CN115108665A - A highly integrated water purification device and purification method - Google Patents

Abstract

A highly integrated water purification device comprises a water pump arranged at a water source outlet, wherein a primary filter is connected to the outlet of the water pump, the outlet of the primary filter is connected to the water inlet of a fine filter, the purified water outlet of the fine filter is connected to a water purification tank, the sewage outlet of the fine filter is connected to a sewage discharge tank or the water source outlet, and an ultraviolet sterilizer is arranged on a pipeline from the purified water outlet of the fine filter to the water purification tank section. The invention adopts a multi-stage filtration and disinfection process with good effect, high reliability and stable operation, and the whole process flow is simple and the operation is simple and convenient by fully and reasonably distributing and optimizing the space of the integrated water purifying device.

Description

A highly integrated water purification device and purification method

technical field

The invention belongs to the field of domestic water purification, and in particular relates to a highly integrated water purification device and purification method.

Background technique

For centralized water purification facilities, there are also shortcomings such as large equipment occupation, high basic investment and operating costs, and most of the water purification equipment is complex in configuration, low in automation, cumbersome in operation and maintenance management, and needs to be equipped with professionals for daily maintenance and management. At the same time, most water purification systems have low integration, complicated process pipeline connections; low process reliability, poor system stability, and frequent failures; integrated water purification devices are difficult to transport, disassemble, and install.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a highly integrated water purification device and purification method, adopting a multi-stage filtration and disinfection process with good effect, high reliability and stable operation, through the adequate and reasonable layout and optimization of the space of the integrated water purification device. , a highly integrated water purification device that makes the whole process simple and easy to operate.

The technical scheme adopted by the present invention is:

A highly integrated water purification device includes a water pump arranged at the outlet of the water source, the outlet of the water pump is connected with a primary filter, the outlet of the primary filter is connected to the water inlet of the fine filter, and the purified water outlet of the fine filter is connected to the In the pool, the sewage outlet of the fine filter is connected to the sewage tank or the outlet of the water source, and an ultraviolet sterilizer is provided on the pipeline from the clean water outlet of the fine filter to the water purification pool.

Further, a water softener is also connected between the primary filter and the fine filter.

Further, the ultra-violet sterilizer and the water softener are respectively connected in parallel with overpass pipes.

Further, a sodium hypochlorite cleaning liquid tank and a citric acid cleaning liquid tank are also respectively connected on the pipeline between the primary filter and the fine filter filter, and the sodium hypochlorite cleaning liquid tank and the citric acid cleaning liquid tank all carry a liquid supply pump.

Further, a pipeline mixer is also provided at the inlet of the clean water tank, the outlet of this pipeline mixer is connected to the clean water tank, and the two inlets are respectively connected with the outlet of the ultraviolet sterilizer and the outlet of the sodium hypochlorite cleaning solution tank.

Further, a calcium and magnesium ion monitor and a three-way solenoid valve are sequentially arranged in series on the primary filter outlet pipeline, and the outlet of the three-way solenoid valve is respectively connected with the inlet of the water softener and the inlet of the transcendental pipe in parallel with the water softener. ; The calcium and magnesium ion monitor is electrically connected to the central processing unit, and the central processing unit is electrically connected to the three-way solenoid valve through the PLC control system.

(The calcium and magnesium ion monitor transmits the monitoring results to the central processing unit in real time, and the central processing unit compares the monitoring results with the pre-stored standard values to determine whether the water quality is hard water or soft water. The outlet is connected with the water softener to soften the water, otherwise it will directly enter the fine filter through the overpass pipe.)

Further, a fan is connected to the cleaning inlet of the fine filter.

Further, all the valves of the system are solenoid valves, and all are electrically connected with the PLC control system.

Further, the primary filter is a bag filter, and the filter pore size of the filter bag is less than 0.5 μm.

Further, the fine filter is a pressure type ultrafiltration membrane filter, and the pore size of the filter screen is between 0.002 and 0.1 μm.

The purification system of the present invention includes the following operating procedures:

(1) The water production process is: the PLC control system starts the valves V1, V3, V4 and the water pump, calcium and magnesium ion monitor, softener and ultraviolet sterilizer, and the water in the water source is pumped to the bag filter by the water pump. The filter intercepts impurities and bacteria with a particle size of 0.5μm and above; the water filtered by the bag filter is monitored by calcium and magnesium ion monitors in real time for its softening degree. If it is hard water, the PLC control system controls the three-way solenoid valve to open the water softener. In the pipeline, the water body reduces the water hardness in the water softener, the softened water body enters the pressure ultrafiltration membrane, and the water filtered by the ultrafiltration membrane flows into the tubular ultraviolet sterilizer for disinfection; In case of secondary pollution, a pipeline mixer is installed at the back end of the ultraviolet sterilizer, and sodium hypochlorite is added to the pipeline mixer for disinfection, and a certain content of residual chlorine is maintained in the water body to fully ensure the safety of drinking water; if the hardness of the initially filtered raw water has reached the level of drinking water It is required that the raw water does not need to be softened, and the raw water passes through the parallel bypass pipe at the front end of the water softener, so that the raw water goes beyond the water softener and directly enters the pressure ultrafiltration membrane;

(The preparation of sodium hypochlorite adopts an integrated electrolytic sodium hypochlorite generator, which can operate fully automatically.)

(2) The drainage process is: after the PLC control system automatically starts the emptying valve V5 and the ultrafiltration intake valve V6, it starts the water pump, softener, ultraviolet sterilizer and electromagnetic fan, and the ultrafiltration membrane sewage and pipeline water pass through the emptying valve V5. discharge system;

(3) Cleaning is divided into three processes: air washing, rinsing, and chemical cleaning. The air washing is blown by the fan to remove the residual liquid in the filter, and then the rinsing liquid is added for circulating cleaning, and then the chemical cleaning is carried out with sodium hypochlorite or citric acid.

The three processes of water production, drainage and cleaning are all controlled and completed automatically by the central processing unit.

Beneficial effects of the present invention:

The integrated water purification device of the present invention adopts the process of "bag filter + softening system + precision filter + disinfection" to filter and remove various impurities, bacteria, etc. in the raw water, so as to achieve the purpose of purifying water quality. Bag-type carbon filtration mainly uses precision filter bags as filter media. Under a certain pressure, the water with high turbidity is filtered through a certain precision filter bag, and the suspended solids, organic matter, colloidal particles and microorganisms in the water are effectively intercepted and removed. , chlorine, smell and some heavy metal ions, etc., and finally achieve the effect of reducing water turbidity and purifying water quality. The softening system mainly reduces the hardness of the water body. The precision filter mainly removes finer particles. The disinfection process mainly uses ultraviolet rays to sterilize the water body to ensure the safety of water quality.

The invention organically integrates water purification units and accessories such as water pumps, fans, dosing devices, water softeners, ultrafiltration membranes, filters, disinfection equipment and intelligent control systems into the integrated water purification device. The sufficient, reasonable layout and optimization of the space reduces the size of the equipment, and forms a water purification device with rich functions and independent automatic operation through intelligent control. On the premise of ensuring that the system is stable and up to standard water output, through centralized monitoring and decentralized control, the entire system is fully automated and visualized organically, and flexible and simple operations such as full-automatic, full-manual, and semi-automatic can be realized. The entire purification system can be operated independently; the integrated water purification device has preset pipeline connection holes and electrical connection points, which is convenient for connecting with external pipelines, making the installation and disassembly of the equipment easier.

Description of drawings

1 is a schematic diagram of the overall connection of the system of the present invention;

In the picture, 1. Water source, 2. Water pump, 3. Primary filter, 4. Water softener, 5. Beyond pipe, 6. Fine filter, 7. Ultraviolet sterilizer, 8. Pipeline mixer, 9. Purified water Pool, 10. Sodium hypochlorite cleaning liquid tank, 11. Citric acid cleaning liquid tank, 12. Fan, 13. Calcium and magnesium ion monitor, 14. Three-way solenoid valve.

Detailed ways

As shown in Figure 1, a highly integrated water purification device includes a water pump 2 arranged at the outlet of a water source 1, the outlet of the water pump 2 is connected with a primary filter 3, and the outlet of the primary filter 3 is connected to the water inlet of the fine filter 6 , the clean water outlet of the fine filter 6 is connected to the clean water tank 9, the sewage outlet of the fine filter 6 is connected to the sewage tank or the outlet of the water source 1, and the clean water outlet of the fine filter 6 is connected to the clean water tank 9 An ultraviolet sterilizer 7 is provided on the pipeline of the section.

A water softener 4 is also connected between the primary filter 3 and the fine filter 6 . The ultra-violet sterilizer 7 and the water softener 4 are connected in parallel with the overpass pipes 5 respectively. Also be connected with sodium hypochlorite cleaning liquid tank 10 and citric acid cleaning liquid tank 11 on the pipeline between primary filter 3 and fine filter filter 6 respectively, and sodium hypochlorite cleaning liquid tank and citric acid cleaning liquid tank all carry liquid supply pump. A pipeline mixer 8 is also provided at the inlet of the clean water tank 9, the outlet of this pipeline mixer 8 is connected to the clean water tank 9, and the two inlets are respectively connected with the outlet of the ultraviolet sterilizer 7 and the outlet of the sodium hypochlorite cleaning solution tank 10.

A calcium and magnesium ion monitor 13 and a three-way solenoid valve 14 are sequentially arranged in series on the outlet pipeline of the primary filter 3. The outlet of the three-way solenoid valve 14 is respectively connected with the inlet of the water softener 4 and the overrun pipe 5 connected in parallel with the water softener. The inlet is connected; the calcium and magnesium ion monitor 13 is electrically connected to the central processing unit, and the central processing unit is electrically connected to the three-way solenoid valve 14 through the PLC control system.

The calcium and magnesium ion monitor transmits the monitoring results to the central processing unit in real time, and the central processing unit compares the monitoring results with the pre-stored standard values to determine whether the water quality is hard water or soft water. Connect with the water softener for water softening, or directly enter the fine filter through the overpass pipe.

A fan 12 is connected to the cleaning inlet of the fine filter 6 . All valves in this system are solenoid valves and are electrically connected to the PLC control system.

The primary filter 3 is a bag filter, and a precision filter bag is installed in the bag filter. The fine filter 6 is a pressure type ultrafiltration membrane filter, and the pore size of the filter screen is between 0.002 and 0.1 μm.

The purification system of the present invention includes the following operating procedures:

(1) The water production process is: the PLC control system starts the valves V1, V3, V4 and the water pump, calcium and magnesium ion monitor, softener and ultraviolet sterilizer, and the water in the water source is pumped to the bag filter by the water pump. The filter intercepts impurities and bacteria with a particle size of 0.5μm and above; the water filtered by the bag filter is monitored by calcium and magnesium ion monitors in real time for its softening degree. If it is hard water, the PLC control system controls the three-way solenoid valve to open the water softener. In the pipeline, the water body reduces the water hardness in the water softener, the softened water body enters the pressure ultrafiltration membrane, and the water filtered by the ultrafiltration membrane flows into the tubular ultraviolet sterilizer for disinfection; In case of secondary pollution, a pipeline mixer is installed at the back end of the ultraviolet sterilizer, and sodium hypochlorite is added to the pipeline mixer for disinfection, and a certain content of residual chlorine is maintained in the water body to fully ensure the safety of drinking water; if the hardness of the initially filtered raw water has reached the level of drinking water It is required that the raw water does not need to be softened, and the raw water passes through the parallel bypass pipe at the front end of the water softener, so that the raw water goes beyond the water softener and directly enters the pressure ultrafiltration membrane;

(The preparation of sodium hypochlorite adopts an integrated electrolytic sodium hypochlorite generator, which can operate fully automatically.)

(2) The drainage process is: after the PLC control system automatically starts the emptying valve V5 and the ultrafiltration intake valve V6, it starts the water pump, softener, ultraviolet sterilizer and electromagnetic fan, and the ultrafiltration membrane sewage and pipeline water pass through the emptying valve V5. discharge system;

(3) Cleaning is divided into three processes: air washing, rinsing, and chemical cleaning. The air washing is blown by the fan to remove the residual liquid in the filter, and then the rinsing liquid is added for circulating cleaning, and then the chemical cleaning is carried out with sodium hypochlorite or citric acid.

The three processes of water production, drainage and cleaning are all controlled and completed automatically by the central processing unit.

The running program of the present invention is divided into 7 states:

Start-up preparation, water production, air washing, drainage, rinsing, chemical cleaning (sodium hypochlorite), chemical cleaning (citric acid), these seven states can be automatically and continuously performed through system settings, or manual operation can be performed manually.

The operation time of equipment and valve control in each state can be set on-site through the central control panel of the central processing unit. The premise of each operating state is that all commands to the valve have been completed. After checking the opening and closing of the valve. The device can only be started after the shutdown state.

Water production operation procedure: water production 1800s-air washing 60s-draining 50s-rinsing 30s-air washing 60s-draining 50s-water production 1800s;

Chemical cleaning (sodium hypochlorite) procedure: water production-rinsing 30s-chemical cleaning (sodium hypochlorite) 1200s-draining 50s-rinsing 30s-air washing 60s-draining 50s-rinsing 30s-air washing 60s-draining 50s-water production;

Chemical cleaning (citric acid) procedure: water production-rinsing 30s-chemical cleaning (sodium hypochlorite) 1200s-draining 50s-rinsing 30s-air washing 60s-draining 50s-rinsing 30s-air washing 60s-draining 50s-rinsing 30s-chemical cleaning ( Citric acid) 1800s-drainage 50s-rinsing 30s-air washing 60s-draining 50s-rinsing 30s-air washing 60s-draining 50s- water production;

Flux recovery chemical cleaning procedure: water production-rinsing 30s-chemical cleaning (sodium hypochlorite) 3600s-draining 50s-rinsing 30s-air washing 60s-draining 50s-rinsing 30s-air washing 60s-draining 50s-rinsing 30s-chemical cleaning (lemon Acid) 3600s-drainage 50s-rinsing 30s-air washing 60s-draining 50s-rinsing 30s-air washing 60s-draining 50s- water production;

The frequency of chemical cleaning (sodium hypochlorite) is 1 time/day (set to reach a fixed flow before cleaning, the flow value is adjustable), the frequency of chemical cleaning (citric acid) is 1 time/month, and the frequency of chemical cleaning to restore flux is manually activated on site .

Claims (10)

1. The utility model provides a high integrated quality of water purifier, its characterized in that, including setting up water pump (2) in water source (1) exit, water pump (2) exit linkage has primary filter (3), primary filter (3) exit linkage to fine filtration filter (6) water inlet, the water purification exit linkage of fine filtration filter (6) is in clean water reservoir (9), the sewage outlet of fine filtration filter (6) is connected to blowdown pond or water source (1) exit, be equipped with ultraviolet ray disinfection ware (7) on the pipeline of fine filtration filter (6) clean water export to clean water reservoir (9) section.

2. A highly integrated water purification apparatus as claimed in claim 1, wherein a water softener (4) is further connected between the primary filter (3) and the fine filter (6).

3. A highly integrated water purification apparatus as claimed in claim 2, wherein the overtaking pipe (5) is connected in parallel to each of the ultraviolet sterilizer (7) and the water softener (4).

4. The highly integrated water purification device of claim 1, wherein a sodium hypochlorite cleaning solution tank (10) and a citric acid cleaning solution tank (11) are respectively connected to the pipeline between the primary filter (3) and the fine filter (6), and both the sodium hypochlorite cleaning solution tank and the citric acid cleaning solution tank are provided with liquid supply pumps.

5. A highly integrated water purification apparatus as claimed in claim 4, wherein a pipe mixer (8) is further provided at the inlet of the clean water reservoir (9), the outlet of the pipe mixer (8) is connected to the clean water reservoir (9), and the two inlets are respectively connected to the outlet of the ultraviolet sterilizer (7) and the outlet of the sodium hypochlorite cleaning solution tank (10).

6. A highly integrated water purification apparatus as claimed in claim 3, wherein a calcium magnesium ion monitor (13) and a three-way solenoid valve (14) are provided in series in sequence on the outlet line of the primary filter (3), the outlet of the three-way solenoid valve (14) is communicated with the inlet of the water softener (4) and the inlet of the overrun pipe (5) connected in parallel with the water softener, respectively; the calcium and magnesium ion monitor (13) is electrically connected to a central processing unit, and the central processing unit is electrically connected with the three-way electromagnetic valve (14) through a PLC control system.

7. A highly integrated water purification apparatus as claimed in claim 1, wherein a fan (12) is connected to a cleaning inlet of the fine filter (6); all valves of the system are electromagnetic valves and are electrically connected with the PLC control system.

8. A highly integrated water purification apparatus as claimed in claim 1, wherein the primary filter (3) is a bag filter having a filter pore size of less than 0.5 μm.

9. The highly integrated water purification apparatus as claimed in claim 1, wherein the fine filter (6) is a pressure type ultrafiltration membrane filter, and the filter mesh diameter is 0.002-0.1 μm.

10. A method for purifying water by using any one of the purification systems of claims 1 to 9, comprising the following steps:

firstly, the water production process comprises: the PLC control system starts valves V1, V3 and V4, a water pump, a calcium and magnesium ion monitor, a softener and an ultraviolet sterilizer, water in a water source is pumped to a bag filter by the water pump, and the bag filter intercepts impurities and bacteria with the particle size of 0.5 mu m or more; the softening degree of the water filtered by the bag filter is monitored by a calcium-magnesium ion monitor in real time, if the water is hard water, a PLC control system controls a three-way electromagnetic valve to open a pipeline of a water softener, the water quality hardness of the water is reduced in the water softener, the softened water enters a pressure type ultrafiltration membrane, and the water filtered by the ultrafiltration membrane flows into a tubular ultraviolet sterilizer for disinfection treatment; in order to avoid secondary pollution to water quality in the pipeline conveying process, a pipeline mixer is arranged at the rear end of the ultraviolet sterilizer, sodium hypochlorite is added into the pipeline mixer for sterilization, and a certain content of residual chlorine is maintained in a water body, so that the safety of drinking water is fully ensured; if the hardness of the primarily filtered raw water meets the requirement of drinking water and the raw water does not need to be softened, the raw water passes through an overrunning pipe connected in parallel at the front end of the water softener, so that the raw water directly enters the pressure type ultrafiltration membrane beyond the water softener;

secondly, the drainage process is as follows: after the PLC control system automatically starts the emptying valve V5 and the ultrafiltration air inlet valve V6, a water pump, a softener, an ultraviolet sterilizer and an electromagnetic fan are started, and ultrafiltration membrane sewage and pipeline water are discharged out of the system through the emptying valve V5;

and thirdly, cleaning the filter by three processes of air washing, rinsing and chemical cleaning, wherein the air washing is used for blowing air through a fan to remove residual liquid in the filter, then rinsing liquid is added for circular cleaning, and then sodium hypochlorite or citric acid is used for chemical cleaning.

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