CN222989978U - Integrated nanofiltration water purifier - Google Patents

Abstract

The utility model provides an integrated nanofiltration water purifier, which belongs to the field of water treatment technology, and includes: an ultrafiltration membrane filter, a pre-granular activated carbon filter, a polypropylene melt-blown filter, a nanofiltration high-pressure pump, a nanofiltration membrane assembly, a post-granular activated carbon filter and a water tank connected in sequence through pipelines; a first polypropylene folded filter is also arranged between the post-granular activated carbon filter and the water tank, and an ultraviolet disinfector and a constant-pressure water supply pump are arranged on the water supply pipeline between the water tank and the water supply network. After municipal tap water is treated by the integrated nanofiltration water purifier provided by the utility model, the effluent water quality can not only meet the requirements of the "Drinking Water Quality Standard" (CJ94-2005), but also improve the taste of the effluent water quality through the post-granular activated carbon, making the water sweet and delicious, improving the quality of the water, and improving user satisfaction.

Description

Integrated nanofiltration water purifier

Technical Field

The utility model belongs to the technical field of water treatment, and particularly relates to an integrated nanofiltration water purifier.

Background

At present, along with the improvement of the living standard of people, the demand of direct drinking water is greatly increased, and the direct drinking water supply technology is continuously developed. Although the existing direct drinking water treatment technologies such as nanofiltration, ultrafiltration and reverse osmosis can meet the basic requirements of the effluent water quality on the drinking water quality standard (CJ 94-2005), the requirements of users on high quality water quality can not be met, and secondly, the existing direct drinking water purifier is not compact enough in layout, and the occupied area needs to be considered when the existing direct drinking water purifier is arranged in a matched mode or in public areas such as a built community, a school and a market, so that the intensified water purifier needs to be provided.

Disclosure of utility model

The embodiment of the utility model provides an integrated nanofiltration water purifier, which aims to solve the higher requirement of a user on water quality.

The integrated nanofiltration water purifier comprises an ultrafiltration membrane filter, a front-mounted granular activated carbon filter, a polypropylene melt-blown filter, a nanofiltration high-pressure pump, a nanofiltration membrane component, a rear-mounted granular activated carbon filter and a water tank which are sequentially communicated through pipelines, wherein a first polypropylene folding filter is further arranged between the rear-mounted granular activated carbon filter and the water tank, and an ultraviolet sterilizer and a constant-pressure water supply pump are arranged on a water supply pipeline between the water tank and a water supply pipe network.

In one implementation, the ozone generator is used for conveying ozone into the water tank, and the water tank is further communicated with the tail end of the water supply pipe network through a water return pipe.

In one implementation, the pre-particulate activated carbon filter comprises two stages in series.

In one implementation, the system comprises two groups of ultrafiltration membrane filters which are arranged on a pipeline in parallel, wherein the two groups of ultrafiltration membrane filters are respectively controlled by valves and can be alternatively used.

In one implementation, the constant pressure water supply pump comprises two constant pressure water supply pumps which are arranged on a pipeline in parallel and can be alternatively used.

In one implementation, the filter further comprises a bottom plate, wherein the ultrafiltration membrane filter, the front particle activated carbon filter, the polypropylene melt-blown filter, the nanofiltration high-pressure pump, the nanofiltration membrane component, the rear particle activated carbon filter, the first polypropylene folding filter, the second polypropylene folding filter, the ultraviolet sterilizer, the constant pressure water supply pump and the ozone generator are integrated on the bottom plate in four rows.

In one implementation, the pre-granular activated carbon filter, the ozone generator and the control cabinet are sequentially and adjacently arranged in a first row, the nanofiltration membrane assembly, the constant-pressure water supply pump and the nanofiltration high-pressure pump are arranged in a second row, the ultrafiltration membrane filter and the polypropylene melt-blown filter are arranged in a third row, the first polypropylene pleated filter and the second polypropylene pleated filter are arranged in a fourth row, and the ultraviolet sterilizer is arranged close to the water tank.

In one realisable form, the nanofiltration membrane module is arranged parallel to the ultrafiltration membrane filter and is upright.

In one realisation, the constant pressure water supply pump is arranged close to the water tank.

The integrated nanofiltration water purifier provided by the utility model has the beneficial effects that municipal tap water is taken as raw water, suspended particles, colloid, partial bacteria and viruses in the water are filtered through the ultrafiltration membrane filter, organic matters and residual chlorine in the water are adsorbed by the front-end particle activated carbon filter, the impurities leaked from the front stage are further filtered through the polypropylene melt-blown filter, the filtered water enters the nanofiltration high-pressure pump, the inflow water is pressurized to the osmotic pressure required by the nanofiltration membrane component by the nanofiltration high-pressure pump, the organic matters, the bacteria and most metal salts are trapped by utilizing the selective permeability of the membrane, the produced water is processed through the rear-end particle activated carbon filter to improve the taste, then enters the stainless steel water tank and is conveyed to a user after being processed by the ultraviolet sterilizer, the municipal tap water is processed in such a way, the quality of the discharged water can not only meet the requirements of the drinking water quality standard (CJ 94-2005), but also improve the quality of the discharged water through the rear-end particle activated carbon, so that the quality of the water is sweet and delicious, and the satisfaction degree of the user is improved.

Drawings

Fig. 1 is a schematic diagram of a front view structure of an integrated nanofiltration water purifier according to an embodiment of the present utility model;

fig. 2 is a schematic side view structure of an integrated nanofiltration water purifier according to an embodiment of the present utility model;

Fig. 3 is a schematic diagram of a rear-view structure of an integrated nanofiltration water purifier according to an embodiment of the present utility model;

Fig. 4 is a schematic top view of an integrated nanofiltration water purifier according to an embodiment of the present utility model;

Reference numerals illustrate:

1. Ultrafiltration membrane filter, 2, pre-granular activated carbon filter, 3, bottom plate, 4, polypropylene melt-blown filter, 5, nanofiltration high-pressure pump, 6, nanofiltration membrane component, 7, post-granular activated carbon filter, 8, first polypropylene folding filter, 9, water tank, 10, ultraviolet sterilizer, 11, constant-pressure water supply pump, 12, second polypropylene folding filter, 13, ozone generator, 14, control cabinet.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1 to 4, an integrated nanofiltration water purifier provided by the present utility model will now be described. The integrated nanofiltration water purifier comprises an ultrafiltration membrane filter 1, a front granular activated carbon filter 2, a polypropylene melt-blown filter 4, a nanofiltration high-pressure pump 5, a nanofiltration membrane component 6, a rear granular activated carbon filter 7 and a water tank 9 which are sequentially communicated through pipelines, wherein a first polypropylene folding filter 8 is further arranged between the rear granular activated carbon filter 7 and the water tank 9, and an ultraviolet sterilizer 10 and a constant-pressure water supply pump 11 are arranged on a water supply pipeline between the water tank 9 and a water supply pipe network.

Compared with the prior art, the integrated nanofiltration water purifier provided by the utility model has the beneficial effects that municipal tap water is taken as raw water, suspended particles, colloid, partial bacteria and viruses in the water are filtered through the ultrafiltration membrane filter 1, organic matters and residual chlorine in the water are adsorbed by the front-stage particle activated carbon filter 2, impurities which are leaked in the front stage are further filtered through the polypropylene melt-blown filter 4 and then enter the nanofiltration high-pressure pump 5, the inflow water is pressurized to the osmotic pressure required by the nanofiltration membrane component 6 by the nanofiltration high-pressure pump 5, the organic matters, the bacteria and most metal salts are trapped by utilizing the selective permeability of the membrane, the produced water is treated by the ultraviolet sterilizer 10 and then enters the stainless steel water tank 9, the municipal tap water is conveyed to a user, after the municipal tap water is treated in such a way, the quality of the outflow water can not only meet the requirements of the drinking water quality standard (CJ 94-2005), but also can improve the taste of the outflow water quality through the rear-stage particle activated carbon, the quality of the outflow water is sweet and delicious, and the satisfaction of the user is improved.

The ultrafiltration membrane filter 1 mainly filters particles and suspended matters in water, prevents the particles and suspended matters in the water from blocking a membrane assembly, reduces the SDI value of municipal tap water, ensures that the water quality meets the requirement of the nanofiltration membrane element on water inflow, and plays a role in protecting the nanofiltration membrane element. The filter material of the ultrafiltration membrane filter 1 is an ultrafiltration membrane element.

The preposed particle activated carbon filter 2 adopts a two-stage series connection mode, and improves the treatment effect, and the preposed particle activated carbon filter 2 has the main functions of adsorbing part of organic matters in water, adsorbing residual chlorine in water and further purifying inorganic colloid, organic colloid and soluble organic high molecular impurities to achieve nanofiltration water inlet indexes, wherein the adsorption rate is about 60%. The filter material of the front granular activated carbon filter 2 is granular activated carbon.

The polypropylene melt-blown filter 4 has the function of intercepting particles larger than 5 mu m in the water quality of the water discharged from the ultrafiltration membrane filter 1 and the prepositive particle activated carbon filter 2, and the particles possibly break down the nanofiltration membrane component 6 after being pressurized by the nanofiltration high-pressure pump 5, so that salt leakage is caused, and meanwhile, the impeller of the nanofiltration booster pump is prevented from being scratched.

The nanofiltration high-pressure pump 5 has the function of providing enough water inlet pressure for the nanofiltration membrane component 6 and ensuring the normal operation of the nanofiltration membrane. According to the characteristics of nanofiltration, a certain driving force is needed to overcome the resistances such as osmotic pressure and the like so as to ensure that the designed water yield is achieved. The pressure is the power of the nanofiltration membrane component 6, and in order to ensure the long-term stable water yield of the nanofiltration membrane component 6, a low-pressure protection switch and a high-pressure protection switch are arranged at the inlet and the outlet of the nanofiltration high-pressure pump 5. When the water supply pressure is insufficient and the inlet pressure of the nanofiltration high-pressure pump 5 is lower than a certain set value (normally 0.05 MPa), a signal can be automatically sent out to lock and stop the nanofiltration high-pressure pump 5 in parallel to protect the nanofiltration high-pressure pump 5 from idling, and when the outlet pressure of the nanofiltration high-pressure pump 5 exceeds a certain set value due to misoperation of other reasons, the high-pressure protection switch at the outlet of the nanofiltration high-pressure pump 5 can automatically lock and cut off the power supply of the high-pressure pump to protect the system from running under high pressure.

The nanofiltration membrane component 6 filters most metal salts, organic matters, suspended matters, bacteria and the like in water by utilizing the high selective permeability of the nanofiltration membrane. The water is pressurized by the nanofiltration high-pressure pump 5 and enters the nanofiltration membrane component 6 arranged in the nanofiltration membrane shell, water molecules and a very small amount of small molecular organic matters pass through the membrane layer due to reverse osmosis pressure, and the water which cannot pass through the nanofiltration membrane component 6 is discharged out of the system through the concentrated water pipe after the taste of the water is improved by the collection pipeline and the rear granular activated carbon filter 7 enters the stainless steel water tank 9.

The function of the post-granular activated carbon filter 7 is to improve the taste of the water quality of the effluent through the post-granular activated carbon, so that the water is sweet and delicious.

The first polypropylene folding filter 8 is a precision filter, is arranged on a pipeline entering the water tank 9, adopts a 0.22 micron microporous folding filter element to filter, intercepts substances larger than 0.22 micron in the post-activated carbon water, and keeps the purity of the water entering the water tank 9. The precision filter adopts a side-in and side-out mode, so that the precision filter is convenient to empty.

The water tank 9 is made of stainless steel, and is convenient for customers to drink by collecting product water.

The ultraviolet sterilizer 10 is internally provided with an ultraviolet lamp tube, has the most harmful effect of destroying the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in bacterial viruses within the wavelength range of 240-280 nm, causes the death of growing cells and/or the death of regenerative cells, achieves the sterilization and disinfection effects, and mainly performs further sterilization and disinfection treatment on the effluent of the water tank 9.

The constant pressure water supply pump 11 can be replaced according to the water demand of the customer. The constant pressure water supply pump 11 operates at a set pressure to deliver the direct drinking water satisfying the customer's demand to the water point. The constant-pressure water supply pump 11 of the device adopts variable frequency control. The constant-pressure water supply pump 11 is of an integrated structure and has the characteristics of reliability, maturity, stable operation, low operation cost, extremely small management and maintenance amount, high automation degree, high integration, small occupied area, convenient operation and maintenance and the like.

Referring to fig. 1 to 4, the nanofiltration water purifier provided by the utility model further comprises an ozone generator 13, wherein the ozone generator 13 is used for delivering ozone into the water tank 9, and the water tank 9 is also communicated with the tail end of the water supply pipe network through a water return pipe. Ozone generator 13 sucks ozone into water tank 9 through the small circulation established by constant pressure water supply pump 11, pressure reducing valve and water injector, and achieves the aim of sterilizing water tank 9 and water supply network.

The constant-pressure water supply system adopts a double disinfection mode of the ultraviolet sterilizer 10 and the ozone generator 13, not only disinfects the water tank 9, but also effectively disinfects the water supply network, and adopts measures to achieve ozone disinfection and simultaneously well solve the influence of ozone on the taste of direct drinking water.

After the water in the water tank 9 is sterilized by the ultraviolet sterilizer, the pressure is increased by the constant pressure water supply pump 11, and the water is conveyed to a customer using point by pressure stabilization through a pressure tank (not shown in the figure). When the system needs ozone sterilization, the ozone generator 13 is started to deliver ozone into the water tank 9, when the ozone concentration of the water tank 9 reaches the sterilization concentration, the ultraviolet sterilizer is closed to sterilize the pipeline, and after the sterilization is finished, the residual ozone in the system is eliminated and decomposed through the ultraviolet sterilizer.

Wherein, the water return end is provided with comprehensive water quality monitoring, and water quality indexes such as permanganate index (COD _Mn, calculated by O ₂), turbidity, total Dissolved Solids (TDS), temperature and the like in the direct drinking water supply system are monitored in real time.

The purifying water supply system is fully automatic, only needs to be checked regularly, does not need daily manual operation, and can realize automatic start/stop according to the liquid level by the signal of the liquid level sensor on the water tank 9. The quality of the effluent can be displayed by an on-line instrument. The system is characterized in that the system is stably operated under the set operating pressure, faults of all parts of the system are displayed and alarmed, sanitary stainless steel pipe fittings and valves are adopted for direct drinking water of the system, the pipelines are not rusted, the water can be effectively prevented from being polluted again, and the water quality is ensured.

In some embodiments, as shown in fig. 1-4, a second polypropylene pleated filter 12 is provided on the return line. A second polypropylene folding filter 12 is arranged on the water return pipeline and is used as a fine filter, and a 0.22-micron microporous folding filter element is adopted for filtering, so that substances larger than 0.22 micron in circulating water in the pipeline are intercepted, and the purity of the water return is maintained.

As shown in fig. 1 to 4, the nanofiltration water purifier provided by the utility model further comprises a two-stage series-connected front-mounted granular activated carbon filter 2.

As shown in fig. 1 to 4, the nanofiltration water purifier provided by the utility model comprises two groups of ultrafiltration membrane filters 1 which are arranged on a pipeline in parallel, wherein the two groups of ultrafiltration membrane filters 1 are respectively controlled by valves and can be alternatively used. The two groups of ultrafiltration membrane filters 1, each group of two ultrafiltration membrane filters are operated in a rotating way, one ultrafiltration membrane filter is used for one preparation, the rotating time is determined according to the water making working condition, the ultrafiltration membrane back flushing is carried out when the water tank 9 is full of water to stop making water each time, and the next group of membranes are rotated to be in a working duty state. During backwashing, the backwash water source of each group of ultrafiltration membrane filters 1 is ultrafiltration water production of the other group. When the water production electric valve MV105 is closed, the nanofiltration high-pressure pump 5 and the water inlet electric valve MV201 of the nanofiltration high-pressure pump 5 are closed at the same time, and the nanofiltration water production is stopped.

As shown in fig. 1 to 4, the nanofiltration water purifier provided by the present utility model comprises two constant pressure water supply pumps 11 which are arranged in parallel on a pipeline and can be used alternatively. The constant pressure water supply pump 11 is provided with 2 pumps which are used for one standby, 2 pumps are used for regular rotation operation at ordinary times, a pressure sensor is arranged at the outlet of the water supply pump set, the rotation speed of the water pump is regulated according to the outlet pressure, the constant working pressure of the system is maintained, 2 pumps are simultaneously operated to achieve the purpose of constant pressure water supply when the water pump reaches the highest rotation speed in the water use peak period and still cannot meet the normal working pressure, when the water pump maintains the outlet pressure at the lowest rotation speed at the set working pressure, the water pump stops operating, when the outlet pressure is lower than the normal working pressure, the water pump starts water supply again, when the water level of the water tank 9 is lower than the set pump stop water level, the constant pressure water supply pump 11 stops operating, and the water pump can be started only when the water level of the water tank 9 is higher than the set pump starting water level.

As shown in fig. 1 to 4, the nanofiltration water purifier provided by the utility model further comprises a bottom plate 3, an ultrafiltration membrane filter 1, a front particle activated carbon filter 2, a polypropylene melt-blown filter 4, a nanofiltration high-pressure pump 5, a nanofiltration membrane component 6, a rear particle activated carbon filter 7, a second polypropylene folding filter 12, a first polypropylene folding filter 8, an ultraviolet sterilizer 10, a constant pressure water supply pump 11 and an ozone generator 13 are integrated on the bottom plate 3 in four rows.

The ultrafiltration membrane filter 1, the pre-treatment equipment such as the pre-particulate activated carbon filter 2, the polypropylene melt-blown filter 4, the nanofiltration membrane component 6, the post-treatment equipment such as the post-particulate activated carbon filter 7, the second polypropylene folding filter 12, the first polypropylene folding filter 8, the ultraviolet sterilizer 10 and the constant-pressure water supply system are all arranged in a centralized way and fixed on the bottom plate 3 of an integral structure, so that the arrangement structure is compact, the space is saved, and the centralized maintenance and management are also convenient.

In some embodiments, as shown in fig. 1 to 4, the pre-granular activated carbon filter 2, the ozone generator 13 and the control cabinet 14 are sequentially and adjacently arranged in a first row, the nanofiltration membrane assembly 6, the constant pressure water supply pump 11 and the nanofiltration high pressure pump 5 are arranged in a second row, the ultrafiltration membrane filter 1 and the polypropylene melt-blown filter 4 are arranged in a third row, the first polypropylene pleated filter 8 and the second polypropylene pleated filter 12 are arranged in a fourth row, and the ultraviolet sterilizer 10 is arranged close to the water tank 9.

In some embodiments, as shown in fig. 1-4, nanofiltration membrane modules 6 are arranged parallel and upright with the ultrafiltration membrane filter 1, or may be arranged parallel and horizontal.

In some embodiments, as shown in fig. 1 to 4, the constant pressure water supply pump 11 is disposed near the water tank 9, enabling shortening of the length of the piping used.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (9)

1. An integrated nanofiltration water purifier, characterized in that it comprises: an ultrafiltration membrane filter (1), a pre-granular activated carbon filter (2), a polypropylene melt-blown filter (4), a nanofiltration high-pressure pump (5), a nanofiltration membrane assembly (6), a post-granular activated carbon filter (7) and a water tank (9) which are sequentially connected through pipelines; a first polypropylene folded filter (8) is also arranged between the post-granular activated carbon filter (7) and the water tank (9), and an ultraviolet disinfector (10) and a constant pressure water supply pump (11) are arranged on the water supply pipeline between the water tank (9) and the water supply network. 2. The integrated nanofiltration water purifier according to claim 1 is characterized in that it also includes an ozone generator (13), wherein the ozone generator (13) is used to transport ozone into the water tank (9), and the water tank (9) is also connected to the end of the water supply network through a return pipe. 3. The integrated nanofiltration water purifier according to claim 2 is characterized in that it comprises two stages of the pre-placed granular activated carbon filter (2) connected in series. 4. The integrated nanofiltration water purifier according to claim 1 is characterized in that it comprises two groups of ultrafiltration membrane filters (1) arranged in parallel on the pipeline, and the two groups of ultrafiltration membrane filters (1) are respectively controlled by valves and can be used alternately. 5. The integrated nanofiltration water purifier according to claim 1 is characterized in that it comprises two constant pressure water supply pumps (11) arranged in parallel on the pipeline and can be used alternately. 6. The integrated nanofiltration water purifier as described in claim 3 is characterized in that it also includes a base plate (3), and the ultrafiltration membrane filter (1), the pre-granular activated carbon filter (2), the polypropylene melt-blown filter (4), the nanofiltration high-pressure pump (5), the nanofiltration membrane assembly (6), the post-granular activated carbon filter (7), the second polypropylene folded filter (12), the first polypropylene folded filter (8), the ultraviolet disinfector (10), the constant pressure water supply pump (11) and the ozone generator (13) are integrated on the base plate (3) in four rows. 7. The integrated nanofiltration water purifier according to claim 6 is characterized in that the pre-granular activated carbon filter (2), the ozone generator (13) and the control cabinet (14) are arranged adjacent to each other in the first row; the nanofiltration membrane assembly (6), the constant pressure water supply pump (11) and the nanofiltration high-pressure pump (5) are arranged in the second row; the ultrafiltration membrane filter (1) and the polypropylene melt-blown filter (4) are arranged in the third row; the first polypropylene folded filter (8) and the second polypropylene folded filter (12) are arranged in the fourth row, and the ultraviolet sterilizer (10) is arranged close to the water tank (9). 8. The integrated nanofiltration water purifier according to claim 7, characterized in that the nanofiltration membrane assembly (6) and the ultrafiltration membrane filter (1) are parallel and both are arranged upright. 9. The integrated nanofiltration water purifier according to claim 7, characterized in that the constant pressure water supply pump (11) is arranged close to the water tank (9).