CN217297561U

CN217297561U - Spring water direct drinking water purification system

Info

Publication number: CN217297561U
Application number: CN202220358378.9U
Authority: CN
Inventors: 徐双成; 高洪波; 于跃; 王鹏; 王雅斌; 胡昕如; 孟子浩; 崔晓洁; 沈赫明; 王智刚; 张廷美; 徐承玮
Original assignee: Jinan Purun Water Co ltd
Current assignee: Jinan Purun Water Co ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-08-26
Anticipated expiration: 2032-02-22

Abstract

The application discloses water purification system is directly drunk to spring water relates to water purification process field. The system comprises a raw water unit, a filter unit, a primary membrane treatment unit, a secondary membrane treatment unit, a water purification unit, a water supply unit and a backwater filter which are connected in sequence; the water purification equipment group, the water supply equipment group and the backwater filter form a backwater circulation waterway, and the water outlet of the backwater filter is connected to the water purification tank; an intermediate water tank for buffering excessive water is arranged between the primary membrane treatment and the secondary membrane treatment; the primary membrane treatment uses an ultrafiltration membrane with the membrane aperture of 5-20 nm; the nanofiltration membrane selected for the secondary membrane treatment is matched with the water quality of the raw water, so that the water quality treated by the secondary membrane meets the national standard and better reflects the characteristics of spring water, mineral elements beneficial to human bodies in underground spring water are reserved, the process flow is customized according to the water quality condition of the raw water, the water supply flow is saved, and the investment cost is reduced.

Description

Spring water direct drinking water purification system

Technical Field

The application relates to the field of water purification processes, in particular to a spring direct drinking water purification system.

Background

The water treatment process mostly adopted in the water purifying machine room of the spring direct drinking water process spring direct drinking engineering at present is as follows: raw water tank → multi-medium filtration → softening filter → precision filter → ultrafiltration → nanofiltration → ozone + ultraviolet disinfection → water purification tank → circulating water supply pipe network → user. The quality of the effluent purified by the process meets the drinking water purification standard, but the process removes a large amount of pollutants and a large amount of trace elements and mineral substances which are beneficial to human bodies and are contained in the spring water to a certain extent, so that the problems of overhigh desalination rate, low water hardness and the like of the water used by users are caused, and the characteristics of the spring water cannot be maintained.

Therefore, how to remove the pollutants in the spring water and retain the beneficial elements of the spring water to realize the supply of the special spring water is a direction which needs to be paid more attention and solved.

Disclosure of Invention

In order to solve the technical problem, the application provides a spring water directly drinks water purification system, can embody spring water characteristic better, keeps the beneficial mineral element to the human body in the underground spring water, and customizes process flow according to the use scene, has practiced thrift water supply flow investment cost.

The technical problem of the application is realized by the following technical scheme: a spring water direct drinking water purification system comprises a raw water unit, wherein a filter group, a primary membrane treatment, a secondary membrane treatment, a water purification unit, a water supply unit and a backwater filter are sequentially connected behind the raw water unit; the water purification equipment set comprises a water purification tank, the water purification equipment set, a water supply equipment set and a backwater filter form a backwater circulating waterway, and a water outlet of the backwater filter is connected to the water purification tank; an intermediate water tank used for buffering excess is arranged between the first-stage membrane treatment and the second-stage membrane treatment.

Further, the first-stage membrane treatment uses an ultrafiltration membrane with the membrane aperture of 5-20 nm.

Furthermore, a nanofiltration membrane selected in the secondary membrane treatment is matched with the water quality of raw water, so that the hardness index of the water subjected to the secondary membrane treatment is 80-150 mg/L.

Further, the raw water equipment group comprises a raw water well, a raw water pipe, a raw water tank, a raw water pressure pump and a raw water quality detector, wherein the raw water well is connected to the raw water tank through the raw water pipe, and the raw water pressure pump is arranged between the raw water tank and the filter group; a raw water quality detector is arranged between the raw water pressure pump and the filter group.

Further, the filter group comprises a multi-media filter and a precision filter, and the multi-media filter and the precision filter are sequentially connected in series.

Furthermore, the precise filter uses a filter membrane with the membrane aperture of 1-5 mu m.

Further, the water purification equipment group comprises a water purification tank, an ultraviolet sterilizer, a water purification detector and an ozone generator, wherein the ultraviolet sterilizer and the water purification quality detector are sequentially arranged between the water purification tank and the water supply equipment group; the water purifying tank is externally connected with an ozone generator.

Further, the water supply equipment group comprises low-region water supply equipment and high-region water supply equipment which are arranged in parallel; the device comprises a low-region water supply device, a high-region water supply device, a low-region water return device, a high-region water return device and a return water filter, wherein the low-region water supply device is connected with the low-region water supply device and the low-region return water, the high-region water supply device is connected with the high-region return water, and the low-region return water and the high-region return water are connected to the return water filter after converging into a return water main path.

In summary, the present application has the following beneficial effects:

1. the utility model provides a water purification system is applicable to raw water quality of water more complicated, and turbidity is higher, the condition that the microorganism index exceeds standard, has removed the softening filter in the system flow, to the relatively not good raw water of quality of water, remains ultrafiltration filter, formulates the process route according to raw water quality of water, has saved construction cost and running cost, chooses the nanofiltration membrane of suitable model for use according to the raw water quality of water condition, can also remain the aquatic mineral substance when satisfying the water requirement is directly drunk to spring water.

2. The utility model provides a water purification system accomplishes the work of digging a well in the spring water is directly drunk engineering construction project place region, carries out water quality testing, satisfies under the condition of supplying water the prerequisite at quality of water, carries out the design planning of water treatment process, rationally establishes water processing system to each water source quality of water condition, rationally establishes water treatment capacity according to the water consumption simultaneously.

Drawings

FIG. 1 is a schematic diagram of a water purification system according to the present application;

FIG. 2 is an enlarged partial schematic view of FIG. 1;

FIG. 3 is a schematic view of the water purification system of the present application showing the flow of effluent;

FIG. 4 is a block flow diagram of a water purification system of the present application;

fig. 5 is a schematic structural view of a raw water plant.

Description of reference numerals:

1. a raw water unit; 101. a raw water well; 102. a raw water pipe; 103. a raw water tank; 104. a raw water pressure pump; 105. a raw water quality detector;

2. a filter group; 201. a multi-media filter; 202. a precision filter;

3. primary membrane treatment; 4. secondary membrane treatment;

5. a water purification unit; 501. a water purifying tank; 502. an ozone generator; 503. an ultraviolet sterilizer; 504. a purified water quality detector;

6. a water supply equipment group; 601. a low-zone water supply facility; 602. high-area water supply equipment;

7. a backwater filter; 8. an intermediate water tank.

Detailed Description

The spring water direct drinking water purification system comprises a raw water unit 1, wherein the raw water unit 1 is sequentially connected with a filter group 2, a primary membrane treatment 3, a secondary membrane treatment 4, a water purification unit 5, a water supply unit 6 and a return water filter 7; the water purification equipment group 5, the water supply equipment group 6 and the backwater filter 7 form a backwater circulation waterway, and the water outlet of the backwater filter 7 is connected to the water purification tank 501; an intermediate water tank 8 for buffering excess is arranged between the primary membrane treatment 3 and the secondary membrane treatment 4.

And the primary membrane treatment 3 uses an ultrafiltration membrane with the membrane aperture of 5-20 nm. The first-stage membrane treatment 3 adopts a hollow fiber filtration technology, the aperture of the ultrafiltration membrane is between 5 and 20nm, and fine impurities, colloids, all bacteria, macromolecular organic matters and the like in water can be filtered.

The water treatment of the secondary membrane treatment 4 is a pressure-driven membrane separation process and can be used for filtering and separating total hardness, sulfate, nitrate and the like, a Dow NF90 filter membrane is adopted in the primary secondary membrane treatment 4, low-valent ions and minerals in water are rarely reserved due to overhigh desalination rate, the treated water is pure and basically pure water with the hardness of about 20-40mg/L, the nanofiltration membrane selected by the improved secondary membrane treatment 4 is matched with the water quality of raw water, the filter membranes with different parameters are flexibly selected, the minerals in the water can be reserved while the requirement of direct-drinking spring water is met, the hardness index of the treated water can be smaller than 300mg/L on the premise that the water quality after the nanofiltration membrane treatment can meet the index of pure water, and the water hardness index can reach 80-150 mg/L.

The raw water equipment group 1 comprises a raw water well 101, a raw water pipe 102, a raw water tank 103, a raw water pressure pump 104 and a raw water quality detector 105, wherein the raw water well 101 is connected to the raw water tank 103 through the raw water pipe 102, and the raw water pressure pump 104 is arranged between the raw water tank 103 and the filter group 2; a raw water quality detector 105 is installed between the raw water pressurizing pump 104 and the filter group 2. Well digging work is completed in the area where the spring direct drinking engineering construction project is located, water quality detection is carried out, under the condition that the water quality meets the water supply precondition, the design and planning of a water treatment system are carried out, a water treatment process is reasonably made according to the water quality condition of each water source, and meanwhile, the water treatment amount is reasonably set according to the water consumption.

The filter group 2 comprises a multi-media filter 201 and a precision filter 202, and the multi-media filter 201 and the precision filter 202 are connected in series. The multi-media filter 201 takes high-quality quartz sand and activated carbon as filter materials, and can filter macroscopic impurities such as silt, particles, suspended matters and the like in water.

The precision filter 202 uses a filter membrane with a membrane aperture of 1-5 μm.

The water purification equipment group 5 comprises a water purification tank 501, an ultraviolet sterilizer 503, a purified water quality detector 504 and an ozone generator 502, wherein the ultraviolet sterilizer 503 and the purified water quality detector 504 are sequentially arranged between the water purification tank 501 and the water supply equipment group 6; the purified water tank 501 is externally connected with an ozone generator 502.

The water supply equipment group 6 comprises low-region water supply equipment 601 and high-region water supply equipment 602 which are arranged in parallel; the low-region water supply device 601 is connected with low-region water supply and low-region return water, the high-region water supply device 602 is connected with high-region water supply and high-region return water, and the low-region return water and the high-region return water are connected to the return water filter 7 after converging into a return water main path.

The utility model discloses a system flow chart simplifies to: raw water → multimedia filter → ultrafilter (1-5 μm) → first membrane treatment (5-20 nm ultrafiltration membrane) → second membrane treatment (nanofiltration membrane corresponding to desalination rate) → ozone + ultraviolet disinfection → water supply equipment group → user.

The above is the preferred embodiment of the present application, and the present application is not limited to the above-mentioned structure, and may have various modifications, and may be applied to more similar fields, and in short, all the modifications and changes that do not depart from the design idea, mechanical structure form, and intelligent driving control manner of the present application are within the scope of the present application.

Claims

1. A spring water direct drinking water purification system is characterized in that: the device comprises a raw water equipment set (1), wherein a filter group (2), a primary membrane treatment (3), a secondary membrane treatment (4), a water purification equipment set (5), a water supply equipment set (6) and a backwater filter (7) are sequentially connected behind the raw water equipment set (1); the water purifying equipment set (5) comprises a water purifying tank (501), the water purifying equipment set (5), the water supply equipment set (6) and the backwater filter (7) form a backwater circulating waterway, and a water outlet of the backwater filter (7) is connected to the water purifying tank (501); an intermediate water tank (8) for buffering excess is arranged between the primary membrane treatment (3) and the secondary membrane treatment (4).

2. The spring water direct-drinking water purification system according to claim 1, characterized in that: and the primary membrane treatment (3) adopts an ultrafiltration membrane with the membrane aperture of 5-20 nm.

3. The spring water direct-drinking water purification system according to claim 2, characterized in that: the nanofiltration membrane selected in the secondary membrane treatment (4) is matched with the water quality of the raw water, so that the hardness index of the water quality after passing through the secondary membrane treatment (4) is 80-150 mg/L.

4. The spring water direct-drinking water purification system according to claim 3, characterized in that: the raw water equipment set (1) comprises a raw water well (101), a raw water pipe (102), a raw water tank (103), a raw water pressure pump (104) and a raw water quality detector (105), wherein the raw water well (101) is connected to the raw water tank (103) through the raw water pipe (102), and the raw water pressure pump (104) is arranged between the raw water tank (103) and the filter set (2); a raw water quality detector (105) is arranged between the raw water pressure pump (104) and the filter group (2).

5. The spring water direct-drinking water purification system according to claim 1 or 3, characterized in that: the filter group (2) comprises a multi-media filter (201) and a precision filter (202), wherein the multi-media filter (201) and the precision filter (202) are connected in series in sequence.

6. The spring water direct-drinking water purification system according to claim 5, characterized in that: the precision filter (202) uses a filter membrane with a membrane aperture of 1-5 mu m.

7. The spring water direct-drinking water purification system according to claim 1 or 3, characterized in that: the water purification equipment set (5) comprises a water purification tank (501), an ozone generator (502), an ultraviolet sterilizer (503) and a water purification quality detector (504), wherein the ultraviolet sterilizer (503) and the water purification quality detector (504) are sequentially arranged between the water purification tank (501) and the water supply equipment set (6); the water purifying tank (501) is externally connected with an ozone generator (502).

8. The spring water direct-drinking water purification system according to claim 7, characterized in that: the water supply equipment group (6) comprises low-region water supply equipment (601) and high-region water supply equipment (602) which are arranged in parallel; the device is characterized in that the low-region water supply equipment (601) is connected with the low-region water supply and the low-region backwater, the high-region water supply equipment (602) is connected with the high-region water supply and the high-region backwater, and the low-region backwater and the high-region backwater are connected to a backwater filter (7) after converging into a backwater main path.