CN114477475A - Multistage medicine-adding, crystallizing, granulating and softening device and method for high-hardness water - Google Patents
Multistage medicine-adding, crystallizing, granulating and softening device and method for high-hardness water Download PDFInfo
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- CN114477475A CN114477475A CN202210247422.3A CN202210247422A CN114477475A CN 114477475 A CN114477475 A CN 114477475A CN 202210247422 A CN202210247422 A CN 202210247422A CN 114477475 A CN114477475 A CN 114477475A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000002425 crystallisation Methods 0.000 claims abstract description 46
- 230000008025 crystallization Effects 0.000 claims abstract description 45
- 238000005469 granulation Methods 0.000 claims abstract description 44
- 230000003179 granulation Effects 0.000 claims abstract description 44
- 239000013078 crystal Substances 0.000 claims abstract description 29
- 238000005070 sampling Methods 0.000 claims abstract description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 239000003814 drug Substances 0.000 claims description 29
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 16
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 8
- 238000011282 treatment Methods 0.000 claims description 7
- 239000008233 hard water Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000035622 drinking Effects 0.000 abstract 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 239000010865 sewage Substances 0.000 description 6
- 239000008235 industrial water Substances 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention relates to a multistage medicine-adding, crystallizing, granulating and softening device and a method for high-hardness water, wherein the device comprises a crystallizing, granulating and softening bed device main body, and the crystallizing, granulating and softening bed device main body is provided with a crystal seed discharging port, a water inlet, a multistage medicine-adding port, a crystal seed adding port and a water outlet from bottom to top; the main body of the crystallization granulation softening bed device is also provided with 3 viewing windows and 3 sampling ports from bottom to top. The multistage medicine-adding, crystallizing, granulating and softening device has the advantages of good software drinking effect, small floor area, low operation and maintenance cost, easiness in operation and the like.
Description
Technical Field
The invention relates to a water treatment device and a water treatment method, in particular to a multistage medicine-adding, crystallizing, granulating and softening device and a multistage medicine-adding, crystallizing, granulating and softening method for high-hardness water.
Background
The hardness index in the water body is a main control index in the industrial water index, the hardness factor in the water body is a main hazard factor in the industrial water, is a main obstacle factor for equipment safety, energy conservation and emission reduction of an industrial water system, and is a treatment key and a difficulty point for realizing zero discharge of sewage in industrial production. In the industrial water using process, a large amount of high-hardness sewage which is difficult to recycle is generated in the water using processes such as evaporation concentration, washing, sewage discharge and the like, and the hardness of the sewage needs to be effectively reduced and removed, so that the sewage can be recycled, and the pollution to the environment caused by the discharged sewage is reduced or avoided. For the treatment of hard water, many effective softening methods have been proposed, including precipitation softening, adsorption and ion exchange, coagulation/coagulation-enhanced hardness removal, membrane hardness removal, crystallization granulation softening, and the like. The crystallization, granulation and softening technology which is efficient, low in cost and small in occupied area is a hot point for research on hard water and soft water.
When the crystallization granulation softening device is used for softening hard water, water enters the softening device through a water pipe, sodium carbonate and sodium hydroxide are added into the softening device, calcium carbonate crystals are generated in the water, and the generated calcium carbonate crystals are directly attached to the surface of the seed crystal to grow, so that calcium carbonate particles with the diameter of 1-3 mm are formed, the hardness of the water is reduced, and the softening of the water is realized. However, when the conventional crystallization granulation softening device is used for treating high-hardness wastewater, the problems of overhigh turbidity of produced water, substandard water quality treatment and the like exist. Therefore, the design of a crystallization, granulation and softening device for softening and turbidity reduction of high-hardness water has very important practical significance.
Disclosure of Invention
The invention aims to solve the problems of overhigh turbidity of produced water, substandard water quality treatment and the like when a common crystallization granulation softening device is used for treating high-hardness wastewater, and provides a multistage crystallization granulation softening device and a multistage crystallization granulation softening method for softening and turbidity reduction of high-hardness water.
The device comprises a crystallization granulation softening bed device main body, wherein a crystal discharging port, a water inlet, a multi-stage medicine feeding port, a crystal feeding port and a water outlet are arranged on the crystallization granulation softening bed device main body from bottom to top, the multi-stage medicine feeding port is more than three stages, and the crystallization granulation softening bed device main body is also provided with 3 viewing windows which are arranged up and down and 3 sampling ports which are arranged up and down.
Further, the water inlet is 100-300 mm away from the bottom of the main body of the crystallization granulation softening bed device, the feeding seed crystal is 200-500 mm away from the top of the main body of the crystallization granulation softening bed device, and the water outlet is arranged at the top of the main body of the crystallization granulation softening bed device.
Furthermore, the distance between the multi-stage dosing openings and the water inlet is 100-300 mm, the number of the dosing openings at each stage is more than or equal to 1, and the dosing openings at each stage are spaced at intervals of 300-500 mm.
The distance between the lowest one-level of multistage medicine mouth and the water inlet is 100 ~ 300mm, and the quantity of each grade in the multistage medicine mouth that adds medicine mouth can set up the quantity of adding medicine mouth according to actual conditions more than one, and the interval between the medicine mouth that adds at each grade is 300 ~ 500 mm.
Further, the multistage medicine feeding port is 3 grades, the first-stage medicine feeding port is 100mm away from the water inlet, the second-stage medicine feeding port is 300mm away from the first-stage medicine feeding port, and the third-stage medicine feeding port is 300mm away from the second-stage medicine feeding port.
Further, the 3 viewing windows are respectively positioned at the lower part, the middle upper part and the upper part of the crystallization granulation softening bed device main body, and the 3 sampling ports are respectively positioned at the lower part, the middle part and the upper part of the crystallization softening bed main body.
On the other hand, the invention provides a multistage medicine-adding crystallization granulation softening method of high-hardness water, which comprises the following steps:
s1, adding seed crystals into the multistage medicine-adding, crystallizing, granulating and softening device;
s2, adjusting the operation parameters of the multistage medicine-adding crystallization granulation softening device, wherein the operation parameters comprise one or more of flow rate, medicine adding amount and medicine adding type;
and S3, softening the high-hardness water by using a multistage medicine-adding, crystallizing, granulating and softening device.
Furthermore, the grain size of the seed crystal is 0.01-0.05 mm, and the adding height of the seed crystal bed layer is more than or equal to 600 mm.
Furthermore, in the operation parameters, the flow speed is 60-110 m/h, and the dosing amount is determined according to the initial hardness of water and the dosing stage number of the crystallization, granulation and softening device; the medicine is sodium carbonate or sodium hydroxide.
Furthermore, the preparation concentration of the sodium carbonate and the sodium hydroxide is 1-5%.
Further, the initial hardness of the high-hardness water is 600-1500 mg/L.
Compared with the prior art, the invention has the following advantages and effects:
1. the high-hardness water with the hardness of 600-1500 mg/L can be efficiently treated;
2. the medicament and water are mixed more uniformly, the reaction is faster, and the water quality of produced water is better;
3. the occupied area is small, the operation and maintenance cost is low, and the operation is easy;
4. reasonable in design, reduce cost.
Drawings
FIG. 1 is a schematic view of one direction of the present multistage dosing crystallization granulation softening device for high hardness water;
FIG. 2 is another schematic view of the multi-stage dosing crystallization granulation softening device for high-hardness water;
description of reference numerals:
1-crystal seed discharging port 2-water inlet 3-multi-stage medicine adding port 4-crystal seed adding port 5-water outlet
6-sampling opening one 7-sampling opening two 8-sampling opening three 9-viewing window one 10-viewing window two
11-view window three 12-crystallization granulation softening bed device main body
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
As shown in figures 1 and 2, the multistage medicine-adding, crystallizing, granulating and softening device for high-hardness water comprises a crystallizing, granulating and softening bed device main body 12, wherein the crystallizing, granulating and softening bed device main body 12 is provided with a crystal discharging port 1, a water inlet 2, a multistage medicine-adding port 3, a crystal adding port 4 and a water outlet 5 from bottom to top, and the crystallizing, granulating and softening bed device main body 12 is also provided with three or more than 3 medicine-adding ports arranged up and down and 3 sampling ports arranged up and down.
The discharging crystal seed port 1 is arranged at the bottom of the crystallization granulation softening bed device main body 12, the height from the water inlet 2 to the bottom of the crystallization granulation softening bed device main body is 100-300 mm, the adding crystal seed port 4 is preferably 200-500 mm from the top of the crystallization granulation softening bed device main body, and the water outlet 5 is preferably designed at the top of the crystallization granulation softening bed device main body.
The multistage dosing ports 3 can be designed to be 3 stages or more, the distance between the lowest stage dosing port and the water inlet 2 is 100-300 mm, 1 or more dosing ports can be arranged on each stage of the multistage dosing ports 3, when the diameter of the main body of the crystallization granulation softening bed device is small, one dosing port is arranged on the first stage dosing port, the materials can be quickly and uniformly mixed, and when the diameter is large, a plurality of dosing ports are required to be formed for uniform mixing; the interval between each level of dosing mouth and the dosing mouth of adjacent level is 300 ~ 500mm, and when multistage dosing mouth 3 design becomes 3 levels, preferred first level dosing mouth is apart from the water inlet 100mm, and the second level dosing mouth is apart from first level dosing mouth 300mm, and the third level dosing mouth is apart from the second level dosing mouth 300 mm.
The first sight window, the second sight window and the third sight window 3 are respectively arranged at the lower part, the middle upper part and the upper part of the crystallization granulation softening bed device main body 12, and the first sampling port, the second sampling port and the third sampling port 3 are respectively arranged at the lower part, the middle part and the upper part of the crystallization granulation softening bed device main body 12.
The multistage medicine-adding, crystallizing, granulating and softening method for high-hardness water comprises the following steps:
s1, adding seed crystals into the multistage medicine-adding, crystallizing, granulating and softening device;
s2, adjusting the operation parameters of the multistage medicine-adding crystallization granulation softening device, wherein the operation parameters comprise one or more of flow rate, medicine adding amount and medicine adding type;
and S3, softening the high-hardness water by using a multistage medicine-adding, crystallizing, granulating and softening device.
According to the multistage dosing crystallization granulation softening method for high-hardness water, the grain size of the seed crystal is preferably 0.01-0.05 mm, and the adding height of the seed crystal bed layer is preferably more than or equal to 600 mm; in the operation parameters, the flow rate is 60-110 m/h, and the dosing amount is determined according to the initial hardness of water and the dosing stage number of the crystallization granulation softening device; adding sodium carbonate and sodium hydroxide as medicine; the preparation concentration of sodium carbonate and sodium hydroxide is 1-5%; the initial hardness of the high-hardness water is 600-1500 mg/L.
In one embodiment, the pH of the high-hardness water is 7.54, the total hardness is 1485mg/L, the bicarbonate is 1200mg/L, the turbidity is 22.09NTU, meanwhile, the grain size of the added seed crystal in the multistage medicine-adding crystallization granulation softening device for the high-hardness water is 0.03mm, the adding height of the seed crystal bed layer is 850mm, the flow speed is adjusted to be 85m/h, the medicine adding amount of sodium hydroxide at each stage of medicine adding opening is 250ppm, and the total sodium hydroxide is 750 ppm. After the high-hardness water is softened by a multistage medicine-adding, crystallizing, granulating and softening device, the pH of produced water is 10.3, the total hardness is 102mg/L, the bicarbonate is 432mg/L, and the turbidity is 5.7 NTU.
In another embodiment, the pH of the high-hardness water is 7.69, the total hardness is 888.52mg/L, the bicarbonate is 61.85mg/L, the turbidity is 25NTU, the grain size of the added seed crystal in the multistage medicine-adding, crystallization, granulation and softening device for the high-hardness water is 0.03mm, the adding height of the seed crystal bed layer is 600mm, the flow speed is adjusted to 73m/h, the medicine adding amount of sodium carbonate at each medicine adding port is 221ppm, and the sodium hydroxide is 663 ppm. After the high-hardness water is treated by a multistage medicine-adding, crystallizing, granulating and softening device, the pH of produced water is 9.26, the total hardness is 98.09mg/L, the carbonate is 6.08mg/L, and the turbidity is 3.1 NTU.
In addition, it should be noted that the specific embodiments described in the present specification may differ in the shape of the components, the names of the components, and the like. All equivalent or simple changes of the structure, the characteristics and the principle of the invention which are described in the patent conception of the invention are included in the protection scope of the patent of the invention. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The multistage medicine that adds of high hard water crystallization granulation softening installation, its characterized in that, including crystallization granulation softening bed device main part, be equipped with from bottom to top in the crystallization granulation softening bed device main part and discharge crystal seed mouth, water inlet, multistage dosing mouth, throw crystal seed mouth, delivery port, multistage dosing mouth is more than tertiary, still be equipped with 3 sight windows and 3 sample connection of arranging from top to bottom of arranging in the crystallization granulation softening bed device main part.
2. The multistage medicine-adding, crystallizing, granulating and softening device for high-hardness water according to claim 1, wherein the water inlet is 100-300 mm away from the bottom of the main body of the crystallizing, granulating and softening bed, the seed-adding opening is 200-500 mm away from the top of the main body of the crystallizing, granulating and softening bed, and the water outlet is arranged at the top of the main body of the crystallizing, granulating and softening bed.
3. The device for multistage dosing, crystallizing, granulating and softening of high hardness water according to claim 1, wherein the multistage dosing ports are 100-300 mm away from the water inlet, the number of the dosing ports of each stage is not less than 1, and the dosing ports of each stage are spaced at intervals of 300-500 mm.
4. The device for multistage dosing, crystallizing, granulating and softening of high hardness water according to claim 3, wherein the multistage dosing ports are of 3 stages, the first-stage dosing port is 100mm away from the water inlet, the second-stage dosing port is 300mm away from the first-stage dosing port, and the third-stage dosing port is 300mm away from the second-stage dosing port.
5. The multi-stage chemical-adding crystallization and granulation softening device for high-hardness water according to claim 1, wherein the 3 windows are respectively located at the lower part, the middle upper part and the upper part of the crystallization and granulation softening bed device body, and the 3 sampling ports are respectively located at the lower part, the middle part and the upper part of the crystallization and softening bed body.
6. The multistage medicine-adding crystallization granulation softening method for high-hardness water based on any one of claims 1 to 5, characterized by comprising the following steps:
s1, adding seed crystals into the multistage medicine-adding, crystallizing, granulating and softening device;
s2, adjusting the operation parameters of the multistage medicine-adding crystallization granulation softening device, wherein the operation parameters comprise one or more of flow rate, medicine adding amount and medicine adding type;
and S3, softening the high-hardness water by using a multistage medicine-adding, crystallizing, granulating and softening device.
7. The multistage dosing crystallization granulation softening method for high hardness water according to claim 6, wherein the grain size of the seed crystal is 0.01-0.05 mm, and the addition height of the seed crystal bed layer is not less than 600 mm.
8. The method for multistage medicine-adding, crystallizing, granulating and softening of high-hardness water according to claim 6, wherein in the operation parameters, the flow rate is 60-110 m/h, and the medicine-adding amount is determined according to the initial hardness of water and the medicine-adding stage number of the crystallizing, granulating and softening device; the medicine is sodium carbonate or sodium hydroxide.
9. The method for softening high hardness water through multi-stage chemical-adding, crystallization, granulation and treatment according to claim 6 or 8, wherein the configured concentration of sodium carbonate and sodium hydroxide is 1-5%.
10. The method for multistage chemical-adding, crystallizing, granulating and softening of high-hardness water according to claim 6, wherein the initial hardness of the high-hardness water is 600-1500 mg/L.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210247422.3A CN114477475A (en) | 2022-03-14 | 2022-03-14 | Multistage medicine-adding, crystallizing, granulating and softening device and method for high-hardness water |
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| CN202210247422.3A CN114477475A (en) | 2022-03-14 | 2022-03-14 | Multistage medicine-adding, crystallizing, granulating and softening device and method for high-hardness water |
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-
2022
- 2022-03-14 CN CN202210247422.3A patent/CN114477475A/en active Pending
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Application publication date: 20220513 |