency is improved.
Description
Technical field
The present invention relates to a kind of filter method, refer to especially the filter method of suspension in a kind of water.
Background technology
Suspension refers to be solids in the water of 0.45 μ m filter membrane by aperture.According to " water and effluent monitoring analytical approach ", the standard method of analysis of suspended matter determination is filter membrane method.In actual applications, because the mensuration of suspension is actually a kind of condition test, sample is difficult for catching up with most water after filtration at 105-110 DEG C of temperature, needs to dry often length consuming time.The present invention contrasts different for the first time drying times, draws best experimental period, improves accuracy and work efficiency.
Summary of the invention
In view of this, the deduct a percentage filter method of suspension in a kind of water of the present invention, has reduced the number of times of drying, and has saved the time, has improved work efficiency.
For solving the problems of the technologies described above, technology of the present invention by the following technical solutions:
A filter method for suspension in water, comprises the following steps:
(1) filter membrane processing
Be put in the measuring cup of constant weight with tweezers gripping miillpore filter, move in baking oven in 103-105 DEG C and dry after 1 hour, take out to put in exsiccator and be cooled to room temperature, claim its weight, repeat to dry, cooling, weigh, until the weight difference of twice weighing is less than 0.2mg;
(2) by the filter membrane pallet that is placed on the membrane filter correct miillpore filter of the constant weight obtaining, add a cover supporting funnel, and fix with clip, with the moistening filter membrane of distilled water, and continuous suction strainer;
(3) measure
Measure the sample 100mL suction filtration fully mixing, make moisture all pass through filter membrane, again with each 10mL distilled water continuous washing three times, continue suction strainer to remove traces of moisture, stop after suction strainer, the filter membrane that careful taking-up is loaded with suspension is placed in the measuring cup of former constant weight, move in baking oven and at 103-105 DEG C, dry after 1 hour and move in exsiccator, make cool to room temperature, claim its weight, repeat to dry, cooling, weigh, until the weight difference < 0.4mg of twice weighing.
Further, in described step (1), follow-up repetition drying time is all 0.5 hour.
Further, in described step (3), follow-up repetition drying time is all 0.5 hour.
In process of the present invention, to avoid continuously for a long time baking, though because easily reach constant weight like this, operate also easylier, easily cause error, likely cause filter membrane to be scorched.
The beneficial effect that the present invention compared with prior art has is: the present invention for the first time drying time extends to 1 hour, has reduced the number of times of drying, and has shortened to reach and has dried object time loss used, has improved work efficiency.
Embodiment
For allowing the more clear and intuitive understanding the present invention of those skilled in the art, below the present invention is further illustrated.
A filter method for suspension in water, comprises the following steps:
(1) filter membrane processing
Be put in the measuring cup of constant weight with tweezers gripping miillpore filter, move in baking oven and dry after 1 hour in 103-105 DEG C, taking-up is put and in exsiccator, is cooled to room temperature, claim its weight, repeat oven dry, cooling, weighing operation, repeat drying time and change 30 minutes into, until the weight difference of twice weighing is less than 0.2mg;
(2) by the filter membrane pallet that is placed on the membrane filter correct miillpore filter of the constant weight obtaining, add a cover supporting funnel, and fix with clip, with the moistening filter membrane of distilled water, and continuous suction strainer;
(3) measure
Measure the sample 100mL suction filtration fully mixing, make moisture all pass through filter membrane, again with each 10mL distilled water continuous washing three times, continue suction strainer to remove traces of moisture, stop after suction strainer, the filter membrane that careful taking-up is loaded with suspension is placed in the measuring cup of former constant weight, move in baking oven and at 103-105 DEG C, dry after 1 hour and move in exsiccator, make cool to room temperature, claim its weight, repeat oven dry, cooling, weigh, repeat drying time and change 30 minutes into, until the weight difference < 0.4mg of twice weighing.
The drying time of the present embodiment with weigh number of times as following table:
| Dry number of times | Drying time (min) | Sample 1 | Sample 2 | Sample 3 |
| 1 | 60 | 42.3512 | 47.2365 | 42.3561 |
| 2 | 30 | 42.3504 | 47.2363 | 42.3558 |
| 3 | 30 | 42.3503 | ? | ? |
| Number of times is dried in the present invention | ? | 3 | 2 | 2 |
Result shows: drying time is adjusted into 60min for the first time, by reducing the number of times of drying, increases work efficiency compared with classic method.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. a filter method for suspension in water, is characterized in that comprising the following steps:
(1) filter membrane processing
Be put in the measuring cup of constant weight with tweezers gripping miillpore filter, move in baking oven in 103-105 DEG C and dry after 1 hour, take out to put in exsiccator and be cooled to room temperature, claim its weight, repeat to dry, cooling, weigh, until the weight difference of twice weighing is less than 0.2mg;
(2) by the filter membrane pallet that is placed on the membrane filter correct miillpore filter of the constant weight obtaining, add a cover supporting funnel, and fix with clip, with the moistening filter membrane of distilled water, and continuous suction strainer;
(3) measure
Measure the sample 100mL suction filtration fully mixing, make moisture all pass through filter membrane, again with each 10mL distilled water continuous washing three times, continue suction strainer to remove traces of moisture, stop after suction strainer, the filter membrane that careful taking-up is loaded with suspension is placed in the measuring cup of former constant weight, move in baking oven and at 103-105 DEG C, dry after 1 hour and move in exsiccator, make cool to room temperature, claim its weight, repeat to dry, cooling, weigh, until the weight difference < 0.4mg of twice weighing.
2. the filter method of suspension in water according to claim 1, is characterized in that: in described step (1), follow-up repetition drying time is all 0.5 hour.
3. the filter method of suspension in water according to claim 2, is characterized in that: in described step (3), follow-up repetition drying time is all 0.5 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410403317.XA CN104155204A (en) | 2014-08-15 | 2014-08-15 | Filtering method for suspended matters in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410403317.XA CN104155204A (en) | 2014-08-15 | 2014-08-15 | Filtering method for suspended matters in water |
Publications (1)
| Publication Number | Publication Date |
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| CN104155204A true CN104155204A (en) | 2014-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410403317.XA Pending CN104155204A (en) | 2014-08-15 | 2014-08-15 | Filtering method for suspended matters in water |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323798A (en) * | 2015-06-24 | 2017-01-11 | 中国石油化工股份有限公司 | Method for detecting suspended solid content of polymer containing produced water |
| CN111678833A (en) * | 2020-06-03 | 2020-09-18 | 唐山三友化工股份有限公司 | Method for measuring content of water insoluble substances in soda ash by using microporous filter membrane |
| CN112945792A (en) * | 2021-03-08 | 2021-06-11 | 唐山三友化工股份有限公司 | Washing operation method for accurately measuring high-chlorine wastewater suspended matters |
| CN113447104A (en) * | 2021-06-25 | 2021-09-28 | 成都理工大学 | Method for measuring fresh weight of miniature aquatic organisms, miniature device and application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2125159A1 (en) * | 1992-10-09 | 1994-04-28 | Brent Huntley | Assay cartridge |
| CN2722225Y (en) * | 2004-06-03 | 2005-08-31 | 北京城市排水集团有限责任公司 | Filter of suspended matter determination |
| DE102009015562A1 (en) * | 2009-03-30 | 2010-10-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Fluid filter useful in device for filtering fluid, comprises filter membrane having first main side, second main side lying opposite to first main side and micropores extending between first and second main sides, and electrode structures |
| CN103645153A (en) * | 2013-12-25 | 2014-03-19 | 天津师范大学 | Method for rapidly detecting concentration of suspended substances in inlet-outlet water of municipal sewage treatment plant |
-
2014
- 2014-08-15 CN CN201410403317.XA patent/CN104155204A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2125159A1 (en) * | 1992-10-09 | 1994-04-28 | Brent Huntley | Assay cartridge |
| CN2722225Y (en) * | 2004-06-03 | 2005-08-31 | 北京城市排水集团有限责任公司 | Filter of suspended matter determination |
| DE102009015562A1 (en) * | 2009-03-30 | 2010-10-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Fluid filter useful in device for filtering fluid, comprises filter membrane having first main side, second main side lying opposite to first main side and micropores extending between first and second main sides, and electrode structures |
| CN103645153A (en) * | 2013-12-25 | 2014-03-19 | 天津师范大学 | Method for rapidly detecting concentration of suspended substances in inlet-outlet water of municipal sewage treatment plant |
Non-Patent Citations (2)
| Title |
|---|
| 乔慧敏等: "过滤法测定水质悬浮物的影响因素分析", 《石油化工应用》, vol. 29, no. 11, 30 November 2010 (2010-11-30), pages 97 - 103 * |
| 南熙国等: "滤筒法测定水中悬浮物的实践", 《中国环境管理干部学院学报》, vol. 21, no. 1, 28 February 2011 (2011-02-28) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323798A (en) * | 2015-06-24 | 2017-01-11 | 中国石油化工股份有限公司 | Method for detecting suspended solid content of polymer containing produced water |
| CN111678833A (en) * | 2020-06-03 | 2020-09-18 | 唐山三友化工股份有限公司 | Method for measuring content of water insoluble substances in soda ash by using microporous filter membrane |
| CN112945792A (en) * | 2021-03-08 | 2021-06-11 | 唐山三友化工股份有限公司 | Washing operation method for accurately measuring high-chlorine wastewater suspended matters |
| CN113447104A (en) * | 2021-06-25 | 2021-09-28 | 成都理工大学 | Method for measuring fresh weight of miniature aquatic organisms, miniature device and application |
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Application publication date: 20141119 |