CN106995247B - Device and method for preparing low-sodium healthy water - Google Patents
Device and method for preparing low-sodium healthy water Download PDFInfo
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- CN106995247B CN106995247B CN201610043992.5A CN201610043992A CN106995247B CN 106995247 B CN106995247 B CN 106995247B CN 201610043992 A CN201610043992 A CN 201610043992A CN 106995247 B CN106995247 B CN 106995247B
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4691—Capacitive deionisation
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
Abstract
The invention discloses a device for preparing low-sodium healthy water, which comprises a pretreatment device, an electric adsorption device, a nanofiltration or reverse osmosis device and a post-treatment device, and is characterized in that: the water inlet of the electric adsorption device and the water inlet of the nano-filtration or reverse osmosis device are connected with the water outlet of the pretreatment device, and the water outlet of the electric adsorption device and the water outlet of the nano-filtration or reverse osmosis device are jointly connected with the water inlet of the post-treatment device. Also discloses a preparation method of the low-sodium health water. The water after electric adsorption and the water after nanofiltration or reverse osmosis are converged, so that the converged water has the advantages of both the water and the water, the requirement of low sodium is met, the requirement of hardness in the water can be met, and the requirements of various trace elements are met, so that the water is suitable for patients with hypertension and heart diseases and normal people to drink for a long time.
Description
Technical Field
The invention relates to the field of water purification, in particular to a device and a method for preparing low-sodium healthy water.
Background
Due to industrial development and population growth, surface water and underground water are seriously polluted by discharged industrial and domestic sewage, and the drinking water contains pollutants such as organic matters, heavy metals and the like, which exceed the drinking water standard; in addition, chlorine-containing disinfectants commonly used in tap water react with organic matter in the water to produce disinfection by-products. Therefore, the tap water supplied by the conventional municipal water works is difficult to meet the living citizen requirements, the safety problem of the drinking water is more prominent, and the drinking water must be purified.
The existing common drinking water purification device mainly comprises an active carbon filter element, an ultrafiltration membrane, a nanofiltration membrane, a reverse osmosis membrane and the like. The active carbon filter element has good effect of taking out organic matters, but can not remove heavy metals and some harmful ions in water; the ultrafiltration membrane can remove bacteria, but still can not remove heavy metals and some harmful ions in water; the reverse osmosis membrane can intercept various inorganic mineral substances, colloidal substances and macromolecular solutes in water; the nanofiltration membrane is a functional semipermeable membrane which allows solvent molecules or certain low molecular weight solutes or low-valent ions to permeate, has the capacity of retaining soluble salts of 2-98%, desalts of monovalent anion salt solution lower than that of high-valent anion salt solution, is used for removing organic matters and chromaticity of surface water, removing the hardness of underground water, partially removing the soluble salts, concentrating juice, separating useful substances in medicines and the like.
The health of modern people is increasingly disturbed by hypertension, cardiovascular diseases and the like, the sodium intake of the human body is greatly related to the prevalence rate of the hypertension, the cardiovascular diseases and the like, and the higher the sodium intake, the higher the prevalence rate. Therefore, hypertension patients and heart disease patients need to reduce the intake of sodium, and although the conventional drinking water purification process meets the requirement of low sodium, the obtained drinking water is not suitable for long-term drinking.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a device for making low-sodium health water, which can meet the requirement of low sodium and is suitable for long-term drinking.
The second technical problem to be solved by the invention is to provide a preparation method of low-sodium health water.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a making devices of low-sodium healthy water, includes preprocessing device, electric adsorption equipment, nanofiltration or reverse osmosis unit and aftertreatment device, its characterized in that: the water inlet of the electric adsorption device and the water inlet of the nano-filtration or reverse osmosis device are connected with the water outlet of the pretreatment device, and the water outlet of the electric adsorption device and the water outlet of the nano-filtration or reverse osmosis device are jointly connected with the water inlet of the post-treatment device.
According to the invention, preferably, a water inlet pipe is connected to a water inlet of the post-treatment device, a first adjusting pipeline is connected to a water outlet of the electro-adsorption device, a second adjusting pipeline is connected to a water outlet of the nano-filtration or reverse osmosis device, the first adjusting pipeline and the second adjusting pipeline are jointly connected to the water inlet pipe of the post-treatment device, a water quality sensor is arranged on the water inlet pipe, and the electro-adsorption device and the nano-filtration or reverse osmosis device are adjusted according to water quality parameters detected by the water quality sensor.
Preferably, the water quality sensor includes a total dissolved solids sensor and a sodium ion concentration sensor.
According to a preferred embodiment of the present invention, the control of the electro-adsorption device and the nano-filtration or reverse osmosis device is performed by controlling the respective output flows, and for this purpose, a first control valve controlled by a signal detected by the water quality sensor is provided in the first control line, and a second control valve controlled by a signal detected by the water quality sensor is provided in the second control line.
Preferably, the pretreatment device comprises a PP cotton filter element, an activated carbon fiber filter element and an ultrafiltration device, and can filter primary suspended matters and the like, effectively absorb organic matters and reduce the turbidity of water.
In order to monitor the saturation degree of the activated carbon fiber filter element, an organic matter sensor is arranged at the water outlet of the pretreatment device.
The technical scheme adopted by the invention for solving the second technical problem is as follows: a preparation process of low-sodium health water is characterized by comprising the following steps: the method comprises the following steps:
1) Pretreatment: pretreating water;
2) Purifying: dividing the pretreated water into two paths, wherein one path of water is subjected to electro-adsorption treatment, the other path of water is subjected to nano-filtration or reverse osmosis treatment, and the water subjected to electro-adsorption treatment is merged with the water subjected to nano-filtration or reverse osmosis treatment and then is output;
3) And (3) post-treatment: and (4) carrying out post-treatment on the purified converged and output water, thereby discharging the low-sodium healthy water.
Preferably, in the step 2), the quality of the converged water is detected, the water quality detection comprises total dissolved solids detection and sodium ion concentration detection, the total dissolved solids and the sodium ion concentration of the converged water are respectively adjusted to respective preset values, and during adjustment, the Total Dissolved Solids (TDS) are adjusted towards the TDS preset value, so that the hardness of the water is proper; after TDS finishes adjusting, carry out sodium ion concentration again with similar mode and adjust sodium ion concentration to be less than sodium ion concentration default for sodium ion concentration is lower in the aquatic.
Preferably, in the step 2), the concentration of the total dissolved solids and the concentration of sodium ions after confluence are adjusted by adjusting the flow ratio of the water after the electro-adsorption treatment and the water after the nano-filtration or reverse osmosis treatment during confluence according to the detected water quality, so that the adjustment is convenient.
Preferably, in step 1), the pretreatment includes pp cotton filtration, activated carbon fiber filtration and ultrafiltration, which can perform preliminary filtration of suspended matters and the like, effectively absorb organic matters, and reduce turbidity of water.
Compared with the prior art, the invention has the advantages that: the water after the electric adsorption and the water after the nanofiltration or the reverse osmosis are converged, so that the converged water has the advantages of the water and the water, the requirement of low sodium is met, the requirement of hardness in the water and the requirements of various trace elements are met, and the water is suitable for the patients with hypertension and heart diseases and the normal people to drink for a long time; and the real-time production and the production of the healthy drinking water with proper low sodium hardness are realized through the real-time detection of the water quality and the regulating valve operated according to the water quality, and the limitation that low-sodium mineral water must be purchased is removed.
Drawings
Fig. 1 is a block diagram of a device for producing low-sodium healthy water according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Referring to fig. 1, a manufacturing device of low-sodium health water includes a pretreatment device 1, an electro-adsorption device 2, a nano-filtration or reverse osmosis device 3, and a post-treatment device 4. The pretreatment device 1 receives a water source from municipal tap water, after pretreatment by the pretreatment device 1, the water is respectively treated by the electro-adsorption device 2 and the nanofiltration or reverse osmosis device 3, and the mixed water is treated by the post-treatment device 4 and discharged as drinking purified water.
The pretreatment device 1 is used for preliminary filtration of tap water, and preferably comprises a PP cotton filter element 11, an activated carbon fiber filter element 12 and an ultrafiltration device 13, wherein the three filter devices can be arranged in sequence. For the non-heavy metal polluted water source, the pollution components of inorganic matters and organic matters with larger particles in the water are removed after passing through the pretreatment device 1. An Organic Matter Sensor (OMS) 14 can be arranged at the water outlet of the pretreatment device 1, the pollution degree of organic matters of the pretreated water can be monitored through the OMS14, in addition, a first water outlet pipeline 15 can be arranged at the water outlet of the pretreatment device 1 to discharge the pretreated water for use as domestic water, and a first electromagnetic valve 16 can be arranged on the first water outlet pipeline 15 to control the discharge of the domestic water and the discharge amount.
The water treated by the pretreatment device 1 then enters an electric adsorption device 2 and a nanofiltration or reverse osmosis device 3 respectively. The water inlet of the electric adsorption device 2 is connected with the water outlet of the pretreatment device 1, and the water outlet of the electric adsorption device 2 is connected with a first adjusting pipeline 21 and a second water outlet pipeline 22. The electro-adsorption technology is that an external voltage is applied to form an electrostatic field, ions are forced to move to an electrode with opposite charges, and dissolved salts and other charged substances in water are enriched and concentrated on the surface of the electrode, so that the water is purified/desalinated. The first regulating pipeline 21 is provided with a first regulating valve 23 so as to regulate the flow on the first regulating pipeline 21; a second solenoid valve 24 may be provided on the second outlet line 22 to control the amount of water that is discharged and the amount of water that is discharged from the second outlet line 22.
The water inlet of the nano-filtration or reverse osmosis device 3 is connected with the water outlet of the pretreatment device 1, the water outlet of the nano-filtration or reverse osmosis device 3 is connected with a second adjusting pipeline 31 and a third water outlet pipeline 32, and the second adjusting pipeline 31 is provided with a second adjusting valve 33, so that the flow on the second adjusting pipeline 31 can be adjusted conveniently. The third water outlet pipeline 32 can be provided with a third electromagnetic valve 34 (a check valve), and water discharged by the third electromagnetic valve can be used for washing vegetables and the like, so that the vegetables can be washed more cleanly by water with more mineral substances. The concentration ratio of the nanofiltration or reverse osmosis apparatus 3 is set so that the hardness of water is not less than a suitable hardness. A booster pump 35 may be further provided between the water inlet of the nano-filtration or reverse osmosis apparatus 3 and the water outlet of the pretreatment apparatus 1 to stabilize the water supply amount by maintaining the water supply pressure constant.
The first and second regulating lines 21 and 31 are connected to a water inlet pipe 41 connected to the water inlet of the post-treatment device 4, and a water quality sensor 42 is provided on the water inlet pipe 41 to feed back detected signals to the first and second regulating valves 23 and 33. In a preferred embodiment of the present invention, the water quality sensor 42 includes a Total dissolved solids (TDS, i.e., a commonly understood mineral) sensor and a sodium ion sensor.
The post-treatment device 4 can carry out sterilization treatment and the like on water, and the produced drinking purified water meets the direct drinking requirement.
The preparation method of the low-sodium health water comprises the following steps:
1) Pretreatment: municipal tap water enters, firstly suspended substances such as rust, silt and the like in water are intercepted through the 5-micrometer pp cotton filter element 11, then the suspended substances pass through the activated carbon fiber filter element 12, organic matters in the water are adsorbed, the chromaticity, the smell and various disinfection byproducts of the water are reduced, then the suspended substances enter the ultrafiltration device 13, the turbidity of the water is further reduced, the purification effect is achieved, the content of the organic matters in the water is monitored in real time through the OMS14, whether the activated carbon fiber filter element 12 is saturated or not is determined, and replacement is prompted when the adsorption is saturated.
2) Purifying: the pretreated water enters the electric adsorption device 2 and the nanofiltration or reverse osmosis device 3 respectively, and in this embodiment, the nanofiltration or reverse osmosis device 3 takes nanofiltration as an example. After one part of the pretreated water is subjected to nanofiltration, mineral substances in the water are concentrated, and the proportion of sodium ions in the concentrated water is reduced due to the southward effect of the nanofiltration; meanwhile, after the other part of the pretreated part is subjected to electric adsorption, the concentration of various mineral substances is synchronously reduced under the action of an electric field, the requirement of low sodium is met, and sodium ions and other mineral substances can be synchronously reduced to proper values by regulating the voltage of the electric adsorption device 2 according to the water quality requirement. Then the concentrated mineral substances after nanofiltration are converged with the produced water of electric adsorption, and the mixed water is blended according to the proportion of proper hardness and low sodium, namely the TDS and the sodium ion concentration are adjusted: the adjusting process is that firstly, the TDS (characterizing the hardness of water) is adjusted, and the first adjusting valve 23 and the second adjusting valve 24 are controlled by the detected result of the TDS sensor, so that the water flow rate ratio entering the water inlet pipe 41 from the first adjusting pipeline 21 and the second water outlet pipeline 22 can be adjusted, and the TDS is adjusted to the direction of the TDS preset value (such as 300 mg/L), so that the hardness of water is suitable; after TDS adjustment is finished, sodium ion concentration adjustment is carried out in a similar mode, and the sodium ion concentration is adjusted to be smaller than a preset sodium ion concentration value (20 mg/L), so that the sodium ion concentration in water is lower; the second control valve 33 can be completely closed if the outlet water from the first outlet conduit 21 meets the demand, and the first control valve 23 can be completely closed if the outlet water from the second outlet conduit 31 meets the demand. The healthy drinking water with proper hardness and low sodium content is prepared after TDS and sodium ion concentration regulation.
3) And (3) post-treatment: the purified water enters the post-treatment stage, the sterilization effect is ensured, and the direct drinking requirement is completely met.
In the above preferred embodiment, the TDS and sodium ion concentrations are adjusted by providing a water quality sensor 42 on the inlet pipe 41 of the post-treatment device 4 and automatically adjusting the inlet water ratio of the two pipes by two adjusting valves. Alternatively, the water quality sensor 42 may be disposed at the water outlet of the post-treatment device 4, or manually sample the water inlet or the water outlet of the post-treatment device 4 for detection, etc.; in addition, the electro-adsorption device 2 and the nano-filtration/reverse osmosis device 3 may be adjusted to output water with different TDS and sodium ion concentrations, or adjusting valves may be provided on their respective water inlet pipes, or other existing water quantity adjustable structures may be provided.
Claims (5)
1. The utility model provides a making devices of low-sodium healthy water, includes preprocessing device (1), electro-adsorption equipment (2), nanofiltration or reverse osmosis unit (3) and aftertreatment device (4), its characterized in that: the water inlet of the electric adsorption device (2) and the water inlet of the nanofiltration or reverse osmosis device (3) are connected with the water outlet of the pretreatment device (1), and the water outlet of the electric adsorption device (2) and the water outlet of the nanofiltration or reverse osmosis device (3) are jointly connected with the water inlet of the post-treatment device (4);
a water inlet pipe (41) is connected to a water inlet of the post-treatment device (4), a first adjusting pipeline (21) is connected to a water outlet of the electro-adsorption device (2), a second adjusting pipeline (31) is connected to a water outlet of the nano-filtration or reverse osmosis device (3), the first adjusting pipeline (21) and the second adjusting pipeline (31) are jointly connected to the water inlet pipe (41) of the post-treatment device (4), a water quality sensor (42) is arranged on the water inlet pipe (41), and the water quality sensor (42) comprises a total dissolved solid sensor and a sodium ion concentration sensor;
the first adjusting pipeline (21) is provided with a first adjusting valve (23) controlled by a signal detected by the water quality sensor (42), and the second adjusting pipeline (31) is provided with a second adjusting valve (33) controlled by the signal detected by the water quality sensor (42).
2. The apparatus for preparing low-sodium health water as set forth in claim 1, wherein: the pretreatment device (1) comprises a PP cotton filter element (11), an activated carbon fiber filter element (12) and an ultrafiltration device (13).
3. The apparatus for producing low-sodium healthy water according to claim 2, wherein: an organic matter sensor (14) is arranged at the water outlet of the pretreatment device (1).
4. A preparation method of low-sodium health water is characterized by comprising the following steps: the method comprises the following steps:
1) Pretreatment: pretreating water;
2) Purifying: dividing the pretreated water into two paths, wherein one path of water is subjected to electro-adsorption purification treatment, the other path of water is subjected to nano-filtration or reverse osmosis purification treatment, the water subjected to electro-adsorption treatment is merged with the water subjected to nano-filtration or reverse osmosis treatment and then is output, the water quality of the merged water is detected, the water quality detection comprises total dissolved solid detection and sodium ion concentration detection, the total dissolved solid and sodium ion concentration of the merged water are adjusted by adjusting the flow proportion of the water subjected to electro-adsorption treatment and the water subjected to nano-filtration or reverse osmosis treatment when merging according to the detected water quality, and the total dissolved solid and sodium ion concentration of the merged water are respectively adjusted to respective preset values;
3) And (3) post-treatment: and (4) carrying out post-treatment on the purified converged and output water, thereby discharging the low-sodium healthy water.
5. The method for producing low-sodium health water according to claim 4, wherein: in step 1), the pretreatment comprises pp cotton filtration, activated carbon fiber filtration and ultrafiltration.
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| CN201610043992.5A CN106995247B (en) | 2016-01-22 | 2016-01-22 | Device and method for preparing low-sodium healthy water |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109987774B (en) * | 2017-12-29 | 2024-01-19 | 宁波方太厨具有限公司 | Water purifier |
| CN109987757B (en) * | 2017-12-29 | 2024-01-19 | 宁波方太厨具有限公司 | Water purifier |
| CN109991384B (en) * | 2017-12-29 | 2024-01-16 | 宁波方太厨具有限公司 | Device for detecting heavy metal ion content in water |
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| CN103613217A (en) * | 2013-12-12 | 2014-03-05 | 深圳市爱玛特科技有限公司 | Water purifier capable of adjusting water quality |
| WO2015020419A1 (en) * | 2013-08-08 | 2015-02-12 | 한국전력공사 | Desalination device and desalination method using same |
| CN104556457A (en) * | 2015-01-30 | 2015-04-29 | 佛山市顺德区美的饮水机制造有限公司 | Water purification system |
| CN104787938A (en) * | 2015-03-31 | 2015-07-22 | 宁波方太厨具有限公司 | Water ionizer capable of effectively removing heavy metals |
| CN204588892U (en) * | 2015-04-01 | 2015-08-26 | 苏州点江新材料有限公司 | Weakly alkaline micromolecular water and pure water generation equipment |
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|---|---|---|---|---|
| WO2015020419A1 (en) * | 2013-08-08 | 2015-02-12 | 한국전력공사 | Desalination device and desalination method using same |
| CN103613217A (en) * | 2013-12-12 | 2014-03-05 | 深圳市爱玛特科技有限公司 | Water purifier capable of adjusting water quality |
| CN104556457A (en) * | 2015-01-30 | 2015-04-29 | 佛山市顺德区美的饮水机制造有限公司 | Water purification system |
| CN104787938A (en) * | 2015-03-31 | 2015-07-22 | 宁波方太厨具有限公司 | Water ionizer capable of effectively removing heavy metals |
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