CN113155568A - Device and method for rapidly extracting phosphate from underground water - Google Patents
Device and method for rapidly extracting phosphate from underground water Download PDFInfo
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- CN113155568A CN113155568A CN202110425748.6A CN202110425748A CN113155568A CN 113155568 A CN113155568 A CN 113155568A CN 202110425748 A CN202110425748 A CN 202110425748A CN 113155568 A CN113155568 A CN 113155568A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 229910019142 PO4 Inorganic materials 0.000 title claims abstract description 44
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 title claims abstract description 44
- 239000010452 phosphate Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 60
- 238000004062 sedimentation Methods 0.000 claims abstract description 32
- 238000000605 extraction Methods 0.000 claims abstract description 31
- 239000003673 groundwater Substances 0.000 claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 239000002244 precipitate Substances 0.000 claims abstract description 7
- 239000007853 buffer solution Substances 0.000 claims description 29
- 238000005406 washing Methods 0.000 claims description 26
- 238000011010 flushing procedure Methods 0.000 claims description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 6
- 239000013049 sediment Substances 0.000 claims description 4
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 3
- 239000004695 Polyether sulfone Substances 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- UNYOJUYSNFGNDV-UHFFFAOYSA-M magnesium monohydroxide Chemical compound [Mg]O UNYOJUYSNFGNDV-UHFFFAOYSA-M 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 229920006393 polyether sulfone Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 238000001556 precipitation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 238000007789 sealing Methods 0.000 description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- WSDRAZIPGVLSNP-UHFFFAOYSA-N O.P(=O)(O)(O)O.O.O.P(=O)(O)(O)O Chemical compound O.P(=O)(O)(O)O.O.O.P(=O)(O)(O)O WSDRAZIPGVLSNP-UHFFFAOYSA-N 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000037452 priming Effects 0.000 description 4
- 239000000872 buffer Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- 238000012851 eutrophication Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
- G01N2001/4088—Concentrating samples by other techniques involving separation of suspended solids filtration
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Removal Of Specific Substances (AREA)
Abstract
本发明涉及一种快速提取地下水中磷酸盐的装置，包括通过管路依次连通的初沉池、过滤器和收集池，初沉池和过滤器之间的管路上固定安装有自吸泵；水体经初沉池沉淀，由自吸泵送至过滤器过滤后收集于收集池；还涉及一种快速提取地下水中磷酸盐的方法，具体包括以下步骤：S1：将水体进行初级过滤处理；S2：将初级过滤后的水体进行二级过滤处理；S3：向上述二级过滤后的水体中加入浓缩剂进行浓缩处理，获得磷酸盐沉淀物。本发明的有益效果是可实现地下水中磷酸盐的快速提取，以便水体中磷酸盐氧同位素的快速检测，提取效率大大提高；而且，提取装置分为不同的处置单元，可拆卸，便于现场组装使用，大大提高了其野外环境的适应能力，使用方便。
The invention relates to a device for rapidly extracting phosphate in groundwater, comprising a primary sedimentation tank, a filter and a collection tank which are connected in sequence through pipelines, and a self-priming pump is fixedly installed on the pipeline between the primary sedimentation tank and the filter; After precipitation in a primary settling tank, the self-priming pump is sent to a filter for filtration and then collected in a collection tank; it also relates to a method for rapidly extracting phosphate in groundwater, which specifically includes the following steps: S1: performing primary filtration treatment on the water body; S2: The water body after primary filtration is subjected to secondary filtration treatment; S3: adding a concentrating agent to the water body after secondary filtration for concentration treatment to obtain a phosphate precipitate. The beneficial effect of the invention is that the rapid extraction of phosphate in groundwater can be realized, so as to quickly detect the oxygen isotope of phosphate in the water body, and the extraction efficiency is greatly improved; moreover, the extraction device is divided into different disposal units, which are detachable and convenient for on-site assembly and use. , greatly improving its adaptability to the wild environment, easy to use.
Description
Technical Field
The invention relates to the technical field of isotope detection, in particular to a device and a method for quickly extracting phosphate from underground water.
Background
Eutrophication affects the quality of the water and causes a decrease in the transparency of the water, making it difficult for sunlight to penetrate through the permeable layer, thereby affecting photosynthesis of plants in the water and possibly causing a supersaturated state of dissolved oxygen. The supersaturation of dissolved oxygen and the small amount of dissolved oxygen in water are harmful to aquatic animals, causing a great amount of fish death. Wherein the concentration of phosphorus in the water body is one of the most important control factors for the eutrophication of the water body. Phosphorus in groundwater often helps us to understand the evolution and migration law of phosphorus under natural conditions.
At present, with the development of science and technology, the source and the contribution ratio of phosphorus in a water body can be quantitatively analyzed through the representation of a phosphate oxygen isotope, so that the method is noticed by broad scholars. However, the prerequisite for satisfying the phosphate oxygen isotope test is that a sufficient amount of phosphate in the water body is obtained. The content of phosphate in underground water is often very low, the acquisition is difficult, and particularly, the technical problem that the source and migration rule of phosphate and phosphorus in other forms are difficult to solve by separating the phosphate and the phosphorus in other forms into a technical problem which is represented by using a phosphate oxygen isotope technology. The traditional method for extracting phosphate has the defects of complex extraction device, long extraction time, low purity and unstable recovery rate, and the extraction effect of phosphate is seriously influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device and a method for quickly extracting phosphate from underground water, and aims to solve the technical problem.
The technical scheme for solving the technical problems is as follows:
the utility model provides a draw device of phosphate in groundwater fast, includes through the first pond, filter and the collecting pit that sink of pipeline intercommunication in proper order, just sink the pond with fixed mounting has the self priming pump on the pipeline between the filter.
The invention has the beneficial effects that: in the extraction process of phosphate in the groundwater, the groundwater is stood through the primary sedimentation tank and is precipitated, then the supernatant after standing is conveyed to a filter through a self-priming pump to be filtered again, and finally the supernatant is collected in a collecting tank to be extracted conveniently and quickly. The invention can realize the rapid extraction of phosphate in the groundwater so as to facilitate the rapid detection of phosphate oxygen isotopes in the water body, and the extraction efficiency is greatly improved; moreover, the extraction device is divided into different treatment units, can be disassembled, is convenient for field assembly and use, greatly improves the adaptability of the field environment and is convenient to use.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the filter comprises a shell, and a filtering mechanism is detachably mounted in the shell.
The beneficial effects of adopting above-mentioned further scheme are that when extracting, carry out the secondary filter through filtering mechanism to the groundwater after standing, get rid of the particulate matter in the water, the filter effect preferred.
Furthermore, the inner space of the shell is divided into a plurality of filter cavities by a plurality of partition plates which are vertically arranged at intervals along the direction from one end to the other end of the shell, and the plurality of partition plates are provided with through holes which penetrate through; the filtering mechanism comprises a plurality of filtering layers which correspond to the filtering cavities one by one and are detachably connected inside the filtering cavities; the primary sedimentation tank and the collection tank are respectively communicated with the filter cavities at the two ends of the shell through pipelines.
The adoption of the further scheme has the beneficial effects that the standing water body is sequentially filtered for multiple times through the plurality of filter layers, so that the filtering effect is improved; in addition, the filtering mechanism is divided into the plurality of filtering layers, the structure is simple, the design is reasonable, the replacement is convenient, the whole filtering mechanism does not need to be replaced when the filtering layer part breaks down, and the cost is saved.
Furthermore, the filtering layers are filtering membranes made of hydrophobic polyether sulfone materials.
The beneficial effects of adopting above-mentioned further scheme are that can effective filtration get rid of the particulate matter in the water, the filter effect preferred.
Further, the top of casing is equipped with a plurality ofly the opening of filter chamber one-to-one and intercommunication, it is a plurality of the shrouding is installed to the opening part detachable respectively.
The beneficial effects of adopting above-mentioned further scheme are simple structure, reasonable in design conveniently opens the shrouding to quick replacement filter layer, easy and simple to handle.
The device further comprises a buffer solution flushing tank, wherein the buffer solution flushing tank is respectively communicated with the collection tank and/or the filtering cavity communicated with the primary sedimentation tank through a pipeline, and flushing liquid is filled in the buffer solution flushing tank; and a flushing pump is fixedly arranged on a pipeline between the buffer solution flushing pool and the filter.
The beneficial effect who adopts above-mentioned further scheme is when wasing, and the flush fluid in with the buffer solution flushing tank through the flush pump sends to the filter and/or collects in the pond to wash the inside of filter and/or collecting pit, get rid of the impurity on the filter, guarantee the filterable quality of water.
And the buffer solution collecting tank is communicated with the filtering cavity communicated with the primary sedimentation tank through a pipeline and is used for recovering flushing liquid for flushing the filter.
Adopt the beneficial effect of above-mentioned further scheme to collect the washing liquid that washes the filter through the buffer solution collecting pit to subsequent centralized processing, convenient to use.
The device further comprises a concentration tank filled with a concentrating agent, wherein the concentration tank is communicated with the collection tank through a pipeline, and a stirrer is arranged in the concentration tank; the bottom of the concentration tank is provided with a drain outlet for collecting sediments, and a valve is fixedly arranged at the drain outlet.
The further scheme has the beneficial effects that the filtered water body is concentrated by the concentration tank to obtain concentrated solution; the precipitate discharged from the sewage outlet after the concentrated solution is stirred and precipitated is phosphate, and the extraction is convenient.
The invention also relates to a method for extracting phosphate from underground water by using the extraction device, which comprises the following steps:
s1: conveying the water body to the primary sedimentation tank for primary filtration treatment;
s2: conveying the water body subjected to primary filtration into the filter for secondary filtration treatment;
s3: and (4) conveying the water subjected to the secondary filtration to the collecting tank for collection, and adding a concentrating agent into the water for concentration treatment to obtain phosphate precipitate.
The method has the advantages that the phosphate in the groundwater is quickly extracted, the extraction is convenient, and the extraction efficiency of the phosphate is greatly improved.
Further, the concentration agent in the step S3 is NaOH, MgOH and FeCl3And one or more of the components are mixed with the water body after the secondary filtration according to the mass ratio of 1: (200-500), 1: (50-250), 1: (10-70).
The further scheme has the beneficial effects that the proportion is reasonable, and the phosphate concentration effect is optimal under the proportion.
Drawings
FIG. 1 is a general view of a first embodiment of the present invention;
FIG. 2 is an overall view of a second embodiment of the present invention;
FIG. 3 is a schematic structural view of the housing of the present invention;
fig. 4 is a schematic view of the internal structure of the housing of the present invention.
FIG. 5 is a schematic view of the internal structure of the primary sedimentation tank of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the device comprises a primary sedimentation tank, 2, a filter, 3, a collection tank, 4, a self-priming pump, 5, a shell, 6, a filter cavity, 7, a filter layer, 8, a sealing plate, 9, a buffer solution flushing tank, 10, a flushing pump, 11, a buffer solution collection tank, 12, a concentration tank, 13, a stirrer, 14, a sewage discharge outlet, 15 and a screen.
Detailed Description
The principles and features of this invention are described in connection with the drawings and the detailed description of the invention, which are set forth below as examples to illustrate the invention and not to limit the scope of the invention.
As shown in fig. 1 to 5, the present invention provides a device for rapidly extracting phosphate from groundwater, comprising a primary sedimentation tank 1, a filter 2 and a collection tank 3 which are sequentially communicated through a pipeline, wherein a self-priming pump 4 is fixedly installed on the pipeline between the primary sedimentation tank 1 and the filter 2; the water body is precipitated by the primary sedimentation tank 1, is sent to the filter 2 by the self-priming pump 4 and is collected in the collection tank 3 after being filtered. In the extraction process of phosphate in the groundwater, groundwater is through just sinking pond 1 sediment of stewing, reduces the influence of suspended solid to follow-up technology, then carries out secondary filter in sending the supernatant fluid after standing to filter 2 through self priming pump 4, collects in collecting pit 3 at last, draws convenient and fast. The invention can realize the rapid extraction of phosphate in the groundwater so as to facilitate the rapid detection of phosphate oxygen isotopes in the water body, and the extraction efficiency is greatly improved; moreover, the extraction device is divided into different treatment units, can be disassembled, is convenient for field assembly and use, greatly improves the adaptability of the field environment and is convenient to use.
The upper part in the primary sedimentation tank 1 is horizontally and fixedly provided with a screen 15 through a bolt, the bottom of the primary sedimentation tank is provided with a water outlet, and the screen 15 is fixedly arranged at the water outlet; the water outlet is communicated with a water inlet of the self-sucking pump 4 through a pipeline; during filtering, the groundwater is sent into the primary sedimentation tank 1 by a way which can be thought by a person skilled in the art, such as manual work or a pump, filtered by the screen 15 at the upper part of the primary sedimentation tank, and then enters the filter 2 through the water outlet; above-mentioned screen cloth 15 can tentatively get rid of the great impurity in the groundwater, further reduces the input of impurity, plays certain guard action to follow-up self priming pump 4 and filter 2, avoids impurity influence filter 2's filter effect.
Example 1
On the basis of the above structure, in the present embodiment, the filter 2 includes the housing 5, and the filter mechanism is detachably mounted in the housing 5. During extraction, the filter mechanism is used for carrying out secondary filtration on the standing underground water to remove particulate matters in the water body, and the filter effect is good.
Example 2
On the basis of the first embodiment, in the present embodiment, the internal space of the housing 5 is divided into a plurality of filter cavities 6 by a plurality of partition plates vertically arranged at intervals along the direction from one end to the other end of the housing, and the plurality of partition plates are provided with through holes; the filtering mechanism comprises a plurality of filtering layers 7 which correspond to the plurality of filtering cavities 6 one by one and are detachably connected inside the filtering cavities; the primary sedimentation tank 1 and the collection tank 3 are respectively communicated with the filter chambers 6 at two ends of the shell 5 through pipelines. During filtering, the standing water body is sequentially filtered for multiple times through the plurality of filter layers 7, so that the filtering effect is improved; in addition, the filtering mechanism is divided into the filtering layers 7, the structure is simple, the design is reasonable, the replacement is convenient, the whole filtering mechanism does not need to be replaced when the filtering layers 7 are partially broken down, and the cost is saved.
Besides the above embodiments, only one cavity may be provided inside the housing 5, and only one filter layer 7 is fixedly installed in the cavity, but the whole filter layer 7 needs to be replaced when the filter is replaced, which is time-consuming, labor-consuming and higher in cost.
Example 3
On the basis of the second embodiment, in this embodiment, the plurality of filter layers 7 are all filter membranes made of hydrophobic polyethersulfone, so that particulate matters in the water body can be effectively filtered and removed, and the filter effect is good.
Example 4
On the basis of embodiment two, in this embodiment, the top of casing 5 is equipped with the opening with 6 one-to-one of a plurality of filter chambers and intercommunication, and shrouding 8 is installed to a plurality of openings part detachable respectively, simple structure, and reasonable in design conveniently opens shrouding 8 to quick replacement filter layer 7, easy and simple to handle.
Each sealing plate 8 can be directly fixed to the corresponding opening by a plurality of bolts, for example, screw holes are respectively formed at two ends of the sealing plate 8 and corresponding positions on the housing 5, and the sealing plate 8 is directly fixed by the bolts;
other modes can also be adopted, for example, one end of each sealing plate 8 is rotated with one end corresponding to the opening through a hinge, and the other end can be turned over to be detachably connected with the other end corresponding to the opening, for example, the sealing plates are buckled through buckles, and the sealing plates can also be fixed through bolts.
Example 5
On the basis of the second embodiment, the present embodiment further includes a buffer solution washing tank 9, wherein the buffer solution washing tank 9 is respectively communicated with the collection tank 3 and/or the filtration chamber 6 communicated with the primary sedimentation tank 1 through a pipeline, and washing solutions are filled in the buffer solution washing tank 9; a washing pump 10 is fixedly arranged on a pipeline between the buffer washing tank 9 and the filter 2, and the washing pump 10 sends washing liquid in the buffer washing tank 9 to the filter 2 and/or the collecting tank 3 so as to wash the filter 2 and/or the collecting tank 3. During the washing, send the flush fluid in buffer solution rinsing tank 9 to filter 2 in through flush pump 10 to wash filter 2's inside, get rid of the impurity on the filter 2, guarantee the filterable quality of water.
The buffer solution in the buffer solution washing pool 9 comprises deionized water, Mg (OH) as main ingredients2And one or more of NaOH, the concentration is about 0.5-1 mol/L.
During washing, the buffer solution washing tank 9 can be communicated with the collecting tank 3 and the filter chamber 6 communicated with the primary sedimentation tank 1 through one pipeline, or can be communicated with the primary sedimentation tank through a plurality of pipelines, preferably the latter, so that the washing efficiency is higher.
In addition, the buffer solution washing tank 9 can be communicated with the filter 2 only through a pipeline, or can be respectively communicated with the buffer solution washing tank 9 and the collecting tank 3 through pipelines, and the latter is preferred, so that the collecting tank 3 and the buffer solution washing tank 9 can be washed simultaneously, and the washing is more convenient.
Example 6
On the basis of the fifth embodiment, the present embodiment further includes a buffer solution collecting tank 11, and the buffer solution collecting tank 11 is communicated with the filtering chamber 6 of the primary sedimentation tank 1 through a pipeline, and is used for recovering the washing solution for washing the filter 2. During cleaning, the washing liquid for washing the filter 2 is collected by the buffer liquid collecting tank 11 so as to be convenient for subsequent centralized treatment and use.
The both ends of above-mentioned casing 5 are equipped with water inlet and delivery port respectively, and the water inlet passes through the pipeline and communicates with the delivery port of self priming pump 4, and the delivery port passes through pipeline and 3 intercommunications in collecting pit. The water inlet and the water outlet at the two ends of the shell 5 are respectively communicated with the filter chamber 6 communicated with the primary sedimentation tank 1, and during filtering, water enters the shell 5 from the water inlet and is discharged from the water outlet after sequentially passing through the plurality of filter layers 7.
Example 7
On the basis of the structure, the embodiment also comprises a concentration tank 12 filled with a concentrating agent, wherein the concentration tank 12 is communicated with the collection tank 3 through a pipeline, and a stirrer 13 is arranged in the concentration tank 12; the bottom of the concentration tank 12 is provided with a sewage outlet 14 for collecting sediments, and a valve is fixedly arranged at the sewage outlet 14. Concentrating the filtered water body in a concentration tank 12 to obtain a concentrated solution; the precipitate discharged from the sewage outlet 14 after the concentrated solution is stirred and precipitated is phosphate, and the extraction is convenient.
The stirrer 13 adopts a rotary vane single-connection stirrer, the stirring speed is about 20-60r/min, and the specific stirring time is designed according to requirements.
In addition, a stirrer 13 is also fixed to the collecting tank 3 by bolts.
The primary sedimentation tank 1 and/or the collection tank 3 and/or the buffer solution washing tank 9 and/or the buffer solution collection tank 11 and/or the concentration tank 12 can be barrel-shaped containers, and can also be other suitable containers, and the selection is specifically carried out according to the requirements.
In addition to the above embodiment, the concentration tank 12 may not be provided, and the concentration agent may be directly fed into the collecting tank 3, and in this case, a drain outlet 14 and a valve may be provided at the bottom of the collecting tank 3.
Example 8
On the basis of the structure, the embodiment also relates to a method for extracting phosphate from underground water by using the extraction device, which specifically comprises the following steps:
s1: conveying the water body to a primary sedimentation tank 1 for primary filtration treatment;
s2: the water after primary filtration is sent into a filter 2 for secondary filtration treatment;
s3: and (3) conveying the water subjected to the secondary filtration to a collecting tank 3 for collection, and adding a concentrating agent into the water for concentration treatment to obtain phosphate precipitate.
The invention realizes the rapid extraction of phosphate in the groundwater, is convenient to extract and greatly improves the extraction efficiency of phosphate.
The concentrating agent in the step S3 is NaOH, MgOH and FeCl3And one or more of the components are mixed with the water body after the secondary filtration according to the mass ratio of 1: (200-500), 1: (50-250), 1: (10-70). The proportion is reasonable, and the concentration effect of the phosphate is optimal under the proportion.
The above-mentioned concentrating agent can adopt any one kind of above-mentioned, also can adopt several kinds of combinations, and can mix with the water body according to the above-mentioned cooperation.
In the invention, the groundwater is treated by the following steps:
pouring the collected underground water sample into a primary sedimentation tank 1 for pre-sedimentation, and standing for 30-60 min; opening the self-priming pump 4 after pre-precipitation, and starting to filter the sample, wherein the filtering time is 15 min; closing the self-sucking pump 4, starting the flushing pump 10 and backwashing the filter 2; putting the concentrating agent into a collecting tank 3 for concentration, and collecting precipitates; and repeating the above steps.
It should be noted that, the electronic components according to the present invention are all conventionally known, and the above-mentioned components are electrically connected to a controller (model TC-SCR), and a control circuit between the controller and each component is conventionally known.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A device for rapidly extracting phosphate from underground water is characterized in that: the device comprises a primary sedimentation tank (1), a filter (2) and a collecting tank (3) which are sequentially communicated through a pipeline, wherein a self-sucking pump (4) is fixedly mounted on the pipeline between the primary sedimentation tank (1) and the filter (2).
2. The apparatus for rapid extraction of phosphate from groundwater according to claim 1, wherein: the filter (2) comprises a shell (5), and a filtering mechanism is detachably mounted in the shell (5).
3. The apparatus for rapidly extracting phosphate from groundwater according to claim 2, wherein: the inner space of the shell (5) is divided into a plurality of filter cavities (6) by a plurality of partition plates which are vertically arranged at intervals along the direction from one end to the other end of the shell, and through holes are arranged on the plurality of partition plates; the filtering mechanism comprises a plurality of filtering layers (7) which correspond to the filtering cavities (6) one by one and are detachably connected inside the filtering cavities; the primary sedimentation tank (1) and the collection tank (3) are respectively communicated with the filter chambers (6) positioned at the two ends of the shell (5) through pipelines.
4. The apparatus for rapid extraction of phosphate from groundwater according to claim 3, wherein: the filtering layers (7) are filtering membranes made of hydrophobic polyether sulfone materials.
5. The apparatus for rapid extraction of phosphate from groundwater according to claim 3, wherein: the top of casing (5) is equipped with a plurality of the opening of filter chamber (6) one-to-one and intercommunication, it is a plurality of shrouding (8) are installed to the opening part detachable respectively.
6. The apparatus for rapid extraction of phosphate from groundwater according to any of claims 3 to 5, wherein: the device also comprises a buffer solution flushing tank (9), wherein the buffer solution flushing tank (9) is respectively communicated with the collection tank (3) and/or the filtering cavity (6) communicated with the primary sedimentation tank (1) through a pipeline, and flushing liquid is filled in the buffer solution flushing tank (9); and a washing pump (10) is fixedly arranged on a pipeline between the buffer solution washing pool (9) and the filter (2).
7. The apparatus for rapid extraction of phosphate from groundwater according to claim 6, wherein: the filter device is characterized by further comprising a buffer solution collecting tank (11), wherein the buffer solution collecting tank (11) is communicated with the filter cavity (6) of the primary sedimentation tank (1) through a pipeline and used for recovering and flushing liquid of the filter (2).
8. The apparatus for rapid extraction of phosphate from groundwater according to any of claims 1 to 5, wherein: the device also comprises a concentration tank (12) filled with a concentrating agent, wherein the concentration tank (12) is communicated with the collection tank (3) through a pipeline, and a stirrer (13) is arranged in the concentration tank; the bottom of the concentration tank (12) is provided with a drain outlet (14) for collecting sediments, and a valve is fixedly arranged at the drain outlet (14).
9. A method for extracting phosphate from groundwater by using the extraction device of any one of claims 1 to 8, comprising the following steps:
s1: conveying the water body to the primary sedimentation tank (1) for primary filtration treatment;
s2: conveying the water body subjected to primary filtration into the filter (2) for secondary filtration treatment;
s3: and (3) conveying the water subjected to the secondary filtration to the collecting tank (3) for collection, and adding a concentrating agent into the water for concentration treatment to obtain phosphate precipitate.
10. The method for rapid extraction of phosphate from groundwater as claimed in claim 9, wherein: the concentrating agent in the step S3 is NaOH, MgOH and FeCl3And one or more of the components are mixed with the water body after the secondary filtration according to the mass ratio of 1: (200-500), 1: (50-250), 1: (10-70).
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| CN114496108A (en) * | 2022-01-21 | 2022-05-13 | 中国地质调查局武汉地质调查中心(中南地质科技创新中心) | A method for traceability of phosphate in water based on phosphate oxygen isotope and hydrochemical characteristics |
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